JNI,Caused by: java.lang.UnsatisfiedLinkError: com.tencent.wxapp.core.jni.JNI.call(Ljava/util/List;)[B

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英文:

JNI,Caused by: java.lang.UnsatisfiedLinkError: com.tencent.wxapp.core.jni.JNI.call(Ljava/util/List;)[B

问题

以下是您要翻译的内容:

I try to call cpp in Java. After packaging into Jar, such an error occurs after running.
I can run these codes in the Linux system, but I regret reporting the error after packaging them into a jar.

How should I modify my program? Is there a naming problem?

com.tencent.oceanus.jar.program.ProgramInvocationException: org.apache.flink.client.program.ProgramInvocationException: The program caused an error:
at com.tencent.oceanus.jar.CliFrontend.executeProgram(CliFrontend.java:248)
at com.tencent.oceanus.jar.CliFrontend.getJobGraph(CliFrontend.java:168)
at com.tencent.oceanus.server.jobs.JobManager.compile(JobManager.java:257)
at com.tencent.oceanus.server.jobs.transitions.StartTransitionCallback$StartThread.start(StartTransitionCallback.java:236)
at com.tencent.oceanus.server.jobs.transitions.StartTransitionCallback$StartThread.run(StartTransitionCallback.java:142)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.flink.client.program.ProgramInvocationException: The program caused an error:
at org.apache.flink.client.program.OptimizerPlanEnvironment.getOptimizedPlan(OptimizerPlanEnvironment.java:93)
at com.tencent.oceanus.jar.program.ClusterClient.getOptimizedPlan(ClusterClient.java:244)
at com.tencent.oceanus.jar.program.ClusterClient.run(ClusterClient.java:316)
at com.tencent.oceanus.jar.program.ClusterClient.run(ClusterClient.java:285)
at com.tencent.oceanus.jar.CliFrontend.executeProgram(CliFrontend.java:242)
... 9 more
Caused by: java.lang.UnsatisfiedLinkError: com.tencent.wxapp.core.jni.JNI.call(List;)[B
at com.tencent.wxapp.core.jni.JNI.call(Native Method)
at com.tencent.wxapp.core.jni.JNITest.main(JNITest.java:30)
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 com.tencent.oceanus.jar.program.CustomPackagedProgram.callMainMethod(CustomPackagedProgram.java:314)
at com.tencent.oceanus.jar.program.CustomPackagedProgram.invokeInteractiveModeForExecution(CustomPackagedProgram.java:213)
at org.apache.flink.client.program.OptimizerPlanEnvironment.getOptimizedPlan(OptimizerPlanEnvironment.java:83)
... 13 more

This is my JNI.java

package com.tencent.wxapp.core.jni;

import java.io.*;
import java.util.List;

public class JNI{
public native byte[] call(List jList);
static{
InputStream is = JNI.class.getResourceAsStream("/JNIdll.so");
File file = null;
try {
file = File.createTempFile("lib", ".so");
} catch (IOException e) {
e.printStackTrace();
}
OutputStream os = null;
try {
os = new FileOutputStream(file);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
byte[] buffer = new byte[1024];
int length = 0;
while (true) {
try {
if (!((length = is.read(buffer)) != -1)) break;
} catch (IOException e) {
e.printStackTrace();
}
try {
os.write(buffer, 0, length);
} catch (IOException e) {
e.printStackTrace();
}
}
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
try {
os.close();
} catch (IOException e) {
e.printStackTrace();
}

    System.load(file.getAbsolutePath());
    file.deleteOnExit();
}

}

This is my JNI.cpp

//JNIdll.cpp文件

#include<stdio.h>
#include
#include
#include "hyperloglog.hpp"
#include
#include
#include
#include "JNI.h"

using namespace hll;
using namespace std;

JNIEXPORT jbyteArray JNICALL Java_JNI_call
(JNIEnv env, jobject obj,jobject jList){
//实现代码
HyperLogLog hll(10);
// retrieve the java.util.List interface class
jclass cList = env->FindClass("java/util/List");
// retrieve the toArray method and invoke it
jmethodID mToArray = env->GetMethodID(cList, "toArray", "()[Ljava/lang/Object;");
jobjectArray array = (jobjectArray)env->CallObjectMethod(jList, mToArray);
// now create the string array
string
sArray = new string[env->GetArrayLength(array)];

    for(int i=0;i<env->GetArrayLength(array);i++) {
        // retrieve the chars of the entry strings and assign them to the array!
        jstring strObj = (jstring)env->GetObjectArrayElement(array, i);
        const char * chr = env->GetStringUTFChars(strObj, NULL);
        sArray[i].append(chr);
        env->ReleaseStringUTFChars(strObj, chr);
    }

