求高手帮我解答：struts+spring 没注入成功？

weixin_36297453 2016-10-03 11:02:18

UserAction.java
package com.action;

@Component("user")
@Scope("prototype")
public class UserAction extends ActionSupport {
private String username;
private String password;
private String password2;
private UserManager um;
public UserManager getUm() {
return um;
}
@Resource(name = "userManagerImpl")
public void setUm(UserManager um) {
this.um = um;
}
public String execute() throws Exception {
User u = new User();
u.setUsername(username);
u.setPassword(password);
System.out.println(um);//这里为什么打印null???
if (um.exists(u)) {
return "fail";
}
um.add(u);
return "success";
}
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;
}

public String getPassword2() {
return password2;
}
public void setPassword2(String password2) {
this.password2 = password2;
}
}

UserManager.java
@Component("user")
@Scope("prototype")
public class UserAction extends ActionSupport {
private String username;
private String password;
private String password2;
private UserManager um;
public UserManager getUm() {
return um;
}
@Resource(name = "userManagerImpl")
public void setUm(UserManager um) {
this.um = um;
}
public String execute() throws Exception {
User u = new User();
u.setUsername(username);
u.setPassword(password);
System.out.println(um);//这里为什么打印null，为什么没注入成功???
if (um.exists(u)) {
return "fail";
}
um.add(u);
return "success";
}
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;
}
public String getPassword2() {
return password2;
}
public void setPassword2(String password2) {
this.password2 = password2;
}
}

UserDaoImpl.java
package com.dao.impl;
@Component("userDaoImpl")
public class UserDaoImpl implements UserDao {
private HibernateTemplate hibernateTemplate;
public void save(User u) {
hibernateTemplate.save(u);
}
public boolean checkUserExistsWithName(String username) {
List<User> users = hibernateTemplate
.find("from User u where u.username = '" + username + "'");
if (users != null && users.size() > 0) {
return true;
}
return false;
}
public HibernateTemplate getHibernateTemplate() {
return hibernateTemplate;
}
@Resource(name="hibernateTemplate")
public void setHibernateTemplate(HibernateTemplate hibernateTemplate) {
this.hibernateTemplate = hibernateTemplate;
}
}

web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 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_2_5.xsd">
<welcome-file-list>
<welcome-file>register.jsp</welcome-file>
</welcome-file-list>

<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/applicationContext*.xml, /WEB-INF/applicationContext-*.xml</param-value>
</context-param>

<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>

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: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-2.5.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-2.5.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">

<context:component-scan base-package="com" />

<bean
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<value>classpath:jdbc.properties</value>
</property>
</bean>

<bean id="dataSource" destroy-method="close"
class="org.apache.commons.dbcp.BasicDataSource">
<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>

<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource" ref="dataSource" />

<property name="packagesToScan">
<list>
<value>com.model</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="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate">
<property name="sessionFactory" ref="sessionFactory"></property>
</bean>

<bean id="txManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>

<aop:config>
<aop:pointcut id="bussinessService"
expression="execution(public * service.*.*(..))" />
<aop:advisor pointcut-ref="bussinessService"
advice-ref="txAdvice" />
</aop:config>

<tx:advice id="txAdvice" transaction-manager="txManager">
<tx:attributes>
<tx:method name="exists" read-only="true" />
<tx:method name="add*" propagation="REQUIRED"/>
</tx:attributes>
</tx:advice>
</beans>

struts.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.1//EN"
"http://struts.apache.org/dtds/struts-2.1.dtd">

<struts>
<package name="registration" extends="struts-default">

<action name="user" class="com.action.UserAction">

<result name="success">/registerSuccess.jsp</result>
<result name="fail">/registerFail.jsp</result>

</action>

</package>
</struts>

我把import都省略没放出来了，想问问为什么UserManager.java的注释那里um没有注入成功，因为我测试了打印他是空值。

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