【SSM学习】2、Maven + SSM + MySQL 整合实现用户登录

Bertha 。 2022-05-26 04:37 189阅读 0赞

1、框架介绍

*  1.1 Spring介绍:

spring 使用基本的 JavaBean 来完成以前只可能由 EJB 完成的事情。然而， Spring的用途不仅限于服务器端的开发。从简单性、可测试性和松耦合的角度而言，任何Java 应用都可以从 Spring 中受益。 简单来说， Spring 是一个轻量级的控制反转（IoC ）和面向切面（ AOP ）的容器框架。

*  1.2 SpringMVC介绍

Spring MVC 属于 SpringFrameWork 的后续产品，已经融合在Spring Web Flow 里面。 Spring MVC  分离了 控制器 、模型 对象 、分派器以及处理程序对象的角色，这种分离让它们更容易进行定制。

*  1.3 MyBatis介绍

MyBatis  本是 apache 的一个开源项目 iBatis , 2010 年这个项目由apache software foundation  迁移到了 google code ，并且改名为 MyBatis  。MyBatis 是一个基于 Java 的 持久层 框架。 iBATIS 提供的 持久层 框架包括SQL Maps 和 Data Access Objects （ DAO ） MyBatis  消除了几乎所有的 JDBC 代码和参数的手工设置以及结果集的检索。 MyBatis  使用简单的  XML 或注解用于配置和原始映射，将接口和  Java  的 POJOs （ Plain Old Java Objects ，普通的  Java 对象）映射成数据库中的记录。

2、效果图

*  2.1 登录页面

![70][]

*  2.2 登录失败提示信息

![70 1][]

*  2.3 登录成功，并显示登录的用户名

![70 2][]

3、项目环境

Eclipse Neon.3 Release (4.6.3)  
    jdk1.8.0\_121  
    apache-tomcat-8.5.24  
    MYSQL5.7  
    Navicat for MySQL 11.1.13

4、目录结构图

![70 3][]![70 4][]

5、搭建整合框架

*  5.1 pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
    	<modelVersion>4.0.0</modelVersion>
    	<groupId>com.maven</groupId>
    	<artifactId>SSM_Maven_Login</artifactId>
    	<packaging>war</packaging>
    	<version>0.0.1-SNAPSHOT</version>
    	<name>ssm_maven Maven Webapp</name>
    	<url>http://maven.apache.org</url>
    	
    	<properties>
    		<srping.version>4.0.2.RELEASE</srping.version>
    		<mybatis.version>3.2.8</mybatis.version>
    		<slf4j.version>1.7.12</slf4j.version>
    		<log4j.version>1.2.17</log4j.version>
    	</properties>
    	
    	<dependencies>
    		
    		<dependency>
    			<groupId>junit</groupId>
    			<artifactId>junit</artifactId>
    			<version>4.11</version>
    			
    			<scope>test</scope>
    		</dependency>
    		
    		<dependency>
    			<groupId>javax</groupId>
    			<artifactId>javaee-api</artifactId>
    			<version>7.0</version>
    		</dependency>
    		
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-test</artifactId>
    			<version>${srping.version}</version>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-core</artifactId>
    			<version>${srping.version}</version>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-oxm</artifactId>
    			<version>${srping.version}</version>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-tx</artifactId>
    			<version>${srping.version}</version>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-jdbc</artifactId>
    			<version>${srping.version}</version>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-aop</artifactId>
    			<version>${srping.version}</version>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-context</artifactId>
    			<version>${srping.version}</version>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-context-support</artifactId>
    			<version>${srping.version}</version>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-expression</artifactId>
    			<version>${srping.version}</version>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-orm</artifactId>
    			<version>${srping.version}</version>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-web</artifactId>
    			<version>${srping.version}</version>
    		</dependency>
    		<dependency>
    			<groupId>org.springframework</groupId>
    			<artifactId>spring-webmvc</artifactId>
    			<version>${srping.version}</version>
    		</dependency>
    		
    		
    		<dependency>
    			<groupId>org.mybatis</groupId>
    			<artifactId>mybatis</artifactId>
    			<version>${mybatis.version}</version>
    		</dependency>
    		<dependency>
    			<groupId>org.mybatis</groupId>
    			<artifactId>mybatis-spring</artifactId>
    			<version>1.2.2</version>
    		</dependency>
    		
