我正在尝试调用其中一种本机方法,但我得到“java.lang.UnsatisfiedLinkError”。
Java 类:
public class CLS_NativeData {
private final static String sLibName = "NativeData.dll";
private native String getValue(int i);
private native void setValue(int i);
public CLS_NativeData() {
super();
}
static {
System.load(CLS_Globals.LIB_PATH + sLibName);
}
public String getData(int i) {
return getValue(i);
}
public void setData(int i) {
setValue(i);
}
}
C/C++ DLL 头文件
/* DO NOT EDIT THIS FILE - it is machine generated */
#include "jni.h"
/* Header for class pkg_main_CLS_NativeData */
#ifndef _Included_pkg_main_CLS_NativeData
#define _Included_pkg_main_CLS_NativeData
#ifdef __cplusplus
extern "C" {
#endif
/*
* Class: pkg_main_CLS_NativeData
* Method: getValue
* Signature: (I)Ljava/lang/String;
*/
JNIEXPORT jstring JNICALL Java_pkg_1main_CLS_1NativeData_getValue
(JNIEnv *, jobject, jint);
/*
* Class: pkg_main_CLS_NativeData
* Method: setValue
* Signature: (I)V
*/
JNIEXPORT void JNICALL Java_pkg_1main_CLS_1NativeData_setValue
(JNIEnv *, jobject, jint);
#ifdef __cplusplus
}
#endif
#endif
C/C++ DLL.cpp
JNIEXPORT jstring JNICALL Java_pkg_1main_CLS_1NativeData_getValue
(JNIEnv * env, jobject obj, jint i)
{
CoInit();
switch(i) {
case 0:
return env->NewStringUTF(getCPUInfo().c_str());
break;
case 1:
return env->NewStringUTF(getSystemInfo().c_str());
break;
case 2:
return env->NewStringUTF(getMachineInfo().c_str());
break;
case 3:
return env->NewStringUTF(getAntivirusInfo().c_str());
break;
case 4:
return env->NewStringUTF(getProcessList().c_str());
break;
default:
return env->NewStringUTF("ERROR");
}
}
// FAILED METHOD
JNIEXPORT void JNICALL Java_pkg_1main_CLS_1NativeData_setValue
(JNIEnv * env, jobject obj, jint i)
{
switch (i) {
case 0:
printf("Hola mundo\n");
break;
}
}
因此,当我调用第一种方法时,它可以正常工作,但是当我调用第二种方法(void 方法)时,它会失败。