how to fix java.lang.UnsatisfiedLinkError: sun.tools.attach.BsdVirtualMachine.createAttachFile(Ljava/lang/String;)
how to fix java.lang.UnsatisfiedLinkError: sun.tools.attach.BsdVirtualMachine.createAttachFile(Ljava/lang/String;)
大家。
我试图执行“mvn clean test”来验证一个由“mvn archetype:generate”生成的简单 maven 项目。我只是想学习如何编写单元 test.But 我得到了一个例外，经过长时间的调试和尝试，我不知道如何继续，请给我一些建议。
因为我不知道哪里出了问题，所以我会尽量提供更多信息。
os:
mac os 11.2.3(big sur with m1 chip)
jdk:
openjdk version "1.8.0_282"
OpenJDK Runtime Environment (Zulu 8.52.0.23-CA-macos-aarch64) (build 1.8.0_282-b08)
OpenJDK 64-Bit Server VM (Zulu 8.52.0.23-CA-macos-aarch64) (build 25.282-b08, mixed mode)
maven:
apache-maven-3.8.1(我也试过3.6.3)
pom.xml:
<properties>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.jmockit</groupId>
<artifactId>jmockit</artifactId>
<version>1.36</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
</dependencies>
主要java代码：
package com.juexi.learning;
/**
* Hello world!
*
*/
public class App {
public int getId() {
return 333;
}
}
测试java代码：
package com.juexi.learning;
import org.junit.Assert;
import org.junit.Test;
import mockit.Mocked;
/**
* Unit test for simple App.
*/
public class AppTest {
@Mocked
App app;
@Test
public void testApp() {
Assert.assertSame(1, app.getId());
}
}
堆栈跟踪信息：
Running com.juexi.learning.AppTest
java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
at mockit.internal.startup.AgentLoader.getVirtualMachineImplementationFromEmbeddedOnes(AgentLoader.java:80)
at mockit.internal.startup.AgentLoader.loadAgent(AgentLoader.java:52)
at mockit.internal.startup.Startup.initializeIfPossible(Startup.java:147)
at org.junit.runner.Runner.<clinit>(Runner.java:22)
at org.junit.internal.builders.JUnit4Builder.runnerForClass(JUnit4Builder.java:10)
at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:26)
at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:33)
at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:250)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:141)
at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:112)
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.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:189)
at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:165)
at org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:85)
at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:115)
at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:75)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at mockit.internal.startup.AgentLoader.getVirtualMachineImplementationFromEmbeddedOnes(AgentLoader.java:76)
... 20 more
Caused by: java.lang.UnsatisfiedLinkError: sun.tools.attach.BsdVirtualMachine.createAttachFile(Ljava/lang/String;)V
at sun.tools.attach.BsdVirtualMachine.createAttachFile(Native Method)
at sun.tools.attach.BsdVirtualMachine.<init>(BsdVirtualMachine.java:74)
... 25 more
Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0.047 sec <<< FAILURE!
testApp(com.juexi.learning.AppTest) Time elapsed: 0.003 sec <<< ERROR!
java.lang.NullPointerException
at com.juexi.learning.AppTest.testApp(AppTest.java:17)
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.junit.runners.model.FrameworkMethod.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access[=15=]0(ParentRunner.java:58)
at org.junit.runners.ParentRunner.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:252)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:141)
at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:112)
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.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:189)
at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:165)
at org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:85)
at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:115)
at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:75)
Results :
Tests in error:
testApp(com.juexi.learning.AppTest)
我试过的：
我尝试调试并在 class BsdVirtualMachine.class
中得到了这个
public BsdVirtualMachine(AttachProvider provider, String vmid)
throws AttachNotSupportedException, IOException
{
super(provider, vmid);
// This provider only understands pids
int pid;
try {
pid = Integer.parseInt(vmid);
} catch (NumberFormatException x) {
throw new AttachNotSupportedException("Invalid process identifier");
}
// Find the socket file. If not found then we attempt to start the
// attach mechanism in the target VM by sending it a QUIT signal.
