SSM整合(Maven)筆記

關於ssm的整合，其實就是整合mybatis和spring，也就是將mybatis的配置文件寫在spring的配置文件中

這裏我們將使用maven來管理工程，maven和普通的創建其實差不多，就是方便打包和導jar包容易(目前個人水平有限，目前就用到這些)，不會maven的可以將引入依賴這一步驟看做導包，將引入的依賴看做jar包

關於maven的創建：

這就是maven的目錄結構，大概就是一個父model 加上三個子model，要注意，其中的web層使用webapp模板創建，這裏我們使用的是三層架構（持久層-mybatis,表現層-spring mvc,業務層-javabean），並且基於MVC模式，創建完成後我們來導入依賴jar包我們來更具每層需要實現的功能來導入依賴，功能如下：

總pom.xml

    <groupId>com.waectr</groupId>
    <artifactId>oa</artifactId>
    <packaging>pom</packaging>
    <version>1.0-SNAPSHOT</version>
    <!--設置三個子模塊-->
    <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層的pom.xml

<dependencies>
        <!--數據庫-->
        <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層的pom.xml

<dependencies>
        <!--業務層，需要持久層-->
        <dependency>
            <groupId>com.waectr</groupId>
            <artifactId>oa_dao</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
        <!--spring-事務-->
        <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層de pom.xml

<dependencies>
        <!--測試-->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
            <scope>test</scope>
        </dependency>
        <!--事務層-->
        <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，我們所有的jar包導入成功

下面開始配置xml文件以及創建目錄結構

從dao層開始：

這是目錄結構，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"/>

    <!--配置數據源-->
    <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映射文檔(要和接口名字一樣)

 

biz層：

xml文檔

<?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>

    <!--將通知和切入點關聯-->

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

</beans>

事務層impl中放的是接口的實現類

 

web層：

<?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/>

    <!--靜態資源交給serlvet去處理-->
    <mvc:default-servlet-handler/>

    <!--試圖轉化器-->
    <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：放一些全局的過濾器

 

最後是最重要的一個東西！應爲web程序要從這裏出發

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>

  <!--設置讓靜態資源通過-->
  <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 加載-->
  <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>

至此所有的配置已經完成，可以直接使用了！