Ajax+SpringMVC+Spring+Mybatis+MySql+js用户注册实例

电玩女神 2021-09-10 13:38 172阅读 0赞

[林炳文Evankaka][Evankaka]原创作品。转载请注明出处[http://blog.csdn.net/evankaka][http_blog.csdn.net_evankaka]

摘要：这几天研究了下Ajax注册的方法，通过在注册时输入用户名或邮箱等，就可以判断这个用户是否存在，以免用户来注册，然后提交了，系统才提示该用户名或邮箱不可用。使用Ajax便可实现这一功能，看了网上的都是php的，想想索性来写一个SpringMVC+Spring+Mybatis的。文章内容用到了很多技术，包括javascript、jquery、json、e表达式等。

[本文工程免费下载][Link 1]

先来看看最终效果：

![20150723164553399][]

注册成功的样子：

![20150723164629704][]

注册过程中参数的检验：

![20150723164735176][]

下面，让我们开始这次的编程吧！

首先，数据库准备，新建一张用户表，并自己插入一些数据

CREATE TABLE
        t_user
        (
            USER_ID INT NOT NULL AUTO_INCREMENT,
            USER_NAME CHAR(30) NOT NULL,
            USER_PASSWORD CHAR(10) NOT NULL,
            USER_EMAIL CHAR(30) NOT NULL,
            PRIMARY KEY (USER_ID)
        )
        ENGINE=InnoDB DEFAULT CHARSET=utf8;

好，数据库建好了，接下来就是整个工程了。

# 一、工程整体 #

**项目类型：Dynamic Web Project**

**开发环境：**

**Eclipse Java EE IDE for Web Developers.  
Version: Luna Service Release 2 (4.4.2)  
Build id: 20150219-0600**

**JDK版本：**

**jdk1.6.0\_45**

[本文工程免费下载][Link 1]

工程的其它参数：

![20150723161842688][]

## 1、用到的JAR包 ##

json使用的包。这里下载

spring+sprngMvc的包。

mybatis的包

mysql连接的包

logger的包（日记 打印的）

如下：

![20150723161630466][]

## 2、需要的外部js ##

jquery-1.11.3.min.js

## 3、项目结构 ##

这是还没有展开的

![20150723161941032][]

然后把各个都展开：

![20150723162132150][]

其中src放置java的文件、config放置SpringMVC+Spring+Mybatis的配置文件以及日记打印的log4j.properties

web-inf下面：js用来放置调用 的js文件，lib就是最上面说的jar包的位置，view是各个jsp文件

# 二、编程 #

## 2.1 java代码 ##

这里分了5层，按照标准的web工程来

### 1、domain层 ###

这里是使用Mybatis Generator自动生成的：User.java

package com.lin.domain;
    
    public class User {
        /**
         * This field was generated by MyBatis Generator.
         * This field corresponds to the database column t_user.USER_ID
         *
         * @mbggenerated
         */
        private Integer userId;
    
        /**
         * This field was generated by MyBatis Generator.
         * This field corresponds to the database column t_user.USER_NAME
         *
         * @mbggenerated
         */
        private String userName;
    
        /**
         * This field was generated by MyBatis Generator.
         * This field corresponds to the database column t_user.USER_PASSWORD
         *
         * @mbggenerated
         */
        private String userPassword;
    
        /**
         * This field was generated by MyBatis Generator.
         * This field corresponds to the database column t_user.USER_EMAIL
         *
         * @mbggenerated
         */
        private String userEmail;
    
        /**
         * This method was generated by MyBatis Generator.
         * This method returns the value of the database column t_user.USER_ID
         *
         * @return the value of t_user.USER_ID
         *
         * @mbggenerated
         */
        public Integer getUserId() {
            return userId;
        }
    
        /**
         * This method was generated by MyBatis Generator.
         * This method sets the value of the database column t_user.USER_ID
         *
         * @param userId the value for t_user.USER_ID
         *
         * @mbggenerated
         */
        public void setUserId(Integer userId) {
            this.userId = userId;
        }
    
        /**
         * This method was generated by MyBatis Generator.
         * This method returns the value of the database column t_user.USER_NAME
         *
         * @return the value of t_user.USER_NAME
         *
         * @mbggenerated
         */
        public String getUserName() {
            return userName;
        }
    
        /**
         * This method was generated by MyBatis Generator.
         * This method sets the value of the database column t_user.USER_NAME
         *
         * @param userName the value for t_user.USER_NAME
         *
         * @mbggenerated
         */
        public void setUserName(String userName) {
            this.userName = userName == null ? null : userName.trim();
        }
    
        /**
         * This method was generated by MyBatis Generator.
         * This method returns the value of the database column t_user.USER_PASSWORD
         *
         * @return the value of t_user.USER_PASSWORD
         *
         * @mbggenerated
         */
        public String getUserPassword() {
            return userPassword;
        }
    
        /**
         * This method was generated by MyBatis Generator.
         * This method sets the value of the database column t_user.USER_PASSWORD
         *
         * @param userPassword the value for t_user.USER_PASSWORD
         *
         * @mbggenerated
         */
        public void setUserPassword(String userPassword) {
            this.userPassword = userPassword == null ? null : userPassword.trim();
        }
    
        /**
         * This method was generated by MyBatis Generator.
         * This method returns the value of the database column t_user.USER_EMAIL
         *
         * @return the value of t_user.USER_EMAIL
         *
         * @mbggenerated
         */
        public String getUserEmail() {
            return userEmail;
        }
    
