如何从 Eclipse 插件 link Z3 构建，为 Java 编译？
How to link Z3 build, Compiled for Java, from Eclipse Plugin?
我有一个完美运行的 Z3 构建系统 Java。我想从 Eclipse 插件中调用它。我尝试了几种方法，但没有一种对我有用。这些方法是：
- 将 Z3 版本添加为外部 class 文件夹
How to Use External Class Files in an Eclipse Project
Exception in thread "main" java.lang.UnsatisfiedLinkError: no
libz3java in java.library.path at
java.lang.ClassLoader.loadLibrary(ClassLoader.java:1867) at
java.lang.Runtime.loadLibrary0(Runtime.java:870) at
java.lang.System.loadLibrary(System.java:1122) at
com.microsoft.z3.Native.(Native.java:14) at
com.microsoft.z3.Global.ToggleWarningMessages(Global.java:87) at
TestZ3.main(TestZ3.java:9)
- 已将 Z3 构建复制到根目录下的 Eclipse 插件。然后在Libraries下添加com.microsoft.z3.jar（右键点击project->Build Path->Configure Build Path->Libraries->Add Jars）。错误是：
java.lang.UnsatisfiedLinkError: no libz3java in java.library.path at
java.lang.ClassLoader.loadLibrary(ClassLoader.java:1867) at
java.lang.Runtime.loadLibrary0(Runtime.java:870) at
java.lang.System.loadLibrary(System.java:1122) at
com.microsoft.z3.Native.(Native.java:14) at
com.microsoft.z3.Global.ToggleWarningMessages(Global.java:87) at
plugintest.handlers.SampleHandler.execute(SampleHandler.java:37) at
org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:295)
at
org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:90)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498) at
org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:56)
at
org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:252)
at
org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:234)
at
org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:132)
at
org.eclipse.e4.core.commands.internal.HandlerServiceHandler.execute(HandlerServiceHandler.java:152)
at
org.eclipse.core.commands.Command.executeWithChecks(Command.java:493)
at
org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:486)
at
org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:210)
at
org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.executeItem(HandledContributionItem.java:799)
at
org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.handleWidgetSelection(HandledContributionItem.java:675)
at
org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.access(HandledContributionItem.java:659)
at
org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.handleEvent(HandledContributionItem.java:592)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4362) at
org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1113) at
org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4180)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3769)
at
org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1127)
at
org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
at
org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1018)
at
org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:156)
at org.eclipse.ui.internal.Workbench.run(Workbench.java:694) at
org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)
at
org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:606)
at
org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)
at
org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:139)
at
org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
at
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)
at
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498) at
org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:669) at
org.eclipse.equinox.launcher.Main.basicRun(Main.java:608) at
org.eclipse.equinox.launcher.Main.run(Main.java:1515) at
org.eclipse.equinox.launcher.Main.main(Main.java:1488)
- 无论有没有上一步，我都将 com.microsoft.z3.jar 添加到位于 Plugin.xml 运行时选项卡的类路径中。在这种情况下，插件找不到在按下按钮命令后调用的处理程序。
