JNI代码中的UnsatisfiedLinkError

JNI代码中的UnsatisfiedLinkError

本文介绍了JNI代码中的UnsatisfiedLinkError的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我试图创建一个简单的JNI项目来获取JNI的挂件,但我一直在遇到这个错误:

 线程main中的异常java.lang.UnsatisfiedLinkError:HPAProgram.sayHello()

I don没有太多代码,所以我可以在这里粘贴大部分代码。



我运行以下命令:

  javac HPAProgram.java 
javah HPAProgram
cc -v -c -fPIC -I / System / Library / Frameworks / JavaVM.framework / Versions / A / Headers / HPAProgram.c ++ -o libHPAProgram.o
libtool -dynamic -lSystem libHPAProgram.o -o libHPAProgram.dylib
LD_LIBRARY_PATH =。
export LD_LIBRARY_PATH
java HPAProgram

HPAProgram.java

  public class HPAProgram {

public native void sayHello();

public static void main(String [] args){

System.loadLibrary(HPAProgram);
System.out.println(In java main);

HPAProgram s = new HPAProgram();
s.sayHello();
}
}

HPAProgram.c ++:

  / * 
* HPAProgram.c ++
*
*创建日期:2014年2月4日
*作者:zalbhathena
* /

//#include
#include< stdio.h>
#includeHPAProgram.h

JNIEXPORT void JNICALL Java_JniSample_sayHello(JNIEnv * env,jobject obj){
printf(Hello World!\\\
);
}

HPAProgram.h:

  / *不要编辑这个文件 - 它是机器生成的* / 
#include< jni.h>
/ * Header for HPAProgram * /

#ifndef _Included_HPAProgram
#define _Included_HPAProgram
#ifdef __cplusplus
externC{
#endif
$ * b $ b *类:HPAProgram
*方法:sayHello
*签名:()V
* /
JNIEXPORT void JNICALL Java_HPAProgram_sayHello
(JNIEnv *,jobject);

#ifdef __cplusplus
}
#endif
#endif



$ b

您有:

修复.c文件以同意.h文件。


I'm trying to create a simple JNI project to get the hang of JNI, but I keep running into this error:

Exception in thread "main" java.lang.UnsatisfiedLinkError: HPAProgram.sayHello()

I don't have much code yet, so I can paste most of it here.

I run the following commands:

javac HPAProgram.java
javah HPAProgram
cc -v -c -fPIC -I/System/Library/Frameworks/JavaVM.framework/Versions/A/Headers/ HPAProgram.c++ -o libHPAProgram.o
libtool -dynamic -lSystem libHPAProgram.o -o libHPAProgram.dylib
LD_LIBRARY_PATH=.
export LD_LIBRARY_PATH
java HPAProgram

HPAProgram.java

public class HPAProgram {

    public native void sayHello();

    public static void main(String[] args) {

        System.loadLibrary("HPAProgram");
        System.out.println("In java main");

        HPAProgram s = new HPAProgram();
        s.sayHello();
    }
}

HPAProgram.c++:

/*
 * HPAProgram.c++
 *
 *  Created on: Feb 4, 2014
 *      Author: zalbhathena
 */

//#include <jni.h>
#include <stdio.h>
#include "HPAProgram.h"

JNIEXPORT void JNICALL Java_JniSample_sayHello (JNIEnv *env, jobject obj) {
   printf("Hello World!\n");
}

HPAProgram.h:

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

#ifndef _Included_HPAProgram
#define _Included_HPAProgram
#ifdef __cplusplus
extern "C" {
#endif
/*
 * Class:     HPAProgram
 * Method:    sayHello
 * Signature: ()V
 */
JNIEXPORT void JNICALL Java_HPAProgram_sayHello
  (JNIEnv *, jobject);

#ifdef __cplusplus
}
#endif
#endif
解决方案

It said

You have:

and

Fix the .c file to agree with the .h file.

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08-05 03:14