        /**
         * This method was generated by MyBatis Generator.
         * This method sets the value of the database column t_user.USER_EMAIL
         *
         * @param userEmail the value for t_user.USER_EMAIL
         *
         * @mbggenerated
         */
        public void setUserEmail(String userEmail) {
            this.userEmail = userEmail == null ? null : userEmail.trim();
        }
    }

然后还有一个example文件：UserExample.java

package com.lin.domain;
    
    import java.util.ArrayList;
    import java.util.List;
    
    public class UserExample {
        /**
         * This field was generated by MyBatis Generator.
         * This field corresponds to the database table t_user
         *
         * @mbggenerated
         */
        protected String orderByClause;
    
        /**
         * This field was generated by MyBatis Generator.
         * This field corresponds to the database table t_user
         *
         * @mbggenerated
         */
        protected boolean distinct;
    
        /**
         * This field was generated by MyBatis Generator.
         * This field corresponds to the database table t_user
         *
         * @mbggenerated
         */
        protected List<Criteria> oredCriteria;
    
        /**
         * This method was generated by MyBatis Generator.
         * This method corresponds to the database table t_user
         *
         * @mbggenerated
         */
        public UserExample() {
            oredCriteria = new ArrayList<Criteria>();
        }
    
        /**
         * This method was generated by MyBatis Generator.
         * This method corresponds to the database table t_user
         *
         * @mbggenerated
         */
        public void setOrderByClause(String orderByClause) {
            this.orderByClause = orderByClause;
        }
    
        /**
         * This method was generated by MyBatis Generator.
         * This method corresponds to the database table t_user
         *
         * @mbggenerated
         */
        public String getOrderByClause() {
            return orderByClause;
        }
    
        /**
         * This method was generated by MyBatis Generator.
         * This method corresponds to the database table t_user
         *
         * @mbggenerated
         */
        public void setDistinct(boolean distinct) {
            this.distinct = distinct;
        }
    
        /**
         * This method was generated by MyBatis Generator.
         * This method corresponds to the database table t_user
         *
         * @mbggenerated
         */
        public boolean isDistinct() {
            return distinct;
        }
    
        /**
         * This method was generated by MyBatis Generator.
         * This method corresponds to the database table t_user
         *
         * @mbggenerated
         */
        public List<Criteria> getOredCriteria() {
            return oredCriteria;
        }
    
        /**
         * This method was generated by MyBatis Generator.
         * This method corresponds to the database table t_user
         *
         * @mbggenerated
         */
        public void or(Criteria criteria) {
            oredCriteria.add(criteria);
        }
    
        /**
         * This method was generated by MyBatis Generator.
         * This method corresponds to the database table t_user
         *
         * @mbggenerated
         */
        public Criteria or() {
            Criteria criteria = createCriteriaInternal();
            oredCriteria.add(criteria);
            return criteria;
        }
    
        /**
         * This method was generated by MyBatis Generator.
         * This method corresponds to the database table t_user
         *
         * @mbggenerated
         */
        public Criteria createCriteria() {
            Criteria criteria = createCriteriaInternal();
            if (oredCriteria.size() == 0) {
                oredCriteria.add(criteria);
            }
            return criteria;
        }
    
        /**
         * This method was generated by MyBatis Generator.
         * This method corresponds to the database table t_user
         *
         * @mbggenerated
         */
        protected Criteria createCriteriaInternal() {
            Criteria criteria = new Criteria();
            return criteria;
        }
    
        /**
         * This method was generated by MyBatis Generator.
         * This method corresponds to the database table t_user
         *
         * @mbggenerated
         */
        public void clear() {
            oredCriteria.clear();
            orderByClause = null;
            distinct = false;
        }
    
        /**
         * This class was generated by MyBatis Generator.
         * This class corresponds to the database table t_user
         *
         * @mbggenerated
         */
        protected abstract static class GeneratedCriteria {
            protected List<Criterion> criteria;
    
            protected GeneratedCriteria() {
                super();
                criteria = new ArrayList<Criterion>();
            }
    
            public boolean isValid() {
                return criteria.size() > 0;
            }
    
            public List<Criterion> getCriteria() {
                return criteria;
            }
    
            protected void addCriterion(String condition) {
                if (condition == null) {
                    throw new RuntimeException("Value for condition cannot be null");
                }
                criteria.add(new Criterion(condition));
            }
    
            protected void addCriterion(String condition, Object value, String property) {
                if (value == null) {
                    throw new RuntimeException("Value for " + property + " cannot be null");
                }
                criteria.add(new Criterion(condition, value));
            }
    
            protected void addCriterion(String condition, Object value1, Object value2, String property) {
                if (value1 == null || value2 == null) {
                    throw new RuntimeException("Between values for " + property + " cannot be null");
                }
                criteria.add(new Criterion(condition, value1, value2));
            }
    
            public Criteria andUserIdIsNull() {
                addCriterion("USER_ID is null");
                return (Criteria) this;
            }
    
            public Criteria andUserIdIsNotNull() {
                addCriterion("USER_ID is not null");
                return (Criteria) this;
            }
    
            public Criteria andUserIdEqualTo(Integer value) {
                addCriterion("USER_ID =", value, "userId");
                return (Criteria) this;
            }
    
            public Criteria andUserIdNotEqualTo(Integer value) {
                addCriterion("USER_ID <>", value, "userId");
                return (Criteria) this;
            }
    
            public Criteria andUserIdGreaterThan(Integer value) {
                addCriterion("USER_ID >", value, "userId");
                return (Criteria) this;
            }
    
            public Criteria andUserIdGreaterThanOrEqualTo(Integer value) {
                addCriterion("USER_ID >=", value, "userId");
                return (Criteria) this;
            }
    
            public Criteria andUserIdLessThan(Integer value) {
                addCriterion("USER_ID <", value, "userId");
                return (Criteria) this;
            }
    
