https://github.com/lanhuidong/jni-demo

JNI示例代码
https://github.com/lanhuidong/jni-demo

Last synced: 6 days ago
JSON representation

JNI示例代码

• Host: GitHub
• URL: https://github.com/lanhuidong/jni-demo
• Owner: lanhuidong
• License: apache-2.0
• Created: 2017-05-02T14:58:28.000Z (over 7 years ago)
• Default Branch: master
• Last Pushed: 2020-01-18T02:41:17.000Z (almost 5 years ago)
• Last Synced: 2024-11-09T07:32:47.991Z (2 months ago)
• Language: C
• Size: 10.7 KB
• Stars: 0
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

        
# jni-demo

1. 编写Java类, 定义native方法, 如: com.nexusy.jni.JniService.java

2. 创建C/C++ 头文件, 进入到JniService.java所属package所在目录, 例如:com文件夹所在目录

   Java 9及之前版本: 

   ```shell

   javah com.nexusy.jni.JniService

   ```

   Java 10及之后版本: 

   ```shell

   javac -h . com/nexusy/jni/JniService.java

   ```

   

3. 编写C/C++代码

4. 将C/C++代码编译为动态库

   macOS:

   ```shell

   clang -Wall -I$JAVA_HOME/include/ -I$JAVA_HOME/include/darwin/ -L. -lxxx -shared -undefined dynamic_lookup com_nexusy_jni_JniService.c -o libdemo.jnilib

   ```

   Linux:

   ```shell

   gcc -Wall -D jni_log -shared -fPIC -I$JAVA_HOME/include -I$JAVA_HOME/include/linux -L. -lxxx com_nexusy_jni_JniService.c -o libdemo.so

   ```

5. 运行java Demo

   ```shell

   export LD_LIBRARY_PATH=.:$LD_LIBRARY_PATH

   java -Djava.library.path=. Demo

   ```

   

### 参考资料：

[http://docs.oracle.com/javase/8/docs/technotes/guides/jni/spec/jniTOC.html](http://docs.oracle.com/javase/8/docs/technotes/guides/jni/spec/jniTOC.html)

[https://www.ibm.com/developerworks/java/tutorials/j-jni/j-jni.html](https://www.ibm.com/developerworks/java/tutorials/j-jni/j-jni.html)