// Then we attempt to find the socket file again.
path = findSocketFile(pid);
if (path == null) {
File f = new File(tmpdir, ".attach_pid" + pid);
createAttachFile(f.getPath()); // this line is where the exception comes from
try {
sendQuitTo(pid);
....
并在 ClassLoader.class 中调用：
static long findNative(ClassLoader loader, String name) {
Vector<NativeLibrary> libs =
loader != null ? loader.nativeLibraries : systemNativeLibraries;
synchronized (libs) {
int size = libs.size();
for (int i = 0; i < size; i++) {
NativeLibrary lib = libs.elementAt(i);
long entry = lib.find(name);
if (entry != 0)
return entry;
}
}
return 0;
}
似乎本地方法 createAttachFile(String path) 试图创建一个文件，并且 ClassLoader 试图从本地加载此本地方法，但在 /Library/Java/JavaVirtualMachines/zulu-8 中找不到此方法。jdk/Contents/Home/jre/lib/libattach.dylib（我通过调试找到这个）。
那么，我该怎么做才能解决这个问题？我不知道该怎么做next.could有人帮我吗？
这看起来类似于 https://github.com/raphw/byte-buddy/issues/1001。请仔细检查应用程序类路径
中是否有任何不同的tools.jar
在@Mells 的帮助下，我post将这个问题发给了 jmockit 的开发者。更多信息请查看github
而且，开发人员告诉我，这是因为 zulujdk8 删除了本地方法。
-JNIEXPORT void JNICALL Java_sun_tools_attach_VirtualMachineImpl_createAttachFile(JNIEnv *env, jclass cls, jstring path)
+JNIEXPORT void JNICALL Java_sun_tools_attach_VirtualMachineImpl_createAttachFile0(JNIEnv *env, jclass cls, jstring path)
我解决了这个问题。
jUnit 编译和构建选择：/Library/Java/JavaVirtualMachines/zulu-8.jdk/Contents/Home（这是您的 java_home 路径）而不是其他版本。
并且 运行，有效！！！
大家。
我试图执行“mvn clean test”来验证一个由“mvn archetype:generate”生成的简单 maven 项目。我只是想学习如何编写单元 test.But 我得到了一个例外，经过长时间的调试和尝试，我不知道如何继续，请给我一些建议。 因为我不知道哪里出了问题，所以我会尽量提供更多信息。
os:
mac os 11.2.3(big sur with m1 chip)
jdk:
openjdk version "1.8.0_282"
OpenJDK Runtime Environment (Zulu 8.52.0.23-CA-macos-aarch64) (build 1.8.0_282-b08)
OpenJDK 64-Bit Server VM (Zulu 8.52.0.23-CA-macos-aarch64) (build 25.282-b08, mixed mode)
maven: apache-maven-3.8.1(我也试过3.6.3)
pom.xml:
<properties>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.jmockit</groupId>
<artifactId>jmockit</artifactId>
<version>1.36</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
</dependencies>
主要java代码：
package com.juexi.learning;
/**
* Hello world!
*
*/
public class App {
public int getId() {
return 333;
}
}
测试java代码：
package com.juexi.learning;
import org.junit.Assert;
import org.junit.Test;
import mockit.Mocked;
/**
* Unit test for simple App.
*/
public class AppTest {
@Mocked
App app;
@Test
public void testApp() {
Assert.assertSame(1, app.getId());
}
}
堆栈跟踪信息：
Running com.juexi.learning.AppTest
java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
at mockit.internal.startup.AgentLoader.getVirtualMachineImplementationFromEmbeddedOnes(AgentLoader.java:80)
at mockit.internal.startup.AgentLoader.loadAgent(AgentLoader.java:52)
at mockit.internal.startup.Startup.initializeIfPossible(Startup.java:147)
at org.junit.runner.Runner.<clinit>(Runner.java:22)
at org.junit.internal.builders.JUnit4Builder.runnerForClass(JUnit4Builder.java:10)
at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
at org.junit.internal.builders.AllDefaultPossibilitiesBuilder.runnerForClass(AllDefaultPossibilitiesBuilder.java:26)
at org.junit.runners.model.RunnerBuilder.safeRunnerForClass(RunnerBuilder.java:59)
at org.junit.internal.requests.ClassRequest.getRunner(ClassRequest.java:33)
at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:250)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:141)
at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:112)
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.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:189)
at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:165)
at org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:85)
at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:115)
at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:75)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at mockit.internal.startup.AgentLoader.getVirtualMachineImplementationFromEmbeddedOnes(AgentLoader.java:76)
... 20 more
Caused by: java.lang.UnsatisfiedLinkError: sun.tools.attach.BsdVirtualMachine.createAttachFile(Ljava/lang/String;)V
at sun.tools.attach.BsdVirtualMachine.createAttachFile(Native Method)
at sun.tools.attach.BsdVirtualMachine.<init>(BsdVirtualMachine.java:74)
... 25 more
Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 0.047 sec <<< FAILURE!
