JSF2：从Spring向managedbean注入服务对象？ [英] JSF2 : inject service objects to managedbean from Spring?
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问题描述
我已经测试了这个，尝试将服务对象注入@ManagedBean，但它失败了，因为userService为null。
我目前正在使用nullpointerexception失败。使用Tomcat 7，JSF 2，这里有一些我的pom.xml
< properties>
< java-version> 1.6< / java-version>
< org.springframework-version> 3.0.3.RELEASE< /org.springframework-version>
< org.hibernate-version> 3.6.0.Final< /org.hibernate-version>
....
< / properties>
以下是异常追踪：
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.ApplicationFilte rChain.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)
引起：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更多
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
公共类UserService {
@Autowired
private UserDAO userDao;
public void login（MstUser entityMstUser）{
这是我的applicationContext。 xml ..
<？xml version =1.0encoding =UTF-8？>
< beans xmlns =http://www.springframework.org/schema/beans
xmlns：xsi =http://www.w3.org/2001/XMLSchema-instancexmlns ：aop =http://www.springframework.org/schema/aop
xmlns：context =http://www.springframework.org/schema/context
xmlns：jee = http://www.springframework.org/schema/jeexmlns：lang =http://www.springframework.org/schema/lang
xmlns：tx =http：//www.springframework。 org / schema / txxmlns：util =http://www.springframework.org/schema/util
xsi：schemaLocation =http://www.springframework.org/schema/beans http：/ /www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring -aop-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/jee http://www.springframework.org/schema/jee/spring-jee-3.0.xsd
http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang-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/util http://www.springframework.org/schema /util/spring-util-3.0.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
default-autowire =byName>
< context：component-scan base-package =org.albertkam/>
< context：annotation-config />
< tx：annotation-driven />
< / beans>
我的web.xml
<？xml version =1.0encoding =UTF-8？>
< web-app version =2.5xmlns =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>
< display-name> albert simpleWebapp< / display-name>
< context-param>
< param-name> contextConfigLocation< / param-name>
< param-value>
/WEB-INF/applicationContext.xml
/WEB-INF/datasourceContext.xml
< / param-value>
< / context-param>
< listener>
< listener-class> org.springframework.web.context.ContextLoaderListener< / listener-class>
< / listener>
< servlet>
< servlet-name> facesServlet< / servlet-name>
< servlet-class> javax.faces.webapp.FacesServlet< / servlet-class>
< / servlet>
< servlet-mapping>
< servlet-name> facesServlet< / servlet-name>
< url-pattern> / faces / *< / url-pattern>
< / servlet-mapping>
< welcome-file-list>
< welcome-file> faces / index.xhtml< / welcome-file>
< / welcome-file-list>
< context-param>
< param-name> javax.faces.PROJECT_STAGE< / param-name>
< param-value>开发< / param-value>
< / context-param>
< / web-app>
我的faces-config.xml，虽然这里没有任何相关内容..
<？xml version =1.0encoding =UTF-8？>
< faces-config
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-facesconfig_2_0.xsd
version =2.0>
< application>
< locale-config> < / default-locale>中的
< default-locale>
< supported-locale> zh< / supported-locale>
< / locale-config>
< resource-bundle>
< base-name> org.albertkam.common.messages< / base-name>
< var> msgs< / var>
< / resource-bundle>
< resource-bundle>
< base-name> org.albertkam.common.errors< / base-name>
< var> errs< / var>
< / resource-bundle>
<！ - < message-bundle> id.co.sofcograha.override_messages< / message-bundle> - >
< / application>
< factory>
< exception-handler-factory> org.albertkam.common.BusinessExceptionHandlerFactory< / exception-handler-factory>
< / factory>
< / faces-config>
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？ / p>
请分享您的经验..
谢谢！
***********添加了一些新的实验结果****************
<听者GT;
< listener-class> org.springframework.web.context.request.RequestContextListener< / listener-class>
< / listener>
< listener>
< listener-class> org.jboss.weld.environment.servlet.Listener< / listener-class>
< / listener>你好，
我测试了这个，尝试注入服务对象是@ManagedBean，但它失败了nullpointerexception，因为userService是null。
我目前正在使用Tomcat 7，JSF 2，这里有一些我的pom.xml
< properties>
< java-version> 1.6< / java-version>
< org.springframework-version> 3.0.3.RELEASE< /org.springframework-version>
< org.hibernate-version> 3.6.0.Final< /org.hibernate-version>
....
