JNI java.lang.UnsatisfiedLinkError
我试图调用一个本机方法,但得到“java.lang.UnsatifiedLinkError” Java类:JNI java.lang.UnsatisfiedLinkError,java,c++,java-native-interface,unsatisfiedlinkerror,Java,C++,Java Native Interface,Unsatisfiedlinkerror,我试图调用一个本机方法,但得到“java.lang.UnsatifiedLinkError” 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_Nat
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,当我调用第一个方法时,它工作得很好,但是当我调用第二个方法(void方法)时,它失败了 Java类的名称是
CLS\u NativeData
。但是,C++中你写的是:
Java\u pkg\u 1main\u CLS\u nativedata\u getValue
并在任何地方使用
CLS_1NativeData
。它拼错了。因此,类加载器在共享库中找不到本机方法,并说java.lang.unsatifiedLinkError
,但当我调用第一个方法时,它工作得非常好。第二种方法失败。对不起,我没有撒谎。第一种方法非常有效。无论如何,我会尝试修复方法的名称您是对的,我非常感谢您,因为错误出现在方法的名称中。但我不明白为什么第一种方法有效。。。Спасибо коллега :)