            public Criteria andUserIdLessThanOrEqualTo(Integer value) {
                addCriterion("USER_ID <=", value, "userId");
                return (Criteria) this;
            }
    
            public Criteria andUserIdIn(List<Integer> values) {
                addCriterion("USER_ID in", values, "userId");
                return (Criteria) this;
            }
    
            public Criteria andUserIdNotIn(List<Integer> values) {
                addCriterion("USER_ID not in", values, "userId");
                return (Criteria) this;
            }
    
            public Criteria andUserIdBetween(Integer value1, Integer value2) {
                addCriterion("USER_ID between", value1, value2, "userId");
                return (Criteria) this;
            }
    
            public Criteria andUserIdNotBetween(Integer value1, Integer value2) {
                addCriterion("USER_ID not between", value1, value2, "userId");
                return (Criteria) this;
            }
    
            public Criteria andUserNameIsNull() {
                addCriterion("USER_NAME is null");
                return (Criteria) this;
            }
    
            public Criteria andUserNameIsNotNull() {
                addCriterion("USER_NAME is not null");
                return (Criteria) this;
            }
    
            public Criteria andUserNameEqualTo(String value) {
                addCriterion("USER_NAME =", value, "userName");
                return (Criteria) this;
            }
    
            public Criteria andUserNameNotEqualTo(String value) {
                addCriterion("USER_NAME <>", value, "userName");
                return (Criteria) this;
            }
    
            public Criteria andUserNameGreaterThan(String value) {
                addCriterion("USER_NAME >", value, "userName");
                return (Criteria) this;
            }
    
            public Criteria andUserNameGreaterThanOrEqualTo(String value) {
                addCriterion("USER_NAME >=", value, "userName");
                return (Criteria) this;
            }
    
            public Criteria andUserNameLessThan(String value) {
                addCriterion("USER_NAME <", value, "userName");
                return (Criteria) this;
            }
    
            public Criteria andUserNameLessThanOrEqualTo(String value) {
                addCriterion("USER_NAME <=", value, "userName");
                return (Criteria) this;
            }
    
            public Criteria andUserNameLike(String value) {
                addCriterion("USER_NAME like", value, "userName");
                return (Criteria) this;
            }
    
            public Criteria andUserNameNotLike(String value) {
                addCriterion("USER_NAME not like", value, "userName");
                return (Criteria) this;
            }
    
            public Criteria andUserNameIn(List<String> values) {
                addCriterion("USER_NAME in", values, "userName");
                return (Criteria) this;
            }
    
            public Criteria andUserNameNotIn(List<String> values) {
                addCriterion("USER_NAME not in", values, "userName");
                return (Criteria) this;
            }
    
            public Criteria andUserNameBetween(String value1, String value2) {
                addCriterion("USER_NAME between", value1, value2, "userName");
                return (Criteria) this;
            }
    
            public Criteria andUserNameNotBetween(String value1, String value2) {
                addCriterion("USER_NAME not between", value1, value2, "userName");
                return (Criteria) this;
            }
    
            public Criteria andUserPasswordIsNull() {
                addCriterion("USER_PASSWORD is null");
                return (Criteria) this;
            }
    
            public Criteria andUserPasswordIsNotNull() {
                addCriterion("USER_PASSWORD is not null");
                return (Criteria) this;
            }
    
            public Criteria andUserPasswordEqualTo(String value) {
                addCriterion("USER_PASSWORD =", value, "userPassword");
                return (Criteria) this;
            }
    
            public Criteria andUserPasswordNotEqualTo(String value) {
                addCriterion("USER_PASSWORD <>", value, "userPassword");
                return (Criteria) this;
            }
    
            public Criteria andUserPasswordGreaterThan(String value) {
                addCriterion("USER_PASSWORD >", value, "userPassword");
                return (Criteria) this;
            }
    
            public Criteria andUserPasswordGreaterThanOrEqualTo(String value) {
                addCriterion("USER_PASSWORD >=", value, "userPassword");
                return (Criteria) this;
            }
    
            public Criteria andUserPasswordLessThan(String value) {
                addCriterion("USER_PASSWORD <", value, "userPassword");
                return (Criteria) this;
            }
    
            public Criteria andUserPasswordLessThanOrEqualTo(String value) {
                addCriterion("USER_PASSWORD <=", value, "userPassword");
                return (Criteria) this;
            }
    
            public Criteria andUserPasswordLike(String value) {
                addCriterion("USER_PASSWORD like", value, "userPassword");
                return (Criteria) this;
            }
    
            public Criteria andUserPasswordNotLike(String value) {
                addCriterion("USER_PASSWORD not like", value, "userPassword");
                return (Criteria) this;
            }
    
            public Criteria andUserPasswordIn(List<String> values) {
                addCriterion("USER_PASSWORD in", values, "userPassword");
                return (Criteria) this;
            }
    
            public Criteria andUserPasswordNotIn(List<String> values) {
                addCriterion("USER_PASSWORD not in", values, "userPassword");
                return (Criteria) this;
            }
    
            public Criteria andUserPasswordBetween(String value1, String value2) {
                addCriterion("USER_PASSWORD between", value1, value2, "userPassword");
                return (Criteria) this;
            }
    
            public Criteria andUserPasswordNotBetween(String value1, String value2) {
                addCriterion("USER_PASSWORD not between", value1, value2, "userPassword");
                return (Criteria) this;
            }
    
            public Criteria andUserEmailIsNull() {
                addCriterion("USER_EMAIL is null");
                return (Criteria) this;
            }
    
            public Criteria andUserEmailIsNotNull() {
                addCriterion("USER_EMAIL is not null");
                return (Criteria) this;
            }
    