    // just print the array to std::cout
    for(int i=0;i<env->GetArrayLength(array);i++) {
       //print value
       cout << sArray[i] << endl;
       const char* p = sArray[i].data();
       hll.add(p,10);
    }

    //print estimate value
    cout<<hll.estimate()<<endl;

    //输出到二进制流
    std::ostringstream sstream;
    hll.dump(sstream);

    const std::string nativeString = sstream.str(); //转换成字符串
    jbyteArray arr = env->NewByteArray(nativeString.length());
    env->SetByteArrayRegion(arr,0,nativeString.length(),(jbyte*)nativeString.c_str()); //存入到二进制array传回Java

return arr;

}

This is my JNI.h

/* DO NOT EDIT THIS FILE - it is machine generated /
#include <jni.h>
/
Header for class JNI */

#ifndef _Included_JNI
#define _Included_JNI
#ifdef __cplusplus
extern "C" {
#endif
/*

  • Class: JNI
  • Method: call
  • Signature: (Ljava/util/ArrayList;)[B
    */
    JNIEXPORT jbyteArray JNICALL Java_JNI_call
    (JNIEnv *, jobject, jobject);

#ifdef __cplusplus
}
#endif
#endif

英文:

I try to call cpp in Java. After packaging into Jar, such an error occurs after running.
I can run these codes in the Linux system, but I regret reporting the error after packaging them into a jar.

How should I modify my program? Is there a naming problem?

    com.tencent.oceanus.jar.program.ProgramInvocationException: org.apache.flink.client.program.ProgramInvocationException: The program caused an error: 
	at com.tencent.oceanus.jar.CliFrontend.executeProgram(CliFrontend.java:248)
	at com.tencent.oceanus.jar.CliFrontend.getJobGraph(CliFrontend.java:168)
	at com.tencent.oceanus.server.jobs.JobManager.compile(JobManager.java:257)
	at com.tencent.oceanus.server.jobs.transitions.StartTransitionCallback$StartThread.start(StartTransitionCallback.java:236)
	at com.tencent.oceanus.server.jobs.transitions.StartTransitionCallback$StartThread.run(StartTransitionCallback.java:142)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.flink.client.program.ProgramInvocationException: The program caused an error: 
	at org.apache.flink.client.program.OptimizerPlanEnvironment.getOptimizedPlan(OptimizerPlanEnvironment.java:93)
	at com.tencent.oceanus.jar.program.ClusterClient.getOptimizedPlan(ClusterClient.java:244)
	at com.tencent.oceanus.jar.program.ClusterClient.run(ClusterClient.java:316)
	at com.tencent.oceanus.jar.program.ClusterClient.run(ClusterClient.java:285)
	at com.tencent.oceanus.jar.CliFrontend.executeProgram(CliFrontend.java:242)
	... 9 more
Caused by: java.lang.UnsatisfiedLinkError: com.tencent.wxapp.core.jni.JNI.call(Ljava/util/List;)[B
	at com.tencent.wxapp.core.jni.JNI.call(Native Method)
	at com.tencent.wxapp.core.jni.JNITest.main(JNITest.java:30)
	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 com.tencent.oceanus.jar.program.CustomPackagedProgram.callMainMethod(CustomPackagedProgram.java:314)
	at com.tencent.oceanus.jar.program.CustomPackagedProgram.invokeInteractiveModeForExecution(CustomPackagedProgram.java:213)
	at org.apache.flink.client.program.OptimizerPlanEnvironment.getOptimizedPlan(OptimizerPlanEnvironment.java:83)
	... 13 more