    		
    		<dependency>
    			<groupId>mysql</groupId>
    			<artifactId>mysql-connector-java</artifactId>
    			<version>5.1.35</version>
    		</dependency>
    		
    		<dependency>
    			<groupId>commons-dbcp</groupId>
    			<artifactId>commons-dbcp</artifactId>
    			<version>1.4</version>
    		</dependency>
    		
    		<dependency>
    			<groupId>jstl</groupId>
    			<artifactId>jstl</artifactId>
    			<version>1.2</version>
    		</dependency>
    		
    		<dependency>
    			<groupId>log4j</groupId>
    			<artifactId>log4j</artifactId>
    			<version>${log4j.version}</version>
    		</dependency>
    		<dependency>
    			<groupId>org.slf4j</groupId>
    			<artifactId>slf4j-api</artifactId>
    			<version>${slf4j.version}</version>
    		</dependency>
    		<dependency>
    			<groupId>org.slf4j</groupId>
    			<artifactId>slf4j-log4j12</artifactId>
    			<version>${slf4j.version}</version>
    		</dependency>
    		
    		
    		
    		<dependency>
    			<groupId>com.alibaba</groupId>
    			<artifactId>fastjson</artifactId>
    			<version>1.2.6</version>
    		</dependency>
    		<dependency>
    			<groupId>org.codehaus.jackson</groupId>
    			<artifactId>jackson-mapper-asl</artifactId>
    			<version>1.9.13</version>
    		</dependency>
    		
    		<dependency>
    			<groupId>commons-fileupload</groupId>
    			<artifactId>commons-fileupload</artifactId>
    			<version>1.3.1</version>
    		</dependency>
    		<dependency>
    			<groupId>commons-io</groupId>
    			<artifactId>commons-io</artifactId>
    			<version>2.4</version>
    		</dependency>
    		<dependency>
    			<groupId>commons-codec</groupId>
    			<artifactId>commons-codec</artifactId>
    			<version>1.10</version>
    		</dependency>
    		
    	</dependencies>
    	<build>
    		<finalName>SSM_Maven_Login</finalName>
    	</build>
    </project>

*  5.2 applicationContext.xml

*  5.3 spring-dao.xml

*  5.4 spring-db.xml

<?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:p="http://www.springframework.org/schema/p"
    	xmlns:context="http://www.springframework.org/schema/context"
    	xmlns:mvc="http://www.springframework.org/schema/mvc"
    	xsi:schemaLocation="http://www.springframework.org/schema/beans      
                            http://www.springframework.org/schema/beans/spring-beans-3.1.xsd      
                            http://www.springframework.org/schema/context      
                            http://www.springframework.org/schema/context/spring-context-3.1.xsd      
                            http://www.springframework.org/schema/mvc      
                            http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
    
    	<bean id="propertyConfigurer"
    		class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    		<property name="location" value="classpath:jdbc.properties" />
    	</bean>
    	<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
    		destroy-method="close">
    		<property name="driverClassName" value="${driver}" />
    		
    		<property name="url" value="${url}" />
    		
    		<property name="username" value="${username}" />
    		
    		<property name="password" value="${password}" />
    		
    		<property name="initialSize" value="${initialSize}" />
    		
    		<property name="maxActive" value="${maxActive}" />
    		
    		<property name="maxIdle" value="${maxIdle}" />
    		
    		<property name="minIdle" value="${minIdle}" />
    		
    		<property name="maxWait" value="${maxWait}" />
    	</bean>
    
    	
    	<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
    		<property name="dataSource" ref="dataSource" />
    		
    		<property name="mapperLocations" value="classpath:com/ssm/mapper/*.xml"></property>
    	</bean>
    </beans>

*  5.5 spring-tx.xml

*  5.6 spring-mvc.xml

<?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:p="http://www.springframework.org/schema/p"
    	xmlns:context="http://www.springframework.org/schema/context"
    	xmlns:mvc="http://www.springframework.org/schema/mvc"
    	xsi:schemaLocation="http://www.springframework.org/schema/beans      
                            http://www.springframework.org/schema/beans/spring-beans-3.1.xsd      
                            http://www.springframework.org/schema/context      
                            http://www.springframework.org/schema/context/spring-context-3.1.xsd      
                            http://www.springframework.org/schema/mvc      
                            http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
    