            public Criteria andUserEmailEqualTo(String value) {
                addCriterion("USER_EMAIL =", value, "userEmail");
                return (Criteria) this;
            }
    
            public Criteria andUserEmailNotEqualTo(String value) {
                addCriterion("USER_EMAIL <>", value, "userEmail");
                return (Criteria) this;
            }
    
            public Criteria andUserEmailGreaterThan(String value) {
                addCriterion("USER_EMAIL >", value, "userEmail");
                return (Criteria) this;
            }
    
            public Criteria andUserEmailGreaterThanOrEqualTo(String value) {
                addCriterion("USER_EMAIL >=", value, "userEmail");
                return (Criteria) this;
            }
    
            public Criteria andUserEmailLessThan(String value) {
                addCriterion("USER_EMAIL <", value, "userEmail");
                return (Criteria) this;
            }
    
            public Criteria andUserEmailLessThanOrEqualTo(String value) {
                addCriterion("USER_EMAIL <=", value, "userEmail");
                return (Criteria) this;
            }
    
            public Criteria andUserEmailLike(String value) {
                addCriterion("USER_EMAIL like", value, "userEmail");
                return (Criteria) this;
            }
    
            public Criteria andUserEmailNotLike(String value) {
                addCriterion("USER_EMAIL not like", value, "userEmail");
                return (Criteria) this;
            }
    
            public Criteria andUserEmailIn(List<String> values) {
                addCriterion("USER_EMAIL in", values, "userEmail");
                return (Criteria) this;
            }
    
            public Criteria andUserEmailNotIn(List<String> values) {
                addCriterion("USER_EMAIL not in", values, "userEmail");
                return (Criteria) this;
            }
    
            public Criteria andUserEmailBetween(String value1, String value2) {
                addCriterion("USER_EMAIL between", value1, value2, "userEmail");
                return (Criteria) this;
            }
    
            public Criteria andUserEmailNotBetween(String value1, String value2) {
                addCriterion("USER_EMAIL not between", value1, value2, "userEmail");
                return (Criteria) this;
            }
        }
    
        /**
         * This class was generated by MyBatis Generator.
         * This class corresponds to the database table t_user
         *
         * @mbggenerated do_not_delete_during_merge
         */
        public static class Criteria extends GeneratedCriteria {
    
            protected Criteria() {
                super();
            }
        }
    
        /**
         * This class was generated by MyBatis Generator.
         * This class corresponds to the database table t_user
         *
         * @mbggenerated
         */
        public static class Criterion {
            private String condition;
    
            private Object value;
    
            private Object secondValue;
    
            private boolean noValue;
    
            private boolean singleValue;
    
            private boolean betweenValue;
    
            private boolean listValue;
    
            public String getCondition() {
                return condition;
            }
    
            public Object getValue() {
                return value;
            }
    
            public Object getSecondValue() {
                return secondValue;
            }
    
            public boolean isNoValue() {
                return noValue;
            }
    
            public boolean isSingleValue() {
                return singleValue;
            }
    
            public boolean isBetweenValue() {
                return betweenValue;
            }
    
            public boolean isListValue() {
                return listValue;
            }
    
            protected Criterion(String condition) {
                super();
                this.condition = condition;
                this.noValue = true;
            }
    
            protected Criterion(String condition, Object value) {
                super();
                this.condition = condition;
                this.value = value;
                if (value instanceof List<?>) {
                    this.listValue = true;
                } else {
                    this.singleValue = true;
                }
            }
    
            protected Criterion(String condition, Object value, Object secondValue) {
                super();
                this.condition = condition;
                this.value = value;
                this.secondValue = secondValue;
                this.betweenValue = true;
            }
        }
    }

### 2、dao层 ###

这里是使用Mybatis Generator自动生成的：UserDao.java

package com.lin.dao;
    
    import com.lin.domain.User;
    import com.lin.domain.UserExample;
    import java.util.List;
    import org.apache.ibatis.annotations.Param;
    
    public interface UserDao {
        /**
         * This method was generated by MyBatis Generator.
         * This method corresponds to the database table t_user
         *
         * @mbggenerated
         */
        int countByExample(UserExample example);
    
        /**
         * This method was generated by MyBatis Generator.
         * This method corresponds to the database table t_user
         *
         * @mbggenerated
         */
        int deleteByExample(UserExample example);
    
        /**
         * This method was generated by MyBatis Generator.
         * This method corresponds to the database table t_user
         *
         * @mbggenerated
         */
        int deleteByPrimaryKey(Integer userId);
    
        /**
         * This method was generated by MyBatis Generator.
         * This method corresponds to the database table t_user
         *
         * @mbggenerated
         */
        int insert(User record);
    
        /**
         * This method was generated by MyBatis Generator.
         * This method corresponds to the database table t_user
         *
         * @mbggenerated
         */
        int insertSelective(User record);
    
        /**
         * This method was generated by MyBatis Generator.
         * This method corresponds to the database table t_user
         *
         * @mbggenerated
         */
        List<User> selectByExample(UserExample example);
    
        /**
         * This method was generated by MyBatis Generator.
         * This method corresponds to the database table t_user
         *
         * @mbggenerated
         */
        User selectByPrimaryKey(Integer userId);
    
        /**
         * This method was generated by MyBatis Generator.
         * This method corresponds to the database table t_user
         *
         * @mbggenerated
         */
        int updateByExampleSelective(@Param("record") User record, @Param("example") UserExample example);
    
        /**
         * This method was generated by MyBatis Generator.
         * This method corresponds to the database table t_user
         *
         * @mbggenerated
         */
        int updateByExample(@Param("record") User record, @Param("example") UserExample example);
    
