jad

今天在理解struts的表单验证的时候～～～～需要查看DynaValidatorForm的源文件～～但是myeclipse没有加入jad直接查看class文件～～google了～～整出来了～～心情不错～～～发在这里～～方便下次安装～～～～
具体操作步骤：

下载反编译工具jad

下载地址：http://www.kpdus.com/jad.html#download，根据相对操作界面的版本进行下载，因为我们的操作界面是window所以下载：jad 1.5.8 for Window 9x/NT/2000即可。

将下载下来的jadnt158.zip解压缩，将jad.exe文件放入%JAVA_HOME%\bin文件目录下。

下载eclipse反编译插件jadclipse

下载地址：http://sourceforge.net/projects/jadclipse/，根据eclipse的版本进行下载，这里注意了，不是MyEclipse的版本，我们用的MyEclipse5.1是自动装载eclipse，而它的版本可以在help中查看，在这里它的版本为 eclipse3.2所以我们就要下载jadclipse3.2
因为是jadclipse3.2的版本，所以可直接将net.sf.jadclipse_3.2.4.jar复制到%eclipse_home%\plugins下，而这里我们的目录为C:\Program Files\MyEclipse Enterprise Workbench 5.1.0 GA\eclipse\plugins下

重启eclipse

配制jadclipse

Window/Preferences/java/jadClipse中的Path to decomiler设置为jad.exe的决对路径，刚才我们给它放到了我们jdk的bin中，为C:\j2sdk1.4.2\bin\jad.exe。 Directory for temporary files设置为存放临时文件的决对路径这里我把它设置到桌面上了C:\Documents and Settings\LuckyStar\桌面\.net.sf.jadclipse

General/Editors/File Associations中把*.class的Associated Editors设置为JadClipse Class File Viewer为默认。如果没有jadclipse则说明net.sf.jadclipse_3.2.4.ja没有复制到正确的位置

可以试一下双击class文件，看能否反编译成java代码了



注：

jad是命令行式的反编译程序，将class文件反编译java操作的工具，在命令行中执行操作，如下说明几个简单的反编译操作：

将当前文件夹下的abc.class文件反编译成abc.jad文件

       D：\jad>jad abc.class

将当前文件夹下的abc.class文件反编译成abc.java文件

              D：\jad>jad -sjava abc.class

可以单独使用。Jadclipse是eclipse中的一个插件，是用于在eclipse中双击*.class文件时直接查它的*.java代码，不可以单独使用。
如果出现下面的错误～～请再点击菜单栏上的JADCLIPSE~~

分析：

/*jadclipse*/

/*
DECOMPILATION REPORT

Decompiled from: E:\suntest\jspbook\WEB-INF\classes\com\guestbook//MD5.class
Total time: 15 ms
Jad reported messages/errors:
Exit status: 0
Caught exceptions:
java.io.IOException: CreateProcess: jad -p -t4 -lradix10 -radix10 MD5.class error=2
at java.lang.ProcessImpl.create(Native Method)
at java.lang.ProcessImpl.<init>(Unknown Source)
at java.lang.ProcessImpl.start(Unknown Source)
at java.lang.ProcessBuilder.start(Unknown Source)
at java.lang.Runtime.exec(Unknown Source)
at net.sf.jadclipse.JadDecompiler.decompile(JadDecompiler.java:160)
at net.sf.jadclipse.JadclipseSourceMapper.findSource(JadclipseSourceMapper.java:158)
at net.sf.jadclipse.JadclipseSourceMapper.findSource(JadclipseSourceMapper.java:83)
at net.sf.jadclipse.JadclipseClassFileEditor.doOpenBuffer(JadclipseClassFileEditor.java:87)
at net.sf.jadclipse.JadclipseClassFileEditor.doSetInput(JadclipseClassFileEditor.java:45)
at net.sf.jadclipse.JadclipseActionBarContributor.setActiveEditor(JadclipseActionBarContributor.java:87)
at org.eclipse.ui.internal.EditorActionBars.partChanged(EditorActionBars.java:335)
at org.eclipse.ui.internal.WorkbenchPage$3.run(WorkbenchPage.java:628)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
at org.eclipse.core.runtime.Platform.run(Platform.java:880)
at org.eclipse.ui.internal.WorkbenchPage.activatePart(WorkbenchPage.java:617)
at org.eclipse.ui.internal.WorkbenchPage.setActivePart(WorkbenchPage.java:3487)
at org.eclipse.ui.internal.WorkbenchPage.activate(WorkbenchPage.java:610)
at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2832)
at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2729)
at org.eclipse.ui.internal.WorkbenchPage.access$11(WorkbenchPage.java:2721)
at org.eclipse.ui.internal.WorkbenchPage$10.run(WorkbenchPage.java:2673)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2668)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2652)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2643)
at org.eclipse.ui.ide.IDE.openEditor(IDE.java:646)
at org.eclipse.ui.ide.IDE.openEditor(IDE.java:605)
at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:318)
at org.eclipse.jdt.internal.ui.javaeditor.EditorUtility.openInEditor(EditorUtility.java:160)
at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:228)
at org.eclipse.jdt.ui.actions.OpenAction.run(OpenAction.java:207)
at org.eclipse.jdt.ui.actions.SelectionDispatchAction.dispatchRun(SelectionDispatchAction.java:274)
at org.eclipse.jdt.ui.actions.SelectionDispatchAction.run(SelectionDispatchAction.java:250)
at org.eclipse.jdt.internal.ui.navigator.OpenAndExpand.run(OpenAndExpand.java:50)
at org.eclipse.ui.actions.RetargetAction.run(RetargetAction.java:221)
at org.eclipse.ui.internal.navigator.CommonNavigatorManager$3.open(CommonNavigatorManager.java:184)
at org.eclipse.jface.viewers.StructuredViewer$2.run(StructuredViewer.java:820)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
at org.eclipse.core.runtime.Platform.run(Platform.java:880)
at org.eclipse.ui.internal.JFaceUtil$1.run(JFaceUtil.java:48)
at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:175)
at org.eclipse.jface.viewers.StructuredViewer.fireOpen(StructuredViewer.java:818)
at org.eclipse.jface.viewers.StructuredViewer.handleOpen(StructuredViewer.java:1079)
at org.eclipse.ui.navigator.CommonViewer.handleOpen(CommonViewer.java:372)
at org.eclipse.jface.viewers.StructuredViewer$6.handleOpen(StructuredViewer.java:1183)
at org.eclipse.jface.util.OpenStrategy.fireOpenEvent(OpenStrategy.java:263)
at org.eclipse.jface.util.OpenStrategy.access$2(OpenStrategy.java:257)
at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:297)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1003)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3823)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3422)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2382)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2346)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2198)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:493)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:288)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:488)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:193)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:382)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:549)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504)
at org.eclipse.equinox.launcher.Main.run(Main.java:1236)