我是阿福，公众号「阿福聊编程」作者，一个在后端技术路上摸盘滚打的程序员，在进阶的路上，共勉！
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本文是基于Maven工程实现SSM整合，主要是通过XML实现三大框架的整合，可能有的小伙伴会说XML早就过时了，现在人们都使用注解开发，但是不是这么认为，我个人觉得你XML 整合会了，注解能不会吗？ 开干！！！！
SSM整合总体思路
Spring和MyBatis整合
整合JAR包
<dependencies>
<!-- Spring依赖 -->
<!-- https://mvnrepository.com/artifact/org.springframework/spring-orm -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>4.3.2.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>4.3.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>4.3.2.RELEASE</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.aspectj/aspectjweaver -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.9.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/cglib/cglib -->
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib</artifactId>
<version>2.2</version>
</dependency>
<!-- MySQL驱动 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-Java</artifactId>
<version>5.1.3</version>
</dependency>
<!-- 数据源 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.0.31</version>
</dependency>
<!-- MyBatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.2.8</version>
</dependency>
<!-- MyBatis与Spring整合 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.2.2</version>
</dependency>
<!-- 日志 -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.7</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.7</version>
</dependency>
<!-- Spring进行JSON数据转换依赖 -->
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.9.2</version>
</dependency>
<!-- JSTL标签库 -->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- junit测试 -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<!-- 引入Servlet容器中相关依赖 -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<!-- JSP页面使用的依赖 -->
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.1.3-b06</version>
<scope>provided</scope>
</dependency>
</dependencies>
创建Spring的配置文件
- spring-persist-mybatis.xml ---数据源相关的配置
- spring-persist-tx.xml ---事务相关的配置
- spring-web-mvc.xml ---SpringMvc相关的配资
创建jdbc.properties
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3307/crowdfunding?useUnicode=true&characterEncoding=utf8
jdbc.username=root
jdbc.password=123456
创建log4j.properties
log4j.rootLogger=DEBUG,myConsole
log4j.appender.myConsole=org.apache.log4j.ConsoleAppender
log4j.appender.myConsole.Target=System.out
log4j.appender.myConsole.layout=org.apache.log4j.PatternLayout
log4j.appender.myConsole.layout.ConversionPattern=[%-5p] %d(%r) --> [%t] %l: %m %x %n
配置数据源
在配置文件spring-persist-mybatis.xml，分为两步：加载外部的属性文件，配置数据源
<!--加载外部的属性文件-->
<context:property-placeholder location="classpath:db.properties"></context:property-placeholder>
<!--配置数据源-->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
<property name="username" value="${jdbc.username}"></property>
<property name="password" value="${jdbc.password}"></property>
<property name="url" value="${jdbc.url}"></property>
<property name="driverClassName" value="${jdbc.driver}"></property>
</bean>
数据源测试类
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations= {"classpath:/spring/spring-persist-mybatis.xml"})
public class AtcrowFundingAdminTest {
@Autowired
public DataSource dataSource;
@Test
public void DataSourceTest() throws Exception{
System.out.println("数据源："+dataSource.getConnection());
}
}
创建MyBatis全局配置文件
配置 mybatis-config.xml
<?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>
<!-- 配置全局属性 -->
<settings>
<!-- 使用jdbc的getGeneratedKeys获取数据库自增主键值 -->
<setting name="useGeneratedKeys" value="true" />
<!-- 开启驼峰命名转换:Table{create_time} -> Entity{createTime} -->
<setting name="mapUnderscoreToCamelCase" value="true" />
</settings>
</configuration>
配置SqlSessionFactoryBean
在配置文件：spring-persist-mybatis.xml，分为两步：配置SqlSessionFactoryBean，配置mybatis 的包扫描器
<!--配置SqlSessionFactoryBean-->
<bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
<!--装配数据源-->
<property name="dataSource" ref="dataSource"></property>
<!--mybatis配置文件所在的位置-->
<property name="configLocation" value="classpath:/mybatis/mybatis-config.xml"></property>
<!--配置mapper所在的文件位置-->
<property name="mapperLocations" value="classpath:/mybatis/mapper/*Mapper.xml"></property>
</bean>
<!--配置mybatis 的包扫描器-->
<bean id="mapperScannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!--配置mapper所在的包-->
<property name="basePackage" value="com.zfcoding.dao"></property>
</bean>
到这里spring-persist-mybatis.xml配置文件已经完成了。
完整的文件
<?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"
