SSM三大框架整合

Spring+SpringMVC+MyBatis ，利用Spring整合SpringMVC和MyBatis 。

1. 创建数据库和表结构

SQL语句

2. 创建maven工程

引入坐标依赖

1. 创建ssm_parent父工程（打包方式选择pom，必须的）
2. 创建ssm_web子模块（打包方式是war包）
3. 创建ssm_service子模块（打包方式是jar包）
4. 创建ssm_dao子模块（打包方式是jar包）
5. 创建ssm_domain子模块（打包方式是jar包）
6. web依赖于service，service依赖于dao，dao依赖于domain
7. 在ssm_parent的pom.xml文件中引入坐标依赖

<dependencies>
  <dependency>
    <groupId>org.aspectj</groupId>
    <artifactId>aspectjweaver</artifactId>
    <version>1.9.4</version>
  </dependency>
  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-context</artifactId>
    <version>${spring.version}</version>
  </dependency>
  <dependency>
    <groupId>commons-logging</groupId>
    <artifactId>commons-logging</artifactId>
    <version>1.2</version>
  </dependency>
  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-web</artifactId>
    <version>${spring.version}</version>
  </dependency>
  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webmvc</artifactId>
    <version>${spring.version}</version>
  </dependency>
  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-aop</artifactId>
    <version>${spring.version}</version>
  </dependency>
  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-test</artifactId>
    <version>${spring.version}</version>
  </dependency>
  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-tx</artifactId>
    <version>${spring.version}</version>
  </dependency>
  <dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-jdbc</artifactId>
    <version>${spring.version}</version>
  </dependency>
  <dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.12</version>
    <scope>test</scope>
  </dependency>
  <dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>8.0.15</version>
  </dependency>
  <dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>javax.servlet-api</artifactId>
    <version>4.0.1</version>
    <scope>provided</scope>
  </dependency>
    <dependency>
        <groupId>javax.servlet.jsp</groupId>
        <artifactId>jsp-api</artifactId>
        <version>2.2</version>
        <scope>provided</scope>
    </dependency>
  <dependency>
    <groupId>javax.servlet.jsp.jstl</groupId>
    <artifactId>jstl-api</artifactId>
    <version>1.2</version>
  </dependency>
  <dependency>
    <groupId>org.apache.logging.log4j</groupId>
    <artifactId>log4j-core</artifactId>
    <version>2.12.1</version>
  </dependency>
  <dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-api</artifactId>
    <version>1.7.30</version>
  </dependency>
  <dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis</artifactId>
    <version>3.5.3</version>
  </dependency>
  <dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis-spring</artifactId>
    <version>2.0.3</version>
  </dependency>
  <dependency>
    <groupId>com.mchange</groupId>
    <artifactId>c3p0</artifactId>
    <version>0.9.5.5</version>
  </dependency>
</dependencies>

3. 创建对应的目录结构

4. 配置Spring

编写Spring配置文件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: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/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">

    <!--开启注解扫描  希望处理service和dao，但是controller不需要Spring框架去处理-->
    <context:component-scan base-package="com.ligangit">
        <!--配置controller不扫描-->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>
</beans>

将AccountServiceImpl.java添加到容器，测试

@Service(value = "accountService")
public class AccountServiceImpl implements AccountService {
    @Override
    public List<Account> findAll() {
        System.out.println("service层，查询所有账户。。。");
        return null;
    }
    @Override
    public void saveAccount(Account account) {
        System.out.println("service层，保存账户信息。。。");

    }
}

测试

//    测试Spring框架
    @Test
    public void testSpring1(){
    // 加载配置文件
    ApplicationContext applicationContext =
        new ClassPathXmlApplicationContext("classpath:applicationContext.xml");
    // 获取对象
    AccountService accountService = (AccountService) applicationContext.getBean("accountService");
    // 调用方法
    accountService.findAll();
    }

5. 配置SpringMVC

1. 在web.xml中配置前端控制器DispatcherServlet

   <!--配置前端控制器-->
   <servlet>
     <servlet-name>dispatcherServlet</servlet-name>
     <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
     <!--设置配置文件路径-->
     <init-param>
       <param-name>contextConfigLocation</param-name>
       <param-value>classpath:springmvc.xml</param-value>
     </init-param>
     <!--设置项目启动时DispatcherServlet加载一次-->
     <load-on-startup>1</load-on-startup>
   </servlet>
   <servlet-mapping>
     <servlet-name>dispatcherServlet</servlet-name>
       <!--表示任意请求都会经过servlet-->
     <url-pattern>/</url-pattern>
   </servlet-mapping>