< / properties>
以下是异常追踪：
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.ApplicationFilte rChain.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)
引起：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更多
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
公共类UserService {
@Autowired
private UserDAO userDao;
public void login（MstUser entityMstUser）{
这是我的applicationContext。 xml ..
<？xml version =1.0encoding =UTF-8？>
< beans xmlns =http://www.springframework.org/schema/beans
xmlns：xsi =http://www.w3.org/2001/XMLSchema-instancexmlns ：aop =http://www.springframework.org/schema/aop
xmlns：context =http://www.springframework.org/schema/context
xmlns：jee = http://www.springframework.org/schema/jeexmlns：lang =http://www.springframework.org/schema/lang
xmlns：tx =http：//www.springframework。 org / schema / txxmlns：util =http://www.springframework.org/schema/util
xsi：schemaLocation =http://www.springframework.org/schema/beans http：/ /www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring -aop-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/jee http://www.springframework.org/schema/jee/spring-jee-3.0.xsd
http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang-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/util http://www.springframework.org/schema /util/spring-util-3.0.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
default-autowire =byName>
< context：component-scan base-package =org.albertkam/>
< context：annotation-config />
< tx：annotation-driven />
< / beans>
我的web.xml
<？xml version =1.0encoding =UTF-8？>
< web-app version =2.5xmlns =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>
< display-name> albert simpleWebapp< / display-name>
< context-param>
< param-name> contextConfigLocation< / param-name>
< param-value>
/WEB-INF/applicationContext.xml
/WEB-INF/datasourceContext.xml
< / param-value>
< / context-param>
< listener>
< listener-class> org.springframework.web.context.ContextLoaderListener< / listener-class>
< / listener>
< servlet>
< servlet-name> facesServlet< / servlet-name>
< servlet-class> javax.faces.webapp.FacesServlet< / servlet-class>
< / servlet>
< servlet-mapping>
< servlet-name> facesServlet< / servlet-name>
< url-pattern> / faces / *< / url-pattern>
< / servlet-mapping>
< welcome-file-list>
< welcome-file> faces / index.xhtml< / welcome-file>
< / welcome-file-list>
< context-param>
< param-name> javax.faces.PROJECT_STAGE< / param-name>
< param-value>开发< / param-value>
< / context-param>
< / web-app>
我的faces-config.xml，虽然这里没有任何相关内容..
<？xml version =1.0encoding =UTF-8？>
< faces-config
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-facesconfig_2_0.xsd
version =2.0>
< application>
< locale-config> < / default-locale>中的
< default-locale>
< supported-locale> zh< / supported-locale>
< / locale-config>
< resource-bundle>
< base-name> org.albertkam.common.messages< / base-name>
< var> msgs< / var>
< / resource-bundle>
< resource-bundle>
< base-name> org.albertkam.common.errors< / base-name>
< var> errs< / var>
< / resource-bundle>
<！ - < message-bundle> id.co.sofcograha.override_messages< / message-bundle> - >
< / application>
< factory>
< exception-handler-factory> org.albertkam.common.BusinessExceptionHandlerFactory< / exception-handler-factory>
< / factory>
< / faces-config>
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？ / p>
请分享您的经验..
谢谢！
***********添加了一些新的实验结果****************
<刚刚我尝试使用@Named替换@ManagedBean和@Inject来替换@Autowired，但它确实有效，但我还是不明白原因。
所以这里是修改后的托管bean：
@Named（userBean）
@RequestScoped
公共类LoginBean {
private MstUser entityMstUser;
@Inject
private UserService userService;
@PostConstruct
private void init（）{
this.entityMstUser = new MstUser（）;
}
这很有效，服务对象被注入，尽管userService由Spring管理？这怎么可能？
这里还有一些我在路上添加的东西..
