C++ (Cpp) catchIfJavaException示例

示例#1

文件： InitializeJVM.c 项目： leowzukw/scilab-mirror

/*--------------------------------------------------------------------------*/
BOOL ExecuteInitialHooks(void)
{
    JNIEnv * currentENV = getScilabJNIEnv();
    JavaVM * currentJVM = getScilabJavaVM();

    jint result = (*currentJVM)->AttachCurrentThread(currentJVM, (void **) &currentENV, NULL) ;
    if (result == 0)
    {
        jclass cls = NULL;
        cls = (*currentENV)->FindClass(currentENV, "org/scilab/modules/core/Scilab");
        catchIfJavaException(_("Could not access to the Main Scilab Class:\n"));
        if (cls)
        {
            jmethodID mid = NULL;
            mid = (*currentENV)->GetStaticMethodID(currentENV, cls, "executeInitialHooks", "()V");
            if (mid)
            {
                (*currentENV)->CallStaticVoidMethod(currentENV, cls, mid);
            }
            catchIfJavaException(_("Cannot execute initial hooks. Error:\n"));

            return TRUE;
        }
    }
    return FALSE;
}

示例#2

文件： system_setproperty.c 项目： rossdrummond/scilab

/*--------------------------------------------------------------------------*/ 
char * system_setproperty(char *property,char *value)
{
	char *retValue = NULL;

	JNIEnv * currentENV = getScilabJNIEnv();

	if (currentENV)
	{
		jclass cls = NULL;
		cls = (*currentENV)->FindClass(currentENV, "java/lang/System");
		if (cls)
		{
			jmethodID mid = NULL;
			mid = (*currentENV)->GetStaticMethodID(currentENV, cls, "setProperty","(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;");
			if (mid)
			{
				BOOL bOK = FALSE;
				const char *strPreviousValue = NULL;
				jstring jstrProperty;
				jstring jstrValue;
				jstring jstrPreviousValue;
		
				jstrProperty = (*currentENV)->NewStringUTF(currentENV,property);
				jstrValue = (*currentENV)->NewStringUTF(currentENV,value);

				jstrPreviousValue = (*currentENV)->CallStaticObjectMethod(currentENV,cls, mid,jstrProperty,jstrValue);
				bOK = catchIfJavaException(""); 

				if (bOK)
				{
					if (jstrPreviousValue)
					{
						strPreviousValue = (*currentENV)->GetStringUTFChars(currentENV,jstrPreviousValue, 0);
						if (strPreviousValue)
						{
							retValue = strdup(strPreviousValue);
						}
						(*currentENV)->ReleaseStringUTFChars(currentENV, jstrPreviousValue , strPreviousValue);
					}
				}
			}
		}
	}
	return retValue;
}