14-SSM整合

今日知识

1. Spring整合MyBatis
2. SSM普通整合
3. SSM整合（Spring和SpringMVC分离）
4. 纯JavaConfig的SSM

Spring整合MyBatis

1. 导包

<properties>
    <spring.version>5.1.8.RELEASE</spring.version> </properties> <dependencies> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.2.6</version> </dependency> <!--mybatis的spring支持包--> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.2.2</version> </dependency> <!--连接数据库的四个包--> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>8.0.16</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>commons-dbcp</groupId> <artifactId>commons-dbcp</artifactId> <version>1.2.2</version> </dependency> <!--test--> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${spring.version}</version> </dependency> </dependencies>

2. 创建UserMapper接口

public interface UserMapper {
    public User selectByPrimaryKey(int id);
}

3. 创建UserService接口

public interface UserService {
    public User selectByPrimaryKey(int id);
}

4. 创建UserMapperImpl实现类

@Component
public class UserServiceImpl implements UserService { @Autowired UserMapper userMapper; public User selectByPrimaryKey(int id) { return userMapper.selectByPrimaryKey(id); } }

5. UserMapper.xml创建

<mapper namespace="com.rqy.mapper.UserMapper">
<resultMap id="BaseResultMap" type="com.rqy.domain.User">
<id column="id" jdbcType="INTEGER" property="id" /> <result column="username" jdbcType="VARCHAR" property="username" /> <result column="birthday" jdbcType="DATE" property="birthday" /> <result column="sex" jdbcType="CHAR" property="sex" /> <result column="address" jdbcType="VARCHAR" property="address" /> /resultMap> <select id="selectByPrimaryKey" parameterType="java.lang.Integer" resultMap="BaseResultMap"> select * from user where id = #{id,jdbcType=INTEGER} </select> </mapper>

6. application.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:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation=" http://www.springframework.org/schema/beans https://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/mvc https://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/aop https://www.springframework.org/schema/aop/spring-aop.xsd"> <context:component-scan base-package="com.rqy"/> <!--<mvc:annotation-driven/>--> <!--数据源--> <bean id="datasource" class="org.apache.commons.dbcp.BasicDataSource"> <property name="driverClassName" value="com.mysql.jdbc.Driver"/> <property name="url" value="jdbc:mysql://localhost:3306/mybatisday01?serverTimezone=UTC"/> <property name="username" value="root"/> <property name="password" value="123456"/> </bean> <!--1.1.2 配置sqlSessionFactory--> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="datasource"/> <!--<property name="configLocation" value="classpath:SqlMapConfig.xml"/>--> </bean> <!--MapperFactoryBean,缺点每个mapper接口都要注册进来--> <!--<bean id="userMapper" class="org.mybatis.spring.mapper.MapperFactoryBean"> <property name="mapperInterface" value="com.rqy.mapper.UserMapper"/> &lt;!&ndash;sqlSessionFactory注入到mapper中，代替mapper实现类&ndash;&gt; <property name="sqlSessionFactory" ref="sqlSessionFactory"/> </bean>--> <!--把整个mapper接口所在的包都注册进来--> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!--扫描包，取代了SqlMapConfig.xml mapper映射文件--> <property name="basePackage" value="com.rqy.mapper"/> <!--与上面不太一样--> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/> </bean> </beans>

7. 测试

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:application.xml")
public class MyTest { @Autowired UserService userService; @Test public void test(){ User user = userService.selectByPrimaryKey(35); System.out.println(user); } }

SSM普通整合

1. 导包（数据源的包采用的druid的，你也可以采用其他的额）

<properties>
    <spring.version>5.1.8.RELEASE</spring.version> </properties> <dependencies> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>3.0-alpha-1</version> <scope>provided</scope> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.2.6</version> </dependency> <!--mybatis的spring支持包--> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.2.2</version> </dependency> <!--连接数据库--> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>8.0.16</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>${spring.version}</version> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.1.11</version> </dependency> <!--test--> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${spring.version}</version> </dependency> <!--jackson--> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.9.7</version> </dependency> </dependencies>

2. 创建UserMapper接口

public interface UserMapper {
    public User selectByPrimaryKey(int id);
}

3. 创建UserService接口

public interface UserService {
    public User selectByPrimaryKey(int id);
}

4. 创建UserMapperImpl实现类

@Component
public class UserServiceImpl implements UserService { @Autowired UserMapper userMapper; public User selectByPrimaryKey(int id) { return userMapper.selectByPrimaryKey(id); } }

5. UserMapper.xml创建

<mapper namespace="com.rqy.mapper.UserMapper">
<resultMap id="BaseResultMap" type="com.rqy.domain.User">
<id column="id" jdbcType="INTEGER" property="id" /> <result column="username" jdbcType="VARCHAR" property="username" /> <result column="birthday" jdbcType="DATE" property="birthday" /> <result column="sex" jdbcType="CHAR" property="sex" /> <result column="address" jdbcType="VARCHAR" property="address" /> /resultMap> <select id="selectByPrimaryKey" parameterType="java.lang.Integer" resultMap="BaseResultMap"> select * from user where id = #{id,jdbcType=INTEGER} </select> </mapper>

