【职坐标】SSM框架整合

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SSM框架是目前为止企业中最为流行的开发框架。SSM框架中包含spring框架、springMVC框架以及Mybatis框架

搭建SSM的步骤如下所示
1.创建Java Web工程，并导入相应的jar包
SSM框架所需jar包的下载地址：http://pan.baidu.com/s/1kUCvuxp
2.配置Web.xml文件
对spring进行配置

  <!-- 配置spring配置文件的解析 -->  <context-param>      <param-name>contextConfigLocation</param-name>      <param-value>classpath:applicationContext.xml</param-value>  </context-param>  <listener>  <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>  </listener>

对springMVC进行配置

 <!-- 配置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:spring-mvc.xml</param-value>      </init-param>      <!-- 容器启动时就初始化 -->      <load-on-startup>1</load-on-startup>  </servlet>  <servlet-mapping>      <servlet-name>springMVC</servlet-name>      <url-pattern>/</url-pattern>  </servlet-mapping>

配置Web工程中的欢迎界面

<welcome-file-list>    <welcome-file>index.jsp</welcome-file>  </welcome-file-list>

3.配置springMVC文件

<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:mvc="http://www.springframework.org/schema/mvc"            xsi:schemaLocation="http://www.springframework.org/schema/beans                              http://www.springframework.org/schema/beans/spring-beans-3.1.xsd                              http://www.springframework.org/schema/context                              http://www.springframework.org/schema/context/spring-context-3.1.xsd                              http://www.springframework.org/schema/mvc                              http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd">        <!-- 设置使用注解的类所在的包 -->            <context:component-scan base-package="com.iotek.controller" />          <!-- 定义跳转的文件的前后缀 ，视图模式配置-->            <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">                <!-- 这里的配置我的理解是自动给后面action的方法return的字符串加上前缀和后缀，变成一个 可用的url地址 -->                <property name="prefix" value="/view/" />                <property name="suffix" value=".jsp" />            </bean>    </beans>

视图解析器会对controller方法的返回值进行加工，例如：controller的返回值为String类型的“success”时，则经过视图解析器解析之后需要跳转的页面为“/view/success.jsp”

4.使用spring对springMVC和Mybatis进行整合

spring整合Mybatis

装载数据源及sqlSessionFactory（spring-db.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:p="http://www.springframework.org/schema/p"        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-3.1.xsd                              http://www.springframework.org/schema/context                              http://www.springframework.org/schema/context/spring-context-3.1.xsd                              http://www.springframework.org/schema/mvc                              http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">        <!-- 引入配置文件 -->        <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">            <property name="location" value="classpath:jdbc.properties" />        </bean>        <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">            <property name="driverClassName" value="${driver}" />            <property name="url" value="${url}" />            <property name="username" value="${username}" />            <property name="password" value="${password}" />            <!-- 初始化连接大小 -->            <property name="initialSize" value="${initialSize}"></property>            <!-- 连接池最大数量 -->            <property name="maxActive" value="${maxActive}"></property>            <!-- 连接池最大空闲 -->            <property name="maxIdle" value="${maxIdle}"></property>            <!-- 连接池最小空闲 -->            <property name="minIdle" value="${minIdle}"></property>            <!-- 获取连接最大等待时间 -->            <property name="maxWait" value="${maxWait}"></property>        </bean>        <!-- spring和MyBatis完美整合，不需要mybatis的配置映射文件 -->        <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">            <property name="dataSource" ref="dataSource" />            <!-- 自动扫描mapping.xml文件 -->            <property name="mapperLocations" value="classpath:com/iotek/mapper/*.xml"></property>    </bean>      </beans>

数据源配置文件（jdbc.properties）

driver=com.mysql.jdbc.Driverurl=jdbc:mysql://localhost:3306/students_datausername=rootpassword=rootinitialSize=0maxActive=20maxIdle=20minIdle=1maxWait=60000

DAO层配置文件

<?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:p="http://www.springframework.org/schema/p"        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-3.1.xsd                              http://www.springframework.org/schema/context                              http://www.springframework.org/schema/context/spring-context-3.1.xsd                              http://www.springframework.org/schema/mvc                              http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">        <!-- DAO接口所在包名，Spring会自动查找其下的类 -->        <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">            <!--basePackage指定要扫描的包，在此包之下的映射器都会被搜索到。             可指定多个包，包与包之间用逗号或分号分隔-->            <property name="basePackage" value="com.iotek.dao" />            <property name="annotationClass" value="org.springframework.stereotype.Repository" />        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>        </bean>                           </beans>

Mybatis事务处理

<?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:mvc="http://www.springframework.org/schema/mvc"        xsi:schemaLocation="http://www.springframework.org/schema/beans                              http://www.springframework.org/schema/beans/spring-beans-3.1.xsd                              http://www.springframework.org/schema/context                              http://www.springframework.org/schema/context/spring-context-3.1.xsd                              http://www.springframework.org/schema/mvc                              http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">        <!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->        <bean id="transactionManager"            class="org.springframework.jdbc.datasource.DataSourceTransactionManager">            <property name="dataSource" ref="dataSource" />        </bean>    </beans>

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:p="http://www.springframework.org/schema/p"        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-3.1.xsd                              http://www.springframework.org/schema/context                              http://www.springframework.org/schema/context/spring-context-3.1.xsd                              http://www.springframework.org/schema/mvc                              http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">        <!-- 使用注解式注入 -->        <context:annotation-config />        <!-- 自动扫描 -->        <context:component-scan base-package="com.iotek" />        <!-- 导入DAO配置 -->        <import resource="spring-dao.xml"/>        <!-- 导入数据库配置 -->        <import resource="spring-db.xml"/>        <!-- 导入数据库配置 -->        <import resource="spring-tx.xml"/>    </beans>

控制层代码

package com.iotek.controller;import javax.annotation.Resource;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import com.iotek.enity.Admin;import com.iotek.service.AdminService;@Controllerpublic class AdminController {    @Resource    private AdminService adminService;    @RequestMapping("/regist")    public String regist(String adminName,String adminPass){        Admin admin = new Admin();        admin.setAdminName(adminName);        admin.setAdminPass(adminPass);        adminService.addAdmin(admin);        return "success";    }}

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