error reading Error reading 'userName' on type org.jboss.seam.example.User
I am trying to learn seam. I have gone through the Seam Documentation 2.2.0.GA (Not entirely).
I am a maven person and have the following.
pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>bbseam</groupId> <artifactId>bbseam</artifactId> <packaging>war</packaging> <version>1.0</version> <name>bbseam JEE5 Webapp</name> <url>http://maven.apache.org</url> <dependencies> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>2.5</version> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet.jsp</groupId> <artifactId>jsp-api</artifactId> <version>2.1</version> <scope>provided</scope> </dependency> <dependency> <groupId>org.testng</groupId> <artifactId>testng</artifactId> <version>5.9</version> <scope>test</scope> </dependency> <dependency> <groupId>javax.faces</groupId> <artifactId>jsf-api</artifactId> <version>1.2</version> </dependency> <dependency> <groupId>javax.faces</groupId> <artifactId>jsf-impl</artifactId> <version>1.2</version> </dependency> <dependency> <groupId>com.sun.facelets</groupId> <artifactId>jsf-facelets</artifactId> <version>1.1.15.B1</version> </dependency> <dependency> <groupId>org.jboss.seam</groupId> <artifactId>jboss-seam</artifactId> <version>2.2.0.GA</version> <exclusions> <exclusion> <groupId>javax.el</groupId> <artifactId>el-api</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>org.jboss.seam</groupId> <artifactId>jboss-seam-ui</artifactId> <version>2.2.0.GA</version> <exclusions> <exclusion> <groupId>javax.el</groupId> <artifactId>el-api</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-entitymanager</artifactId> <version>3.4.0.GA</version> <exclusions> <exclusion> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-validator</artifactId> <version>3.1.0.GA</version> <exclusions> <exclusion> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> </exclusion> </exclusions> </dependency> <dependency> <groupId>javassist</groupId> <artifactId>javassist</artifactId> <version>3.8.0.GA</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-jdk14</artifactId> <version>1.5.8</version> </dependency> <dependency> <groupId>org.jboss</groupId> <artifactId>jboss-common-core</artifactId> <version>2.2.17.GA</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>2.0.2</version> <configuration> <source>1.5</source> <target>1.5</target> </configuration> </plugin> </plugins> <finalName>bbseam</finalName> </build> </project>
Files in My Project
C:. │ bbseam.iml │ bbseam.ipr │ bbseam.iws │ pom.xml │ └───src ├───main │ ├───java │ │ └───org │ │ └───jboss │ │ └───seam │ │ └───example │ │ User.java │ │ UserAction.java │ │ │ ├───resources │ │ │ log4j.xml │ │ │ seam.properties │ │ │ │ │ └───META-INF │ │ persistence.xml │ │ │ └───webapp │ │ already.xhtml │ │ hello.xhtml │ │ index.xhtml │ │ │ ├───META-INF │ │ context.xml │ │ MANIFEST.MF │ │ │ └───WEB-INF │ components.xml │ faces-config.xml │ web.xml │ └───test └───java └───bbseam
Exception I am getting.
javax.faces.FacesException: javax.el.ELException: /index.xhtml @16,62 value="#{user.userName}": Error reading 'userName' on type org.jboss.seam.example.User
at javax.faces.component.UIOutput.getValue(UIOutput.java:179)
at com.sun.faces.renderkit.html_basic.HtmlBasicInputRenderer.getValue(HtmlBasicInputRenderer.java:100)
at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.getCurrentValue(HtmlBasicRenderer.java:282)
at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeEnd(HtmlBasicRenderer.java:208)
at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:847)
at com.sun.faces.renderkit.html_basic.HtmlBasicRenderer.encodeRecursive(HtmlBasicRenderer.java:241)
at com.sun.faces.renderkit.html_basic.GridRenderer.encodeChildren(GridRenderer.java:270)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:827)
at org.jboss.seam.ui.util.cdk.RendererBase.renderChild(RendererBase.java:186)
at org.jboss.seam.ui.util.cdk.RendererBase.renderChildren(RendererBase.java:166)
at org.jboss.seam.ui.renderkit.ValidateAllRendererBase.doEncodeChildren(ValidateAllRendererBase.java:33)
at org.jboss.seam.ui.util.cdk.RendererBase.encodeChildren(RendererBase.java:92)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:827)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:883)
at javax.faces.render.Renderer.encodeChildren(Renderer.java:137)
at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:827)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:883)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:889)
at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:592)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:108)
at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:266)
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:159)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
at org.jboss.seam.web.IdentityFilter.doFilter(IdentityFilter.java:40)
at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:90)
at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:45)
at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:619)
Caused by: javax.el.ELException: /index.xhtml @16,62 value="#{user.userName}": Error reading 'userName' on type org.jboss.seam.example.User
at com.sun.facelets.el.TagValueExpression.getValue(TagValueExpression.java:76)
at javax.faces.component.UIOutput.getValue(UIOutput.java:176)
... 46 more
Caused by: java.lang.NullPointerException
at org.jboss.seam.example.User.getUserName(User.java:30)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at javax.el.BeanELResolver.getValue(BeanELResolver.java:62)
at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:53)
at com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:58)
at org.jboss.el.parser.AstPropertySuffix.getValue(AstPropertySuffix.java:53)
at org.jboss.el.parser.AstValue.getValue(AstValue.java:67)
at org.jboss.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:186)
at com.sun.facelets.el.TagValueExpression.getValue(TagValueExpression.java:71)
I can also see that User and the entityManager is there in the scoped variables
http://img153.imageshack.us/i/scopedvariables.jpg/
I would greatly appreciate a shove in the right direction.
Asif