SSM整合

SSM整合

1、 依赖

• 首先看一下我们需要的依赖

  <!--    这个非常重要，要修改他的打包方式-->
  <packaging>war</packaging>
  
  <properties>
      <javax.servlet-api.version>4.0.1</javax.servlet-api.version>
      <spring.version>5.2.9.RELEASE</spring.version>
      <aspectjweaver.version>1.9.5</aspectjweaver.version>
      <mysql.version>5.1.49</mysql.version>
      <mybatis.version>3.5.4</mybatis.version>
      <mybatis-spring.version>2.0.4</mybatis-spring.version>
      <druid.version>1.1.10</druid.version>
      <lombok.version>1.18.12</lombok.version>
      <junit.version>4.13</junit.version>
      <log4j.version>1.2.17</log4j.version>
      <fastjson.version>1.2.68</fastjson.version>
  </properties>
  
  <dependencies>
      <!--        WEB依赖-->
      <dependency>
          <groupId>javax.servlet</groupId>
          <artifactId>javax.servlet-api</artifactId>
          <version>${javax.servlet-api.version}</version>
      </dependency>
      <!--        spring的依赖-->
      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-context</artifactId>
          <version>${spring.version}</version>
      </dependency>
      <!--        AOP织入的依赖-->
      <dependency>
          <groupId>org.aspectj</groupId>
          <artifactId>aspectjweaver</artifactId>
          <version>${aspectjweaver.version}</version>
      </dependency>
      <!--        数据库的依赖-->
      <dependency>
          <groupId>mysql</groupId>
          <artifactId>mysql-connector-java</artifactId>
          <version>${mysql.version}</version>
      </dependency>
      <!--        mybatis的依赖-->
      <dependency>
          <groupId>org.mybatis</groupId>
          <artifactId>mybatis</artifactId>
          <version>${mybatis.version}</version>
      </dependency>
      <!--        spring整合mybatis的依赖-->
      <dependency>
          <groupId>org.mybatis</groupId>
          <artifactId>mybatis-spring</artifactId>
          <version>${mybatis-spring.version}</version>
      </dependency>
      <!--        事务的依赖（注意版本不能大过spring的版本）-->
      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-jdbc</artifactId>
          <version>4.3.27.RELEASE</version>
      </dependency>
      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-tx</artifactId>
          <version>${spring.version}</version>
      </dependency>
      <!--        数据源的依赖-->
      <dependency>
          <groupId>com.alibaba</groupId>
          <artifactId>druid</artifactId>
          <version>${druid.version}</version>
      </dependency>
      <!--        SpringMVC的依赖-->
      <dependency>
          <groupId>org.springframework</groupId>
          <artifactId>spring-webmvc</artifactId>
          <version>${spring.version}</version>
      </dependency>
      <dependency>
          <groupId>org.projectlombok</groupId>
          <artifactId>lombok</artifactId>
          <version>${lombok.version}</version>
      </dependency>
      <dependency>
          <groupId>junit</groupId>
          <artifactId>junit</artifactId>
          <version>${junit.version}</version>
      </dependency>
      <dependency>
          <groupId>log4j</groupId>
          <artifactId>log4j</artifactId>
          <version>${log4j.version}</version>
      </dependency>
      <dependency>
          <groupId>com.alibaba</groupId>
          <artifactId>fastjson</artifactId>
          <version>${fastjson.version}</version>
      </dependency>
  </dependencies>
  

  2、Mybatis

• Mybatis

  整合mybatis我们需要两个文件一个是mybatis-config的核心配置文件，另一个就是spring整合mybatis的文件

  • mybatis-config.xml

    我们一般在这个文件中只配置别名和mybatis的动态行为

    <configuration>
    	<!--    设置-->
    	<settings>
    		<setting name="logImpl" value="LOG4J"/>
    	</settings>
    
    	<!--    别名-->
    	<typeAliases>
    		<package name="com.hdax.pojo"/>
     	</typeAliases>
    </configuration>
    

  • spring-dao.xml

    在spring中配置数据源和mapper

    	<!--    扫描包-->
    	 <context:component-scan base-package="com.hdax.dao"/>
    
        <!--    引用外部配置文件-->
        <context:property-placeholder location="classpath:database.properties"/>
    
