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鎻愪緵涓や釜鐗堟湰:
jdk-6u18-linux-i586-rpm.bin 鎴?jdk-6u18-linux-i586.bin
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./jdk-6u18-linux-i586-rpm.bin 鎴?./jdk-6u18-linux-i586.bin
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#set java
JAVA_HOME=/usr/java/jdk1.6.0_18
PATH=$PATH:/$JAVA_HOME/bin
CLASSPATH=.:$JAVA_HOME/lib
JRE_HOME=$JAVA_HOME/jre
export JAVA_HOME PATH CLASSPATH JRE_HOME
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cd /usr/bin
ln -s -f /usr/java/jdk1.6.0_18/jre/bin/java
ln -s -f /usr/java/jdk1.6.0_18/jre/bin/javac
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嫻呮瀽ubuntu 8.10涓嬩嬌鐢╦dk6榪涜jni寮鍙戞祴璇?
luther@gliethttp:~/jni$ vim jusbhid.java
package gliethttp.usb.usbhid; // 浣跨敤鎵撳寘鍛戒護package,灝唈usbhid綾繪墦鍖呭埌gliethttp.usb.usbhid涓?
public class jusbhid
{
public native String usbhid_open(int vid, int pid);
public native String usbhid_sendstring(String id, String command);
static {
System.loadLibrary("usbhid");
}
}
luther@gliethttp:~/jni$ javac jusbhid.java -d . // 灝嗕細鍦ㄥ綋鍓嶇洰褰曠敓鎴愬寘璺緞gliethttp/usb/usbhid鏂囦歡澶?濡傛灉
luther@gliethttp:~/jni$ tree gliethttp/ // 娌℃湁瀹氫箟-d .閭ｄ箞灝嗙洿鎺ュ湪褰撳墠鐩綍鐢熸垚jusbhid.class
gliethttp/
`-- usb
`-- usbhid
`-- jusbhid.class
2 directories, 1 file
luther@gliethttp:~/jni$
luther@gliethttp:~/jni$ javah gliethttp.usb.usbhid.jusbhid // 鐢熸垚jni澶存枃浠?h
luther@gliethttp:~/jni$ ll gliethttp_usb_usbhid_jusbhid.h // 澶存枃浠跺悕涓篻liethttp_usb_usbhid_jusbhid.h
-rw-r--r-- 1 luther luther 788 2009-07-31 12:38 gliethttp_usb_usbhid_jusbhid.h
luther@gliethttp:~/jni$ vim gliethttp_usb_usbhid_jusbhid.h // 鍙互鐪嬪埌鏈夊涓嬪唴瀹?榪欓噷鏉ョ湅,鍔犲叆package gliethttp.usb.usbhid;
/* DO NOT EDIT THIS FILE - it is machine generated */ // 涓庣洿鎺ュ畾涔塸ublic class gliethttp_usb_usbhid_jusbhid鏁堟灉涓鏍?
#include <jni.h> // 綾誨悕涓鍙?_'琛ㄧず鍖呰礬寰?