我添加了这个在web.xml中
< listener>
< listener-class> org.springframework.web.context.request.RequestContextListener< / listener-class>
< / listener>
< listener>
< listener-class> org.jboss.weld.environment.servlet.Listener< / listener-class>
< / listener>
我还添加了一个空的WEB-INF / beans.xml
这是在faces-config.xml内部
org.springframework.web.jsf.el.SpringBeanFacesELResolver
我有点担心这里使用@Named，因为我有一个糟糕的体验与ViewScoped一起使用它。当我让@ManagedBean能够通过spring框架注入服务对象时，我会感觉更安全。
我想知道你们通常做什么来连接ManagedBean与您的业务服务对象..使用CDI，纯Spring，或他们的组合？
解决方案
faces-config.xml中缺少变量解析器
< application>
< variable-resolver>
org.springframework.web.jsf.DelegatingVariableResolver
< / variable-resolver>
< / application>
缺少 web.xml中的RequestContextListener侦听器
< listener>
< listener-class>
org.springframework.web.context.request.RequestContextListener
< / listener-class>
< / listener>
I have tested this, trying to inject an service object to a @ManagedBean, but it failed with a nullpointerexception, being the userService is null.
I am currently using Tomcat 7, JSF 2, and here are some of my pom.xml
<properties>
<java-version>1.6</java-version>
<org.springframework-version>3.0.3.RELEASE</org.springframework-version>
<org.hibernate-version>3.6.0.Final</org.hibernate-version>
....
</properties>
Here is the exception trace :
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
Here's my ManagedBean :
@ManagedBean
@RequestScoped
public class LoginBean {
private MstUser entityMstUser;
@Autowired
private UserService userService;
@PostConstruct
private void init() {
this.entityMstUser = new MstUser();
}
And here's my service bean ..
@Service
public class UserService {
@Autowired
private UserDAO userDao;
public void login(MstUser entityMstUser) {
And here's my 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:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:jee="http://www.springframework.org/schema/jee" xmlns:lang="http://www.springframework.org/schema/lang"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:util="http://www.springframework.org/schema/util"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-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/jee http://www.springframework.org/schema/jee/spring-jee-3.0.xsd
http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang-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/util http://www.springframework.org/schema/util/spring-util-3.0.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd"
default-autowire="byName">
<context:component-scan base-package="org.albertkam" />
<context:annotation-config />
<tx:annotation-driven />
</beans>
And my 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">
<display-name>albert simpleWebapp</display-name>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/applicationContext.xml
/WEB-INF/datasourceContext.xml
</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>facesServlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>facesServlet</servlet-name>
<url-pattern>/faces/*</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>faces/index.xhtml</welcome-file>
</welcome-file-list>
<context-param>
<param-name>javax.faces.PROJECT_STAGE</param-name>
<param-value>Development</param-value>
</context-param>
</web-app>
And my faces-config.xml, although there's really nothing related in here ..
<?xml version="1.0" encoding="UTF-8"?>
<faces-config
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-facesconfig_2_0.xsd"
version="2.0">
<application>
<locale-config>
<default-locale>in</default-locale>
<supported-locale>en</supported-locale>
</locale-config>
<resource-bundle>
<base-name>org.albertkam.common.messages</base-name>
<var>msgs</var>
</resource-bundle>
<resource-bundle>
<base-name>org.albertkam.common.errors</base-name>
<var>errs</var>
</resource-bundle>
<!-- <message-bundle>id.co.sofcograha.override_messages</message-bundle> -->
</application>
<factory>
<exception-handler-factory>org.albertkam.common.BusinessExceptionHandlerFactory</exception-handler-factory>
</factory>
</faces-config>
I wonder if it's possible to do such thing, injecting a Spring managed bean to a @ManagedBean ?
Please share your experience in this ..
Thank you !
*********** added some new experiment results ****************
<listener>
<listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
</listener>
<listener>
<listener-class>org.jboss.weld.environment.servlet.Listener</listener-class>
</listener>Hello,
I have tested this, trying to inject an service object to a @ManagedBean, but it failed with a nullpointerexception, being the userService is null.
I am currently using Tomcat 7, JSF 2, and here are some of my pom.xml
<properties>
<java-version>1.6</java-version>
<org.springframework-version>3.0.3.RELEASE</org.springframework-version>
<org.hibernate-version>3.6.0.Final</org.hibernate-version>
....