2. 在web.xml中配置过滤器解决中文乱码

   <!--配置解决中文乱码的过滤器-->
   <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>
   </filter>
   <filter-mapping>
     <filter-name>characterEncodingFilter</filter-name>
     <url-pattern>/*</url-pattern>
   </filter-mapping>

3. 编写Springmvc的配置文件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:mvc="http://www.springframework.org/schema/mvc"
          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/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
                               http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
   
       <!--开启注解扫描-->
       <context:component-scan base-package="com.ligangit"/>
       <!--视图解析器-->
       <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
           <property name="prefix" value="/WEB-INF/pages/"/>
           <property name="suffix" value=".jsp"/>
       </bean>
   
       <!--配置文件解析器 id值必须是multipartResolver  -->
       <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
           <!--设置上传文件最大10M，即10*1024*1024=10485760-->
           <property name="maxUploadSize" value="10485760"/>
       </bean>
   
       <!--前端控制器，哪些静态资源不拦截-->
       <mvc:resources mapping="/js/**" location="/js/"></mvc:resources>
       <mvc:resources mapping="/css/**" location="/css/"></mvc:resources>
   
       <!--开启SpringMVC框架注解支持-->
       <mvc:annotation-driven conversion-service="conversionService"/>
   </beans>

4. 测试SpringMVC的框架是否搭建成功

   1. 编写index.jsp和list.jsp，编写超链接

      <a href="account/findAll">测试SpringMVC</a>

   2. 创建AccountController类，编写方法，进行测试

      @Controller
      @RequestMapping("/account")
      public class AccountController {
          @RequestMapping("/findAll")
          public String findAll(){
          System.out.println("Controller查询所有账户...");
          return "list";
          }
      }

6. Spring整合SpringMVC框架

1. 目的：在Controller中能成功的调用Service对象中的方法。

2. 在项目启动的时候，就去加载Spring的配置文件applicationContext.xml，在web.xml中配置ContextLoaderListener监听器（该监听器只能加载WEB-INF目录下的applicationContext.xml配置文件）

   <!--配置Spring的监听器 默认只加载WEB-INF目录下的applicationContext.xml配置文件-->
   <listener>
     <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
   </listener>
   <!--设置配置文件的路径-->
   <context-param>
     <param-name>contextConfigLocation</param-name>
     <param-value>classpath:applicationContext.xml</param-value>
   </context-param>

7. 配置Mybatis

1. 编写dao层的SQL

   public interface AccountDao {
   //    查询所有账户
       @Select("select * from account")
       public List<Account> findAll();
   //    保存账户信息
       @Insert("insert into account (name,money) values (#{name},#{money})")
       public void saveAccount(Account account);
   }

2. 在web项目中编写MyBatis配置文件mybatis-config.xml，characterEncoding设置编码格式

   <?xml version="1.0" encoding="UTF-8"?>
   <!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD SQL Map Config 3.0//EN"  
   	"http://mybatis.org/dtd/mybatis-3-config.dtd">
   <configuration>
   	<!--配置环境-->
   	<environments default="mysql">
   		<environment id="mysql">
   			<transactionManager type="JDBC"></transactionManager>
   			<dataSource type="POOLED">
   				<property name="url" value="jdbc:mysql:///ssm?characterEncoding=utf8" />
   				<property name="username" value="root" />
   				<property name="password" value="123456" />
   				<property name="driver" value="com.mysql.jdbc.Driver" />
   			</dataSource>
   		</environment>
   	</environments>
   
   	<!--引入映射配置文件-->
   	<mappers>
   		<!--<mapper class="com.ligangit.dao.AccountDao"/>-->
   		<package name="com.ligangit.dao"/>
   	</mappers>
   	
