Spring、SpringMVC和mybatis完整整合实例（含案例）

目录结构，其中mybatis.xml并没有使用,已经整合到Spring容器中

一、配置坐标（pom.xml）

其中c3p0连接池并没有使用，用的druid连接池

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
    <spring.version>5.0.2.RELEASE</spring.version>
    <slf4j.version>1.6.6</slf4j.version>
    <log4j.version>1.2.12</log4j.version>
    <mysql.version>5.1.40</mysql.version>
    <mybatis.version>3.4.5</mybatis.version>
  </properties>

  <dependencies>
    <!-- https://mvnrepository.com/artifact/com.alibaba/druid -->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>druid</artifactId>
      <version>1.1.10</version>
    </dependency>

    <!-- spring -->
    <dependency>
      <groupId>org.aspectj</groupId>
      <artifactId>aspectjweaver</artifactId>
      <version>1.6.8</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aop</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>compile</scope>
    </dependency>

    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>${mysql.version}</version>
    </dependency>

    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>servlet-api</artifactId>
      <version>2.5</version>
      <scope>provided</scope>
    </dependency>

    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>jsp-api</artifactId>
      <version>2.0</version>
      <scope>provided</scope>
    </dependency>

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

    <!-- log start -->
    <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>

    <!-- log end -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>${mybatis.version}</version>
    </dependency>

    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.0</version>
    </dependency>

    <dependency>
      <groupId>c3p0</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.1.2</version>
      <type>jar</type>
      <scope>compile</scope>
    </dependency>
  </dependencies>

二、配置log4j配置文件(log4j.properties)

其中log4j.appender.LOGFILE.File需要保证有这个文件，自己配置

# Set root category priority to INFO and its only appender to CONSOLE.
#log4j.rootCategory=INFO, CONSOLE            debug   info   warn error fatal
log4j.rootCategory=info, CONSOLE, LOGFILE

# Set the enterprise logger category to FATAL and its only appender to CONSOLE.
log4j.logger.org.apache.axis.enterprise=FATAL, CONSOLE

# CONSOLE is set to be a ConsoleAppender using a PatternLayout.
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=%d{ISO8601} %-6r [%15.15t] %-5p %30.30c %x - %m\n

# LOGFILE is set to be a File appender using a PatternLayout.
log4j.appender.LOGFILE=org.apache.log4j.FileAppender
log4j.appender.LOGFILE.File=dC:\Users\dell\Desktop\homework\axis.log
log4j.appender.LOGFILE.Append=true
log4j.appender.LOGFILE.layout=org.apache.log4j.PatternLayout
log4j.appender.LOGFILE.layout.ConversionPattern=%d{ISO8601} %-6r [%15.15t] %-5p %30.30c %x - %m\n

三、整合

1.配置web.xml文件（Spring、SpringMVC）配置

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
  <display-name>Archetype Created Web Application</display-name>
    <!--配置中文解码,值一定要是UTF-8-->
  <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>
  
  <!--监听Spring配置文件，让其修改生命周期-->
<listener>
  <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
  <!--不写的话，默认监听WEB-INF下的applicationContext.xml文件所以修改目录地址-->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
  </context-param>

    <!--前端分发器-->
  <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:springmvc.xml</param-value>
    </init-param>
  </servlet>
  <servlet-mapping>
    <servlet-name>dispatcherServlet</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>

</web-app>

2.整合mybatis到Spring容器中管理（applicationContext.xml）

1.解除对SpringMVC中Controller的管理。
2.其中mybatis采用xml的方式执行sql语句所以在配置SqlSessionFactory工厂需要加上一个mapperLocations属性来找映射文件所在目录。如是注解方式则无需加。

<?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"
       xmlns:tx="http://www.springframework.org/schema/tx"
       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/aop
	http://www.springframework.org/schema/aop/spring-aop.xsd
	http://www.springframework.org/schema/tx
	http://www.springframework.org/schema/tx/spring-tx.xsd">
    <!--spring配置-->
    <!--开启注解的扫描，希望处理service和dao，controller不需要Spring框架去处理-->
    <context:component-scan base-package="edu.xiao">
        <!--配置哪些注解不扫描-->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

    <!--Spring整合mybatis-->
    <!--1.配置连接池-->
    <bean class="com.alibaba.druid.pool.DruidDataSource" id="dataSources">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/eesy"/>
        <property name="username" value="root"/>
        <property name="password" value="y426759813."/>
    </bean>
    <!--2.配置SqlSessionFactory工厂-->
    <bean class="org.mybatis.spring.SqlSessionFactoryBean" id="sqlSessionFactory">
        <property name="dataSource" ref="dataSources"/>
        <!-- xml方式，自动扫描mapping.xml文件 -->
        <property name="mapperLocations" value="classpath:mapper/*.xml"/>
    </bean>
    <!--3. 配置AccountDao接口所在包及注解方式-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer" id="mapperScannerConfigurer">
        <property name="basePackage" value="edu.xiao.dao"/>
    </bean>

