SSM【史上最详细整合】-原创手记-慕课网

tags: SSM整合与阅读项目

导入开发包

asm-3.2.0.RELEASE.jar
asm-3.3.1.jar
c3p0-0.9.jar
cglib-2.2.2.jar
com.springsource.net.sf.cglib-2.2.0.jar
com.springsource.org.aopalliance-1.0.0.jar
com.springsource.org.apache.commons.logging-1.1.1.jar
com.springsource.org.aspectj.weaver-1.6.8.RELEASE.jar
jackson-core-asl-1.7.2.jar
jackson-mapper-asl-1.7.2.jar
javassist-3.17.1-GA.jar
javax.servlet.jsp.jstl.jar
jsf-api.jar
jsf-impl.jar
jstl-impl.jar
junit.jar
log4j-1.2.17.jar
mybatis-3.2.2.jar
mybatis-spring-1.2.0.jar
mysql-connector-java-5.1.26-bin.jar
org.hamcrest.core_1.1.0.v20090501071000.jar
org.springframework.transaction-3.2.2.RELEASE.jar
slf4j-api-1.7.5.jar
slf4j-log4j12-1.7.5.jar
spring-aop-3.2.0.RELEASE.jar
spring-beans-3.2.0.RELEASE.jar
spring-context-3.2.0.RELEASE.jar
spring-core-3.2.0.RELEASE.jar
spring-expression-3.2.0.RELEASE.jar
spring-jdbc-3.2.0.RELEASE.jar
spring-orm-3.2.0.RELEASE.jar
spring-test-3.2.0.RELEASE.jar
spring-web-3.2.0.RELEASE.jar
spring-webmvc-3.2.0.RELEASE.jar

整合Spring与Mybatis

相关的配置文件

log4j.properties


# Rules reminder:
# DEBUG < INFO < WARN < ERROR < FATAL

# Global logging configuration
log4j.rootLogger=debug,stdout

# My logging configuration...
log4j.logger.cn.jbit.mybatisdemo=DEBUG

## Console output...
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p %d %C: %m%n

log4j.logger.org.apache.ibatis=DEBUG
## log4j.logger.org.apache.jdbc.SimpleDataSource=DEBUG
log4j.logger.org.apache.ibatis.jdbc.ScriptRunner=DEBUG
## log4j.logger.com.ibatis.sqlmap.engine.impl.SqlMapclientDelegate=DEBUG
log4j.logger.java.sql.Connection=DEBUG
log4j.logger.java.sql.Statement=DEBUG
log4j.logger.java.sql.PreparedStatement=DEBUG

myBatis-config.xml文件

通过package, 可以直接指定package的名字， mybatis会自动扫描你指定包下面的javabean,并且默认设置一个别名，默认的名字为非限定类名来作为它的别名。


<?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>
<!-- 通过别名简化对类的使用 -->
<typeAliases>
<!--        <typeAlias type="cn.itcast.scm.entity.Dept" alias="Dept" />
 -->
 <!-- 
        通过package, 可以直接指定package的名字， mybatis会自动扫描你指定包下面的javabean,
      并且默认设置一个别名，默认的名字为非限定类名来作为它的别名。    
       -->

 <package name="zhongfucheng.entity"/>
 </typeAliases>

<!--    <mappers>
        <mapper resource="cn/itcast/scm/entity/DeptMapper.xml" />
    </mappers>
         -->
</configuration>

applicationContext.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:tx="http://www.springframework.org/schema/tx"
       xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"
       xmlns:p="http://www.springframework.org/schema/p"
       xsi:schemaLocation="http://www.springframework.org/schema/beans 
    http://www.springframework.org/schema/beans/spring-beans-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/tx 
    http://www.springframework.org/schema/tx/spring-tx-3.2.xsd
    http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd">

    <!-- 配置数据源，记得去掉myBatis-config.xml的数据源相关配置 -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="com.mysql.jdbc.Driver" />
        <property name="jdbcUrl"
                  value="jdbc:mysql://localhost:3306/scm?useUnicode=true&amp;characterEncoding=UTF-8" />
        <property name="user" value="root" />
        <property name="password" value="root" />
    </bean>
    <!-- 配置session工厂 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <property name="configLocation" value="classpath:myBatis-config.xml" />
        <!--配置扫描式加载SQL映射文件,记得去掉mybatis-config配置-->
    <!--    <property name="mapperLocations" value="classpath:zhongfucheng/dao/*.xml"/>-->