   </configuration>

3. 测试

   注意：添加、修改、删除操作需要提交事务

   /**
    * 测试查询
    */
   @Test
   public void testMybatis() throws IOException {
       //加载配置文件
       InputStream inputStream = Resources.getResourceAsStream("mybatis/mybatis-config.xml");
   // 创建SqlSessionFactory对象
       SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
       //创建SqlSession对象
       SqlSession sqlSession = sqlSessionFactory.openSession();
   // 获取到代理对象
       AccountDao accountDao = sqlSession.getMapper(AccountDao.class);
       //查询所有数据
       List<Account> accountList = accountDao.findAll();
       for (Account account:accountList){
     System.out.println(account);
       }
       //关闭资源
       sqlSession.close();
       inputStream.close();
   }
   /**
    * 测试保存
    */
   @Test
   public void testMybatis2() throws IOException {
       Account account=new Account();
       account.setName("小白");
       account.setMoney(400d);
       //加载配置文件
       InputStream inputStream = Resources.getResourceAsStream("mybatis/mybatis-config.xml");
       // 创建SqlSessionFactory对象
       SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
       //创建SqlSession对象
       SqlSession sqlSession = sqlSessionFactory.openSession();
       // 获取到代理对象
       AccountDao accountDao = sqlSession.getMapper(AccountDao.class);
       //保存
       accountDao.saveAccount(account);
       //提交事务
       sqlSession.commit();
       //关闭资源
       sqlSession.close();
       inputStream.close();
   }

4. 结果

   

8. Spring整合Mybatis框架

在Spring配置文件applicationContext.xml中配置Mybatis

<!--Spring整合Mybatis框架-->
<!--配置连接池-->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
    <property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
    <property name="url" value="jdbc:mysql://localhost:3306/ssm?characterEncoding=utf8"></property>
    <property name="username" value="root"></property>
    <property name="password" value="123456"></property>
</bean>
<!--配置SqlSessionFactory工厂-->
<bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
    <property name="dataSource" ref="dataSource"/>
</bean>
<!--配置AccountDao接口所在包-->
<bean id="mapperScannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
    <property name="basePackage" value="com.ligangit.dao"/>
</bean>

将dao注入容器

@Repository
public interface AccountDao {

service层调用dao

@Service(value = "accountService")
public class AccountServiceImpl implements AccountService {
    @Autowired
    private AccountDao accountDao;
    @Override
    public List<Account> findAll() {
        System.out.println("service层，查询所有账户。。。");
        return accountDao.findAll();
    }
    @Override
    public void saveAccount(Account account) {
        System.out.println("service层，保存账户信息。。。");
        accountDao.saveAccount(account);
    }
}

MyBatis配置文件mybatis-config.xml可以删除了

9. Spring整合Mybatis框架配置事务

配置Spring框架声明式事务管理,用于添加、修改、删除操作提交。

在Spring配置文件applicationContext.xml中配置声明式事务管理。

<!--配置Spring框架声明式事务管理,用于添加、修改、删除操作提交-->
<!--配置事务管理器-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
    <property name="dataSource" ref="dataSource"/>
</bean>
<!--配置事务通知-->
<tx:advice id="txAdvice" transaction-manager="transactionManager">
    <tx:attributes>
        <tx:method name="find*" read-only="true"/>
        <tx:method name="*" isolation="DEFAULT"/>
    </tx:attributes>
</tx:advice>
<!--配置AOP增强-->
<aop:config>
    <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.ligangit.service.impl.*ServiceImpl.*(..))"/>
</aop:config>

测试：

​ jsp页面：

<a href="account/findAll">测试SpringMVC</a>
<br>
<br>
<form action="account/saveAccount" method="post">
    姓名：<input type="text" name="name" /></br>
    金额：<input type="text" name="money" /></br>
    <input type="submit" value="提交">
</form>

​ 控制器代码：

@Controller
@RequestMapping("/account")
public class AccountController {
    @Autowired
    AccountService accountService;
    /**
     * 查询所有账户
     */
    @RequestMapping("/findAll")
    public String findAll(Model model){
    System.out.println("Controller查询所有账户...");
    // 调用service的方法
    List<Account> accountList = accountService.findAll();
    model.addAttribute("list", accountList);
        return "list";
    }

    /**
     * 保存账户
     */
    @RequestMapping("/saveAccount")
    public void saveAccount(Account account, HttpServletRequest request, HttpServletResponse response) throws IOException {
        System.out.println("Controller保存账户...");
        // 调用service的方法
        accountService.saveAccount(account);
        response.sendRedirect(request.getContextPath()+"/account/findAll");
        return;
    }
}

最后更新： 2020年07月13日 23:02

原始链接： http://ligangit.com/2020/07/12/SSM三大框架整合/

Li Gang

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