/* Header for class gliethttp_usb_usbhid_jusbhid */
#ifndef _Included_gliethttp_usb_usbhid_jusbhid
#define _Included_gliethttp_usb_usbhid_jusbhid
#ifdef __cplusplus
extern "C" {
#endif
/*
* Class: gliethttp_usb_usbhid_jusbhid
* Method: usbhid_open
* Signature: (II)Ljava/lang/String;
*/
JNIEXPORT jstring JNICALL Java_gliethttp_usb_usbhid_jusbhid_usbhid_1open
(JNIEnv *, jobject, jint, jint);
/*
* Class: gliethttp_usb_usbhid_jusbhid
* Method: usbhid_sendstring
* Signature: (Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;
*/
JNIEXPORT jstring JNICALL Java_gliethttp_usb_usbhid_jusbhid_usbhid_1sendstring
(JNIEnv *, jobject, jstring, jstring);
#ifdef __cplusplus
}
#endif
#endif
luther@gliethttp:~/jni$ vim jusbhid.c
// [luther.gliethttp] -- 20090731
#include <stdio.h>
#include "gliethttp_usb_usbhid_jusbhid.h"
JNIEXPORT jstring JNICALL Java_gliethttp_usb_usbhid_jusbhid_usbhid_1open(JNIEnv *env, jclass obj, jint vid, jint pid)
{
char buf[512];
printf("vid=0x%04x pid=0x%04x\n", vid, pid);
sprintf(buf, "0#1#2#3#4#5\n");
return (*env)->NewStringUTF(env, buf);
}
JNIEXPORT jstring JNICALL Java_gliethttp_usb_usbhid_jusbhid_usbhid_1sendstring(JNIEnv *env, jclass obj, jstring id, jstring command)
{
int fd;
const char *idv;
const char *commands;
idv = ((*env)->GetStringUTFChars)(env, id, 0);
commands = ((*env)->GetStringUTFChars)(env, command, 0);
fd = atoi(idv);
printf("[%d] %s\n", fd, commands);
return (*env)->NewStringUTF(env, "usbhid_sendstring ok!\n");
}
luther@gliethttp:~/jni$ gcc -fPIC -I /usr/local/jdk1.6.0_14/include -I /usr/local/jdk1.6.0_14/include/linux -shared -o libusbhid.so jusbhid.c
luther@gliethttp:~/jni$ export CLASSPATH=.:$CLASSPATH // 濡傛灉娌℃湁姝ｅ父閰嶇疆jdk鐨勮瘽,闇瑕佸己紜寚瀹氭悳绱㈣礬寰?
luther@gliethttp:~/jni$ sudo vim /etc/profile // 鎴栬呰拷鍔犲涓嬪唴瀹?閰嶇疆jdk鐜
JAVA_HOME=/usr/local/jdk1.6.0_14
JRE_HOME=/usr/local/jdk1.6.0_14/jre
CLASSPATH=.:$JAVA_HOME/lib:$JRE_HOME/lib
export JAVA_HOME JRE_HOME CLASSPATH
luther@gliethttp:~$ source /etc/profile
luther@gliethttp:~/jni$ vim usbhid_jni_example.java
import gliethttp.usb.usbhid.*; // 瀵煎叆CLASSPATH鎼滅儲璺緞涓?璺緞涓篻liethttp/usb/usbhid/涓嬬殑鎵鏈?class鍖?
public class usbhid_jni_example
{
public static void main(String[] args)
{
String rets;
jusbhid hid = new jusbhid();
rets = hid.usbhid_open(0x1234,0x5678);
System.out.printf("%s", rets);
rets = hid.usbhid_sendstring("88", "QWS\r");
System.out.printf("%s", rets);
}
}
luther@gliethttp:~/jni$ javac usbhid_jni_example.java
usbhid_jni_example.java:7: cannot access jusbhid
bad class file: ./jusbhid.java
file does not contain class jusbhid
Please remove or make sure it appears in the correct subdirectory of the classpath.
jusbhid hid = new jusbhid();
^
1 error
luther@gliethttp:~/jni$ mv jusbhid.java jusbhid.java.raw // 蹇呴』鍘繪帀褰撳墠鐩綍jusbhid.java,鍚﹀垯javac灝嗘彁紺轟笂闈㈢殑閿欒
luther@gliethttp:~/jni$ javac usbhid_jni_example.java
luther@gliethttp:~/jni$ export LD_LIBRARY_PATH=.:$LD_LIBRARY_PATH
luther@gliethttp:~/jni$ java usbhid_jni_example
vid=0x1234 pid=0x5678
0#1#2#3#4#5
[88] QWS
usbhid_sendstring ok!
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buy essays uk 2010-07-30 03:04 鍙戣〃璇勮
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