ssm的宣告式事務控制無效的原因----之一
阿新 • • 發佈：2018-12-15
先上程式碼：
applicationContext.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: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"> <!--配置spring的註解掃描--> <context:component-scan base-package="com.ddup"> <!--制定掃包規則，不掃描@Controller 註解的 JAVA 類，其他的還是要掃描 --> <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/> </context:component-scan> <!--sqlmapconfig的內容--> <!-- 配置C3P0的連線池物件 --> <!--<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">--> <!--<property name="driverClassName" value="oracle.jdbc.OracleDriver"/>--> <!--<property name="url" value="jdbc:oracle:thin:@192.168.80.88:1521:orcl"/>--> <!--<property name="username" value="scott"/>--> <!--<property name="password" value="tiger"/>--> <!--</bean>--> <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/ssm"/> <property name="username" value="root"/> <property name="password" value="root"/> </bean> <!-- 配置SqlSession的工廠 --> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <property name="dataSource" ref="dataSource"/> </bean> <!-- 配置掃描dao的包 --> <bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <property name="basePackage" value="com.ddup.dao"/> </bean> <!--配置宣告式事務控制--> <!--1. 配置事務管理器--> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"/> </bean> <!--2. 配置事務的通知--> <tx:advice id="txAdvice"> <tx:attributes> <tx:method name="*" propagation="REQUIRED" read-only="false"/> <!--<tx:method name="find*" propagation="SUPPORTS" read-only="true"/>--> </tx:attributes> </tx:advice> <!--3. 配置aop--> <aop:config> <!--配置切入點表示式--> <aop:pointcut id="pt1" expression="execution(* com.ddup.service.service.impl.*.*(..))"/> <!--建立切入點表示式和事務通知的對應關係--> <aop:advisor advice-ref="txAdvice" pointcut-ref="pt1" /> </aop:config> <!--開啟註解的宣告式事務控制--> <!--<tx:annotation-driven transaction-manager="transactionManager" />--> </beans>
springMVC.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <!-- 掃描controller的註解，別的不掃描 --> <context:component-scan base-package="com.ddup"> <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/> </context:component-scan> <!-- 配置檢視解析器 --> <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <!-- JSP檔案所在的目錄 --> <property name="prefix" value="/WEB-INF/pages/" /> <!-- 檔案的字尾名 --> <property name="suffix" value=".jsp" /> </bean> <mvc:default-servlet-handler/> <mvc:annotation-driven /> </beans>
web.xml:
<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd" > <!--配置Spring的監聽器，預設只加載WEB-INF目錄下的applicationContext.xml配置檔案--> <web-app> <!-- 配置Spring的監聽器 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- 配置載入類路徑的配置檔案 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:applicationContext.xml</param-value> </context-param> <!-- 配置前端控制器：伺服器啟動必須載入，需要載入springmvc.xml配置檔案 --> <!--配置前端控制器--> <servlet> <servlet-name>dispatcherServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!--載入springmvc.xml配置檔案--> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath*:springmvc.xml</param-value> </init-param> <!-- 伺服器啟動的時候，讓DispatcherServlet物件建立 --> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>dispatcherServlet</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!--解決中文亂碼的過濾器--> <!-- 配置解決中文亂碼的過濾器 --> <filter> <filter-name>characterEncodingFilter</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>characterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> </web-app>
我暈，以上程式碼看了一天一夜，看不出哪裡錯誤，在網上百度，各種原因也沒有個可以解決我的問題的。後來看了個帖子，靈感突然來了，更改如下：將springMVC.xml的掃描檔案標籤路徑精確到controller即可：
改之前：
<!-- 掃描controller的註解，別的不掃描 -->
<context:component-scan base-package="com.ddup">
<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
</context:component-scan>
改之後：
<!-- 掃描controller的註解，別的不掃描 -->
<context:component-scan base-package="com.ddup.controller">
<!--<context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>-->
</context:component-scan>
以後凡是mvc的掃描包路徑都精確到controller層把