testApp(com.juexi.learning.AppTest) Time elapsed: 0.003 sec <<< ERROR!
java.lang.NullPointerException
at com.juexi.learning.AppTest.testApp(AppTest.java:17)
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.junit.runners.model.FrameworkMethod.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access[=15=]0(ParentRunner.java:58)
at org.junit.runners.ParentRunner.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:252)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:141)
at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:112)
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.apache.maven.surefire.util.ReflectionUtils.invokeMethodWithArray(ReflectionUtils.java:189)
at org.apache.maven.surefire.booter.ProviderFactory$ProviderProxy.invoke(ProviderFactory.java:165)
at org.apache.maven.surefire.booter.ProviderFactory.invokeProvider(ProviderFactory.java:85)
at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:115)
at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:75)
Results :
Tests in error:
testApp(com.juexi.learning.AppTest)
我试过的： 我尝试调试并在 class BsdVirtualMachine.class
中得到了这个public BsdVirtualMachine(AttachProvider provider, String vmid)
throws AttachNotSupportedException, IOException
{
super(provider, vmid);
// This provider only understands pids
int pid;
try {
pid = Integer.parseInt(vmid);
} catch (NumberFormatException x) {
throw new AttachNotSupportedException("Invalid process identifier");
}
// Find the socket file. If not found then we attempt to start the
// attach mechanism in the target VM by sending it a QUIT signal.
// Then we attempt to find the socket file again.
path = findSocketFile(pid);
if (path == null) {
File f = new File(tmpdir, ".attach_pid" + pid);
createAttachFile(f.getPath()); // this line is where the exception comes from
try {
sendQuitTo(pid);
....
并在 ClassLoader.class 中调用：
static long findNative(ClassLoader loader, String name) {
Vector<NativeLibrary> libs =
loader != null ? loader.nativeLibraries : systemNativeLibraries;
synchronized (libs) {
int size = libs.size();
for (int i = 0; i < size; i++) {
NativeLibrary lib = libs.elementAt(i);
long entry = lib.find(name);
if (entry != 0)
return entry;
}
}
return 0;
}
似乎本地方法 createAttachFile(String path) 试图创建一个文件，并且 ClassLoader 试图从本地加载此本地方法，但在 /Library/Java/JavaVirtualMachines/zulu-8 中找不到此方法。jdk/Contents/Home/jre/lib/libattach.dylib（我通过调试找到这个）。 那么，我该怎么做才能解决这个问题？我不知道该怎么做next.could有人帮我吗？
这看起来类似于 https://github.com/raphw/byte-buddy/issues/1001。请仔细检查应用程序类路径
中是否有任何不同的tools.jar在@Mells 的帮助下，我post将这个问题发给了 jmockit 的开发者。更多信息请查看github
而且，开发人员告诉我，这是因为 zulujdk8 删除了本地方法。
-JNIEXPORT void JNICALL Java_sun_tools_attach_VirtualMachineImpl_createAttachFile(JNIEnv *env, jclass cls, jstring path)
+JNIEXPORT void JNICALL Java_sun_tools_attach_VirtualMachineImpl_createAttachFile0(JNIEnv *env, jclass cls, jstring path)
我解决了这个问题。
jUnit 编译和构建选择：/Library/Java/JavaVirtualMachines/zulu-8.jdk/Contents/Home（这是您的 java_home 路径）而不是其他版本。
并且 运行，有效！！！