Question

可能重复：
How to trap System.exit() in code called from JNI

调用后

JNI CallStaticVoidMethod正确启动Java进程，但不返回C++代码，之后就退出。我的java code没有system.exit(0)但只有return;

jclass StringClass = m_JVMEnv->FindClass("java/lang/String");
    int numOfArguments = (int)m_ServerArguments.size() + 4 ;
    int argumentIndex = 0;

    jobjectArray jargs = m_JVMEnv->NewObjectArray(numOfArguments, StringClass, NULL);    

    m_JVMEnv->SetObjectArrayElement(jargs, argumentIndex++, m_JVMEnv->NewStringUTF("start"));

    std::string strJavaClassPath = "-classpath=";
    strJavaClassPath             += "\"";
    for ( std::size_t idx = 0; idx < m_listOfJars.size() - 1 ; idx++) {
        strJavaClassPath += m_ProductLibDir + "\\lib\\" + m_listOfJars[idx] + ";";
    }
    strJavaClassPath      += m_ProductLibDir + "\\lib\\" + m_listOfJars[m_listOfJars.size() - 1] ;
    strJavaClassPath      += "\"";

    m_JVMEnv->SetObjectArrayElement(jargs, argumentIndex++, m_JVMEnv->NewStringUTF(strJavaClassPath.c_str()));

    for ( std::vector<std::string>::iterator iter = m_ServerArguments.begin(); iter != m_ServerArguments.end(); ++iter) {
        std::string argument = *iter;
        m_JVMEnv->SetObjectArrayElement(jargs, argumentIndex++, m_JVMEnv->NewStringUTF(argument.c_str()));
    }
    m_JVMEnv->SetObjectArrayElement(jargs, argumentIndex, m_JVMEnv->NewStringUTF("-dir=E:\\Avinash\\personal\\work\\CreateJvm\\Debug"));    

    m_JVMEnv->CallStaticVoidMethod(m_CacheServerLauncherClass, m_MainMethodID, jargs);

    std::cout << "I am done with launching java program" << std::endl;
    m_RunningJVMInstance->DestroyJavaVM();
    CheckForJNIException();

此行程序控件未返回后

m_JVMEnv->CallStaticVoidMethod(m_CacheServerLauncherClass, m_MainMethodID, jargs);。

Answer 1

您的Java代码需要运行一个线程，如果您想要另一个C ++代码线程，则必须创建一个。

用于main的JNI CallStaticVoidMethod不返回到c ++

1 个答案: