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From Mark Nüßler <mark.nuess...@9elements.com>
Subject Re: JNI
Date Thu, 16 Aug 2007 13:54:17 GMT
thx

i tried to set the classpath, no success.

my fault :

i didn't place the jar with the native call
in any lib-folder :-(


mfg derMark



Ruiz González schrieb:
> May be this can help You 
> 
> http://forum.java.sun.com/thread.jspa?threadID=780109
> 
> 
> José de Jesús Ruíz González
> Desarrollo de Aplicaciones Comerciales
> México Asistencia
> Insurgentes Sur No. 1685
> 01020 México, D.F. (México)
> Tlfno: (+52) 55 54 80 38 40 ext 2140
> Fax: (+52) 55 56 11 20 11
> jjruiz@mapfre.com
> 
> -----Mensaje original-----
> De: Mark Nüßler [mailto:mark.nuessler@9elements.com] 
> Enviado el: Miércoles, 15 de Agosto de 2007 05:57 a.m.
> Para: axis-user@ws.apache.org
> Asunto: JNI
> 
> hello users,
> 
> my first experience in ws was axis2c 3 month ago.
> when i noticed that axis2c has no client session,
> i decided to take axis2java, cause i don#T want
> to implement on my own.
> 
> my service has to communicate with some
> hardwaredevices. i build an jni wrapper
> dll to talk to that devices - this works
> fine. but when i try to load the libary
> in the skeleton i run into trouble.
> 
> i have searched the user- and developer-list,
> saw that i am not the only onw that runs
> into trouble with jni,
> but didn't find a proper answer.
> 
> so my question is, has anyone of you
> did this succefully ?
> 
> my enviroment :
> winXP
> java 1.6
> 
> what i did :
> 
> 1. write a simple service with a method that
> adds 2 int's (adb-codegen) - works fine
> 
> 2. write a jni-dll with the same method and
> test it standalone - works fine
> 
> 3. try to integrate :
> place the native method in the skeleton,
> 
> public native int addieren(int a, int b);
> 
> generate with javah -jni the header-file,
> 
> JNIEXPORT jint JNICALL 
> Java_org_apache_ws_axis2_Jni_1serviceSkeleton_addieren
>    (JNIEnv *, jclass, jint, jint);
> 
> implement method and build the jni-dll,
> 
> JNIEXPORT jint JNICALL JNICALL 
> Java_org_apache_ws_axis2_Jni_1serviceSkeleton_addieren(JNIEnv *env, 
> jobject obj, jint a, jint b) {
> 	return (a + b);
> }
> 
> declare static construct in skeleton,
> 
> static {
>    try {
>      System.load("<path>\\jni_simple_native.dll");
>      //System.loadLibrary("jni_simple_native.dll");
>    } catch(Exception e) {
>      e.printStackTrace();
>    }
> }
> 
> when i use "System.loadLibrary" the dll could not be found,
> i searched the web and checked my Windows PATH variable,
> placed the dll in different folders like c:\windows\system32,
> but same result.
> 
> when i use "System.load" the dll was found, but it seems
> that the native method could not perform correctly
> 
> here is my implementation :
> 
> public org.apache.ws.axis2.AddierenResponse
>      addieren(org.apache.ws.axis2.Addieren addieren) {
> 
>    AddierenResponse response = new AddierenResponse();
>    int a = addieren.getParam0();
>    int b = addieren.getParam1();
> 
>    System.out.println("--- server before --------");
> 
>    int c = addieren(a,b);
> 
>    System.out.println("--- server after --------");
>    System.out.println("c : " + c);
> 
>    response.set_return(c);
>    return response;
> }
> 
> with "System.load" the server prints out the line
> before the native method call and sents back an
> Fault :
> org.apache.ws.axis2.Jni_serviceSkeleton.addieren(II)I
> 
> i do not know how to handle this,
> any help would be appreciated.
> 
> mfg derMark
> 
> 
> 
> 
> 
> 
> 
> 
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