        /**
         * This method was generated by MyBatis Generator.
         * This method corresponds to the database table t_user
         *
         * @mbggenerated
         */
        int updateByPrimaryKeySelective(User record);
    
        /**
         * This method was generated by MyBatis Generator.
         * This method corresponds to the database table t_user
         *
         * @mbggenerated
         */
        int updateByPrimaryKey(User record);
    }

### 3、service层 ###

这里就设计了两个方法，一个查找和一个插入

接口类：

package com.lin.service;
    
    import com.lin.domain.User;
    import com.lin.domain.UserExample;
    
    public interface IRegisterService {
    	
    	public int insert(User record);
    	
    	public int countByExample(UserExample example);
    
    }

实现类：

package com.lin.service.impl;
    
    import javax.annotation.Resource;
    
    import org.apache.log4j.Logger;
    import org.springframework.stereotype.Service;
    
    import com.lin.dao.UserDao;
    import com.lin.domain.User;
    import com.lin.domain.UserExample;
    import com.lin.service.IRegisterService;
    @Service("registerService")
    public class RegisterServiceImpl implements IRegisterService{
    	private static Logger logger = Logger.getLogger(RegisterServiceImpl.class);  
    	@Resource
    	private UserDao userDao;
    
    	@Override
    	public int insert(User record) {	
    		try {
    			return userDao.insert(record);
    		} catch (Exception e) {
    			e.printStackTrace();
    		}
    		return 0;
    	}
    
    	@Override
    	public int countByExample(UserExample example) {
    		try {
    			return userDao.countByExample(example);
    		} catch (Exception e) {
    			e.printStackTrace();
    		}
    		return 0;
    	}
    
    }

## 2.2 配置文件 ##

![20150723163952488][]

### 1、mappp文件配置 ###

这里是使用Mybatis Generator自动生成的：UserMapper.xml。放在src下面的com.lin.mapper包下

<?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
    <mapper namespace="com.lin.dao.UserDao">
      <resultMap id="BaseResultMap" type="com.lin.domain.User">
        
        <id column="USER_ID" jdbcType="INTEGER" property="userId" />
        <result column="USER_NAME" jdbcType="CHAR" property="userName" />
        <result column="USER_PASSWORD" jdbcType="CHAR" property="userPassword" />
        <result column="USER_EMAIL" jdbcType="CHAR" property="userEmail" />
      </resultMap>
      <sql id="Example_Where_Clause">
        
        <where>
          <foreach collection="oredCriteria" item="criteria" separator="or">
            <if test="criteria.valid">
              <trim prefix="(" prefixOverrides="and" suffix=")">
                <foreach collection="criteria.criteria" item="criterion">
                  <choose>
                    <when test="criterion.noValue">
                      and ${criterion.condition}
                    </when>
                    <when test="criterion.singleValue">
                      and ${criterion.condition} #{criterion.value}
                    </when>
                    <when test="criterion.betweenValue">
                      and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
                    </when>
                    <when test="criterion.listValue">
                      and ${criterion.condition}
                      <foreach close=")" collection="criterion.value" item="listItem" open="(" separator=",">
                        #{listItem}
                      </foreach>
                    </when>
                  </choose>
                </foreach>
              </trim>
            </if>
          </foreach>
        </where>
      </sql>
      <sql id="Update_By_Example_Where_Clause">
        
        <where>
          <foreach collection="example.oredCriteria" item="criteria" separator="or">
            <if test="criteria.valid">
              <trim prefix="(" prefixOverrides="and" suffix=")">
                <foreach collection="criteria.criteria" item="criterion">
                  <choose>
                    <when test="criterion.noValue">
                      and ${criterion.condition}
                    </when>
                    <when test="criterion.singleValue">
                      and ${criterion.condition} #{criterion.value}
                    </when>
                    <when test="criterion.betweenValue">
                      and ${criterion.condition} #{criterion.value} and #{criterion.secondValue}
                    </when>
                    <when test="criterion.listValue">
                      and ${criterion.condition}
                      <foreach close=")" collection="criterion.value" item="listItem" open="(" separator=",">
                        #{listItem}
                      </foreach>
                    </when>
                  </choose>
                </foreach>
              </trim>
            </if>
          </foreach>
        </where>
      </sql>
      <sql id="Base_Column_List">
        
        USER_ID, USER_NAME, USER_PASSWORD, USER_EMAIL
      </sql>
      <select id="selectByExample" parameterType="com.lin.domain.UserExample" resultMap="BaseResultMap">
        
        select
        <if test="distinct">
          distinct
        </if>
        <include refid="Base_Column_List" />
        from t_user
        <if test="_parameter != null">
          <include refid="Example_Where_Clause" />
        </if>
        <if test="orderByClause != null">
          order by ${orderByClause}
        </if>
      </select>
      <select id="selectByPrimaryKey" parameterType="java.lang.Integer" resultMap="BaseResultMap">
        
        select 
        <include refid="Base_Column_List" />
        from t_user
        where USER_ID = #{userId,jdbcType=INTEGER}
      </select>
      <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer">
        
        delete from t_user
        where USER_ID = #{userId,jdbcType=INTEGER}
      </delete>
      <delete id="deleteByExample" parameterType="com.lin.domain.UserExample">
        
        delete from t_user
        <if test="_parameter != null">
          <include refid="Example_Where_Clause" />
        </if>
      </delete>
      <insert id="insert" parameterType="com.lin.domain.User">
        
