5
回答
E:\MySource\app_test\NativeTest>java HelloNativeTest
Exception in thread "main" java.lang.UnsatisfiedLinkError: E:\MySource\app_test\NativeTest\HelloNative.dll: Can't find d
ependent libraries
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(Unknown Source)
at java.lang.ClassLoader.loadLibrary(Unknown Source)
at java.lang.Runtime.loadLibrary0(Unknown Source)
at java.lang.System.loadLibrary(Unknown Source)
at HelloNativeTest.<clinit>(HelloNativeTest.java:4)
Could not find the main class: HelloNativeTest. Program will exit. 运行JNI测试程序，提示如上。 下面是程序，按照Java核心技术第八版上的实例程序来的：
class HelloNative
{
public static native void greeting();
}
javac HelloNative.java
javah HelloNative
生成如下C的头文件：
/* DO NOT EDIT THIS FILE - it is machine generated */
#include <jni.h>
/* Header for class HelloNative */
#ifndef _Included_HelloNative
#define _Included_HelloNative
#ifdef __cplusplus
extern "C" {
#endif
/*
* Class: HelloNative
* Method: greeting
* Signature: ()V
*/
JNIEXPORT void JNICALL Java_HelloNative_greeting
(JNIEnv *, jclass);
#ifdef __cplusplus
}
#endif
#endif
编写C文件：
#include "HelloNative.h"
#include <stdio.h>
JNIEXPORT void JNICALL Java_HelloNative_greeting(JNIEnv* env, jclass cl)
{
printf("Hello Native World\n");
}
在Windows7 64位平台上使用MinGW编译该程序生成dll文件，命令如下：
gcc -Wall -D_JNI_IMPLEMENTATION_ -Wl,--kill-at -I%JAVA_HOME%/include -I%JAVA_HOME%/include/win32 -shared HelloNative.c -o HelloNative.dll
class HelloNativeTest{
static{
System.loadLibrary("HelloNative");
}
public static void main(String args[]){
HelloNative.greeting();
}
}
运行之后就出现了上面的异常，我试过将dll文件路径放入PATH中，试过将dll文件放入System32中，均出现此异常。
请熟悉该问题的朋友，帮忙看下哪里有问题，3Q。
Java