[eclipse-dev] Save Failed:null error

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[eclipse-dev] Save Failed:null error

From: "Sanjeet" <sanjeetj@xxxxxxxxxxx>
Date: Fri, 17 Dec 2004 13:52:19 +0530
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Title: Untitled Document

Hi,

I am using Eclipse 3.0 with Lomboz 3.0 plugin.

I am trying to use a "DisplayTag" (A sourceforge project) in one of my JSPs. But as soon as I include the TLD declaration I get this error "Save Failed:null". I had created this project using 'Lomboz J2EE Project Wizard'.

Here is the JSP Code.

1: <%@ page contentType="text/html; charset=iso-8859-1" language="java"%>
2: <%@ taglib uri="http://jakarta.apache.org/struts/tags-html" prefix="html" %>
3: <%@ taglib uri="http://jakarta.apache.org/struts/tags-bean" prefix="bean" %>
4: <%@ taglib uri="http://jakarta.apache.org/struts/tags-logic" prefix="logic" %>
5: <%@ taglib uri="http://displaytag.sf.net" prefix="display" %>

6: <link rel="stylesheet" type="text/css" href=''>

7: <display:table name="products" export="true" defaultsort="1" defaultorder="descending" pagesize="10" requestURI="/listProducts.do">
8: <display:column property="productid" title="ID" sortable="true" headerClass="sortable"/>
9: <display:column property="name" sortable="true" headerClass="sortable"/>
10: </display:table>

If I remove line no 5 OR line nos 7,8,9,10 from above, then the file is saved successfuly. The stack trace (given below) says "ClassNotFound" for log4j but I have double checked the Build Path and it seems to be perfect (contains the log4j jar file) and my logging is working perfectly otherwise.

Surprisingly this error does not occur on any other PCs with same Eclipse, Lomboz and DisplayTag versions.

Please help me out.