        insert into t_user (USER_ID, USER_NAME, USER_PASSWORD, 
          USER_EMAIL)
        values (#{userId,jdbcType=INTEGER}, #{userName,jdbcType=CHAR}, #{userPassword,jdbcType=CHAR}, 
          #{userEmail,jdbcType=CHAR})
      </insert>
      <insert id="insertSelective" parameterType="com.lin.domain.User">
        
        insert into t_user
        <trim prefix="(" suffix=")" suffixOverrides=",">
          <if test="userId != null">
            USER_ID,
          </if>
          <if test="userName != null">
            USER_NAME,
          </if>
          <if test="userPassword != null">
            USER_PASSWORD,
          </if>
          <if test="userEmail != null">
            USER_EMAIL,
          </if>
        </trim>
        <trim prefix="values (" suffix=")" suffixOverrides=",">
          <if test="userId != null">
            #{userId,jdbcType=INTEGER},
          </if>
          <if test="userName != null">
            #{userName,jdbcType=CHAR},
          </if>
          <if test="userPassword != null">
            #{userPassword,jdbcType=CHAR},
          </if>
          <if test="userEmail != null">
            #{userEmail,jdbcType=CHAR},
          </if>
        </trim>
      </insert>
      <select id="countByExample" parameterType="com.lin.domain.UserExample" resultType="java.lang.Integer">
        
        select count(*) from t_user
        <if test="_parameter != null">
          <include refid="Example_Where_Clause" />
        </if>
      </select>
      <update id="updateByExampleSelective" parameterType="map">
        
        update t_user
        <set>
          <if test="record.userId != null">
            USER_ID = #{record.userId,jdbcType=INTEGER},
          </if>
          <if test="record.userName != null">
            USER_NAME = #{record.userName,jdbcType=CHAR},
          </if>
          <if test="record.userPassword != null">
            USER_PASSWORD = #{record.userPassword,jdbcType=CHAR},
          </if>
          <if test="record.userEmail != null">
            USER_EMAIL = #{record.userEmail,jdbcType=CHAR},
          </if>
        </set>
        <if test="_parameter != null">
          <include refid="Update_By_Example_Where_Clause" />
        </if>
      </update>
      <update id="updateByExample" parameterType="map">
        
        update t_user
        set USER_ID = #{record.userId,jdbcType=INTEGER},
          USER_NAME = #{record.userName,jdbcType=CHAR},
          USER_PASSWORD = #{record.userPassword,jdbcType=CHAR},
          USER_EMAIL = #{record.userEmail,jdbcType=CHAR}
        <if test="_parameter != null">
          <include refid="Update_By_Example_Where_Clause" />
        </if>
      </update>
      <update id="updateByPrimaryKeySelective" parameterType="com.lin.domain.User">
        
        update t_user
        <set>
          <if test="userName != null">
            USER_NAME = #{userName,jdbcType=CHAR},
          </if>
          <if test="userPassword != null">
            USER_PASSWORD = #{userPassword,jdbcType=CHAR},
          </if>
          <if test="userEmail != null">
            USER_EMAIL = #{userEmail,jdbcType=CHAR},
          </if>
        </set>
        where USER_ID = #{userId,jdbcType=INTEGER}
      </update>
      <update id="updateByPrimaryKey" parameterType="com.lin.domain.User">
        
        update t_user
        set USER_NAME = #{userName,jdbcType=CHAR},
          USER_PASSWORD = #{userPassword,jdbcType=CHAR},
          USER_EMAIL = #{userEmail,jdbcType=CHAR}
        where USER_ID = #{userId,jdbcType=INTEGER}
      </update>
    </mapper>

### 2、mybatis配置,没有其实也行，因为都 在spring中进行配置了，但是保留一下，以免要用，mybatis-config.xml放在config下面    ###

<?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
    "http://mybatis.org/dtd/mybatis-3-config.dtd">
    <configuration>
    </configuration>

### 3、spingMVC配置 ###

### 4、spring配置：application.xml放在config下面 ###

<?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans"
    	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
    	xmlns:aop="http://www.springframework.org/schema/aop"
    	xsi:schemaLocation="  
               http://www.springframework.org/schema/beans  
               http://www.springframework.org/schema/beans/spring-beans-3.0.xsd  
               http://www.springframework.org/schema/aop  
               http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
               http://www.springframework.org/schema/context  
               http://www.springframework.org/schema/context/spring-context-3.0.xsd">
    	
    	<bean id="dataSource"
    		class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    		<property name="driverClassName" value="com.mysql.jdbc.Driver" />
    		<property name="url" value="jdbc:mysql://localhost:3306/learning" />
    		<property name="username" value="root" />
    		<property name="password" value="christmas258@" />
    	</bean>
    
    	
    	<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    		<property name="basePackage"
    			value="com.lin.dao" />
    	</bean>
    
    
    	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
    		<property name="dataSource" ref="dataSource" />
           <property name="mapperLocations" value="classpath*:com/lin/mapper/**/*.xml"/>  
    		<property name="configLocation" value="classpath:mybatis-config.xml" />
    		
    	</bean>
    
    	
    	<context:component-scan base-package="com.lin.controller" />
    		<context:component-scan base-package="com.lin.service.impl" />
    
    </beans>

### 5、日志打印配置：log4j.properties放在config下面 ###

log4j.rootLogger =DEBEG,stdout,debug
      
      
    log4j.appender.stdout = org.apache.log4j.ConsoleAppender  
    log4j.appender.stdout.Target = System.out  
    log4j.appender.stdout.layout = org.apache.log4j.PatternLayout  
    log4j.appender.stdout.layout.ConversionPattern = [%-5p] %d{yyyy-MM-dd HH:mm:ss,SSS} method:%l%n%m%n  
      
    log4j.logger.java.sql.ResultSet=INFO
    log4j.logger.org.apache=INFO
    log4j.logger.java.sql.Connection=DEBUG
    log4j.logger.java.sql.Statement=DEBUG
    log4j.logger.java.sql.PreparedStatement=DEBUG

