IDEA搭建SSM项目实现增删改查

ゝ一纸荒年。 2022-04-06 15:44 504阅读 0赞

首先打开IDEA，File—>New—>Project创建项目

![20181209180328458.jpg][]

选择左侧导航栏里的Maven，勾上勾，选择webapp

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTU5NTcwMA_size_16_color_FFFFFF_t_70][]

按如下图进行填写

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTU5NTcwMA_size_16_color_FFFFFF_t_70 1][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTU5NTcwMA_size_16_color_FFFFFF_t_70 2][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTU5NTcwMA_size_16_color_FFFFFF_t_70 3][]

创建完成后进入项目，右下角弹出的提示点击右边的Enable Auto-Import，自动配置

![20181209181308190.jpg][]

连接数据库，我用的是Mysql数据库，准备好有数据的数据库表

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTU5NTcwMA_size_16_color_FFFFFF_t_70 4][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTU5NTcwMA_size_16_color_FFFFFF_t_70 5][]

在pom.xml里导入所需jar包：

![20181210095935943.jpg][]

<?xml version="1.0" encoding="UTF-8"?>
    <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>
      <packaging>war</packaging>
    
      <name>Student-ssm</name>
      <groupId>com.accp</groupId>
      <artifactId>Student-ssm</artifactId>
      <version>1.0-SNAPSHOT</version>
    
      <dependencies>
          <dependency>
              <groupId>org.aspectj</groupId>
              <artifactId>aspectjweaver</artifactId>
              <version>1.8.8</version>
          </dependency>
          
          <dependency>
              <groupId>org.springframework</groupId>
              <artifactId>spring-webmvc</artifactId>
              <version>4.3.12.RELEASE</version>
          </dependency>
          <dependency>
              <groupId>org.springframework</groupId>
              <artifactId>spring-tx</artifactId>
              <version>4.3.12.RELEASE</version>
          </dependency>
          <dependency>
              <groupId>org.springframework</groupId>
              <artifactId>spring-jdbc</artifactId>
              <version>4.3.12.RELEASE</version>
          </dependency>
    
          <dependency>
              <groupId>org.mybatis</groupId>
              <artifactId>mybatis</artifactId>
              <version>3.4.5</version>
          </dependency>
    
          <dependency>
              <groupId>org.mybatis</groupId>
              <artifactId>mybatis-spring</artifactId>
              <version>1.3.1</version>
          </dependency>
    
          <dependency>
              <groupId>mysql</groupId>
              <artifactId>mysql-connector-java</artifactId>
              <version>5.1.44</version>
          </dependency>
    
          
          <dependency>
              <groupId>com.alibaba</groupId>
              <artifactId>druid</artifactId>
              <version>1.1.2</version>
          </dependency>
    
          <dependency>
              <groupId>javax.servlet</groupId>
              <artifactId>jstl</artifactId>
              <version>1.2</version>
          </dependency>
          
          <dependency>
              <groupId>javax.servlet</groupId>
              <artifactId>javax.servlet-api</artifactId>
              <version>3.0.1</version>
              <scope>provided</scope>
          </dependency>
      </dependencies>
    
    </project>

总体结构：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTU5NTcwMA_size_16_color_FFFFFF_t_70 6][]

web.xml代码：

<?xml version="1.0" encoding="UTF-8"?>
    <web-app version="2.4"
             xmlns="http://java.sun.com/xml/ns/j2ee"
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
    
        
        <filter>
            <filter-name>characterEncodingFilter</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>
            <init-param>
                <param-name>forceEncoding</param-name>
                <param-value>true</param-value>
            </init-param>
        </filter>
        <filter-mapping>
            <filter-name>characterEncodingFilter</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:springmvc.xml</param-value>
            </init-param>
        </servlet>
        <servlet-mapping>
            <servlet-name>springmvc</servlet-name>
            <url-pattern>/</url-pattern>
        </servlet-mapping>
    
    </web-app>

springmvc.xml代码：

<?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:aop="http://www.springframework.org/schema/aop"
           xmlns:mvc="http://www.springframework.org/schema/mvc"
           xmlns:tx="http://www.springframework.org/schema/tx"
           xmlns:context="http://www.springframework.org/schema/context"
           xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context-3.2.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx-3.2.xsd"
           default-autowire="byName">
    
        <context:component-scan base-package="com.accp"/>
    
        
        <bean name="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
            <property name="url" value="jdbc:mysql://localhost:3306/student?useUnicode=true&characterEncoding=utf-8"/>
            <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
            <property name="username" value="root"/>
            <property name="password" value="994994"/>
        </bean>
    
        
        <bean name="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean" p:typeAliasesPackage="com.accp.entity">
            <property name="dataSource" ref="dataSource"/>
            <property name="mapperLocations" value="classpath:xml/*.xml"/>
        </bean>
    
        
        <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
            <property name="sqlSessionFactoryBeanName" value="sessionFactory"/>
            <property name="basePackage" value="com.accp.dao"/>
        </bean>
    