Regards,

Sanjeet

The error log shows following trace

java.lang.ExceptionInInitializerError
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:140)
at org.displaytag.tags.TableTagBeanInfo.class$(TableTagBeanInfo.java:41)
at org.displaytag.tags.TableTagBeanInfo.getPropertyDescriptors(TableTagBeanInfo.java:40)
at java.beans.Introspector.getTargetPropertyInfo(Introspector.java:436)
at java.beans.Introspector.getBeanInfo(Introspector.java:372)
at java.beans.Introspector.getBeanInfo(Introspector.java:144)
at org.apache.jasper.compiler.Generator$TagHandlerInfo.<init>(Generator.java:3675)
at org.apache.jasper.compiler.Generator$GenerateVisitor.getTagHandlerInfo(Generator.java:2094)
at org.apache.jasper.compiler.Generator$GenerateVisitor.visit(Generator.java:1574)
at org.apache.jasper.compiler.Node$CustomTag.accept(Node.java:1494)
at org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2216)
at org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2273)
at org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2279)
at org.apache.jasper.compiler.Node$Root.accept(Node.java:493)
at org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2216)
at org.apache.jasper.compiler.Generator.generate(Generator.java:3262)
at com.objectlearn.jasper.LombozJspC.parseInternal(LombozJspC.java:219)
at com.objectlearn.jasper.LombozJspC.parse(LombozJspC.java:124)
at com.objectlearn.jdt.j2ee.core.WebModule.internalParseJSP(WebModule.java:274)
at com.objectlearn.jdt.j2ee.core.WebModule.forceParseJSP(WebModule.java:255)
at com.objectlearn.jdt.j2ee.core.WebModule.parseJSP(WebModule.java:241)
at com.objectlearn.jdt.j2ee.core.Project.parseJSP(Project.java:747)
at com.objectlearn.jdt.j2ee.editor.JspEditor.parseDocument(JspEditor.java:264)
at com.objectlearn.jdt.j2ee.editor.JspContentOutlinePage$ContentProvider.inputChanged(JspContentOutlinePage.java:160)
at org.eclipse.jface.viewers.ContentViewer.setInput(ContentViewer.java:234)
at org.eclipse.jface.viewers.StructuredViewer.setInput(StructuredViewer.java:1059)
at com.objectlearn.jdt.j2ee.editor.JspContentOutlinePage.setViewerInput(JspContentOutlinePage.java:319)
at com.objectlearn.jdt.j2ee.editor.JspContentOutlinePage.setInput(JspContentOutlinePage.java:293)
at com.objectlearn.jdt.j2ee.editor.JspEditor.doSave(JspEditor.java:178)
at org.eclipse.ui.internal.EditorManager$12.run(EditorManager.java:1160)
at org.eclipse.ui.internal.EditorManager$10.run(EditorManager.java:1015)
at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:303)
at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:253)
at org.eclipse.jface.window.ApplicationWindow$1.run(ApplicationWindow.java:588)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:69)
at org.eclipse.jface.window.ApplicationWindow.run(ApplicationWindow.java:585)
at org.eclipse.ui.internal.WorkbenchWindow.run(WorkbenchWindow.java:1653)
at org.eclipse.ui.internal.EditorManager.runProgressMonitorOperation(EditorManager.java:1021)
at org.eclipse.ui.internal.EditorManager.savePart(EditorManager.java:1165)
at org.eclipse.ui.internal.WorkbenchPage.savePart(WorkbenchPage.java:2539)
at org.eclipse.ui.internal.WorkbenchPage.saveEditor(WorkbenchPage.java:2551)
at org.eclipse.ui.internal.SaveAction.run(SaveAction.java:69)
at org.eclipse.jface.action.Action.runWithEvent(Action.java:881)
at org.eclipse.ui.commands.ActionHandler.execute(ActionHandler.java:141)
at org.eclipse.ui.internal.commands.Command.execute(Command.java:132)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard.executeCommand(WorkbenchKeyboard.java:471)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard.press(WorkbenchKeyboard.java:889)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard.processKeyEvent(WorkbenchKeyboard.java:930)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard.filterKeySequenceBindings(WorkbenchKeyboard.java:548)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard.access$2(WorkbenchKeyboard.java:496)
at org.eclipse.ui.internal.keys.WorkbenchKeyboard$1.handleEvent(WorkbenchKeyboard.java:261)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:82)
at org.eclipse.swt.widgets.Display.filterEvent(Display.java:740)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:795)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:820)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:805)
at org.eclipse.swt.widgets.Control.sendKeyEvent(Control.java:1734)
at org.eclipse.swt.widgets.Control.sendKeyEvent(Control.java:1730)
at org.eclipse.swt.widgets.Control.WM_CHAR(Control.java:3067)
at org.eclipse.swt.widgets.Control.windowProc(Control.java:2970)
at org.eclipse.swt.widgets.Display.windowProc(Display.java:3338)
at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method)
at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:1467)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2429)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1377)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1348)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:254)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:141)
at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:96)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:335)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:273)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:129)
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:324)
at org.eclipse.core.launcher.Main.basicRun(Main.java:183)
at org.eclipse.core.launcher.Main.run(Main.java:644)
at org.eclipse.core.launcher.Main.main(Main.java:628)
Caused by: org.apache.commons.logging.LogConfigurationException: org.apache.commons.logging.LogConfigurationException: No suitable Log constructor [Ljava.lang.Class;@1e6cf07 for org.apache.commons.logging.impl.Log4JLogger
at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:532)
at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:272)
at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:246)
at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:395)
at org.displaytag.tags.TableTag.<clinit>(TableTag.java:103)
... 80 more
Caused by: org.apache.commons.logging.LogConfigurationException: No suitable Log constructor [Ljava.lang.Class;@1e6cf07 for org.apache.commons.logging.impl.Log4JLogger
at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:432)
at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:525)
... 84 more
Caused by: java.lang.NoClassDefFoundError: org/apache/log4j/Logger
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Class.java:1590)
at java.lang.Class.getConstructor0(Class.java:1762)
at java.lang.Class.getConstructor(Class.java:1002)
at org.apache.commons.logging.impl.LogFactoryImpl.getLogConstructor(LogFactoryImpl.java:429)
... 85 more

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