!MESSAGE plugintest.handlers.SampleHandler cannot be found by
PluginTest_1.0.0.qualifier !STACK 0 java.lang.ClassNotFoundException:
plugintest.handlers.SampleHandler cannot be found by ....more
事实上，这种方法对我以前的安装（Dell、Intel、x64、Eclipse Mars (x64)、Java 1.8 x64）有效！
- 根据 https://github.com/Z3Prover/z3/issues/1093 中的讨论，我使用 Z3 Build 目录配置了 com.microsoft.z3.jar 的本地库位置。从 Eclipse 插件调用 Z3 Build，报错与方法 2 相同，但从 Java 应用程序调用，报错更具体：
Exception in thread "main" java.lang.UnsatisfiedLinkError:
C:\Users...TestZ33\build\libz3java.dll: Can't find dependent libraries
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1941)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1857)
at java.lang.Runtime.loadLibrary0(Runtime.java:870)
at java.lang.System.loadLibrary(System.java:1122)
at com.microsoft.z3.Native.(Native.java:14)
at com.microsoft.z3.Global.ToggleWarningMessages(Global.java:87)
at TestZ3.main(TestZ3.java:9)
当您在 Z3 构建目录下有一个 Java 应用程序时，工作正常。任何人都可以帮助如何从 Java 应用程序或 Eclipse 插件使用 Z3 构建目录。顺便说一句，我遵循了方法 #2，在我尝试复制它（因为我的笔记本电脑崩溃了）并被迫使用另一台笔记本电脑之前一直工作正常，然后相同的过程对我不起作用（我之前很幸运）。现在，新笔记本电脑具有以下设置：
HP Laptop (AMD, x64)
C:\Users\nmd02\git\resa_mars_workspace>java -version
java version "1.8.0_144"
Java(TM) SE Runtime Environment (build 1.8.0_144-b01)
Java HotSpot(TM) 64-Bit Server VM (build 25.144-b01, mixed mode)
路径：
%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;%SYSTEMROOT%\System32\WindowsPowerShell\v1.0\;C:\Program
Files (x86)\QuickTime\QTSystem\;C:\Program
Files\MATLAB17a\runtime\win64;C:\Program
Files\Java\jdk1.8.0_144\bin;C:\Program Files\Git\cmd;C:\Program
Files\CMake\bin;C:\MinGW\bin;C:\python36;C:\Users...git\ninja;C:\Program
Files (x86)\Windows Kits.1\Windows Performance
Toolkit\;C:\gnuwin32\bin
非常感谢您的提前帮助。
干杯，
/纳斯
在运行时，您的代码需要查找 com.microsoft.z3.jar、libz3.dll/.so/.dylib 和 libz3java.dll/.so/.dylib。 Java 处理第一个，但操作系统必须找到其他库，即，无论您的代码运行在什么环境中，都必须设置 PATH (Windows) 、LD_LIBRARY_PATH (Linux) 或 DYLD_LIBRARY_PATH (OSX) 指向库。另外，请确保您的 Z3 版本和 Java 版本均为 32 位或 64 位，否则您收到的错误消息可能不会提供很多信息。
对于 Java 的某些风格，向 JVM 提供 java.library.path 设置可能也是必要的或有帮助的。
我有一个完美运行的 Z3 构建系统 Java。我想从 Eclipse 插件中调用它。我尝试了几种方法，但没有一种对我有用。这些方法是：
- 将 Z3 版本添加为外部 class 文件夹 How to Use External Class Files in an Eclipse Project
Exception in thread "main" java.lang.UnsatisfiedLinkError: no libz3java in java.library.path at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1867) at java.lang.Runtime.loadLibrary0(Runtime.java:870) at java.lang.System.loadLibrary(System.java:1122) at com.microsoft.z3.Native.(Native.java:14) at com.microsoft.z3.Global.ToggleWarningMessages(Global.java:87) at TestZ3.main(TestZ3.java:9)
- 已将 Z3 构建复制到根目录下的 Eclipse 插件。然后在Libraries下添加com.microsoft.z3.jar（右键点击project->Build Path->Configure Build Path->Libraries->Add Jars）。错误是：
java.lang.UnsatisfiedLinkError: no libz3java in java.library.path at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1867) at java.lang.Runtime.loadLibrary0(Runtime.java:870) at java.lang.System.loadLibrary(System.java:1122) at com.microsoft.z3.Native.(Native.java:14) at com.microsoft.z3.Global.ToggleWarningMessages(Global.java:87) at plugintest.handlers.SampleHandler.execute(SampleHandler.java:37) at org.eclipse.ui.internal.handlers.HandlerProxy.execute(HandlerProxy.java:295) at org.eclipse.ui.internal.handlers.E4HandlerProxy.execute(E4HandlerProxy.java:90) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:56) at org.eclipse.e4.core.internal.di.InjectorImpl.invokeUsingClass(InjectorImpl.java:252) at org.eclipse.e4.core.internal.di.InjectorImpl.invoke(InjectorImpl.java:234) at org.eclipse.e4.core.contexts.ContextInjectionFactory.invoke(ContextInjectionFactory.java:132) at org.eclipse.e4.core.commands.internal.HandlerServiceHandler.execute(HandlerServiceHandler.java:152) at