JSF2：从Spring向managedbean注入服务对象？
我已经测试了这个，尝试将服务对象注入@ManagedBean，但它失败了nullpointerexception，因为userService为null。
我目前正在使用Tomcat 7，JSF 2，这里有一些我的pom.xml
1.6 3.0.3.RELEASE 3.6.0.Final .... 这是exception跟踪：
javax.faces.el.EvaluationException: java.lang.NullPointerException at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:102) at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102) at javax.faces.component.UICommand.broadcast(UICommand.java:315) at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:775) at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1267) at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:82) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:312) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:306) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:108) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:558) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:379) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:243) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:259) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:281) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:636) Caused by: java.lang.NullPointerException at org.albertkam.ui.LoginBean.login(LoginBean.java:38) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:616) at org.apache.el.parser.AstValue.invoke(AstValue.java:262) at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:278) at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:98) at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88) ... 23 more
这是我的ManagedBean：
@ManagedBean @RequestScoped public class LoginBean { private MstUser entityMstUser; @Autowired private UserService userService; @PostConstruct private void init() { this.entityMstUser = new MstUser(); }
这是我的服务bean ..
@Service public class UserService { @Autowired private UserDAO userDao; public void login(MstUser entityMstUser) {
这是我的applicationContext.xml ..
还有我的web.xml
albert simpleWebapp contextConfigLocation /WEB-INF/applicationContext.xml /WEB-INF/datasourceContext.xml org.springframework.web.context.ContextLoaderListener facesServlet javax.faces.webapp.FacesServlet facesServlet /faces/* faces/index.xhtml javax.faces.PROJECT_STAGE Development
还有我的faces-config.xml，虽然这里真的没什么关系..
in en org.albertkam.common.messages msgs org.albertkam.common.errors errs <!-- id.co.sofcograha.override_messages --> org.albertkam.common.BusinessExceptionHandlerFactory
我想知道是否有可能做这样的事情，将一个Spring托管bean注入@ManagedBean？
请分享您的经验..
谢谢 ！
***********添加了一些新的实验结果****************
org.springframework.web.context.request.RequestContextListener org.jboss.weld.environment.servlet.Listener Hello,
我已经测试了这个，尝试将服务对象注入@ManagedBean，但它失败了nullpointerexception，因为userService为null。
我目前正在使用Tomcat 7，JSF 2，这里有一些我的pom.xml
1.6 3.0.3.RELEASE 3.6.0.Final ....
这是exception跟踪：
javax.faces.el.EvaluationException: java.lang.NullPointerException at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:102) at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102) at javax.faces.component.UICommand.broadcast(UICommand.java:315) at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:775) at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1267) at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:82) at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101) at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118) at javax.faces.webapp.FacesServlet.service(FacesServlet.java:312) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:306) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:161) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:108) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:558) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:379) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:243) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:259) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:281) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:636) Caused by: java.lang.NullPointerException at org.albertkam.ui.LoginBean.login(LoginBean.java:38) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:616) at org.apache.el.parser.AstValue.invoke(AstValue.java:262) at org.apache.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:278) at com.sun.faces.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:98) at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:88) ... 23 more
这是我的ManagedBean：
@ManagedBean @RequestScoped public class LoginBean { private MstUser entityMstUser; @Autowired private UserService userService; @PostConstruct private void init() { this.entityMstUser = new MstUser(); }
这是我的服务bean ..
@Service public class UserService { @Autowired private UserDAO userDao; public void login(MstUser entityMstUser) {
这是我的applicationContext.xml ..
还有我的web.xml
albert simpleWebapp contextConfigLocation /WEB-INF/applicationContext.xml /WEB-INF/datasourceContext.xml org.springframework.web.context.ContextLoaderListener facesServlet javax.faces.webapp.FacesServlet facesServlet /faces/* faces/index.xhtml javax.faces.PROJECT_STAGE Development
还有我的faces-config.xml，虽然这里真的没什么关系..
in en org.albertkam.common.messages msgs org.albertkam.common.errors errs <!-- id.co.sofcograha.override_messages --> org.albertkam.common.BusinessExceptionHandlerFactory
我想知道是否有可能做这样的事情，将一个Spring托管bean注入@ManagedBean？
请分享您的经验..
谢谢 ！
***********添加了一些新的实验结果****************
刚才我尝试使用@Named替换@ManagedBean和@Inject来取代@Autowired，虽然我还没有真正理解其原因，但它确实有效。
所以这是修改后的托管bean：
@Named("userBean") @RequestScoped public class LoginBean { private MstUser entityMstUser; @Inject private UserService userService; @PostConstruct private void init() { this.entityMstUser = new MstUser(); }
这有效，服务对象被注入，虽然userService由Spring管理？ 怎么可能？
这是我在路上添加的一些额外的东西..
我在web.xml中添加了这个
org.springframework.web.context.request.RequestContextListener org.jboss.weld.environment.servlet.Listener
我还添加了一个空的WEB-INF / beans.xml
这在faces-config.xml org.springframework.web.jsf.el.SpringBeanFacesELResolver中
我有点担心使用@Named，因为我和ViewScoped一起使用它有一个糟糕的经历 。 当我让@ManagedBean能够通过spring框架注入服务对象时，我会觉得更安全。
我想知道你们通常做什么来连接ManagedBean和你的业务服务对象..使用CDI，纯粹的Spring，还是它们的组合？
faces-config.xml缺少变量解析器
org.springframework.web.jsf.DelegatingVariableResolver
在web.xml缺少RequestContextListener侦听器
org.springframework.web.context.request.RequestContextListener
在您的应用程序上下文中，xml为“UserService”定义了一个bean，例如，