struts2.3.4,spring3.2.0,hibernate3整合 action中的service获取null,spring注入不进来。
struts.xml:
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
"http://struts.apache.org/dtds/struts-2.3.dtd">
<struts>
<constant name="struts.devMode" value="true" />
<package name="default" namespace="/" extends="struts-default">
<action name="user" class="userAction">
<result name="success">/Hello.jsp</result>
<result name="fail">/Fail.jsp</result>
</action>
</package>
</struts>beans.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:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">
<context:annotation-config />
<context:component-scan base-package="com.ssh"/>
<bean id="dataSource"
class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="${jdbc.driverClassName}"/>
<property name="url" value="${jdbc.url}"/>
<property name="username" value="${jdbc.username}"/>
<property name="password" value="${jdbc.password}"/>
</bean>
<context:property-placeholder location="classpath:jdbc.properties"/>
<bean id="mySessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="annotatedClasses">
<list>
<value>com.ssh.model.User</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.show_sql">true</prop>
</props>
</property>
</bean>
<bean id="txManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="mySessionFactory" />
</bean>
<aop:config>
<aop:pointcut expression="execution(public * com.ssh.service.*.*(..))" id="serviceOperation"/>
<aop:advisor advice-ref="txAdvice" pointcut-ref="serviceOperation"/>
</aop:config>
<tx:advice id="txAdvice" transaction-manager="txManager">
<tx:attributes>
<tx:method name="checkUserName" read-only="true"/>
<tx:method name="add*" propagation="REQUIRED"/>
</tx:attributes>
</tx:advice>
<bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate">
<property name="sessionFactory" ref="mySessionFactory"></property>
</bean>
</beans>web.xml:
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.0"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<!-- 指明spring配置文件在何处 -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/classes/beans.xml</param-value>
</context-param>
<!-- 加载spring配置文件applicationContext.xml -->
<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
<!-- 加载struts2核心 -->
<filter>
<filter-name>struts2</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>UserAcion.java:package com.ssh.action;
import javax.annotation.Resource;
import org.springframework.stereotype.Component;
import com.opensymphony.xwork2.ActionSupport;
import com.ssh.model.User;
import com.ssh.service.UserService;
@Component
public class UserAction extends ActionSupport{
private static final long serialVersionUID = 1L;
private String username;
private String password;
private UserService userService;
@Override
public String execute() throws Exception {
User user = new User();
user.setUsername(username);
user.setPassword(password);
if(userService.checkUserName(user)) {
return "fail";
}
userService.add(user);
return "success";
}
public UserService getUserService() {
return userService;
}
@Resource(name="userService")
public void setUserService(UserService userService) {
this.userService = userService;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}UserServiceImpl.javapackage com.ssh.service.impl;
import javax.annotation.Resource;
import org.springframework.stereotype.Component;
import com.ssh.dao.UserDao;
import com.ssh.model.User;
import com.ssh.service.UserService;
@Component
public class UserServiceImpl implements UserService{
private UserDao userdao;
public UserDao getUserdao() {
return userdao;
}
@Resource(name="userDaoimpl")
public void setUserdao(UserDao userdao) {
this.userdao = userdao;
}
@Override
public void add(User user) {
userdao.save(user);
}
@Override
public boolean checkUserName(User user) {
return userdao.checkUserExistByName(user.getUsername());
}
}已经加入了struts2-spring-plugin-2.3.4.jar和ssh中必要的jar.后台不报错，就是获取不到action中的service。想不明白。求大家帮助。如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
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评论（12）
如果你用的是spring的mvc，最好这样写,@service注入
。额，我刚学ssh。呵呵，要一步一步学起才行啊，不能跳。
怎么还在用struct，spring mvc就很好啊。
我已经把问题解决了，其实是我的包有点错乱了，我把所以的包都删了，再重新导进了Lib后就能运行了。
.你那是属性注入。和set方法注入一样的。
@何粤威 哦。不好意思...我一直用属性注入.没怎么玩过set注入
@Resource(name="userService")不应该写到setUserDao上吧。。要写到private
UserDao userdao;这个上面吧
那就不清楚了，写正确还是没取到，没遇到过呢。可以在setter方法上加个@Required看他要注入的究竟是什么。另外可以考虑改一下log4j的配置，让Spring的debug日志全部输出来，里面有每个bean初始化的相关信息：
#system log-------------------------------- log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.Target=System.out log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern=%d{ISO8601} %l %c%n%p: %m%n log4j.rootLogger=info, stdout # Spring log4j.logger.org.springframework=debug, stdout # Druid log4j.logger.druid.sql=warn, stdout log4j.logger.druid.sql.DataSource=warn, stdout log4j.logger.druid.sql.Connection=warn, stdout log4j.logger.druid.sql.Statement=warn, stdout log4j.logger.druid.sql.ResultSet=warn, stdout # Struts2 log4j.logger.org.apache.struts2=warn, stdout # Project log4j.logger.cn.org.sysu.cems=warn, stdout log4j.logger.cn.org.sysu.cems.util.dbtemplate=debug, stdout log4j.logger.cn.org.sysu.cems.util.debug=debug, stdout啊。对不起，
@Resource(name="userService") public void setUserService(UserService userService) { this.userService = userService; }这里写错了，应该是：
修改下问题。获得还是null。
对不起。题目有个地方打错了，我修改了下，还是获取null
UserServiceImpl.java的@Component加参数@Component("userService")
Spring的自动加载默认是把类短名的首字母小写做bean的name。或者注入的地方@Resource的name指定成userServiceImpl
我已经把问题解决了，其实是我的包有点错乱了，我把所以的包都删了，再重新导进了Lib后就能运行了。