    
    	
    	<mvc:annotation-driven />
    	<mvc:default-servlet-handler />
    	
    	<context:component-scan base-package="com.ssm.controller" />
    	
    	<bean
    		class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
    		<property name="messageConverters">
    			<list>
    				<ref bean="mappingJacksonHttpMessageConverter" /> 
    			</list>
    		</property>
    	</bean>
    	
    	<bean
    		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    		<property name="prefix" value="/WEB-INF/jsp/" />
    		<property name="suffix" value=".jsp" />
    	</bean>
    	
    	<bean id="mappingJacksonHttpMessageConverter"
    		class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">
    		<property name="supportedMediaTypes">
    			<list>
    				<value>text/html;charset=UTF-8</value>
    			</list>
    		</property>
    	</bean>
    	
    	<bean id="multipartResolver"
    		class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
    		
    		<property name="defaultEncoding" value="utf-8" />
    		
    		<property name="maxUploadSize" value="10485760000" />
    		
    		<property name="maxInMemorySize" value="40960" />
    	</bean>
    </beans>

*  5.7 jdbc.properties

driver=com.mysql.jdbc.Driver
    url=jdbc:mysql://localhost:3306/CRM
    username=root
    password=tanghh
    initialSize=0
    maxActive=20
    maxIdle=20
    minIdle=1
    maxWait=60000

*  5.7 log4j.properties

log4j.rootLogger=WARN, Console, RollingFile
    
    #Console
    log4j.appender.Console=org.apache.log4j.ConsoleAppender
    log4j.appender.Console.layout=org.apache.log4j.PatternLayout
    log4j.appender.Console.layout.ConversionPattern=%d [%t] %-5p [%c] - %m%n
    
    #RollingFile
    #log4j.appender.RollingFile=org.apache.log4j.DailyRollingFileAppender
    #log4j.appender.RollingFile.File=/var/log/Maven_SSM.log
    #log4j.appender.RollingFile.layout=org.apache.log4j.PatternLayout
    #log4j.appender.RollingFile.layout.ConversionPattern=%d [%t] %-5p [%c] - %m%n
    
    #Hibernate level
    #log4j.logger.org.hibernate=ERROR
    log4j.logger.org.hibernate.cache.ehcache.AbstractEhcacheRegionFactory=ERROR
    log4j.logger.org.hibernate.search.impl.ConfigContext=ERROR
    log4j.logger.net.sf.ehcache.config.CacheConfiguration=ERROR
    
    #Project defalult level
    #log4j.logger.com.thinkgem.jeesite=DEBUG
    log4j.logger.com.maven=DEBUG

*  5.8 web.xml

<?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" version="3.0">
      <display-name>Archetype Created Web Application</display-name>
      <welcome-file-list>
        <welcome-file>/WEB-INF/jsp/login.jsp</welcome-file>
      </welcome-file-list>
      <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
      </context-param>
      <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
      </listener>
      <filter>
        <filter-name>encodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <async-supported>true</async-supported>
        <init-param>
          <param-name>encoding</param-name>
          <param-value>UTF-8</param-value>
        </init-param>
      </filter>
      <filter-mapping>
        <filter-name>encodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
      </filter-mapping>
      <servlet>
        <servlet-name>SpringMVC</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
          <param-name>contextConfigLocation</param-name>
          <param-value>classpath:spring-mvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
        <async-supported>true</async-supported>
      </servlet>
      <servlet-mapping>
        <servlet-name>SpringMVC</servlet-name>
        <url-pattern>/</url-pattern>
      </servlet-mapping>
    </web-app>

6、编写源代码

*  6.1 controller层：UserController.java

package com.ssm.controller;
    
    import java.util.HashMap;
    import java.util.Map;
    
    import javax.annotation.Resource;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpSession;
    
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.servlet.ModelAndView;
    
    import com.ssm.entity.User;
    import com.ssm.service.UserService;
    
    /**
     * 用户登录控制层
     * @author tom
     *
     */
    @Controller
    @RequestMapping("/user")
    public class UserController {
    