        <!--    配置数据源-->
        <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
            <property name="driverClassName" value="${jdbc.driver}"/>
            <property name="url" value="${jdbc.url}"/>
            <property name="username" value="${jdbc.username}"/>
            <property name="password" value="${jdbc.password}"/>
        </bean>
    
        <!--    sqlSessionFactory-->
        <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
            <!--        注入数据源-->
            <property name="dataSource" ref="dataSource"/>
            <!--        注入mybatis-config配置文件-->
            <property name="configLocation" value="classpath:config/mybatis-config.xml"/>
            <!--        注入mapper-->
            <property name="mapperLocations" value="classpath:com/hdax/dao/*.xml"/>
        </bean>
    
        <!--    sqlSession-->
        <bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
            <constructor-arg ref="sqlSessionFactory"/>
        </bean>
    
        <!--    动态代理mapper-->
        <mybatis:scan base-package="com.hdax.dao"/>
    

3、Spring

• spring-service.xml

  我们一般在这个文件中控制service层中的事情(AOP、事务都是在这里控制)

      <!--    扫描service包-->
  <context:component-scan base-package="com.hdax.service"/>
  
  <!--    配置声明式事务-->
  <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">`
      <property name="dataSource" ref="dataSource"/>
  </bean>
  
  <!--   事务注解 -->
  <tx:annotation-driven transaction-manager="transactionManager"/>
  

4、SpringMVC

• web.xml

  在该文件主要注册调度中心与spring配置文件做连接

      <!--    注册Dispatcher-->
  <servlet>
      <servlet-name>spring-mvc</servlet-name>
      <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
      <init-param>
          <!--            连接spring配置文件-->
          <param-name>contextConfigLocation</param-name>
          <param-value>classpath:config/applicationContext.xml</param-value>
      </init-param>
      <!--        启动级别-->
      <load-on-startup>1</load-on-startup>
  </servlet>
  
  <servlet-mapping>
      <servlet-name>spring-mvc</servlet-name>
      <url-pattern>/</url-pattern>
  </servlet-mapping>
  
  <!--    过滤器用于解决乱码问题-->
  <filter>
      <filter-name>encoding</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>encoding</filter-name>
      <url-pattern>/*</url-pattern>
  </filter-mapping>
  
  <!--    session失效时间-->
  <session-config>
      <session-timeout>15</session-timeout>
  </session-config>
  

• spring-controller.xml

  在该文件中主要控制controller配置视图解析器

    <!--    扫描controller-->
  <context:component-scan base-package="com.hdax.controller"/>
  <!--   静态资源过滤-->
  <mvc:default-servlet-handler/>
  <!--    注解驱动-->
  <mvc:annotation-driven/>
  
  <!-- 处理请求返回json字符串的中文乱码问题 -->
  <mvc:annotation-driven>
      <mvc:message-converters register-defaults="false">
          <bean id="fastJsonHttpMessageConverter" class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">
              <property name="supportedMediaTypes">
                  <list>
                      <value>application/json;characterEncoding=UTF-8</value>
                  </list>
              </property>
              <property name="fastJsonConfig">
                  <bean class="com.alibaba.fastjson.support.config.FastJsonConfig">
                      <property name="serializerFeatures">
                          <array>
                              <value>WriteDateUseDateFormat</value>
                              <value>PrettyFormat</value>
                              <value>QuoteFieldNames</value>
                              <value>DisableCircularReferenceDetect</value>
                          </array>
                      </property>
                  </bean>
              </property>
          </bean>
      </mvc:message-converters>
  </mvc:annotation-driven>
  
  <!--    视图解析器-->
  <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
      <property name="prefix" value="/WEB-INF/jsp/"/>
      <property name="suffix" value=".jsp"/>
  </bean>
  

5、整合

• applicationContext.xml

  在该文件中引用其他层文件整合到一块

   <!--   扫描实体类 -->
  <context:component-scan base-package="com.hdax.pojo"/>
  
  <!--    dao-->
  <import resource="classpath:config/spring-dao.xml"/>
  <!--    service-->
  <import resource="classpath:config/spring-service.xml"/>
  <!--    controller-->
  <import resource="classpath:config/spring-controller.xml"/>