ssm整合

 ssm整合

 1、导jar包 
 
 2、配置DAO

  2-1、引入mybatis的配置文件sqlMapConfig.xml，内容可以为空，但是配置文件要有
     `<?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>
         <!-- mybatis核心配置文件 -->
         </configuration>`
 
  2-2、配置applicationContext-dao.xml，这里面包含数据源、会话工厂、mapper扫描

      `<?xml version="1.0" encoding="UTF-8"?>
         <beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
    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-4.0.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
    http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
    http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">

    <!-- 加载数据库的配置文件 -->
    <context:property-placeholder  location="classpath:db.properties"/>
    
    <!-- 数据库连接池 这里使用的是阿里巴巴吧德鲁伊连接池  destroy-method="close"表示数据库连接不使用的时候就把该连接重新放回连接池中方便下次调用 -->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource"
        destroy-method="close">
        <property name="driverClassName" value="${jdbc.driver}" />
        <property name="url" value="${jdbc.url}" />
        <property name="username" value="${jdbc.username}" />
        <property name="password" value="${jdbc.password}" />
        <!--最大连接数-->
        <property name="maxActive" value="10" />
         <!--最大可空闲连接数-->
        <property name="maxIdle" value="5" />
    </bean>
    <!-- mapper配置 -->
    <!-- 让spring管理sqlsessionfactory 使用mybatis和spring整合包中的SqlSessionFactoryBean -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- 数据库连接池 -->
        <property name="dataSource" ref="dataSource" />
        <!-- 加载mybatis的全局配置文件 -->
        <property name="configLocation" value="classpath:sqlMapConfig.xml" />
    </bean>
    
    <!-- 配置Mapper扫描器 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.zhang.dao"/>
    </bean>
    </beans>`
   2-3、配置db.properties，这里面包含数据库的驱动、url、账号等信息
    `jdbc.driver=com.mysql.jdbc.Driver
     jdbc.url=jdbc:mysql://localhost:3306/crm?characterEncoding=utf-8
     jdbc.username=root
     jdbc.password=root`

  2-4、配置applicationContext-service.xm，这里面只需要配置注解扫描

    `<?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
    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-4.0.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
    http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd 
    http://www.springframework.org/schema/tx 
    http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
    http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">

    <!-- @Service扫描 -->
    <context:component-scan base-package="com.zhang.service"></context:component-scan>
    </beans>`
  
  2-5、配置applicationContext-trans.xm，这里面配置事务管理器、通知、和切面
      
     `<?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
    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-4.0.xsd
    http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
    http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd 
    http://www.springframework.org/schema/tx 
    http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
    http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">

    <!-- 事务管理器 -->
    <bean id="transactionManager"
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!-- 数据源 -->
        <property name="dataSource" ref="dataSource" />
    </bean>
    
    <!-- 通知 -->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <!-- 传播行为 -->
            <tx:method name="save*" propagation="REQUIRED" />
            <tx:method name="insert*" propagation="REQUIRED" />
            <tx:method name="delete*" propagation="REQUIRED" />
            <tx:method name="update*" propagation="REQUIRED" />
            <tx:method name="find*" propagation="SUPPORTS" read-only="true" />
            <tx:method name="get*" propagation="SUPPORTS" read-only="true" />
        </tx:attributes>
    </tx:advice>
    
    <!-- 切面 -->
    <aop:config>
        <aop:advisor advice-ref="txAdvice"
            pointcut="execution(* com.zhang.service.*.*(..))" />
    </aop:config>
    </beans>`

  2-6、配置springMvc.xm，这里面配置注解扫描、注解驱动和视图解析器

    `<?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:context="http://www.springframework.org/schema/context"
    xmlns:dubbo="http://code.alibabatech.com/schema/dubbo" xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
        http://code.alibabatech.com/schema/dubbo http://code.alibabatech.com/schema/dubbo/dubbo.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">
    
      <!-- @controller注解扫描 -->
      <context:component-scan base-package="com.zhang.controller"></context:component-scan>
   
   
      <!--自动帮我们配置最新版的注解的处理器映射器和处理器适配器  -->
     <mvc:annotation-driven></mvc:annotation-driven>
    
    <!-- 配置视图解析器 
    作用:在controller中指定页面路径的时候就不用写页面的完整路径名称了,可以直接写页面去掉扩展名的名称
    -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <!-- 真正的页面路径 =  前缀 + 去掉后缀名的页面名称 + 后缀 -->
        <!-- 前缀 -->
        <property name="prefix" value="/jsp/"></property>
        <!-- 后缀 -->
        <property name="suffix" value=".jsp"></property>
    </bean>
     </beans>` 

2-7、配置web.xm，这里配置 springMvc前端控制器配置和spring监听

    `<?xml version="1.0" encoding="UTF-8"?>
     <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
    <display-name>crm2</display-name>
    <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
    </welcome-file-list>
  
    <!-- 加载spring容器:配置上下文的位置 -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:ApplicationContext-*.xml</param-value>
    </context-param>
    
    <!-- spring监听器 -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
  
     <!-- springMvc前端控制器 -->
     <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>
     <load-on-startup>2</load-on-startup>
    </servlet>
  
    <servlet-mapping>
     <servlet-name>springMVC</servlet-name>
     <url-pattern>/</url-pattern>
     <!-- 这里配置为/时需要在springMvc.xml中增加静态资源配置否则CSS、JS文件将没办法加载 -->
    </servlet-mapping>
  
  
  
     <!-- 配置Post请求乱码 -->
     <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>`