I'm trying to use the Spring plugin to inject a dependency into my action at
runtime. This is the first time I've tried this with Struts2 so I may have
missed something but I'm stumped because I can see the dependency is injected
but then the object is later null when I need to use it. Here is my action
class code:
public class UserRegisterAction extends ActionSupport {
private User user = new User();
@Override
public String execute(){
getUserService().saveUser(user);
return "success";
}
public UserServiceImpl getUserService(){
return userService;
}
UserServiceImpl userService;
public void setUserService(UserServiceImpl us){
this.userService = us;
}
}
Using the debugger I can see that upon startup "setUserService is called and
this.userService is set, so the injection appears to be working ok, but when
the execute method is called when the page is submitted userService is null.
I'm quite new to Struts but I don't understand how my userService is being null.
Can anyone see what I am missing?
My applicationContext:
<?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: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/tx
http://www.springframework.org/schema/tx/spring-tx.xsd";
default-autowire="byName">
<bean
class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor"
/>
<bean
class="org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor"/>
<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="jpaVendorAdapter">
<bean
class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="databasePlatform"
value="org.hibernate.dialect.MySQL5Dialect" />
<property name="database" value="MYSQL" />
<property name="showSql" value="true" />
</bean>
</property>
</bean>
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="org.gjt.mm.mysql.Driver" />
<property name="url" value="jdbc:mysql://127.0.0.1:3306/baseapp" />
<property name="username" value="xxxxxx" />
<property name="password" value="xxxxxx" />
</bean>
<bean id="transactionManager"
class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>
<tx:annotation-driven transaction-manager="transactionManager" />
<bean id="userService" class="com.xxxxx.service.UserServiceImpl"
scope="prototype"/>
<bean id="userAction" class="com.xxxxxx.action.UserRegisterAction">
<property name="userService" ref="userService"/>
</bean>
</beans>
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>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>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
</web-app>
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