SSM配置文件

SSM.png

• pom.xml

<dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>
    <!--spring核心 ioc-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>5.2.5.RELEASE</version>
    </dependency>

    <!--做事务处理-->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>5.2.5.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>5.2.5.RELEASE</version>
    </dependency>

    <!--mybatis依赖-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.5.1</version>
    </dependency>

    <!--mybatis和spring集成的依赖-->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.1</version>
    </dependency>
    <!--mysql驱动-->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>5.1.9</version>
    </dependency>

    <!--阿里数据库连接池-->
    <dependency>
      <groupId>com.alibaba</groupId>
      <artifactId>druid</artifactId>
      <version>1.1.12</version>
    </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-webmvc</artifactId>
      <version>5.2.5.RELEASE</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-core</artifactId>
      <version>2.9.3</version>
    </dependency>
    <dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-databind</artifactId>
      <version>2.9.3</version>
    </dependency>
  </dependencies>

  <build>
    <!--目的是把src/main/java中的properties和xml文件都扫描输出到target的classes中-->
    <resources>
      <resource>
        <directory>src/main/java</directory>
        <includes>
          <include>**/*.properties</include>
          <include>**/*.xml</include>
        </includes>
        <filtering>false</filtering>
      </resource>
    </resources>
    <!--指定JDK版本-->
    <plugins>
      <plugin>
        <artifactId>maven-compiler-plugin</artifactId>
        <version>3.1</version>
        <configuration>
          <source>1.8</source>
          <target>1.8</target>
        </configuration>
      </plugin>
    </plugins>
  </build>

• web.xml

    <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:conf/springmvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcherServlet</servlet-name>
        <url-pattern>*.do</url-pattern>
    </servlet-mapping>


    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:conf/spring.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <filter>
        <filter-name>characterEncodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>characterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

• springmvc.xml

     <!--配置视图解析器-->

    <!-- 声明SpringMVC中的视图解析器，帮助开发人员设置视图文件的路径-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">

        <!--前缀：视图文件的路径-->
        <property name="prefix" value="/WEB-INF/view/"/>

        <!--后缀：视图文件 的扩展名-->
        <property name="suffix" value=".jsp"/>
    </bean>

    <!--注解驱动-->
    <mvc:annotation-driven/>

    <!--第一种处理静态资源的方式 ,原理是：加入这个标签框架会自动创建DefaultServletHttpRequestHandler(类似创建MyController)
    这个对象可以把接收的请求转发给DefaultServlet-->
    <mvc:default-servlet-handler/>

• spring.xml

<!--
        把数据库的配置信息写在一个独立的文件中，spring读取propertise文件的内容
    -->
    <context:property-placeholder location="classpath:jdbc.properties"/>
    <!--创建数据源-->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close">

    <!--使用set注入-->
        <property name="url" value="${jdbc.url}"/>
        <property name="username" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
        <!--最大连接之是20-->
        <property name="maxActive" value="${jdbc.passMax}"/>
    </bean>

    <!--创建sqlSessionFactory对象-->
    <bean id = "sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <!--
            Mybatis的主配置文件的位置
            configLocation的类型是Resource ,指定文件路径使用classpath表示文件路径
        -->
        <property name="configLocation" value="classpath:Mybatis01.xml"/>

    </bean>

    <!--
        创建dao对象，使用SqlSession的getMapper(StudentDao.class)
        MapperScannerConfigurer：在内部调用getMapper（）为包下面的每个dao接口创建代理对象
    -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!--指定对象的id-->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>

        <!--指定包名,为包名下面的每个dao接口创建对象,对象名默认是类名首字母小写，放入到spring容器，多个包用,分隔-->
        <property name="basePackage" value="My.Li.Dao"/>
    </bean>

    <!--声明业务处理对象-->
    <bean id="service" class="My.Li.service.BuyServiceImpl">
        <property name="goodsDao" ref="goo0dsDao"/>
        <property name="saleDao" ref="saleDao"/>
    </bean>

    <!--声明事务管理器对象-->
    <bean id="myTransation" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!--连接数据库-->
        <property name="dataSource" ref="dataSource"/>
    </bean>


    <!--开启事务注解驱动 -->
    <tx:annotation-driven transaction-manager="myTransation"/>

• Mybatis.xml

   <mappers>

        <!--<mapper resource="my/three/dao/StudentDao.xml"/>-->

        <package name="My.Li.dao"/>
    </mappers>