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-4.0.xsd ">
<!--注册组件包扫描，把类上标注了@Controller @Service @Repository @Component 都会自动加入到Spring容器中-->
<context:component-scan base-package="com.zfcoding"></context:component-scan>
<!--加载外部的属性文件-->
<context:property-placeholder location="classpath:db.properties"></context:property-placeholder>
<!--配置数据源-->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
<property name="username" value="${jdbc.username}"></property>
<property name="password" value="${jdbc.password}"></property>
<property name="url" value="${jdbc.url}"></property>
<property name="driverClassName" value="${jdbc.driver}"></property>
</bean>
<!--配置SqlSessionFactoryBean-->
<bean id="sqlSessionFactoryBean" class="org.mybatis.spring.SqlSessionFactoryBean">
<!--装配数据源-->
<property name="dataSource" ref="dataSource"></property>
<!--mybatis配置文件所在的位置-->
<property name="configLocation" value="classpath:/mybatis/mybatis-config.xml"></property>
<!--配置mapper所在的文件位置-->
<property name="mapperLocations" value="classpath:/mybatis/mapper/*Mapper.xml"></property>
</bean>
<!--配置mybatis 的包扫描器-->
<bean id="mapperScannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!--配置mapper所在的包-->
<property name="basePackage" value="com.zfcoding.dao"></property>
</bean>
</beans>
配置声明式事务
所在配置文件：spring-persist-tx.xml
- 配置事务管理器
- 配置事务通知
- 配置事务切面
<?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/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">
<!--配置事务管理器-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>
<!-- 配置事务通知 -->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
<!-- 配置事务属性 -->
<tx:attributes>
<!-- 将查询方法设置为只读 -->
<tx:method name="get*" read-only="true"/>
<tx:method name="query*" read-only="true"/>
<tx:method name="find*" read-only="true"/>
<tx:method name="count*" read-only="true"/>
<!-- 给增删改方法设置属性 -->
<!-- propagation：配置传播行为，REQUIRES_NEW表示必须工作在自己新开的事务中，不受其他事务回滚影响 -->
<!-- rollback-for：配置回滚的异常，默认是根据运行时异常回滚，为了抛出编译时异常也回滚，设置为java.lang.Exception -->
<tx:method name="save*" propagation="REQUIRES_NEW" rollback-for="java.lang.Exception"/>
<tx:method name="remove*" propagation="REQUIRES_NEW" rollback-for="java.lang.Exception"/>
<tx:method name="update*" propagation="REQUIRES_NEW" rollback-for="java.lang.Exception"/>
</tx:attributes>
</tx:advice>
<!-- 配置事务切面 -->
<aop:config>
<!-- 切入点表达式 -->
<aop:pointcut id="txPointCut" expression="execution (* com.zfcoding.service..*.*(..))"/>
<!-- 将事务通知和切入点表达式关联起来 -->
<aop:advisor advice-ref="txAdvice" pointcut-ref="txPointCut"></aop:advisor>
</aop:config>
</beans>
SpringMVC
配置spring-web-mvc.xml
开启注解驱动，配置视图解析器
<?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: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.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd ">
<!--开启注解驱动-->
<mvc:annotation-driven/>
<!-- 配置视图解析器 -->
<bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/"/>
<property name="suffix" value=".jsp"/>
</bean>
<context:component-scan base-package="com.zfcoding.controller"></context:component-scan>
</beans>
配置web.xml
配置监听器（contextConfigLocation）加载spring-persist-mybatis.xml,spring-persist-tx.xml配置文件，
配置DispatchServlet加载spring-web-mvc.xml配置文件
配置过滤器编码的格式
这些文件在项目启动的时候加载到Sping容器当中。
<?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"
version="2.5">
<!--配置监听器-->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!--项目启动加载spring的配置文件-->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath*:/spring/spring-persist-*.xml</param-value>
</context-param>
<!--配置DispatchServlet-->
<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*:spring/spring-web-mvc.xml</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>dispatcherServlet</servlet-name>
<url-pattern>*.action</url-pattern>
</servlet-mapping>
<!--配置过滤器-->
<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>
<init-param>
<param-name>forceRequestEncoding</param-name>
<param-value>true</param-value>
</init-param>
<init-param>
<param-name>forceResponseEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
创建Controller类测试
@Controller
@RequestMapping("admin")
public class AdminController {
@Autowired
public AdminService adminService;
@RequestMapping("/findall")
public String findAll(Model model) {
List<AdminBean> list = adminService.findAllAdmin();
model.addAttribute("list", list);
return "admin";
}
}
请求路径：http://localhost:8080/ssm_war_exploded/admin/findall.action
页面响应
AdminBean{id=1, loginAcct='admin', userPswd='123', userName='你好', email='', createTime='null'}
到此SSM 基本功能的整合已经完成了。