    </bean>

    <!-- 配置事务管理器,管理数据源事务处理 -->
    <bean id="transactionManager"
          class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
    </bean>
    <!-- 配置事务通知 -->
    <tx:advice id="advice" transaction-manager="transactionManager">
        <tx:attributes>
            <!-- 默认只处理运行时异常，可加rollback-for="Exception/Throwable"等处理所有异常或包括错误 -->
            <tx:method name="insert*" propagation="REQUIRED"
                       rollback-for="Exception" />
            <tx:method name="update*" propagation="REQUIRED"
                       rollback-for="Exception" />
            <tx:method name="delete*" propagation="REQUIRED"
                       rollback-for="Exception" />
            <tx:method name="*" propagation="SUPPORTS" />
        </tx:attributes>
    </tx:advice>
    <!-- 配置切面织入的范围,后边要把事务边界定在service层 -->
    <aop:config>
        <aop:advisor advice-ref="advice"
                     pointcut="execution(* cn.itcast.scm.service.impl.*.*(..))" />
    </aop:config>
    <!-- 配置SessionTemplate，已封装了繁琐的数据操作，提交事务都不用做了。 -->
    <bean id="sqlSessionTemplate" class="org.mybatis.spring.SqlSessionTemplate">
        <constructor-arg name="sqlSessionFactory" ref="sqlSessionFactory" />
    </bean>

    <!-- <context:component-scan base-package="*" /> -->

    <!-- 自动扫描组件，要把controller去除，他们是在spring-mvc.xml中配置，如果不去除会影响事务管理。 -->
    <context:component-scan base-package="cn.itcast">
        <context:exclude-filter type="annotation"
                                expression="org.springframework.stereotype.Controller" />
    </context:component-scan>

    <!-- 配置 转换器，对于在basePackage设置的包（包括子包）下的接口类，
    如果接口类的全类名在Mapper.xml文件中和定义过命名空间一致，
     将被转换成spring的BEAN，在调用 
        的地方通过@Autowired方式将可以注入接口实例 -->

<!--
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="sqlSessionFactory" ref="sqlSessionFactory" />

        &lt;!&ndash;这里包名留意要不要改&ndash;&gt;
        <property name="basePackage" value="zhongfucheng.dao" />
    </bean>
-->

</beans>

编写实体及sql映射文件

SQL脚本

drop database if exists mybatis;
create database mybatis CHARACTER SET UTF8;
use mybatis;

create table dept(
    dept_id int primary key auto_increment,
    dept_name varchar(50),
    dept_address varchar(50)
);

insert into dept(dept_name,dept_address) values('研发部一部','广州');
insert into dept(dept_name,dept_address) values('研发部二部','广州');
insert into dept(dept_name,dept_address) values('研发部三部','深圳');
select * from dept;

实体：


package zhongfucheng.entity;

import java.io.Serializable;

public class Dept implements Serializable {
    private Integer deptId;
    private String deptName;
    private String deptAddress;
    public Integer getDeptId() {
        return deptId;
    }
    public void setDeptId(Integer deptId) {
        this.deptId = deptId;
    }
    public String getDeptName() {
        return deptName;
    }
    public void setDeptName(String deptName) {
        this.deptName = deptName;
    }
    public String getDeptAddress() {
        return deptAddress;
    }
    public void setDeptAddress(String deptAddress) {
        this.deptAddress = deptAddress;
    }
    @Override
    public String toString() {
        return "Dept [deptId=" + deptId + ", deptName=" + deptName
                + ", deptAddress=" + deptAddress + "]";
    }

