ssm框架详细讲解（二）集成

最新推荐文章于 2022-03-01 18:03:37 发布

置顶风一般的男子丶小靓仔

最新推荐文章于 2022-03-01 18:03:37 发布

阅读量523

点赞数 1

分类专栏： ssm

本文链接：https://blog.youkuaiyun.com/qq_40976761/article/details/94000855

版权

ssm 专栏收录该内容

19 篇文章

订阅专栏

1.搭建环境

整合流程

整合说明：SSM整合可以使用多种方式，咱们会选择XML + 注解的方式

三层架构中,控制层调用Service层,Service层调用Dao层,控制层会将Bean对象注入到SpringMVCIOC容器中,Service和Dao层将会Bean对象注入到SpringIOC容器中.

1.1整合思路

1.先搭建整合的环境

2.在搭建SpringMVC,只搭建控制层

3.在搭建Service层,集成Spring

4.最后使用Spring整合MyBatis框架

工程搭建

1.1创建表结构

1.2引入依赖

<?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">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.itheima</groupId>
    <artifactId>ssm</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>war</packaging>

    <properties>
        <spring.version>5.0.2.RELEASE</spring.version>
        <slf4j.version>1.6.6</slf4j.version>
        <log4j.version>1.2.12</log4j.version>
        <mysql.version>5.1.6</mysql.version>
        <mybatis.version>3.4.5</mybatis.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    </properties>

    <!--依赖jar包-->
    <dependencies>
        <!-- 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>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.tomcat.maven</groupId>
                <artifactId>tomcat7-maven-plugin</artifactId>
                <version>2.2</version>
                <configuration>
                    <port>18081</port>
                    <path>/</path>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

1.3创建javaBean(Account)

package com.itheima.domain;

import lombok.Data;
import lombok.ToString;

@Data
@ToString
public class Account {
    private Integer id;
    private String name;
    private double money;
}

重点集成SpingMVC

集成的步骤：

1.web.xml中配置SpringMVC的核心配置文件

2.web.xml中配置Spring的POST的编码过滤器

3.创建SpringMVC的核心配置文件spring.xml

4.在springMVC的核心配置注解驱动，包扫描，视图解析器，静态资源过滤器等.

1.1集成SpringMVC

web.xml配置

web.xml中配置前端核心控制器和POST编码过滤器

代码如下：

<?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_3_1.xsd"
         version="3.1">
    <!--配置解决post中文乱码的过滤器-->
    <!--characterEncodingFilter:字符编码过滤器-->
    <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>
    <!--配置前端控制器,服务器启动必须加载springmvc.xml配置文件-->
    <servlet>
        <servlet-name>dispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <!-- 配置初始化参数，创建完DispatcherServlet对象，加载springmvc.xml配置文件 -->
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:springmvc.xml</param-value>
        </init-param>
        <!-- 服务器启动的时候，让DispatcherServlet对象创建 -->
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
</web-app>

1.2SpingMVC核心配置文件

在resources下创建springmvc.xml核心配置文件

代码如下：

<?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">
    <!--SpingMVC的核心配置文件-->
    <!--1.扫描controller的注解,别的不扫描-->
    <context:component-scan base-package="com.itheima"/>
    <!--配置视图解析器-->
    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <!-- JSP文件所在的目录 -->
        <property name="prefix" value="/WEB-INF/pages/" />
        <!-- 文件的后缀名 -->
        <property name="suffix" value=".jsp" />
    </bean>
    <!--设置静态资源不过滤,如果目录不存在,会报红,这里不是程序问题,是idea检测到目录不存在-->
    <mvc:resources location="/css/" mapping="/css/**" />
    <mvc:resources location="/images/" mapping="/images/**" />
    <mvc:resources location="/js/" mapping="/js/**" />
    <!--开启SpingMVC的注解的支持-->
    <mvc:annotation-driven/>
</beans>

创建控制层和对应的页面

1.1创建控制层

面试题：@controller与@service的区别，还有@controller里可以@service吗？

package com.itheima.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

/***
 * 控制层
 */
@Controller
@RequestMapping(value = "/account")
public class AccountController {
    /***
     * list集合的查询
     * @return
     */
    @RequestMapping(value = "/list")
    public String list(){
        System.out.println("list");
        return "list";
    }
    /***
     * 增加
     */
    @RequestMapping(value = "/add")
    public String add(){
        System.out.println("add");
        return "redirect:/account/list";
    }
}

1.2创建页面

访问页面：

后台结果:

集成Spring

准备工作

1.1创建Service接口

创建com.itheima.service.AccountService接口，代码如下:

1.2创建Service实现类

创建com.itheima.service.impl.AccountServiceImpl实现类，代码如下：

package com.itheima.service.impl;

import com.itheima.domain.Account;
import com.itheima.service.AccountService;

import java.util.List;

public class AccountServiceImpl implements AccountService{
    /***
     * 集合
     * @return
     */
    @Override
    public List<Account> list() {
        System.out.println("list");
        return null;
    }

    /***
     * 增加
     * @param account
     * @return
     */
    @Override
    public int add(Account account) {
        System.out.println("add");
        return 0;
    }
}

1.3集成Sping

创建spring核心配置文件

<?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: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">

    <!-- 开启注解扫描-->
    <context:component-scan base-package="com.itheima" />
</beans>

1.4包扫描问题

包扫描冲突解决：

问题解决：此时spring核心配置文件配置会扫描com.itheima的包及所有的子包，会将所有对象Bean交给SpringIOC容器管理，而前面springmvc也会扫描com.itheima的包及所有的子包，会将所有的对象的Bean交给SpringMVCIOC容器管理，此时会导致2个容器中Bean的冲突，会导致后续事务失效，所以我们需要解决一下。

我们可以让springmvc只扫描@Controller的注解，而@Conntroller注解不扫描，其他的都扫描

修改Spring.xml的注解

修改SpringMVC.xml的注解

集成Spring,SpringMVC

集成Spring和SpringMVC，只需要创建SpringIOC容器即可，SpringMVCIOC容器设置为自己的父容器

创建SpringIOC容器可以使用监听器来实现，所以我们需要在web.xml中配置监听器。

1.1修改web.xml添加如下监听器，并指定spring的核心配置文件.

1.2集成的测试

修改AccountController,在AccountController中调用Service，代码如下

package com.itheima.controller;

import com.itheima.domain.Account;
import com.itheima.service.AccountService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

import java.util.List;

/***
 * Autowring for Bean Class:Bean的类自动装配
 * 控制层
 */
@Controller
@RequestMapping(value = "/account")
public class AccountController {
    //注入AccountService
    @Autowired
    private AccountService accountService;
    /***
     * list集合的查询
     * @return
     */
    @RequestMapping(value = "/list")
    public String list(){
       //调用Service
        final List<Account> list = accountService.list();
        System.out.println(list+"-------:]");
        return "list";
    }
    /***
     * 增加
     */
    @RequestMapping(value = "/add")
    public String add(){
        final Account account = new Account();
        account.setName("分一般的男子");
        account.setMoney(100000d);
        System.out.println("add");
        //保存
        final int add = accountService.add(account);
        System.out.println("影响的行数:"+add);
        return "redirect:/account/list";
    }
}

集成MyBatis

package com.itheima.dao;

import com.itheima.domain.Account;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;

import java.util.List;

public interface AccountDao {
    /***
     * 保存的账号
     * @param account
     * @return
     */
    @Insert("insert into account(name,money) values(#{name},#{money})")
    int add(Account account);

    /***
     * 查询所有
     * @return
     */
    @Select("select * from account")
    List<Account> list();
}

1.1修改spring.xml在spring.xml中添加如下配置

<?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">

    <!-- 开启注解扫描-->
    <!--修改：要扫描的是service和dao层的注解，要忽略web层的注解，因为web层让SpringMVC管理-->
    <context:component-scan base-package="com.itheima">
    <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
    <!--配置的连接池的对象-->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql:///ssm"/>
        <property name="username" value="root"/>
        <property name="password" value="root"/>
    </bean>

    <!-- 配置SqlSession的工厂 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <!-- 配置扫描dao的包 -->
    <bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.itheima.dao"/>
    </bean>
</beans>

1.2Spring的集成的测试

package com.itheima;

import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class SpringMyBatisTest {
    @Test
    public void testSpringMyBatis(){
        ApplicationContext act= new ClassPathXmlApplicationContext("spring.xml");
        //获取容器中所有的Bean的名字
        final String[] names = act.getBeanDefinitionNames();
        for (String name : names) {
            System.out.println(name);
        }
    }
}

后台显示

1.3三层对接测试

实现Controller调用Service，Service调用Dao，所以我们需要在Service中注入Dao，并调用Dao。

AccountServiceImpl的代码

package com.itheima.service.impl;

import com.itheima.dao.AccountDao;
import com.itheima.domain.Account;
import com.itheima.service.AccountService;
import org.springframework.beans.factory.annotation.Autowired;

import java.util.List;

/***
 * 服务实现类
 */
public class AccountServiceImpl implements AccountService{
    //注入Dao层
    @Autowired
    private AccountDao accountDao;
    /***
     * 集合
     * @return
     */
    @Override
    public List<Account> list() {
        return accountDao.list();
    }

