SSM整合

持久层业务层表现层加载/实例化父子容器测试总结

持久层

配置pom.xml <!-- 持久层依赖 开始 --> <!-- spring ioc组件需要的依赖包 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>5.0.7.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>5.0.7.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>5.0.7.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-expression</artifactId> <version>5.0.7.RELEASE</version> </dependency> <!-- spring 事务管理和JDBC依赖包 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>5.0.7.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>5.0.7.RELEASE</version> </dependency> <!-- mysql数据库驱动包 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.35</version> </dependency> <!-- dbcp连接池的依赖包 --> <dependency> <groupId>commons-dbcp</groupId> <artifactId>commons-dbcp</artifactId> <version>1.4</version> </dependency> <!-- mybatis依赖 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.4.5</version> </dependency> <!-- mybatis和spring的整合依赖 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.3.1</version> </dependency> <!-- 持久层依赖 结束 --> 通过逆向工程生成pojo类和mapper文件和代理接口文件 搭建一个逆向工程，配置pom.xml <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.yalong</groupId> <artifactId>MybatisGenerator</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>MybatisGenerator</name> <url>http://maven.apache.org</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> </properties> <dependencies> <!-- 单元测试Junit --> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> </dependency> <!-- mybatis依赖 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.4.5</version> </dependency> <!-- mysql数据库驱动包 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.35</version> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.17</version> </dependency> <dependency> <groupId>org.mybatis.generator</groupId> <artifactId>mybatis-generator-core</artifactId> <version>1.3.5</version> </dependency> </dependencies> </project> 配置生成文件的java文件 package com.yalong; import java.io.File; import java.util.ArrayList; import java.util.List; import org.mybatis.generator.api.MyBatisGenerator; import org.mybatis.generator.config.xml.ConfigurationParser; import org.mybatis.generator.internal.DefaultShellCallback; public class Generator { public static void main(String[] args) throws Exception { List<String> warnings = new ArrayList<String>(); boolean overwrite = true;//加载上面的配置文件 File configFile = new File("./src/resources/generatorconfig.xml"); ConfigurationParser cp = new ConfigurationParser(warnings); org.mybatis.generator.config.Configuration config = cp.parseConfiguration(configFile); DefaultShellCallback callback = new DefaultShellCallback(overwrite); MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config, callback, warnings); myBatisGenerator.generate(null); } }

运行Generator.java生成po类和代理接口类，目录结构如下：

配置加载applicationContext-dao.xml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:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" 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/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd"> <!-- 读取java配置文件，替换占位符数据 --> <context:property-placeholder location="classpath:db.properties" /> <!-- 配置DataSource数据源 --> <!-- 常用的DataSource：Druid --> <!-- 注意事项：destroy-method需要加上 --> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"> <property name="driverClassName" value="${db.driverClassName}" /> <property name="url" value="${db.url}" /> <property name="username" value="${db.username}" /> <property name="password" value="${db.password}" /> </bean> <!-- 配置SqlSessionFactory --> <!-- SqlSessionFactory对象的创建，需要依赖于Mybatis的全局配置文件（数据源、别名、映射文件的读取） --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <!-- 注入dataSource --> <property name="dataSource" ref="dataSource"></property> <!-- <property name="configLocation" value="dataSource"></property> --> <!-- mybatis批量别名配置 --> <property name="typeAliasesPackage" value="com.yalong.po"></property> </bean> <!-- 批量Mapper代理对象的生成 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!-- 指定需要生成代理的接口所在的包名 --> <property name="basePackage" value="com.yalong.mapper"></property> <!-- <property name="sqlSessionFactory" ref="sqlSessionFactory"></property> --> <!-- <property name="sqlSessionFactoryBeanName" --> <!-- value="sqlSessionFactory"></property> --> </bean> </beans>

db.properties文件：

db.driverClassName=com.mysql.jdbc.Driver db.url=jdbc:mysql:///mybatis db.username=root db.password=yalong