6. application.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" 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-3.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd"> <context:component-scan base-package="com.rqy"/> <mvc:annotation-driven/> <!--数据源--> <bean id="datasource" class="com.alibaba.druid.pool.DruidDataSource"> <property name="driverClassName" value="com.mysql.jdbc.Driver"/> <property name="url" value="jdbc:mysql://localhost:3306/mybatisday01?serverTimezone=UTC"/> <property name="username" value="root"/> <property name="password" value="123456"/> </bean> <!--1.1.2 配置sqlSessionFactory--> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="datasource"/> </bean> <!--把整个mapper接口所在的包都注册进来--> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!--扫描包，取代了SqlMapConfig.xml mapper映射文件--> <property name="basePackage" value="com.rqy.mapper"/> <!--与上面不太一样--> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/> </bean> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/views/"/> <property name="suffix" value=".jsp"/> </bean> </beans>

7. Web.xml

<servlet>
    <servlet-name>dispatcher</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:application.xml</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>dispatcher</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping>

8. UserController.java

@Controller
public class UserController { @Autowired UserService userService; @RequestMapping("user") public @ResponseBody User query(int id){ User user = userService.selectByPrimaryKey(id); System.out.println(user); return user; } }

SSM整合（Spring和SpringMVC分离）

1. 导包（和上面一样）

2. 创建UserMapper接口（和上面一样）

3. 创建UserService接口（和上面一样）

4. 创建UserMapperImpl实现类（和上面一样）

5. UserMapper.xml创建（和上面一样）

6. application.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" 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-3.2.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd"> <context:component-scan base-package="com.rqy"> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/> </context:component-scan> <!--数据源--> <bean id="datasource" class="com.alibaba.druid.pool.DruidDataSource"> <property name="driverClassName" value="com.mysql.jdbc.Driver"/> <property name="url" value="jdbc:mysql://localhost:3306/mybatisday01?serverTimezone=UTC"/> <property name="username" value="root"/> <property name="password" value="123456"/> </bean> <!--1.1.2 配置sqlSessionFactory--> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="datasource"/> </bean> <!--把整个mapper接口所在的包都注册进来--> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!--扫描包，取代了SqlMapConfig.xml mapper映射文件--> <property name="basePackage" value="com.rqy.mapper"/> <!--与上面不太一样--> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/> </bean> <!--测试的bean，项目初始化的时候就会执行--> <bean class="com.rqy.domain.SpringBean"/> </beans>

7. application-mvc.xml

<!--扫描包这个配置在springmvc的容器中不能去掉-->
<context:component-scan base-package="com.rqy.controller"> <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/> </context:component-scan> <mvc:annotation-driven/> <!--测试的bean，当有url请求的时候才会执行--> <bean class="com.rqy.domain.MvcBean"/> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/views/"/> <property name="suffix" value=".jsp"/> </bean>

8. Web.xml（分别把application.xml和application-mvc.xml配置进去）

<!--通过listner注册spring容器，父容器-->
<listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:application.xml</param-value> </context-param> <servlet> <servlet-name>dispatcher</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:application-mvc.xml</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>dispatcher</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping>

9. UserController.java

@Controller
public class UserController { @Autowired UserService userService; @RequestMapping("user") public @ResponseBody User query(int id){ User user = userService.selectByPrimaryKey(id); System.out.println(user); return user; } }

纯JavaConfig的SSM整合

思想：

1. 取消了application.xml和application-MVC.xml以及web.xml， 2. 用了一个继承AbstractAnnotationConfigDispatcherServletInitializer的类来实现具体文件配置

1. AppInitialize继承AACDSi类的书写

public class AppInitialize extends AbstractAnnotationConfigDispatcherServletInitializer { //SpringConfig指的是spring配置文件 @Override protected Class<?>[] getRootConfigClasses() { return new Class[]{SpringConfig.class}; } //SpringMvcConfig指的是springMvc配置文件 @Override protected Class<?>[] getServletConfigClasses() { return new Class[]{SpringMvcConfig.class}; } //配置sevlet请求路径/就OK了 @Override protected String[] getServletMappings() { return new String[]{"/"}; } //配置编码过滤器 @Override protected Filter[] getServletFilters() { CharacterEncodingFilter characterEncodingFilter = new CharacterEncodingFilter(); characterEncodingFilter.setEncoding("utf-8"); return new Filter[]{characterEncodingFilter}; } }

