SSM整合(Maven)笔记

关于ssm的整合，其实就是整合mybatis和spring，也就是将mybatis的配置文件写在spring的配置文件中

这里我们将使用maven来管理工程，maven和普通的创建其实差不多，就是方便打包和导jar包容易(目前个人水平有限，目前就用到这些)，不会maven的可以将引入依赖这一步骤看做导包，将引入的依赖看做jar包

关于maven的创建：

这就是maven的目录结构，大概就是一个父model 加上三个子model，要注意，其中的web层使用webapp模板创建，这里我们使用的是三层架构（持久层-mybatis,表现层-spring mvc,业务层-javabean），并且基于MVC模式，创建完成后我们来导入依赖jar包我们来更具每层需要实现的功能来导入依赖，功能如下：

总pom.xml

    <groupId>com.waectr</groupId>
    <artifactId>oa</artifactId>
    <packaging>pom</packaging>
    <version>1.0-SNAPSHOT</version>
    <!--设置三个子模块-->
    <modules>
        <module>oa_dao</module>
        <module>oa_biz</module>
        <module>oa_web</module>
    </modules>

    <!--全局配置-->
    <properties>
        <spring.version>4.0.2.RELEASE</spring.version>
    </properties>

dao层的pom.xml

<dependencies>
        <!--数据库-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.44</version>
        </dependency>
        <!--mybatis-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.4.4</version>
        </dependency>
        <!--spring核心-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!--spring-jdbc-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!--mybatis和spring整合包-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.3.1</version>
        </dependency>
    </dependencies>

biz层的pom.xml

<dependencies>
        <!--业务层，需要持久层-->
        <dependency>
            <groupId>com.waectr</groupId>
            <artifactId>oa_dao</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
        <!--spring-事务-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <!--切面-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.8.13</version>
        </dependency>
    </dependencies>

web层de pom.xml

<dependencies>
        <!--测试-->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>
        <!--事务层-->
        <dependency>
            <groupId>com.waectr</groupId>
            <artifactId>oa_biz</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>4.0.0</version>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>jstl</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>
    </dependencies>

至此，我们所有的jar包导入成功

下面开始配置xml文件以及创建目录结构

从dao层开始：

这是目录结构，它的xml文件是

<?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"
       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">

    <context:component-scan base-package="com.waectr.oa.dao"/>

    <!--配置数据源-->
    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/oa?useUnicode=true&amp;characterEncoding=utf-8"/>
        <property name="username" value="root"/>
        <property name="password" value="199810"/>
    </bean>

    <bean id="sessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <property name="typeAliasesPackage" value="com.waectr.oa.entity"/>
    </bean>

    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="sqlSessionFactoryBeanName" value="sessionFactory"/>
        <property name="basePackage" value="com.waectr.oa.dao"/>
    </bean>

</beans>

 

resource中的com.waectr.oa.dao放的是xml映射文档(要和接口名字一样)

 

biz层：

xml文档

<?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/aop
    http://www.springframework.org/schema/aop/spring-aop.xsd
    http://www.springframework.org/schema/tx
    http://www.springframework.org/schema/tx/spring-tx.xsd">

    <import resource="spring-dao.xml"/>

    <context:component-scan base-package="com.waectr.oa.biz"/>

    <aop:aspectj-autoproxy />


    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
            <property name="dataSource" ref="dataSource"/>
    </bean>

    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="get*" read-only="true"/>
            <tx:method name="find*" read-only="true"/>
            <tx:method name="search*" read-only="true"/>
            <tx:method name="*" propagation="REQUIRED"/>
        </tx:attributes>
    </tx:advice>

    <!--将通知和切入点关联-->

    <aop:config>
        <aop:pointcut id="txpc" expression="execution(* com.waectr.oa.biz.*.*(..))"/>
        <aop:advisor advice-ref="txAdvice" pointcut-ref="txpc"/>
    </aop:config>

</beans>

事务层impl中放的是接口的实现类

 

web层：

<?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: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/mvc
    http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <import resource="spring-biz.xml"/>

    <context:component-scan base-package="com.waectr.oa.controller"/>

    <mvc:annotation-driven/>

    <!--静态资源交给serlvet去处理-->
    <mvc:default-servlet-handler/>

    <!--试图转化器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
        <property name="prefix" value="/WEB-INF/pages/"/>
        <property name="suffix" value=".jsp"/>
    </bean>


</beans>

controller:放控制器  global：放一些全局的过滤器

 

最后是最重要的一个东西！应为web程序要从这里出发

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">

  <filter>
    <filter-name>encoding</filter-name>
    <filter-class>com.waectr.oa.global.EncodingFilter</filter-class>
    <init-param>
      <param-name>encoding</param-name>
      <param-value>utf-8</param-value>
    </init-param>
  </filter>

  <!--设置让静态资源通过-->
  <filter-mapping>
    <filter-name>encoding</filter-name>
    <url-pattern>/</url-pattern>
  </filter-mapping>

  <servlet-mapping>
    <servlet-name>default</servlet-name>
    <url-pattern>/assets/*</url-pattern>
    <url-pattern>/js/*</url-pattern>
    <url-pattern>/vendor/*</url-pattern>
  </servlet-mapping>
    <!--spring mvc 加载-->
  <servlet>
    <servlet-name>SpringMVC</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:spring-web.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>SpringMVC</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>


</web-app>

至此所有的配置已经完成，可以直接使用了！