1

我知道这个问题已经被问过很多次了，我已经阅读了很多没有正面结果的帖子，因此寻求帮助。

原始来源是Java Programming with JNI

我收到以下错误

Exception in thread "main" java.lang.UnsatisfiedLinkError: no libSample1 in java.library.path
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1738)
at java.lang.Runtime.loadLibrary0(Runtime.java:823)
at java.lang.System.loadLibrary(System.java:1028)
at Sample1.main(Sample1.java:10)

源代码如下

Sample1.java

public class Sample1
{
public native int intMethod(int n);

public static void main(String[] args)
{
    System.loadLibrary("libSample1");
    Sample1 sample  = new Sample1();
    int     square  = sample.intMethod(5);

    System.out.println("intMethod " + square);
}
 }

样品1.h

/* DO NOT EDIT THIS FILE - it is machine generated */
#include <jni.h>
/* Header for class Sample1 */
#ifndef _Included_Sample1
#define _Included_Sample1
#ifdef __cplusplus
extern "C" {
#endif
JNIEXPORT jint JNICALL Java_Sample1_intMethod
  (JNIEnv *, jobject, jint);
#ifdef __cplusplus
}
#endif
#endif

样本1.cpp

#include "Sample1.h"
#include <string.h>

JNIEXPORT jint JNICALL Java_Sample1_intMethod(JNIEnv *env, jobject obj, jint num)
{
return num * num ;
}

操作系统：Ubuntu 12.04 LTS

编译命令

g++ -shared -fPIC -I/usr/lib/jvm/jdk1.6.0_45/include -I/usr/lib/jvm/jdk1.6.0_45/include/linux Sample1.cpp -o libSample1.so

我也试过

java -Djava.library.path=/home/userid/java_proj/example Sample1

提前感谢您的帮助

更新 -> 答案： Javah -jni Sample1 解决了问题

谢谢

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0 回答 0