}

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="zhongfucheng.entity.DeptMapper">
    <resultMap type="Dept" id="deptResultMap">
        <id property="deptId" column="dept_id" />
        <result property="deptName" column="dept_name" />
        <result property="deptAddress" column="dept_address" />
    </resultMap>
    <!-- id和命名空间用来定位SQL语句，parameterType表示参数的类型，resultMap返回类型 -->
    <select id="selectDept" parameterType="Integer" resultMap="deptResultMap">
        <!--参数的写法#{deptID} -->
        select * from dept where dept_id=#{deptID}
    </select>

    <insert id="insertDept" parameterType="Dept">
        insert into dept(dept_name,dept_address) values(#{deptName},#{deptAddress});
    </insert>

</mapper>

mybatis配置文件加载映射文件


<?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>
<!-- 通过别名简化对类的使用 -->
<typeAliases>
<!--        <typeAlias type="cn.itcast.scm.entity.Dept" alias="Dept" />
 -->
 <!-- 
        通过package, 可以直接指定package的名字， mybatis会自动扫描你指定包下面的javabean,
      并且默认设置一个别名，默认的名字为非限定类名来作为它的别名。    
       -->

 <!--这里的包名留意要不要改-->
 <package name="zhongfucheng.entity"/>
 </typeAliases>

    <mappers>
        <mapper resource="zhongfucheng/dao/DeptMapper.xml" />
    </mappers>

</configuration>

编写Dao以及实现

接口


package zhongfucheng.dao;

import zhongfucheng.entity.Dept;

/**
 * Created by ozc on 2017/8/8.
 */

public interface DeptDao {
    Dept selectDept(Integer deptId);
    int insertDept(Dept dept);
}

实现：


package zhongfucheng.dao.impl;

import org.mybatis.spring.SqlSessionTemplate;
import org.springframework.stereotype.Repository;
import zhongfucheng.entity.Dept;

import javax.annotation.Resource;

/**
 * Created by ozc on 2017/8/8.
 */
@Repository("deptDao")
public class DeptDaoImpl implements zhongfucheng.dao.DeptDao {

    @Resource
    private SqlSessionTemplate sqlSessionTemplate;

    /**
     * 根据部门编号查询部门信息
     * @param deptId 部门编号
     * @return 部门信息
     */
    @Override
    public Dept selectDept(Integer deptId){
        Dept dept=  sqlSessionTemplate.selectOne("zhongfucheng.entity.DeptMapper.selectDept", deptId);
        return dept;
    }
    /**
     * 添加部门信息
     * @param dept 部门信息
     * @return 添加成功的记录数
     */
    @Override
    public int insertDept(Dept dept){
        System.out.println("------dao.dept:"+dept);
        return sqlSessionTemplate.insert("zhongfucheng.entity.DeptMapper.insertDept", dept);
    }
}

测试spring与mybatis整合


import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import zhongfucheng.dao.impl.DeptDaoImpl;
import zhongfucheng.entity.Dept;

/**
 * Created by ozc on 2017/8/8.
 */
public class TestDeptDao {

    //@Resource //这里没法使用，后继版本有其它方式可以注入
    static private DeptDaoImpl deptDao;
    @BeforeClass
    public static void setUpBeforeClass() throws Exception {
        ApplicationContext context =new ClassPathXmlApplicationContext("applicationContext.xml");
        deptDao=(DeptDaoImpl) context.getBean("deptDao");
    }

    @AfterClass
    public static void tearDownAfterClass() throws Exception {
    }

    @Test
    public void testSelectDept() {
        System.out.println(deptDao.selectDept(1));
    }

    @Test
    public void testInsertDept() {
        Dept dept=new Dept();
        //dept.setDeptId(117);
        dept.setDeptName("name117");
        dept.setDeptAddress("address117");
        System.out.println("受影响行数："+deptDao.insertDept(dept));
    }
}

整合SpringMVC

配置文件

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:mvc="http://www.springframework.org/schema/mvc"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-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
    ">
    <!-- 同时开启json格式的支持 -->
    <mvc:annotation-driven></mvc:annotation-driven>
    <!-- <context:component-scan base-package="*"/> -->

    <!-- 扫描所有的controller 但是不扫描service -->
    <context:component-scan base-package="zhongfucheng">
        <context:include-filter type="annotation"
            expression="org.springframework.stereotype.Controller" />
        <context:exclude-filter type="annotation"
            expression="org.springframework.stereotype.Service" />
    </context:component-scan>

