SSM整合案例

1. SSM整合案例

项目工程目录

导入pom.xml

<?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/xsd/maven-4.0.0.xsd">
    <parent>
        <artifactId>com.liu.Spring_ioc</artifactId>
        <groupId>org.example</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>com.liu.spring_ssm</artifactId>

    <dependencies>
        <!--spring相关-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>5.0.5.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.8.7</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.0.5.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>5.0.5.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>5.0.5.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.0.5.RELEASE</version>
        </dependency>

        <!--servlet和jsp-->
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.0</version>
        </dependency>

        <!--mybatis相关-->
        <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>5.1.47</version>
        </dependency>
        <dependency>
            <groupId>c3p0</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.1.2</version>
        </dependency>

        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>

    </dependencies>
</project>

appliacationContext.xml:spring相关的配置文件

<?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:tx="http://www.springframework.org/schema/tx"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd">

    <!--组件扫描service和mapper-->
    <context:component-scan base-package="com.liu">
        <!--排除controller的扫描-->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

    <!--加载jdbc.properties文件-->
    <context:property-placeholder location="classpath:jdbc.properties"/>

    <!--引用数据源c3p0-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="jdbcUrl" value="${jdbc.url}"/>
        <property name="driverClass" value="${jdbc.driver}"/>
        <property name="user" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
    </bean>

    <!--集成mybatis-->
    <!--配置sqlSessionFactory-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <!--加载mybatis核心文件-->
        <property name="configLocation" value="classpath:sqlMapConfig-spring.xml"/>
    </bean>

    <!--扫描mapper所在的包  为mapper创建实现类 自动产生bean-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.liu.mapper"/>
    </bean>
    <!--集成mybatis-->
    <!--声明式事务控制-->
    <!--平台事务管理器-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <!--配置事務增强-->
    <tx:advice id="txAdvice">
        <tx:attributes>
            <tx:method name="*"/>
        </tx:attributes>
    </tx:advice>

    <!--事务的aop织入-->
    <aop:config>
        <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.liu.service.impl.*.*(..))"/>
    </aop:config>

</beans>

jdbc.properties文件

jdbc.url=jdbc:mysql://localhost:3306/test?useUnicode=true&characterEncoding=UTF-8
jdbc.driver=com.mysql.jdbc.Driver
jdbc.username=root
jdbc.password=123lyl

log4j.properties文件

### direct log messages to stdout ###
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=%d{ABSOLUTE} %5p %c{1}:%L - %m%n

### direct messages to file mylog.log ###
log4j.appender.file=org.apache.log4j.FileAppender
log4j.appender.file.File=c:/mylog.log
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n

### set log levels - for more verbose logging change 'info' to 'debug' ###

log4j.rootLogger=debug, stdout

spring-mvc（web层核心配置文件）

<?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>
    <!--定义别名-->
    <typeAliases>
        <!--<typeAlias type="com.liu.domain.Account" alias="account"></typeAlias>-->
        <!--默认扫描com.liu.mapper包下的接口，会自动生成别名，别名是接口名（大or小写）-->
        <package name="com.liu.domain"/>
    </typeAliases>

    <!---->
</configuration>
<?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:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd
       http://www.springframework.org/schema/mvc
       http://www.springframework.org/schema/mvc/spring-mvc.xsd
">

    <!--组件扫描 主要扫描controller-->
    <context:component-scan base-package="com.liu.controller"/>

    <!--配置mvc的注解驱动-->
    <mvc:annotation-driven/>

    <!--内部资源解析器-->
    <bean id="resourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <!--前缀-->
        <property name="prefix" value="/WEB-INF/pages/"></property>
        <!--后缀-->
        <property name="suffix" value=".jsp"></property>
    </bean>
    <!--开放静态资源访问权限-->
    <mvc:default-servlet-handler/>

</beans>

sqlMapConfig-spring.xml------mybatis核心配置文件

<?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>
    <!--定义别名-->
    <typeAliases>
        <!--<typeAlias type="com.liu.domain.Account" alias="account"></typeAlias>-->
        <!--默认扫描com.liu.mapper包下的接口，会自动生成别名，别名是接口名（大or小写）-->
        <package name="com.liu.domain"/>
    </typeAliases>

    <!---->
</configuration>

web工程核心配置文件（spring）

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
         version="4.0">

    <!--配置spring的监听器-->

    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>
    <!--springmvc的前端控制器-->
    <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-mvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>DispatcherServlet</servlet-name>
        <!--代表任何访问都要进入我的springmvc框架-->
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <!--乱码过滤器-->
    <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>
    </filter>
    <filter-mapping>
        <filter-name>CharacterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

</web-app>

AccountMapper.xml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">
<!--namespace 命名空间 就是你的mapper接口全限类名-->

<mapper namespace="com.liu.mapper.AccountMapper">
        <!--抽取sql片段-->
        <sql id="files">
            select * from account
        </sql>

        <select id="findAll" resultType="account">
            <include refid="files"></include>
        </select>

        <select id="findById" parameterType="int" resultType="account">
            select * from account where id=#{id}
        </select>

        <insert id="save" parameterType="account">
            insert  into account(name,money) values (#{name},#{money})
        </insert>

        <delete id="delete" parameterType="int">
            delete from account where id=#{id}
        </delete>

        <update id="update" parameterType="account">
            update account set name = #{name},money = #{money} where id = #{id}
        </update>

        <select id="findLikeName" parameterType="account" resultType="account">
            select * from account
            <where>
                <if test="name != null and name != ''">
                  and  name like concat('%',#{name},'%')
                </if>
            </where>
        </select>