6、web文件配置，放在WebContent下面

<?xml version="1.0" encoding="UTF-8"?>
    <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
      <display-name>JsLearning3</display-name>
      <welcome-file-list>
        <welcome-file>index.html</welcome-file>
        <welcome-file>index.htm</welcome-file>
        <welcome-file>index.jsp</welcome-file>
        <welcome-file>default.html</welcome-file>
        <welcome-file>default.htm</welcome-file>
        <welcome-file>default.jsp</welcome-file>
      </welcome-file-list>
      
              
        <listener>  
            <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>  
        </listener>  
        <context-param>  
            <param-name>contextConfigLocation</param-name>  
            <param-value>classpath:application.xml</param-value>  
        </context-param> 
        
          
      	<filter>
    		<filter-name>Set Character Encoding</filter-name>
    		<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    		<init-param>
    			<param-name>encoding</param-name>
    			<param-value>UTF-8</param-value>
    		</init-param>
    	</filter>
    	<filter-mapping>
    		<filter-name>Set Character Encoding</filter-name>
    		<url-pattern>/*</url-pattern>
    	</filter-mapping>
      
         
        <servlet>  
            <servlet-name>dispatcherServlet</servlet-name>  
            <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>  
              
            <init-param>  
                <param-name>contextConfigLocation</param-name>  
                <param-value>classpath*:spring-servlet.xml</param-value>  
            </init-param>  
            <load-on-startup>1</load-on-startup>  
        </servlet>  
          
      
          
        <servlet-mapping>  
            <servlet-name>dispatcherServlet</servlet-name>  
              
            <url-pattern>/</url-pattern>  
        </servlet-mapping>  
        
        
        <context-param>
            <param-name>webAppRootKey</param-name>
            <param-value>webApp.root</param-value>
        </context-param>
        
        <context-param>
            <param-name>log4jConfigLocation</param-name>
            <param-value>classpath:log4j.properties</param-value>
        </context-param>
          
        <context-param>    
             <param-name>log4jRefreshInterval</param-name>    
             <param-value>3000</param-value>    
        </context-param>   
        <listener>
            <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
        </listener>
    </web-app>

# 三、web页面编写 #

![20150723164108772][]

## 1、使用到的js编程 ##

## 2、注册页面 ##

<%@ page language="java" contentType="text/html; charset=UTF-8"
    	pageEncoding="UTF-8"%>
    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <script type="text/javascript" src="<%=request.getContextPath()%>/js/jquery-1.11.3.min.js" ></script>
    <script type="text/javascript" src="<%=request.getContextPath()%>/js/registerCheck.js" ></script>
    <title>Ajax+SpringMVC+Spring+MyBatis+Mysql注册验证实例</title>
    </head>
    <body>  
    <div id="reg">  
    <FORM name="formUser"  action="<%=request.getContextPath()%>/register/successed"  method=post>  
      <BR>  
      <TABLE width="100%" align=center border=0>  
        <TBODY>  
          <TR>  
            <TD align=right width="15%"><STRONG>用户名:</STRONG></TD>  
            <TD width="57%"><INPUT id="username" onBlur="checkUserName(this)"   
          name="username">  
                <SPAN id="username_notice" >*</SPAN></TD>  
          </TR>  
          <TR>  
            <TD align=right><STRONG>邮箱:</STRONG></TD>  
            <TD><INPUT id="email" onBlur="checkEmail(this)" name="email">  
                <SPAN id=email_notice >*</SPAN></TD>  
          </TR>  
          <TR>  
            <TD align=right><STRONG>密码:</STRONG></TD>  
            <TD><INPUT id="password" onBlur="checkPassword(this)"   
          οnkeyup="checkIntensity(this.value)" type="password" name="password">  
                <SPAN   
          id=password_notice >*</SPAN></TD>  
          </TR>  
          <TR>  
            <TD align=right><STRONG>密码强度:</STRONG></TD>  
            <TD><TABLE cellSpacing=0 cellPadding=1 width=145 border=0>  
              <TBODY>  
                <TR align=middle>  
                  <TD id=pwd_lower width="33%">弱</TD>  
                  <TD id=pwd_middle width="33%">中</TD>  
                  <TD id=pwd_high width="33%">强</TD>  
                </TR>  
              </TBODY>  
            </TABLE></TD>  
          </TR>  
          <TR>  
            <TD align=right><STRONG>确认密码:</STRONG></TD>  
            <TD><INPUT id="conform_password" onBlur="checkConformPassword(this)"   
          type="password" name="confirm_password">  
                <SPAN id=conform_password_notice >*</SPAN></TD>  
          </TR>  
          <TR>  
            <TD> </TD>  
            <TD><LABEL>  
              <INPUT type="checkbox" id="agreement" οnclick="checkAgreement(this)">  
              <B>我已看过并接受《<a href="#">用户协议</a>》<SPAN id=agreement_notice >*</SPAN></B></LABEL></TD>  
          </TR>  
          <TR>  
            <TD  ><INPUT type=hidden value=act_register name=act></TD>  
            <TD  ><input type=submit value=确认注册    name="Submit1" class="anniu" disabled></TD>  
          </TR>  
          <TR>  
            <TD colSpan=2> </TD>  
          </TR>  
        </TBODY>  
      </TABLE>  
    </FORM>  
    </div>           
    </body>
    </html>