业务层

配置pom.xml <!-- 业务层依赖 开始 --> <!-- 基于AspectJ的aop依赖 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aspects</artifactId> <version>5.0.7.RELEASE</version> </dependency> <dependency> <groupId>aopalliance</groupId> <artifactId>aopalliance</artifactId> <version>1.0</version> </dependency> <!-- 业务层依赖 结束 --> 编写业务接口和实现类 package com.yalong.service; import com.yalong.po.User;; public interface UserService { User queryUserById(Integer id); } package com.yalong.service; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import com.yalong.mapper.UserMapper; import com.yalong.po.User; @Service public class UserServiceImpl implements UserService { @Autowired private UserMapper mapper; @Override public User queryUserById(Integer id) { return id == null ? null : mapper.selectByPrimaryKey(id); } } 配置加载applicationContext-service.xml和applicationContext-tx.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:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" 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/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd"> <!-- 扫描业务bean --> <context:component-scan base-package="com.yalong.service"></context:component-scan> </beans> <?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:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" 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/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd"> <!-- 配置平台事务管理器 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"></property> </bean> <!-- 事务通知 --> <!-- tx:advice：对应的处理器类就是TransactionInterceptor类（实现了MethodInterceptor） --> <!-- TransactionInterceptor类实现事务是通过transaction-manager属性指定的值进行事务管理 --> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <!-- 设置事务管理信息 --> <tx:attributes> <!-- 增删改使用REQUIRED事务传播行为 --> <!-- 查询使用read-only --> <tx:method name="save*" propagation="REQUIRED"/> <tx:method name="insert*" propagation="REQUIRED"/> <tx:method name="add*" propagation="REQUIRED"/> <tx:method name="create*" propagation="REQUIRED"/> <tx:method name="delete*" propagation="REQUIRED"/> <tx:method name="remove*" propagation="REQUIRED"/> <tx:method name="del*" propagation="REQUIRED"/> <tx:method name="update*" propagation="REQUIRED"/> <tx:method name="modify*" propagation="REQUIRED"/> <tx:method name="edit*" propagation="REQUIRED"/> <tx:method name="query*" read-only="true"/> <tx:method name="find*" read-only="true"/> <tx:method name="select*" read-only="true"/> </tx:attributes> </tx:advice> <!-- 基于AspectJ + XML方式实现声明式事务 --> <aop:config> <!-- aop:advisor标签使用的是传统spring aop开发方式实现的 --> <!-- spring已经实现了该增强功能，spring使用的是实现MethodInterceptor接口的方式实现的 --> <aop:advisor advice-ref="txAdvice" pointcut="execution(* *..*.*ServiceImpl.*(..))" /> </aop:config> </beans>

表现层

配置pom.xml <!-- 表现层依赖 开始 --> <!-- spring MVC依赖包 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>5.0.7.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>5.0.7.RELEASE</version> </dependency> <!-- jstl 取决于视图对象是否是JSP --> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <!-- servlet --> <!-- <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>2.5</version> <scope>provided</scope> </dependency> --> <dependency> <groupId>javax.servlet</groupId> <artifactId>javax.servlet-api</artifactId> <version>3.1.0</version> <scope>provided</scope> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> <version>5.0.7.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-oxm</artifactId> <version>5.0.7.RELEASE</version> </dependency> <dependency> <groupId>com.thoughtworks.xstream</groupId> <artifactId>xstream</artifactId> <version>1.4.10</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.9.6</version> </dependency> <!-- 表现层依赖 结束 --> <!-- spring 单元测试组件包 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>5.0.7.RELEASE</version> </dependency> <!-- 单元测试Junit --> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> </dependency> <!-- Mock测试使用的json-path依赖 --> <dependency> <groupId>com.jayway.jsonpath</groupId> <artifactId>json-path</artifactId> <version>2.2.0</version> </dependency> <!-- 文件上传 --> <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>1.3.1</version> </dependency> 编写Controller类 package com.yalong.controller; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.PathVariable; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; import com.yalong.po.User; import com.yalong.service.UserService; @Controller @RequestMapping("user") public class UserController { @Autowired private UserService userService; @RequestMapping("{id}") @ResponseBody public User findUser(@PathVariable Integer id) { return userService.queryUserById(id); } } 加载配置springmvc.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:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" 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/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd"> <!-- 处理器类的扫描 --> <context:component-scan base-package="com.yalong.controller" /> <!-- 配置注解的适配器和映射器，同时还注入了很多其他的bean --> <!-- 处理器适配器会去调用conversion-service --> <mvc:annotation-driven/> <!-- 显式的配置视图解析器 --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/jsp/"></property> <property name="suffix" value=".jsp"></property> </bean> </beans>

加载/实例化父子容器

配置web.xml <?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"> <!-- 配置前端控制器加载spring子容器 --> <servlet> <servlet-name>ssm</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring/springmvc.xml</param-value> </init-param> <load-on-startup>2</load-on-startup> </servlet> <servlet-mapping> <servlet-name>ssm</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!-- 配置ContextLoaderListener监听器加载spring父容器 --> <context-param> <param-name>contextConfigLocation</param-name> <!-- 方式1 <param-value> classpath:spring/applicationContext-dao.xml, classpath:spring/applicationContext-service.xml, classpath:spring/applicationContext-tx.xml </param-value> --> <!-- 方式2 <param-value> classpath:spring/import.xml </param-value> --> <!-- 方式3 --> <param-value> classpath:spring/applicationContext-*.xml </param-value> </context-param> <!-- Spring上下文加载监听器 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- POST乱码过滤器 --> <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> <init-param> <param-name>forceEncoding</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>

测试总结

部署项目，http访问如下： 说明ssm整合成功！