        
        <bean name="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager" p:dataSource-ref="dataSource"/>
        <tx:advice id="txAdvice" transaction-manager="transactionManager">
            <tx:attributes>
                <tx:method name="add*" propagation="REQUIRED"/>
                <tx:method name="update*"/>
                <tx:method name="delete*"/>
                <tx:method name="query*" propagation="NOT_SUPPORTED"/>
            </tx:attributes>
        </tx:advice>
        <aop:config>
            <aop:pointcut id="pointcut" expression="execution(* com.accp.service..*.*(..))"/>
            <aop:advisor advice-ref="txAdvice" pointcut-ref="pointcut"/>
        </aop:config>
    
        
        <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
            <property name="prefix" value="/WEB-INF/jsp/"/>
            <property name="suffix" value=".jsp"/>
        </bean>
    
        <mvc:annotation-driven/>
    
    </beans>

entity学生实体类代码：

package com.accp.entity;
    
    
    public class Studentinfo {
    
      private long sid;
      private String sname;
      private String sgender;
      private long sage;
      private String saddress;
      private String semail;
    
    
      public long getSid() {
        return sid;
      }
    
      public void setSid(long sid) {
        this.sid = sid;
      }
    
    
      public String getSname() {
        return sname;
      }
    
      public void setSname(String sname) {
        this.sname = sname;
      }
    
    
      public String getSgender() {
        return sgender;
      }
    
      public void setSgender(String sgender) {
        this.sgender = sgender;
      }
    
    
      public long getSage() {
        return sage;
      }
    
      public void setSage(long sage) {
        this.sage = sage;
      }
    
    
      public String getSaddress() {
        return saddress;
      }
    
      public void setSaddress(String saddress) {
        this.saddress = saddress;
      }
    
    
      public String getSemail() {
        return semail;
      }
    
      public void setSemail(String semail) {
        this.semail = semail;
      }
    
    }

dao层StudentinfoDao代码：

package com.accp.dao;
    
    import com.accp.entity.Studentinfo;
    
    import java.util.List;
    
    public interface StudentinfoDao {
    
        List<Studentinfo> queryStudent();
    
        int addStudentinfo(Studentinfo studentinfo);
    
        int deleteStudentinfo(Studentinfo studentinfo);
    
        int updateStudentinfo(Studentinfo studentinfo);
    
        Studentinfo getByStudentId(Studentinfo studentinfo);
    
    }

resources下xml里Studentinfo.xml代码：

<?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.accp.dao.StudentinfoDao">
    
        <select id="queryStudent" resultType="Studentinfo">
            select * from studentinfo;
        </select>
    
        <select id="getByStudentId" resultType="Studentinfo">
            select * from studentinfo where sid = #{sid}
        </select>
    
        <insert id="addStudentinfo">
            insert into studentinfo value (default ,#{sname},#{sgender},#{sage},#{saddress},#{semail})
        </insert>
    
        <delete id="deleteStudentinfo">
            delete from studentinfo where sid = #{sid}
        </delete>
    
        <update id="updateStudentinfo">
            update studentinfo
            <trim prefix="set" suffixOverrides="," suffix="where sid=#{sid}">
                <if test="sname!=null">sname = #{sname},</if>
                <if test="sgender!=null">sgender = #{sgender},</if>
                <if test="sage!=null">sage = #{sage},</if>
                <if test="saddress!=null">saddress = #{saddress},</if>
                <if test="semail!=null">semail = #{semail},</if>
            </trim>
        </update>
    </mapper>

service层StudentinfoService代码：

package com.accp.service;
    
    import com.accp.entity.Studentinfo;
    
    import java.util.List;
    
    public interface StudentinfoService {
    
        List<Studentinfo> queryStudent();
    
        int addStudentinfo(Studentinfo studentinfo);
    
        int deleteStudentinfo(Studentinfo studentinfo);
    
        int updateStudentinfo(Studentinfo studentinfo);
    
        Studentinfo getByStudentId(Studentinfo studentinfo);
    
    }

service层Impl实现类StudentinfoServiceImpl代码：

package com.accp.service.impl;
    
    import com.accp.dao.StudentinfoDao;
    import com.accp.entity.Studentinfo;
    import com.accp.service.StudentinfoService;
    import org.springframework.stereotype.Service;
    
    import javax.annotation.Resource;
    import java.util.List;
    
    @Service
    public class StudentinfoServiceImpl implements StudentinfoService {
    
        @Resource
        private StudentinfoDao studentinfoDao;
    
        public List<Studentinfo> queryStudent() {
            return studentinfoDao.queryStudent();
        }
    
        public int addStudentinfo(Studentinfo studentinfo) {
            return studentinfoDao.addStudentinfo(studentinfo);
        }
    
        public int deleteStudentinfo(Studentinfo studentinfo) {
            return studentinfoDao.deleteStudentinfo(studentinfo);
        }
    
        public int updateStudentinfo(Studentinfo studentinfo) {
            return studentinfoDao.updateStudentinfo(studentinfo);
        }
    
        public Studentinfo getByStudentId(Studentinfo studentinfo) {
            return studentinfoDao.getByStudentId(studentinfo);
        }
    }

controller控制层StudentinfoController代码：

package com.accp.controller;
    
    import com.accp.entity.Studentinfo;
    import com.accp.service.StudentinfoService;
    import org.springframework.stereotype.Controller;
    import org.springframework.ui.Model;
    import org.springframework.web.bind.annotation.RequestMapping;
    
    import javax.annotation.Resource;
    