</beans>

web.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">

    <!--Spring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>

    <!--Mvc分配器-->
    <servlet>
        <servlet-name>mvc</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>mvc</servlet-name>
        <url-pattern>*.action</url-pattern>
    </servlet-mapping>

    <!--中文过滤器-->
    <filter>
        <filter-name>encodingFilter</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>encodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
</web-app>

编写Action


package zhongfucheng.action;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import zhongfucheng.dao.impl.DeptDaoImpl;
import zhongfucheng.entity.Dept;

import javax.annotation.Resource;

/**
 * Created by ozc on 2017/8/8.
 */
@Controller
@RequestMapping(value="/dept")
public class DeptAction {
    @Resource
    private DeptDaoImpl deptDao;

    @RequestMapping(value="/insert")
    public String insert(Dept dept){

        System.out.println("---action.dept:"+dept);
        deptDao.insertDept(dept);
        return "forward:/jsp/main.jsp";
    }
}

测试SSI整合

index.jsp页面


<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
</head>
<body>
    <form action="dept/insert.action" method="post">
        名称：<input type="text"   name="deptName"><br> 
        地址：<input type="text" name="deptAddress"><br>
        <input type="submit" value="ok">
    </form>
</body>
</html>

main.jsp页面：


<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<html>
<head>
</head>
<body>
 this is main jsp
</body>
</html>

这里写图片描述

优化

如果想要Spring与Mybatis更加完美地结合，其实我们的Dao并不需要写实现，直接写接口和映射文件就行了，这样一来，我们就可以舍弃DaoImpl了。

在Spring配置文件中加入以下的代码：


    <!-- 配置 转换器，对于在basePackage设置的包（包括子包）下的接口类，
        如果接口类的全类名在Mapper.xml文件中和定义过命名空间一致，
        将被转换成spring的BEAN，在调用的地方通过@Autowired方式将可以注入接口实例 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="sqlSessionFactory" ref="sqlSessionFactory" />

        <!--这里包名留意要不要改-->
        <property name="basePackage" value="zhongfucheng.dao" />
    </bean>

我们的映射文件中把命名空间写成是Dao的全路径


//Dao的全路径，那么Spring就会自动帮我们创建对象，注入进去
<mapper namespace="zhongfucheng.dao.DeptDao">
    <resultMap type="Dept" id="deptResultMap">
        <id property="deptId" column="dept_id" />
        <result property="deptName" column="dept_name" />
        <result property="deptAddress" column="dept_address" />
    </resultMap>

    <!-- id和命名空间用来定位SQL语句，parameterType表示参数的类型，resultMap返回类型 -->
    <select id="selectDept" parameterType="Integer" resultMap="deptResultMap">
        <!--参数的写法#{deptID} -->
        select * from dept where dept_id=#{deptID}
    </select>

    <insert id="insertDept" parameterType="Dept">
        insert into dept(dept_name,dept_address) values(#{deptName},#{deptAddress});
    </insert>

</mapper>

在配置工厂的时候，我们可以配置mapperLocations属性，这样一来，我们就不用在Mybatis中逐个加载配置文件了。


    <!-- 配置session工厂 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <!--这里的路径和名字留意要不要改-->
        <property name="configLocation" value="classpath:myBatis-config.xml" />

        <!--配置扫描式加载SQL映射文件,记得去掉mybatis-config配置，使用了这个，在Mybatis配置文件中就不用加载对应的映射文件了-->
        <!--这里留意路径是否要改-->
        <property name="mapperLocations" value="classpath:zhongfucheng/dao/*.xml"/>
    </bean>

总结

SSM整合和SSH整合的步骤差不多

log4j配置文件
web.xml配置文件
- SpringContext监听器
- SpringMVC核心过滤器
- 中文过滤器
Spring配置文件
- 数据库连接池
- Mybatis总配置文件
- SessionFactory
- 事务
- 扫描注解，不扫描controller
- sessionTemplate(简化SQLSession的操作)
- 转换器[使用Mapper来进行代理]
Mybatis映射文件
SpringMVC配置文件
- 扫描controller，不扫描service