    <!--Spring配置声明式事务管理,这样增删改就会提交，更新数据库-->
    <!--1.配置事务管理器-->
    <bean class="org.springframework.jdbc.datasource.DataSourceTransactionManager" id="dataSourceTransactionManager">
        <property name="dataSource" ref="dataSources"/>
    </bean>

    <!--2.配置事务通知-->
    <tx:advice transaction-manager="dataSourceTransactionManager" id="transactionInterceptor">
        <tx:attributes>
            <tx:method name="find*" read-only="true"/>
            <tx:method name="*" isolation="DEFAULT"/>
        </tx:attributes>
    </tx:advice>

    <!--配置AOP增强-->
    <aop:config>
        <aop:advisor advice-ref="transactionInterceptor"
                     pointcut="execution( * edu.xiao.service.impl.*tServiceImpl.*(..))"/>
    </aop:config>


</beans>

3.配置SpringMVC的配置文件（springmvc.xml）

只扫描Controller注解

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="
        http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/mvc
        http://www.springframework.org/schema/mvc/spring-mvc.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd">
    <!--springMVC配置-->
    <!--开启注解扫描，只扫描Controller注解-->
    <context:component-scan base-package="edu.xiao">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" />
    </context:component-scan>

    <!--配置的视图解析器对象-->
    <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/pages/"/>
        <property name="suffix" value=".jsp"/>
    </bean>

    <!--过滤静态资源-->
    <mvc:resources location="/css/" mapping="/css/**" />
    <mvc:resources location="/images/" mapping="/images/**" />
    <mvc:resources location="/js/" mapping="/js/**" />

    <!--开启SpringMVC注解的支持-->
    <mvc:annotation-driven/>

</beans>

四、编写测试代码

准备数据库表和pojo类

pojo实体类Account

package edu.xiao.pojo;

import java.io.Serializable;

public class Account implements Serializable {
    private Integer id;
    private String name;
    private Double money;

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

    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;
    }
}

1.编写Spring框架的表现层（AccountController）

package edu.xiao.controller;

import edu.xiao.pojo.Account;
import edu.xiao.service.IAccountService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.List;

@Controller
@RequestMapping("/account")
public class AccountController {
    @Autowired
    private IAccountService service;
    @RequestMapping("/testSpring")
    public ModelAndView testSpring() {
        ModelAndView modelAndView = new ModelAndView();
        modelAndView.setViewName("success"); /*跳转到成功页面*/
        System.out.println("表现层：testSuccess"); /*打印，方法执行成功*/
        List<Account> listAccount = service.findListAccount(); /*与业务层交互，查询所有*/
        modelAndView.addObject("list",listAccount);/*把数据传入request域*/
        for (Account account : listAccount) {
            System.out.println(account);/*打印用户信息*/
        }
        return modelAndView;
    }

    @RequestMapping("/saveAccount")
    public void saveAccount(HttpServletRequest req, HttpServletResponse res,Account account) throws Exception {
         service.saveAccount(account); /*调用业务层的保存，然后在查询所有，跳转到前端success页面*/
         res.sendRedirect(req.getContextPath()+"/account/testSpring");
        return;
    }
}

2.编写持久层（IAccountDao）

因为整合了mybatis所以不需要写实现类

package edu.xiao.dao;

import edu.xiao.pojo.Account;
import org.springframework.stereotype.Repository;

import java.util.List;

@Repository("accountDao")
public interface IAccountDao {
    List<Account> findListAccount();
    void saveAccount(Account account);
}

3.编写业务层

i.业务接口类（IAccountService）

package edu.xiao.service;

import edu.xiao.pojo.Account;

import java.util.List;

public interface IAccountService {
    List<Account> findListAccount();
    void saveAccount(Account account);
}

o.业务接口实现类（AccountServiceImpl）

package edu.xiao.service.impl;

import edu.xiao.dao.IAccountDao;
import edu.xiao.pojo.Account;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import edu.xiao.service.IAccountService;

import java.util.List;
@Service("accountService")
public class AccountServiceImpl implements IAccountService {
    @Autowired
    private IAccountDao accountDao;
    @Override
    public List<Account> findListAccount() {
        System.out.println("业务层：查询所有。。。");
        return accountDao.findListAccount();
    }

    @Override
    public void saveAccount(Account account) {
        accountDao.saveAccount(account);
    }
}

4.编写一个页面测试

i.编写一个用户信息保存的表单页（index.jsp）

其中input的name值一定要和pojo的属性值一致，让SpringMVC自动封装

<%--
  Created by IntelliJ IDEA.
  User: dell
  Date: 2020/4/8
  Time: 21:43
  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>
<form action="account/saveAccount" method="post">
    姓名：<input type="text" name="name"><br>
    金额：<input type="text" name="money"><br>
         <input type="submit">

</form>
</body>
</html>

o.编写一个效果页面（success.jsp）

<%--
  Created by IntelliJ IDEA.
  User: dell
  Date: 2020/4/8
  Time: 21:42
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<h3>配置成功！</h3><br>
<c:forEach items="${list}" var="account">
    ${account.name} ： ${account.money} <br/>
</c:forEach>
</body>
</html>

五、测试效果图

1.测试页面输入

2.效果页

3.打印输出

4.数据库