处女贴：linux下通过JNI用C/C++中调用JAVA类，java类添加依赖包后，c++无法调用，无法找到class

案例原帖 http://blog.sina.com.cn/s/blog_48eef8410100fjxr.html

照着这样的例子下来是可以调用的，但import一个简单依赖包后就无法调用了，cpp代码如下

#include <stdio.h>

#include <iostream>

#include <jni.h>

#include <stdlib.h>

#include <assert.h>

#include <cstring>

 



jstring stoJstring(JNIEnv* env, const char* pat)

{

  jclass strClass = env->FindClass("java/lang/String");

  jmethodID ctorID = env->GetMethodID(strClass, "<init>", "([BLjava/lang/String;)V");

  jbyteArray bytes = env->NewByteArray(strlen(pat));

  env->SetByteArrayRegion(bytes, 0, strlen(pat), (jbyte*)pat);

  jstring encoding = env->NewStringUTF("utf-8");

  return (jstring)env->NewObject(strClass, ctorID, bytes, encoding);

}

 



char* jstringTostring(JNIEnv* env, jstring jstr)

{

 char* rtn = NULL;

 jclass clsstring = env->FindClass("java/lang/String");

 jstring strencode = env->NewStringUTF("utf-8");

 jmethodID mid = env->GetMethodID(clsstring, "getBytes", "(Ljava/lang/String;)[B");

 jbyteArray barr= (jbyteArray)env->CallObjectMethod(jstr, mid, strencode);

 jsize alen = env->GetArrayLength(barr);

 jbyte* ba = env->GetByteArrayElements(barr,JNI_FALSE);

 if(alen > 0){

  rtn = (char*)malloc(alen + 1);

  memcpy(rtn, ba, alen);

  rtn[alen] = 0;

 }

 env->ReleaseByteArrayElements(barr, ba, 0);

 return rtn;

}

 

using namespace std;

 

int main()

{

 JavaVMOption options[2];

 JNIEnv *env;

 JavaVM *jvm;

 JavaVMInitArgs vm_args;

 long status;

 jclass cls;

 jmethodID mid;

 jint square;

 jboolean jnot;

 jobject jobj;

 options[0].optionString = "-Djava.compiler=NONE";

 options[1].optionString = "-Djava.class.path=./;/home/grid/app/Test/lib/test.jar";

 cout<<options[1].optionString<<endl;

 //options[2].optionString = "-verbose:jni"; 用于跟踪运行时的信息

 vm_args.version = JNI_VERSION_1_4; // JDK版本号

 vm_args.nOptions = 2;

 vm_args.options = options;

 vm_args.ignoreUnrecognized = JNI_TRUE;

 status = JNI_CreateJavaVM(&jvm, (void**)&env, &vm_args);



 if(status != JNI_ERR){

  printf("create java jvm success\n");

  cls = env->FindClass("com/test/MyTest");  // 在这里查找ava类

  if(cls !=0){

   printf("find java class success\n");

   // 构造函数

   mid = env->GetMethodID(cls,"<init>","(II)I");

   if(mid !=0){

    jobj=env->NewObject(cls,mid);

    std::cout << "init ok" << std::endl;

   }

       

   // 调用add函数

   mid = env->GetStaticMethodID( cls, "add", "(II)I");

   if(mid !=0){

    square = env->CallStaticIntMethod( cls, mid, 5,5);

    std::cout << square << std::endl;

   }

   



   // 调用judge函数

  }

  else{

   fprintf(stderr, "FindClass failed\n");

  }

 

  jvm->DestroyJavaVM();

  fprintf(stdout, "Java VM destory.\n");

  return 0;

 }

 else{

  printf("create java jvm fail\n");

  return -1;

 }

}

Mytest.java

package com.test;



import rtest.Test;



public class Mytest {



	static Test sb = new Test();



	public static int add(int a, int b) {

		return sb.ad(a, b) + a + b;

	}



	public boolean judge(boolean bool) {

		return !bool;

	}



	public static void main(String[] args) {

		System.out.println(add(5, 5));

	}

}

Test.java

package rtest;



public class Test {



	public int ad(int a, int b) {

		return a + b;

	}



}

java独立运行是成功的
c++调用就提示FindClass failed
在网上找了好多答案都是说启动参数要加上依赖包路径，可我加了还是一样
options[1].optionString = "-Djava.class.path=./;/home/grid/app/Test/lib/test.jar";

跪求大侠解答，在线等