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任何人都可以引導我使用jsf使用jsf4birt在平臺websphere/tomcat上使用BIRT生成的圖表嗎?使用birt,jsf和jsf4birt生成報表和生成圖表
我已經完成了http://exadel.org/jsf4birt-docs網站中提到的每件事情。
不過還是我得到以下異常:
SEVERE: JSF1054: (Phase ID: RENDER_RESPONSE 6, View ID: /workpages/pageb.jsp) Exception thrown during phase execution: javax.faces.event.PhaseEvent[[email protected]]
Apr 18, 2012 8:04:16 PM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet Faces Servlet threw exception
java.lang.NullPointerException
at org.eclipse.birt.report.engine.api.impl.ReportEngine$EngineExtensionManager.<init>(ReportEngine.java:819)
at org.eclipse.birt.report.engine.api.impl.ReportEngine.<init>(ReportEngine.java:111)
at org.eclipse.birt.report.engine.api.impl.ReportEngineFactory$1.run(ReportEngineFactory.java:18)
at org.eclipse.birt.report.engine.api.impl.ReportEngineFactory$1.run(ReportEngineFactory.java:1)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.birt.report.engine.api.impl.ReportEngineFactory.createReportEngine(ReportEngineFactory.java:14)
at com.exadel.jsfbirt.engine.BirtEngine.getBirtEngine(BirtEngine.java:80)
at com.exadel.jsfbirt.engine.BirtRendererUtils.renderBirt(BirtRendererUtils.java:134)
at com.exadel.jsfbirt.renderkit.html.BirtWrapperRenderer.doEncodeBegin(BirtWrapperRenderer.java:162)
at com.exadel.jsfbirt.renderkit.html.BirtWrapperRenderer.encodeBegin(BirtWrapperRenderer.java:127)
at javax.faces.component.UIComponentBase.encodeBegin(UIComponentBase.java:813)
at javax.faces.component.UIComponent.encodeAll(UIComponent.java:928)
at javax.faces.render.Renderer.encodeChildren(Renderer.java:148)
而且想知道以下的含義上下文PARAMS那些被添加到被添加到web.xml按照網站鏈接:
<context-param>
<param-name>actuate.serverUrl</param-name>
<param-value>http://localhost:8900/iportal</param-value>
</context-param>
<context-param>
<param-name>actuate.serverLogin</param-name>
<param-value>administrator</param-value>
</context-param>
<context-param>
<param-name>actuate.serverPassword</param-name>
<param-value></param-value>
</context-param>