Subject: How to get a String from JNI? 2005-09-09 - By Edward King
Back
I want to get a returned String from JNI, but I don't know how to do it, my
code are follows:
//MyNative.java
public class MyNative{
public String test1(String s){
return test11(s);
}
private native String test11(String s);
static{
System.loadLibrary( "MyNative" );
}
public static void main( String[] args ){
MyNative obj = new MyNative();
String c=obj.test1("abc");
System.out.println("--"+c);
}
}
//MyNative.h
/* DO NOT EDIT THIS FILE - it is machine generated */
#include <jni.h>
/* Header for class MyNative */
#ifndef _Included_MyNative
#define _Included_MyNative
#ifdef __cplusplus
extern "C" {
#endif
/*
* Class: MyNative
* Method: test11
* Signature: (Ljava/lang/String;)Ljava/lang/String;
*/
JNIEXPORT jstring JNICALL Java_MyNative_test11
(JNIEnv *, jobject, jstring);
#ifdef __cplusplus
}
#endif
#endif
//MyNative.c
#include <stdio.h>
#include "MyNative.h"
JNIEXPORT jstring JNICALL Java_MyNative_test11
(JNIEnv *env, jobject obj, jstring s){
//How to realize return String to Java???,such as return a string "hello
world",how to realize this function,please give example code.
}
Thanks in advance!
===========================================================================
To unsubscribe, send email to listserv@(protected) and include in the body
of the message "signoff J2EE-INTEREST". For general help, send email to
listserv@(protected) and include in the body of the message "help".
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=gb2312">
<META content="MSHTML 6.00.2800.1515" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT face="Times New Roman" color=#0000ff size=2>I want to get a returned
String from JNI, but I don't know how to do it, my code are follows:</FONT><FONT
face="Times New Roman" color=#0000ff size=2><BR>//MyNative.java<BR>public class
MyNative{ <BR> public String test1(String s){<BR>
return test11(s);<BR> }<BR> private native String test11(String
s); <BR> static{<BR> System.loadLibrary( "MyNative"
);<BR> } <BR> public static void main( String[] args
){<BR> MyNative obj = new MyNative();<BR>
String c=obj.test1("abc");<BR>
System.out.println("--"+c);<BR> }<BR>}</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face="Times New Roman" color=#0000ff size=2>//MyNative.h<BR>/* DO NOT
EDIT THIS FILE - it is machine generated */<BR>#include <jni.h><BR>/*
Header for class MyNative */<BR>#ifndef _Included_MyNative<BR>#define
_Included_MyNative<BR>#ifdef __cplusplus<BR>extern "C"
{<BR>#endif<BR>/*<BR> * Class: MyNative<BR> *
Method: test11<BR> * Signature:
(Ljava/lang/String;)Ljava/lang/String;<BR> */<BR>JNIEXPORT jstring JNICALL
Java_MyNative_test11<BR> (JNIEnv *, jobject, jstring);</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face="Times New Roman" color=#0000ff size=2>#ifdef
__cplusplus<BR>}<BR>#endif<BR>#endif</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face="Times New Roman" color=#0000ff size=2>//MyNative.c<BR>#include
<stdio.h><BR>#include "MyNative.h"<BR>JNIEXPORT jstring JNICALL
Java_MyNative_test11<BR> (JNIEnv *env, jobject obj, jstring
s){<BR> //How to realize return String to Java???,such as
return a string "hello world",how to realize this function,please give
example code.</FONT></DIV>
<DIV><FONT face="Times New Roman" color=#0000ff size=2>}</FONT></DIV>
<DIV><FONT face="Times New Roman" color=#0000ff size=2></FONT> </DIV>
<DIV><FONT face="Times New Roman" color=#0000ff size=2>Thanks in advance!</DIV>
<DIV><BR></DIV></FONT></BODY></HTML>
===========================================================================
To unsubscribe, send email to listserv@(protected) and include in the body
of the message "signoff J2EE-INTEREST". For general help, send email to
listserv@(protected) and include in the body of the message "help".
<p>
|
|