</properties>
Here is the exception trace :
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
Here's my ManagedBean :
@ManagedBean
@RequestScoped
public class LoginBean {
private MstUser entityMstUser;
@Autowired
private UserService userService;
@PostConstruct
private void init() {
this.entityMstUser = new MstUser();
}
And here's my service bean ..
@Service
public class UserService {
@Autowired
private UserDAO userDao;
public void login(MstUser entityMstUser) {
And here's my 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:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:jee="http://www.springframework.org/schema/jee" xmlns:lang="http://www.springframework.org/schema/lang"
xmlns:tx="http://www.springframework.org/schema/tx" xmlns:util="http://www.springframework.org/schema/util"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-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/jee http://www.springframework.org/schema/jee/spring-jee-3.0.xsd
http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang-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/util http://www.springframework.org/schema/util/spring-util-3.0.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd"
default-autowire="byName">
<context:component-scan base-package="org.albertkam" />
<context:annotation-config />
<tx:annotation-driven />
</beans>
And my 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">
<display-name>albert simpleWebapp</display-name>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/applicationContext.xml
/WEB-INF/datasourceContext.xml
</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>facesServlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>facesServlet</servlet-name>
<url-pattern>/faces/*</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>faces/index.xhtml</welcome-file>
</welcome-file-list>
<context-param>
<param-name>javax.faces.PROJECT_STAGE</param-name>
<param-value>Development</param-value>
</context-param>
</web-app>
And my faces-config.xml, although there's really nothing related in here ..
<?xml version="1.0" encoding="UTF-8"?>
<faces-config
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-facesconfig_2_0.xsd"
version="2.0">
<application>
<locale-config>
<default-locale>in</default-locale>
<supported-locale>en</supported-locale>
</locale-config>
<resource-bundle>
<base-name>org.albertkam.common.messages</base-name>
<var>msgs</var>
</resource-bundle>
<resource-bundle>
<base-name>org.albertkam.common.errors</base-name>
<var>errs</var>
</resource-bundle>
<!-- <message-bundle>id.co.sofcograha.override_messages</message-bundle> -->
</application>
<factory>
<exception-handler-factory>org.albertkam.common.BusinessExceptionHandlerFactory</exception-handler-factory>
</factory>
</faces-config>
I wonder if it's possible to do such thing, injecting a Spring managed bean to a @ManagedBean ?
Please share your experience in this ..
Thank you !
*********** added some new experiment results ****************
Just now i tried using @Named to replace @ManagedBean and @Inject to replace @Autowired, and it worked, although i still dont really understand the reason why.
So here's the modifed managed bean :
@Named("userBean")
@RequestScoped
public class LoginBean {
private MstUser entityMstUser;
@Inject
private UserService userService;
@PostConstruct
private void init() {
this.entityMstUser = new MstUser();
}
This works, the service object got injected, although the userService is managed by Spring ? How is that possible ?
Here's some additional things that i add along the way ..
I added this in the web.xml
<listener>
<listener-class>org.springframework.web.context.request.RequestContextListener</listener-class>
</listener>
<listener>
<listener-class>org.jboss.weld.environment.servlet.Listener</listener-class>
</listener>
I also added an empty WEB-INF/beans.xml
And this inside the faces-config.xml org.springframework.web.jsf.el.SpringBeanFacesELResolver
Im a bit concerned here with using the @Named, because i've had a bad experience using it along with ViewScoped. I'd feel alot safer when i have @ManagedBean being able to be injected with service objects by the spring framework.
I wonder what you guys usually do to connect the ManagedBean with your business service objects .. using CDI, or pure Spring, or the combination of them ?
解决方案
missing variable resolver in faces-config.xml
<application>
<variable-resolver>
org.springframework.web.jsf.DelegatingVariableResolver
</variable-resolver>
</application>
missing RequestContextListener listener in web.xml
<listener>
<listener-class>
org.springframework.web.context.request.RequestContextListener
</listener-class>
</listener>
这篇关于JSF2：从Spring向managedbean注入服务对象？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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