    	@Resource
    	private UserService userService;
    
    	/**
    	 * 用户登录
    	 * 
    	 * @param req
    	 * @param mv
    	 * @return
    	 */
    	@RequestMapping("/login")
    	public ModelAndView login(HttpServletRequest req, ModelAndView mv) {
    
    		Map<String, String> map = new HashMap<String, String>();
    		map.put("username", req.getParameter("username"));
    		map.put("password", req.getParameter("password"));
    		User user = userService.login(map);
    		if (user != null) {
    			HttpSession session = req.getSession();
    			session.setAttribute("username", map.get("username"));
    			System.out.println(map.get("username"));
    			mv.setViewName("index");
    		} else {
    			mv.addObject("message", "用户名或密码输入错误,请重新输入");
    			mv.setViewName("login");
    		}
    		return mv;
    
    	}
    
    }

*  6.2 DAO接口层：UserDao.java

package com.ssm.dao;
    
    import java.util.Map;
    
    import com.ssm.entity.User;
    
    public interface UserDao {
    
    
    	/**
    	 * 登录
    	 * 
    	 * @param map
    	 * @return
    	 */
    	public User login(Map<String, String> map);
    
    }

*  6.3 Model层：User.java

package com.ssm.entity;
    
    import java.io.Serializable;
    
    public class User implements Serializable {
    
    	private static final long serialVersionUID = 1L;
    
    	private int id;
    	private String username;
    	private String password;
    
    	public int getId() {
    		return id;
    	}
    
    	public void setId(int id) {
    		this.id = id;
    	}
    
    	public String getUsername() {
    		return username;
    	}
    
    	public void setUsername(String username) {
    		this.username = username;
    	}
    
    	public String getPassword() {
    		return password;
    	}
    
    	public void setPassword(String password) {
    		this.password = password;
    	}
    
    }

*  6.4 Mybatis映射文件

<?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.ssm.dao.UserDao">
    	<resultMap id="BaseResultMap" type="com.ssm.entity.User">
    		<result column="id" property="id" jdbcType="INTEGER" />
    		<result column="username" property="username" jdbcType="VARCHAR" />
    		<result column="password" property="password" jdbcType="VARCHAR" />
    
    	</resultMap>
    
    
    	
    	<select id="login" parameterType="java.util.Map" resultType="com.ssm.entity.User">
    		SELECT
    		*
    		FROM
    		u_user
    		WHERE
    		username=#{username,jdbcType=VARCHAR}
    		AND
    		password=#{password,jdbcType=VARCHAR}
    	</select>
    
    </mapper>

*  6.5 service接口层：UserService.java

package com.ssm.service;
    
    import java.util.Map;
    
    import com.ssm.entity.User;
    
    public interface UserService {
    
    
    	/**
    	 * 登录
    	 * 
    	 * @param map
    	 * @return
    	 */
    	public User login(Map<String, String> map);
    
    }

*  6.6 service接口层的实现类：UserServiceImpl.java

package com.ssm.service.impl;
    
    import java.util.Map;
    
    import javax.annotation.Resource;
    
    import org.springframework.stereotype.Service;
    
    import com.ssm.dao.UserDao;
    import com.ssm.entity.User;
    import com.ssm.service.UserService;
    
    @Service("UserService")
    public class UserServiceImpl implements UserService {
    
    	@Resource
    	private UserDao userDao;
    
    	public User login(Map<String, String> map) {
    		return userDao.login(map);
    	}
    
    }

7、数据库配置

![70 5][]

# 微信公众号 #

![20210317121117777.jpg][]

[70]: /images/20220526/17be531f07564458b1fc6a3b149864e8.png
[70 1]: /images/20220526/ba84cfbf33074c47a154991b49311517.png
[70 2]: /images/20220526/46b3c3b5e9f144c0b8e66776e1bdbf63.png
[70 3]: https://img-blog.csdn.net/20180425113205827?watermark/2/text/aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM4NzYyMjM3/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70
[70 4]: /images/20220526/33c359459bcf44c591a7d9a3314edd15.png
[70 5]: /images/20220526/6e1f59ce0b56456c83cd2025e3a10358.png
[20210317121117777.jpg]: /images/20220526/65f3158d6d9e49fd936df999454a8a4e.png