This is my JNI.java

package com.tencent.wxapp.core.jni;

import java.io.*;
import java.util.List;

public class JNI{
    public native byte[] call(List&lt;String&gt; jList);
    static{
        InputStream is = JNI.class.getResourceAsStream(&quot;/JNIdll.so&quot;);
        File file = null;
        try {
            file = File.createTempFile(&quot;lib&quot;, &quot;.so&quot;);
        } catch (IOException e) {
            e.printStackTrace();
        }
        OutputStream os = null;
        try {
            os = new FileOutputStream(file);
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
        byte[] buffer = new byte[1024];
        int length = 0;
        while (true) {
            try {
                if (!((length = is.read(buffer)) != -1)) break;
            } catch (IOException e) {
                e.printStackTrace();
            }
            try {
                os.write(buffer, 0, length);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        try {
            is.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        try {
            os.close();
        } catch (IOException e) {
            e.printStackTrace();
        }

        System.load(file.getAbsolutePath());
        file.deleteOnExit();


    }
}

This is my JNI.cpp

//JNIdll.cpp文件

#include&lt;stdio.h&gt;
#include&lt;iostream&gt;
#include &lt;strstream&gt;
#include &quot;hyperloglog.hpp&quot;
#include &lt;vector&gt;
#include &lt;string&gt;
#include &lt;fstream&gt;
#include &quot;JNI.h&quot;


using namespace hll;
using namespace std;

JNIEXPORT jbyteArray JNICALL Java_JNI_call
  (JNIEnv *env, jobject obj,jobject jList){
      //实现代码
        HyperLogLog hll(10);
        // retrieve the java.util.List interface class
        jclass cList = env-&gt;FindClass(&quot;java/util/List&quot;);
        // retrieve the toArray method and invoke it
        jmethodID mToArray = env-&gt;GetMethodID(cList, &quot;toArray&quot;, &quot;()[Ljava/lang/Object;&quot;);
        jobjectArray array = (jobjectArray)env-&gt;CallObjectMethod(jList, mToArray);
        // now create the string array
        string* sArray = new string[env-&gt;GetArrayLength(array)];

        for(int i=0;i&lt;env-&gt;GetArrayLength(array);i++) {
            // retrieve the chars of the entry strings and assign them to the array!
            jstring strObj = (jstring)env-&gt;GetObjectArrayElement(array, i);
            const char * chr = env-&gt;GetStringUTFChars(strObj, NULL);
            sArray[i].append(chr);
            env-&gt;ReleaseStringUTFChars(strObj, chr);
        }

        // just print the array to std::cout
        for(int i=0;i&lt;env-&gt;GetArrayLength(array);i++) {
           //print value
           cout &lt;&lt; sArray[i] &lt;&lt; endl;
           const char* p = sArray[i].data();
           hll.add(p,10);
        }

        //print estimate value
        cout&lt;&lt;hll.estimate()&lt;&lt;endl;

        //输出到二进制流
        std::ostringstream sstream;
        hll.dump(sstream);

        const std::string nativeString = sstream.str(); //转换成字符串
        jbyteArray arr = env-&gt;NewByteArray(nativeString.length());
        env-&gt;SetByteArrayRegion(arr,0,nativeString.length(),(jbyte*)nativeString.c_str()); //存入到二进制array传回Java

    return arr;
}

This is my JNI.h

/* DO NOT EDIT THIS FILE - it is machine generated */
#include &lt;jni.h&gt;
/* Header for class JNI */

#ifndef _Included_JNI
#define _Included_JNI
#ifdef __cplusplus
extern &quot;C&quot; {
#endif
/*
 * Class:     JNI
 * Method:    call
 * Signature: (Ljava/util/ArrayList;)[B
 */
JNIEXPORT jbyteArray JNICALL Java_JNI_call
  (JNIEnv *, jobject, jobject);

#ifdef __cplusplus
}
#endif
#endif

答案1

得分: 1

由于原生方法声明为com.tencent.wxapp.core.jni.JNI.call,Java正在寻找共享库中名为Java_com_tencent_wxapp_core_jni_JNI_call的方法。您已导出为Java_JNI_call

英文:

Since the native method is declared as com.tencent.wxapp.core.jni.JNI.call, Java is looking for a method in the shared library called Java_com_tencent_wxapp_core_jni_JNI_call. You have exported Java_JNI_call.

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  • 本文由 发表于 2020年8月4日 21:50:04
  • 转载请务必保留本文链接:https://go.coder-hub.com/63248342.html
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