org.eclipse.core.commands.Command.executeWithChecks(Command.java:493) at org.eclipse.core.commands.ParameterizedCommand.executeWithChecks(ParameterizedCommand.java:486) at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.executeHandler(HandlerServiceImpl.java:210) at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.executeItem(HandledContributionItem.java:799) at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.handleWidgetSelection(HandledContributionItem.java:675) at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.access(HandledContributionItem.java:659) at org.eclipse.e4.ui.workbench.renderers.swt.HandledContributionItem.handleEvent(HandledContributionItem.java:592) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4362) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1113) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4180) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3769) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1127) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1018) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:156) at org.eclipse.ui.internal.Workbench.run(Workbench.java:694) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:606) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:139) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:669) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:608) at org.eclipse.equinox.launcher.Main.run(Main.java:1515) at org.eclipse.equinox.launcher.Main.main(Main.java:1488)
- 无论有没有上一步，我都将 com.microsoft.z3.jar 添加到位于 Plugin.xml 运行时选项卡的类路径中。在这种情况下，插件找不到在按下按钮命令后调用的处理程序。
!MESSAGE plugintest.handlers.SampleHandler cannot be found by PluginTest_1.0.0.qualifier !STACK 0 java.lang.ClassNotFoundException: plugintest.handlers.SampleHandler cannot be found by ....more
事实上，这种方法对我以前的安装（Dell、Intel、x64、Eclipse Mars (x64)、Java 1.8 x64）有效！
- 根据 https://github.com/Z3Prover/z3/issues/1093 中的讨论，我使用 Z3 Build 目录配置了 com.microsoft.z3.jar 的本地库位置。从 Eclipse 插件调用 Z3 Build，报错与方法 2 相同，但从 Java 应用程序调用，报错更具体：
Exception in thread "main" java.lang.UnsatisfiedLinkError: C:\Users...TestZ33\build\libz3java.dll: Can't find dependent libraries at java.lang.ClassLoader$NativeLibrary.load(Native Method) at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1941) at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1857) at java.lang.Runtime.loadLibrary0(Runtime.java:870) at java.lang.System.loadLibrary(System.java:1122) at com.microsoft.z3.Native.(Native.java:14) at com.microsoft.z3.Global.ToggleWarningMessages(Global.java:87) at TestZ3.main(TestZ3.java:9)
当您在 Z3 构建目录下有一个 Java 应用程序时，工作正常。任何人都可以帮助如何从 Java 应用程序或 Eclipse 插件使用 Z3 构建目录。顺便说一句，我遵循了方法 #2，在我尝试复制它（因为我的笔记本电脑崩溃了）并被迫使用另一台笔记本电脑之前一直工作正常，然后相同的过程对我不起作用（我之前很幸运）。现在，新笔记本电脑具有以下设置：
HP Laptop (AMD, x64)
C:\Users\nmd02\git\resa_mars_workspace>java -version
java version "1.8.0_144"
Java(TM) SE Runtime Environment (build 1.8.0_144-b01)
Java HotSpot(TM) 64-Bit Server VM (build 25.144-b01, mixed mode)
路径：
%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;%SYSTEMROOT%\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\QuickTime\QTSystem\;C:\Program Files\MATLAB17a\runtime\win64;C:\Program Files\Java\jdk1.8.0_144\bin;C:\Program Files\Git\cmd;C:\Program Files\CMake\bin;C:\MinGW\bin;C:\python36;C:\Users...git\ninja;C:\Program Files (x86)\Windows Kits.1\Windows Performance Toolkit\;C:\gnuwin32\bin
非常感谢您的提前帮助。
干杯， /纳斯
在运行时，您的代码需要查找 com.microsoft.z3.jar、libz3.dll/.so/.dylib 和 libz3java.dll/.so/.dylib。 Java 处理第一个，但操作系统必须找到其他库，即，无论您的代码运行在什么环境中，都必须设置 PATH (Windows) 、LD_LIBRARY_PATH (Linux) 或 DYLD_LIBRARY_PATH (OSX) 指向库。另外，请确保您的 Z3 版本和 Java 版本均为 32 位或 64 位，否则您收到的错误消息可能不会提供很多信息。
对于 Java 的某些风格，向 JVM 提供 java.library.path 设置可能也是必要的或有帮助的。