动态加载dll任意路径加载dll代码,Java代码库,德仔网

代码语言

代码分类

【Java】动态加载dll任意路径加载dll

作者:咏矽 / 发布于2016/12/21/ 693

动态加载dll任意路径加载dll

package com.ctl.test;  
  
import java.io.File;  
import java.io.FileOutputStream;  
import java.io.InputStream;  
import java.util.StringTokenizer;  
  
public class SayHellotoCPP {  
    //LIBFILENAME dll文件的路径  
    static final String LIBFILENAME = "D:\\inca_workspace\\JNI\\bin\\HelloEnd.dll";// dll 文件  
    static {  
        try {  
            // 获取到java.library.path  及系统变量中Path中的内容  
            String libpath = System.getProperty("java.library.path");  
            if (libpath == null || libpath.length() == 0) {  
                throw new RuntimeException("java.library.path is null");  
            }  
            //javaBinPath   jdk的bin目录D:\Program Files\Java\jdk1.6.0_11\bin  
            String javaBinPath = null;  
            StringTokenizer st = new StringTokenizer(libpath,  
                    System.getProperty("path.separator"));  
            if (st.hasMoreElements()) {  
                javaBinPath = st.nextToken();  
            } else {  
                throw new RuntimeException("can not split library path:"  
                        + libpath);  
            }  
            // 把dll文件写入到java.library.path中该dll放在ConvertWord2HM相同目录下，这个可以是你的类名  
            InputStream inputStream = SayHellotoCPP.class.getResourceAsStream(  
                    LIBFILENAME);  
            final File dllFile = new File(LIBFILENAME);  
            if (!dllFile.exists()) {  
                FileOutputStream outputStream = new FileOutputStream(dllFile);  
                byte[] array = new byte[1024];  
                int bytesRead = -1;  
                while ((bytesRead = inputStream.read(array)) != -1) {  
                    outputStream.write(array, 0, bytesRead);  
                }  
                outputStream.flush();  
                outputStream.close();  
            }  
            // 动态加载dll  
            System.load(dllFile.getPath());  
            // 在虚拟机关闭的时候删除dll  
            dllFile.deleteOnExit();  
        } catch (Throwable e) {  
            throw new RuntimeException("load Convert.dll error!", e);  
        }  
  
    }  
  
  
    public SayHellotoCPP() {  
    }  
  
    public native void sayHello(String name);  
  
    public static void main(String[] args) {          
        SayHellotoCPP shp = new SayHellotoCPP();  
        shp.sayHello("World");  
    }  
}

试试其它关键字

同语言下

可能有用的

咏矽贡献的其它代码(11)