### 3、注册成功页面 ###

<%@ page language="java" contentType="text/html" pageEncoding="UTF-8"%> 
    <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>用户注册成功</title>
    </head>
    <body>
    <center>
    <h1><b>欢迎新用户</b></h1>
    用户名：${requestScope.username}<br>  
    邮箱：${requestScope.email}<br>  
    </center>
    </body>
    </html>

# 四、Controller编写 #

使用SpringMVC就得要自己来写Controller，拦截各个请求，处理后再返回给请求者，放在src下的。com.lin.controller

package com.lin.controller;
    
    import java.io.IOException;
    import java.util.HashMap;
    import java.util.Map;
    
    import javax.annotation.Resource;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    
    import net.sf.json.JSONObject;
    
    import org.apache.log4j.Logger;
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestMethod;
    import org.springframework.web.servlet.ModelAndView;
    
    import com.lin.domain.User;
    import com.lin.domain.UserExample;
    import com.lin.domain.UserExample.Criteria;
    import com.lin.service.IRegisterService;
    
    @Controller
    public class RegisterController {
    	private static Logger logger = Logger.getLogger(RegisterController.class);    
    	@Resource
    	private IRegisterService registerService;	
    	
    	@RequestMapping({"/register","/"})
    	public String register(){  
    		return "register";
    	}
    	@RequestMapping(value="/register/checkUserName",method = RequestMethod.POST)
    	public String checkUserName(HttpServletRequest request, HttpServletResponse response) throws IOException{
    		String userName=(String)request.getParameter("userName");			
    		//检验用户名是否存在
    		UserExample userExample=new UserExample();
    		Criteria conditionCri = userExample.createCriteria();
    		conditionCri.andUserNameEqualTo(userName);		
    	    int num=registerService.countByExample(userExample);
    	    //用户名是否存在的标志
    	    boolean flag=false;
    	    if(num>0){
    	    	flag=true;
    	    }		
    		//将数据转换成json
    		Map<String,Object> map = new HashMap<String,Object>();  
    		map.put("flag", flag);  		  
    		String json = JSONObject.fromObject(map).toString(); 		
    		//将数据返回
    		response.setCharacterEncoding("UTF-8");
    		response.flushBuffer();
    		response.getWriter().write(json);
    		response.getWriter().flush();  
    		response.getWriter().close();
    		return null;
    	}
    	
    	@RequestMapping(value="/register/checkEmail",method = RequestMethod.POST)
    	public String checkEmail(HttpServletRequest request, HttpServletResponse response) throws IOException{
    		String email=(String)request.getParameter("email");			
    		//检验邮箱是否存在
    		UserExample userExample=new UserExample();
    		Criteria conditionCri = userExample.createCriteria();
    		conditionCri.andUserEmailEqualTo(email);		
    	    int num=registerService.countByExample(userExample);
    	    //用户名是否存在的标志
    	    boolean flag=false;
    	    if(num>0){
    	    	flag=true;
    	    }		
    		//将数据转换成json
    		Map<String,Object> map = new HashMap<String,Object>();  
    		map.put("flag", flag);  		  
    		String json = JSONObject.fromObject(map).toString(); 		
    		//将数据返回
    		response.setCharacterEncoding("UTF-8");
    		response.flushBuffer();
    		response.getWriter().write(json);
    		response.getWriter().flush();  
    		response.getWriter().close();
    		return null;
    	}
    	@RequestMapping(value="/register/successed")
    	public ModelAndView  successed(HttpServletRequest request, HttpServletResponse response) throws IOException{
    		String username=(String)request.getParameter("username");	
    		String email=(String)request.getParameter("email");		
    		String password=(String)request.getParameter("password");
    		if(username==null||email==null||password==null){
    			return new ModelAndView("redirect:/register"); 
    		}
    		//新增用户插入数据库
    		User user=new User();
    		user.setUserName(username);
    		user.setUserEmail(email);
    		user.setUserPassword(password);
    		registerService.insert(user);		
    		//将数据转换成
    		Map<String,Object> map = new HashMap<String,Object>();  
    		map.put("username", username);  
    		map.put("email", email);  
    		map.put("password", password);  
    /*		String json = JSONObject.fromObject(map).toString(); 		
    		//将数据返回
    		response.setCharacterEncoding("UTF-8");
    		response.flushBuffer();
    		response.getWriter().write(json);
    		response.getWriter().flush();  
    		response.getWriter().close();*/
    		return new ModelAndView("successed",map);  
    	}
    	
    
    }

# 五、结果分析 #

## 1、运行 ##

![20150723164735176][]

![20150723164553399][]

![20150723164629704][]

## 2、然后来看看打印出来的sql语句： ##

这是要验证用户名：

![20150723164850414][]

每次输入后，移开鼠标后就验证，并返回结果

这是在验证邮箱：

![20150723164923387][]

### 3、最后还要看看数据库数据进去了没有： ###

这是还没注册之前的：

![20150723165130254][]

这是数据成功插入之后的”，我做了很多次，所以数据有点多。

![20150723165147558][]

[本文工程免费下载][Link 1]

[Evankaka]: http://my.csdn.net/?ref=toolbar
[http_blog.csdn.net_evankaka]: http://blog.csdn.net/evankaka
[Link 1]: http://download.csdn.net/detail/evankaka/8927017
[20150723164553399]: /images/20210811/297493c120d5420e954d05460145df09.png
[20150723164629704]: /images/20210811/83303aeae706471ca2589a6089955e72.png
[20150723164735176]: /images/20210811/a0477edc475f416bb7e0fccd872bc907.png
[20150723161842688]: /images/20210811/e74a4e9ebe4c44fa8462f6745f75bdbd.png
[20150723161630466]: /images/20210811/19a71007cee74de6969ed4df9af5d555.png
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