Please Help: Invoking GetStaticMethodID in cpp/c++ exception error

Hello everyone:

This is my first post, so please no bashing if I don't get it all the first time.

I have looked at this for days now to no avail. I also have read many many threads oon this site trying to get this fixed.

The issues is when I do a GetStaticMedthodID call from C++ on RedHat Linux 7.1, I get an exception thread in "main" ... java.lang.NoSuchMethodID: main.

Here is all of the cpp/c++ code, sorry about formating:

//Declare Preprocessor & Includes

#ifdef HAVE_CONFIG_H

#include <config.h>

#endif

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <pthread.h>

#define PATH_SEPERATOR ':'

#include <copyright.txt.h>

#define classpath "-Djava.class.path=./client.jar:-Djava.class.path=/usr/java/jdk1.3/jre/lib/rt.jar:";

#include <jni.h>

//******** Start Main Function *****************

int main(int argc, char *argv[])

{

char *usg = "\nUsage: \n";

char *copytext = Copyright_Text;

char *load = "rpic/client/cli/CLI";

char *lineopt = "\nError: Not enough options on command line\n";

char *clinusg = "\nError: Command line does not have the right options, see usage:";

char *cargs0 = argv[0];

char *cargs1 = argv[1];

char *cargs2 = argv[2];

char *cargs3 = argv[3];

//Declare JNI Enviroment Settings

JNIEnv *env;

JavaVM *jvm;

JavaVMInitArgs vm_args;

JavaVMOption options[3];

jclass cls;

jclass c;

jobjectArray ja;

jmethodID mid;

options[0].optionString = classpath;

options[1].optionString = "-Djava.library.path=/usr/java/jdk1.3/jre/lib";options[2].optionString= "-verbose:jni";

vm_args.version = JNI_VERSION_1_2;

vm_args.options = options;

vm_args.nOptions = 3;

vm_args.ignoreUnrecognized = JNI_FALSE;

if(argc < 3){

printf(lineopt);

printf(usg);

printf(copytext);

return 0;

}

else if(! ((strcmp(argv[2], "-auto")) || (strcmp(argv[2], "-norm"))) ) {

printf(clinusg);

printf(usg);

printf(copytext);

return 0;

}

else {

printf("\nTrying to Create JVM..............\n\n");

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

if(! (res == JNI_OK) ){

printf("\nCould not initiate Java Virual Machine session. Verify Java Resource Environment (JRE 1.2.2 or higher) installation. \n\n");

return 0;

}

else{

c = env->FindClass("rpic/client/cli/CLI"); /*Classpath*/

if (env->ExceptionOccurred())

env->ExceptionDescribe();

return 0;

}

cls = env->FindClass("java/lang/String"); /*Java Classpath*/

if (env->ExceptionOccurred()){

env->ExceptionDescribe();

return 0;

}

if(c == 0){

printf("\nError: Could not load class /rpic/client/CLI from ./client.jar. Please ensure ./client.jar file from your **** is application in working directory\n");

return 0;

}

if(c !=0)

printf("\nSucsessfuly loaded /rpic/client/cli/CLI from ./client.jar..........\n");

if(cls == 0){

printf("\nError: Could not load class java/lang/string.");

return 0;

}

if(cls !=0)

printf("\nSucsessfuly loaded java/lang/string..........\n");

if(argc == 3)

ja = env->NewObjectArray(2,cls,NULL);

if (env->ExceptionOccurred()){

env->ExceptionDescribe();

printf("\nError: NewObjectArray for the command line options %s %s %s could not be set. \n",cargs0,cargs1,cargs2);

return 0;

}

else

ja = env->NewObjectArray(3,cls,NULL);

if (env->ExceptionOccurred()){

env->ExceptionDescribe();

printf("\nError: NewObjectArray for %s %s %scommand line options could not be set. \n",cargs1,cargs2,cargs3);

return 0;

}

env->SetObjectArrayElement(ja, 0, env->NewStringUTF(argv[1]));

if (env->ExceptionOccurred()){

env->ExceptionDescribe();

printf("Error: SetObjectArrayElement 0 for %s could not be loaded.\n",cargs1);

return 0;

}

env->SetObjectArrayElement(ja, 1, env->NewStringUTF(argv[2]));

if (env->ExceptionOccurred()){

env->ExceptionDescribe();

printf("Error: SetObjectArrayElement for %s could not be loaded.\n",cargs2);

return 0;

}

if(c != NULL)

printf("\n\n\nLoaded Find.Class rpic/client/cli/CLI \n");

if(c == NULL) {

printf("\nCould not load %s:. Please ensure working directory contains client.jar.\n\n", load);

return 0;

}

printf("\n\nStarting GetStaticMethodID \n\n");

mid = env->GetStaticMethodID(c, "main", "([java/lang/String)V");

if (env->ExceptionOccurred()){

env->ExceptionDescribe();

printf("Error: GetStaticMethodID Failed.\n");

return 0;

}

env->CallStaticVoidMethod(c,mid,ja);

if (env->ExceptionOccurred()){

env->ExceptionDescribe();

printf("Error: After setting JavaMethodID JVM failed with exception. \n");

return 0;

}

int *exit = 0;

pthread_exit(&exit);

return 1;

}

I have used the following during compilation

-L/usr/java/jdk1.3/jre/lib/i386 -L/usr/java/jdk1.3/jre/lib/i386/client -L/usr/java/jdk1.3/jre/lib/i386/native_threads

-ljvm -lhpi

I have exported the following enviroments:

LD_LIBRARY_PATH="/usr/java/jdk1.3/jre/lib/i386/classic:/usr/java/jdk1.3/jre/lib/i386/native_threads:/usr/java/jdk1.3/jre/lib/i386

CLASSPATH=/usr/java/jdk1.3/jre/bin/rt.jar:./

and $PATH has the correct path to the bin dir.

If I go to a bash shell and run:

java -classpath ./client.jar rpic/client/cli/CLI option1 -option2

it runs.

This version of the code compiled in visual c++ on a MS platform works as well. I belive this is just some thing I am doing wrong on Linux. Any and all help would be very much appreicated.

Best Regards

JFS

[6168 byte] By [jfgoofy] at [2007-9-26 1:43:56]

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Please Help: Invoking GetStaticMethodID in cpp/c++ exception error

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