    @Controller
    public class StudentinfoController {
    
        @Resource
        private StudentinfoService studentinfoService;
    
        @RequestMapping("/showList")
        public String showList(Model model){
            model.addAttribute("students",studentinfoService.queryStudent());
            return "index";
        }
    
        @RequestMapping("/JumpAdd")
        public String jumpAdd(){
            return "add";
        }
    
        @RequestMapping("/AddList")
        public String addList(Studentinfo studentinfo){
            studentinfoService.addStudentinfo(studentinfo);
            return "redirect:showList";
        }
    
        @RequestMapping("/DeleteS")
        public String deleteS(Studentinfo studentinfo){
            studentinfoService.deleteStudentinfo(studentinfo);
            return "redirect:showList";
        }
    
        @RequestMapping("/JumpUpdate")
        public String jumpUpdate(Studentinfo studentinfo,Model model){
            model.addAttribute("stu",studentinfoService.getByStudentId(studentinfo));
            return "update";
        }
    
        @RequestMapping("/UpdateS")
        public String updateS(Studentinfo studentinfo){
            studentinfoService.updateStudentinfo(studentinfo);
            return "redirect:showList";
        }
    }

jsp页面代码：

显示页面(包含删除操作)：

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
    <html>
    <head>
        <title>Title</title>
    </head>
    <body>
    <a href="JumpAdd">增加</a>
        <table width="100%" border="1">
            <tr>
                <td>编号</td>
                <td>姓名</td>
                <td>性别</td>
                <td>年龄</td>
                <td>地址</td>
                <td>email</td>
                <td colspan="2">操作</td>
            </tr>
            <c:forEach items="${students}" var="stu">
                <tr>
                    <td>${stu.sid}</td>
                    <td>${stu.sname}</td>
                    <td>${stu.sgender}</td>
                    <td>${stu.sage}</td>
                    <td>${stu.saddress}</td>
                    <td>${stu.semail}</td>
                    <td><a href="DeleteS?sid=${stu.sid}">删除</a></td>
                    <td><a href="JumpUpdate?sid=${stu.sid}">修改</a></td>
                </tr>
            </c:forEach>
    
        </table>
    
    </body>
    </html>

添加页面：

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <html>
    <head>
        <title>添加</title>
    </head>
    <body>
    <form action="AddList" method="post">
        姓名：<input type="text" name="sname"></br>
        性别：<input type="text" name="sgender"></br>
        年龄：<input type="text" name="sage"></br>
        地址：<input type="text" name="saddress"></br>
        邮箱：<input type="text" name="semail"></br>
        <input type="submit"  value="添加">
    </form>
    </body>
    </html>

修改页面：

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
    <html>
    <head>
        <title>修改</title>
    </head>
    <body>
    <form action="UpdateS?sid=${stu.sid}" method="post">
        姓名：<input type="text" name="sname" value="${stu.sname}"></br>
        性别：<input type="text" name="sgender" value="${stu.sgender}"></br>
        年龄：<input type="text" name="sage" value="${stu.sage}"></br>
        地址：<input type="text" name="saddress" value="${stu.saddress}"></br>
        邮箱：<input type="text" name="semail" value="${stu.semail}"></br>
        <input type="submit" value="修改">
    </form>
    </body>
    </html>

显示效果：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTU5NTcwMA_size_16_color_FFFFFF_t_70 7][]

[20181209180328458.jpg]: /images/20220406/e3ee399515e44c34b8bbb5209b653bd4.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTU5NTcwMA_size_16_color_FFFFFF_t_70]: /images/20220406/560a898a18b743928ab9ca1590442a66.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTU5NTcwMA_size_16_color_FFFFFF_t_70 1]: /images/20220406/d1eaed3421b3426bad141bd4866817f6.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTU5NTcwMA_size_16_color_FFFFFF_t_70 2]: /images/20220406/d368a239c8fe410cacaf7c216ddac058.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTU5NTcwMA_size_16_color_FFFFFF_t_70 3]: /images/20220406/01121b983dfd4ae392dcbe19f736513d.png
[20181209181308190.jpg]: /images/20220406/3fa327fa53e546b1a973543e00392f2c.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTU5NTcwMA_size_16_color_FFFFFF_t_70 4]: /images/20220406/d7566215c9e84bc4ae1935c2bc4c7d94.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTU5NTcwMA_size_16_color_FFFFFF_t_70 5]: /images/20220406/645908abd8d141d1a544a0de8227b10b.png
[20181210095935943.jpg]: /images/20220406/26159a56c49e40a3bcbff709ae807378.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTU5NTcwMA_size_16_color_FFFFFF_t_70 6]: /images/20220406/d0c8b7ebc03442849500f589bba0dcfc.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTU5NTcwMA_size_16_color_FFFFFF_t_70 7]: /images/20220406/dcc0bd9cd72d4708915af79c16221726.png