</mapper>

index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<h1><a href="${pageContext.request.contextPath}/account/findAll"> hello world!!!</a></h1>
</body>
</html>

save.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>添加</title>
</head>
<body>
    <h1>添加账户信息表单</h1>
    <form name="accountForm" action="${pageContext.request.contextPath}/account/save" method="post">
        账户名称:<input type="text" name="name"><br>
        账户金额:<input type="text" name="money"><br>
        <input type="submit" value="保存"><br>
    </form>
</body>
</html>

update.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<form action="${pageContext.request.contextPath}/account/update" method="post">
    <input type="hidden" name="id" value="${account.id}">
    <--没有隐藏域表单的id，修改不了，踩坑踩坑踩坑踩坑--></--没有隐藏域表单的id，修改不了，踩坑踩坑踩坑踩坑-->
    名称： <input type="text" name="name" value="${account.name}"> <br>
    名称： <input type="text" name="money" value="${account.money}"> <br>
    <input type="submit" value="编辑完成">
</form>
</body>
</html>

accountList.jsp

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%--
  Created by IntelliJ IDEA.
  User: 
  Date: 2022/2/10
  Time: 17:03
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<h1>展示账户数据列表
    <a href="${pageContext.request.contextPath}/save.jsp">添加</a>
</h1>

<form action="${pageContext.request.contextPath}/account/like" method="post">
    <input type="text" name="name">
    <input type="submit">
</form>
<table border="1px">
    <tr>
        <th>账户编号</th>
        <th>账户名称</th>
        <th>账户金额</th>
        <th> 操 作</th>
    </tr>
    <c:forEach items="${accountList}" var="account">
        <tr>
            <td>${account.id}</td>
            <td>${account.name}</td>
            <td>${account.money}</td>
            <td>
                <a href="javascript:void(0)" οnclick="del('${account.id}')">删除</a> &nbsp;
                <a href="${pageContext.request.contextPath}/account/toUpdate?id=${account.id}">修改</a>
            </td>
        </tr>
    </c:forEach>

</table>
<script>
    function del(accountId) {
        if (confirm("你确定要删除吗？？")) {
            location.href = "${pageContext.request.contextPath}/account/delete/" + accountId;
        }

    }
</script>
</body>
</html>

controller层

package com.liu.controller;

import com.liu.domain.Account;
import com.liu.service.AccountService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.servlet.ModelAndView;

import java.util.List;

/**
 * @author Liu
 * @date 2022/2/10
 * @apiNote
 */
@Controller
@RequestMapping("/account")
public class AccountController {
    @Autowired
    private AccountService accountService;

    //保存
    @RequestMapping(value = "/save",produces = "text/html;charset=UTF-8")
    public String save(Account account) {
        accountService.save(account);
        return "redirect:/account/findAll";
    }

    //查询
    @RequestMapping("/findAll")
    public ModelAndView findAll() {
        List<Account> accountList = accountService.findAll();
        ModelAndView modelAndView=new ModelAndView();
        modelAndView.addObject("accountList",accountList);
        modelAndView.setViewName("accountList");
        return modelAndView;
    }

    @RequestMapping("/like")
    public ModelAndView findLikeName(String name) {
        List<Account> likeName = accountService.findLikeName(name);
        ModelAndView modelAndView=new ModelAndView();
        modelAndView.addObject("accountList",likeName);
        modelAndView.setViewName("accountList");
        return modelAndView;
    }
    @RequestMapping("/delete/{accountId}")
   public String delete(@PathVariable("accountId") Integer accountId){
        System.out.println(accountService.delete(accountId));
        return "redirect:/account/findAll";
   }

   @RequestMapping("/toUpdate")
   public String toUpdate(int id, Model model){
       Account serviceById = accountService.findById(id);
       model.addAttribute("account",serviceById);
        return "update";
    }

    @RequestMapping("/update")
    public String update(Account account){
        accountService.update(account);
        return "redirect:/account/findAll";
    }

}

service层

package com.liu.service.impl;

import com.liu.domain.Account;
import com.liu.mapper.AccountMapper;
import com.liu.service.AccountService;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.io.IOException;
import java.io.InputStream;
import java.util.List;

/**
 * @author Liu
 * @date 2022/2/10
 * @apiNote
 */
@Service("accountService")
public class AccountServiceImpl implements AccountService {

    @Autowired
    private AccountMapper accountMapper;

    public void save(Account account) {
        accountMapper.save(account);
    }

    public List<Account> findAll() {
        List<Account> accountList = accountMapper.findAll();
        return accountList;
    }

    public Account findById(int id) {
        return accountMapper.findById(id);
    }

    public int delete(int id) {
        int re = accountMapper.delete(id);
        return re;
    }

    public List<Account> findLikeName(String name) {
        return accountMapper.findLikeName(name);
    }

    public void update(Account account) {
        accountMapper.update(account);
    }


}

package com.liu.mapper;

import com.liu.domain.Account;
import org.apache.ibatis.annotations.Param;

import java.util.List;

/**
 * @author Liu
 * @date 2022/2/10
 * @apiNote
 */
public interface AccountMapper {

    void save(Account account);

    List<Account> findAll();

    Account findById(int id);

    int delete(int id);

    List<Account> findLikeName(@Param("name") String name);
    //设置参数的目的在于，表单name属性传过来，与之匹配，然后就mybatis识别，查询成功，返回给页面。

    void update(Account account);
}

javaBean

package com.liu.domain;

/**
 * @author Liu
 * @date 2022/2/10
 * @apiNote
 */
public class Account {
    private Integer id;
    private String name;
    private Double money;

    public Account() {
    }

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Double getMoney() {
        return money;
    }

    public void setMoney(Double money) {
        this.money = money;
    }

    @Override
    public String toString() {
        return "Account{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", money=" + money +
                '}';
    }
}

恭喜你们，ssm增删改查完美OK了。