    /***
     * 增加
     * @param account
     * @return
     */
    @Override
    public int add(Account account) {
        return accountDao.add(account);
    }
}

AccountController代码

package com.itheima.controller;

import com.itheima.domain.Account;
import com.itheima.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.RequestMapping;

import java.util.List;

/***
 * Autowring for Bean Class:Bean的类自动装配
 * 控制层
 */
@Controller
@RequestMapping(value = "/account")
public class AccountController {
    //注入AccountService
    @Autowired
    private AccountService accountService;
    /***
     * list集合的查询
     * @return
     */
    @RequestMapping(value = "/list")
    public String list(Model model){
       //调用Service
        List<Account> accounts = accountService.list();
        model.addAttribute("accounts",accounts);
        return "list";
    }
    /***
     * 增加
     */
    @RequestMapping(value = "/add")
    public String add(){
        final Account account = new Account();
        account.setName("分一般的男子");
        account.setMoney(100000d);
        System.out.println("add");
        //保存
        final int add = accountService.add(account);
        System.out.println("影响的行数:"+add);
        return "redirect:/account/list";
    }
}

list.jsp的代码

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>网页</title>
</head>
<body>
<c:forEach items="${accounts}" var="account">
    <div>${account}</div>
</c:forEach>
</body>
</html>

网页显示

重点项目完整的配置：

1.1web.xml

<?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_3_1.xsd"
         version="3.1">

    <!-- 配置解决中文乱码的过滤器 -->
    <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>

    <!-- 配置前端控制器：服务器启动必须加载，需要加载springmvc.xml配置文件 -->
    <servlet>
        <servlet-name>dispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <!-- 配置初始化参数，创建完DispatcherServlet对象，加载springmvc.xml配置文件 -->
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:springmvc.xml</param-value>
        </init-param>
        <!-- 服务器启动的时候，让DispatcherServlet对象创建 -->
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <!-- 配置Spring的监听器 -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <!-- 配置加载类路径的配置文件 -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:spring.xml</param-value>
    </context-param>
</web-app>

1.2Springmvc.xml

<?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">

    <!-- 扫描controller的注解，别的不扫描 -->
    <context:component-scan base-package="com.itheima" use-default-filters="false">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

    <!-- 配置视图解析器 -->
    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <!-- JSP文件所在的目录 -->
        <property name="prefix" value="/WEB-INF/pages/" />
        <!-- 文件的后缀名 -->
        <property name="suffix" value=".jsp" />
    </bean>

    <!-- 设置静态资源不过滤,如果目录不存在，会报红，这里不是程序问题，是idea检测到目录不存在-->
    <mvc:resources location="/css/" mapping="/css/**" />
    <mvc:resources location="/images/" mapping="/images/**" />
    <mvc:resources location="/js/" mapping="/js/**" />

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

1.3spring.xml的配置

<?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">

    <!-- 开启注解扫描，要扫描的是service和dao层的注解，要忽略web层注解，因为web层让SpringMVC框架去管理 -->
    <context:component-scan base-package="com.itheima">
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

    <!-- 配置的连接池对象 -->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://127.0.0.1:3306/spring5"/>
        <property name="username" value="root"/>
        <property name="password" value="itcast"/>
    </bean>

    <!-- 配置SqlSession的工厂 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <!-- 配置扫描dao的包 -->
    <bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.itheima.dao"/>
    </bean>

    <!-- 配置事务管理器 -->
    <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>

    <!-- 配置事务通知 -->
    <tx:advice id="txAdvice" transaction-manager="txManager">
        <tx:attributes>
            <tx:method name="list*" read-only="true"/>
            <tx:method name="*" isolation="DEFAULT"/>
        </tx:attributes>
    </tx:advice>

    <!-- 配置AOP增强事务 -->
    <aop:config>
        <aop:advisor advice-ref="txAdvice" pointcut="execution(public * com.itheima.service.impl.*.*(..))"/>
    </aop:config>
</beans>

1.4pom.xml的配置

<?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">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.itheima</groupId>
    <artifactId>ssm</artifactId>
    <version>1.0-SNAPSHOT</version>
    <packaging>war</packaging>

    <properties>
        <spring.version>5.0.2.RELEASE</spring.version>
        <slf4j.version>1.6.6</slf4j.version>
        <log4j.version>1.2.12</log4j.version>
        <mysql.version>5.1.6</mysql.version>
        <mybatis.version>3.4.5</mybatis.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    </properties>

    <!--依赖jar包-->
    <dependencies>
        <!-- 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>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.tomcat.maven</groupId>
                <artifactId>tomcat7-maven-plugin</artifactId>
                <version>2.2</version>
                <configuration>
                    <port>18081</port>
                    <path>/</path>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>