2. SpringConfig类的书写

@Configuration
@ComponentScan(value = "com.rqy",
        excludeFilters = @ComponentScan.Filter(type = FilterType.ANNOTATION,classes = {Controller.class}))
@EnableTransactionManagement @EnableAspectJAutoProxy public class SpringConfig { //dataSource，必要 @Bean public DataSource druidDatasource(){ DruidDataSource druidDataSource = new DruidDataSource(); druidDataSource.setDriverClassName("com.mysql.jdbc.Driver"); druidDataSource.setUrl("jdbc:mysql://localhost:3306/mybatisday01"); druidDataSource.setUsername("root"); druidDataSource.setPassword("123456"); return druidDataSource; } //SqlSessionFactoryBean 必要 @Bean public SqlSessionFactoryBean sqlSessionFactoryBean(DataSource dataSource){ SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean(); sqlSessionFactoryBean.setDataSource(dataSource); return sqlSessionFactoryBean; } //MapperScannerConfigurer 必要 @Bean public MapperScannerConfigurer mapperScannerConfigurer(){ MapperScannerConfigurer mapperScannerConfigurer =new MapperScannerConfigurer(); mapperScannerConfigurer.setSqlSessionFactoryBeanName("sqlSessionFactoryBean"); mapperScannerConfigurer.setBasePackage("com.rqy.mapper"); return mapperScannerConfigurer; } //文件的上传的配置，有需要才配置 @Bean public CommonsMultipartResolver multipartResolver(){ CommonsMultipartResolver commonsMultipartResolver = new CommonsMultipartResolver(); commonsMultipartResolver.setMaxInMemorySize(5240000); return commonsMultipartResolver; } //配置事务管理器，同时要开启注解 @Bean public DataSourceTransactionManager transactionManager(DataSource dataSource){ DataSourceTransactionManager dataSourceTransactionManager = new DataSourceTransactionManager(); dataSourceTransactionManager.setDataSource(dataSource); return dataSourceTransactionManager; } }

3. SpringMvcConfig配置需要实现WebMvcConfigurer接口

@EnableWebMvc
@ComponentScan(value = "com.rqy.controller",
    includeFilters =@ComponentScan.Filter(type = FilterType.ANNOTATION,classes = Controller.class) )
public class SpringMvcConfig implements WebMvcConfigurer{ <!--实现date的转换开始--> //注入本身已有的接口 @Autowired ConfigurableConversionService conversionService; //把自定义的conversionService重新注册到bean中 @Bean //保证conversionService的唯一性 @Primary public ConfigurableConversionService conversionService(){ return conversionService; } //指定执行顺序 @PostConstruct public void addConverters(){ String2DateConverter string2DateConverter = new String2DateConverter(); conversionService.addConverter(string2DateConverter); } <!--实现date的转换结束--> <!--实现过滤器的配置--> @Override public void addInterceptors(InterceptorRegistry registry) { registry.addInterceptor(new MyFirstInterceptor()); //registry.addInterceptor().addPathPatterns("/abc/**"); } <!--实现静态资源的配置--> @Override public void addResourceHandlers(ResourceHandlerRegistry registry) { registry.addResourceHandler("/pic/**").addResourceLocations("file:D:/pic/"); registry.addResourceHandler("/pic/**").addResourceLocations("classpath:/pic/"); registry.addResourceHandler("/pic/**").addResourceLocations("/WEB-INF/pic"); } //配置视图解析器 @Bean public InternalResourceViewResolver internalResourceViewResolver(){ InternalResourceViewResolver internalResourceViewResolver = new InternalResourceViewResolver(); internalResourceViewResolver.setPrefix("/WEB-INF/views/"); internalResourceViewResolver.setSuffix(".jsp"); return internalResourceViewResolver; } }

4. 导包

<dependencies>
    <dependency>
        <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>5.1.8.RELEASE</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>3.0-alpha-1</version> <scope>provided</scope> </dependency> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.5.2</version> </dependency> <!--aspectj--> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aspects</artifactId> <version>5.0.2.RELEASE</version> </dependency> <!--mybatis对spring的支持包--> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.3.2</version> </dependency> <!--数据源和mysql驱动--> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.1.11</version> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.47</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>5.1.8.RELEASE</version> </dependency> <!--test--> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> <scope>test</scope> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>5.1.8.RELEASE</version> </dependency> <!--jackson--> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.9.7</version> </dependency> <!--文件上传的包--> <dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>2.6</version> </dependency> <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>1.3.3</version> </dependency> </dependencies>

5. 日期格式的转换

public class String2DateConverter implements Converter<String,Date> { @Override public Date convert(String s) { SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd"); try { Date date=sdf.parse(s); return date; } catch (ParseException e) { e.printStackTrace(); } return null; } }

6. 过滤器的实现

public class MyFirstInterceptor  implements HandlerInterceptor{ @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { System.out.println("preHandle"); return true; } @Override public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception { System.out.println("postHandle"); } @Override public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception { } }

7. 创建UserMapper接口（和上面一样）

8. 创建UserService接口（和上面一样）

9. 创建UserMapperImpl实现类（和上面一样）

10. UserMapper.xml创建（和上面一样）一般通过你工程来完成

11. UserController测试类

@Controller
public class UserController { @Autowired UserService userService; @RequestMapping("user") @ResponseBody public User query(int id, Model model){ User user = userService.selectByPrimaryKey(id); model.addAttribute("user",user.toString()); return user; } }