java resource jar_发布jar包到服务器读取resource目录下文件

packageblockchaincode.utils;importjava.io.BufferedInputStream;importjava.io.BufferedOutputStream;importjava.io.File;importjava.io.FileNotFoundException;importjava.io.FileOutputStream;importjava.io.IOException;importjava.util.Enumeration;importjava.util.jar.JarEntry;importjava.util.jar.JarFile;importjava.util.jar.JarOutputStream;importjava.util.zip.ZipEntry;importorg.slf4j.Logger;importorg.slf4j.LoggerFactory;/*** jar包压缩跟解压工具类

*@authorWangSong

**/

public classJarUtil {private static Logger log = LoggerFactory.getLogger(JarUtil.class);privateJarUtil(){}/*** 复制jar by JarFile

*@paramsrc

*@paramdes

*@throwsIOException*/

public static void copyJarByJarFile(File src , File des) throwsIOException{//重点

JarFile jarFile = newJarFile(src);

Enumeration jarEntrys =jarFile.entries();

JarOutputStream jarOut= new JarOutputStream(new BufferedOutputStream(newFileOutputStream(des)));byte[] bytes = new byte[1024];while(jarEntrys.hasMoreElements()){

JarEntry entryTemp=jarEntrys.nextElement();

jarOut.putNextEntry(entryTemp);

BufferedInputStream in= newBufferedInputStream(jarFile.getInputStream(entryTemp));int len = in.read(bytes, 0, bytes.length);while(len != -1){

jarOut.write(bytes,0, len);

len= in.read(bytes, 0, bytes.length);

}

in.close();

jarOut.closeEntry();

log.error("复制完成: " +entryTemp.getName());

}

jarOut.finish();

jarOut.close();

jarFile.close();

}/*** 解压jar文件by JarFile

*@paramsrc

*@paramdesDir

*@throwsFileNotFoundException

*@throwsIOException*/

public static void unJarByJarFile(File src , File desDir) throwsFileNotFoundException, IOException{

JarFile jarFile= newJarFile(src);

Enumeration jarEntrys =jarFile.entries();if(!desDir.exists())

desDir.mkdirs();//建立用户指定存放的目录

byte[] bytes = new byte[1024];while(jarEntrys.hasMoreElements()){

ZipEntry entryTemp=jarEntrys.nextElement();

File desTemp= new File(desDir.getAbsoluteFile() + File.separator +entryTemp.getName());if(entryTemp.isDirectory()){ //jar条目是空目录

if(!desTemp.exists())

desTemp.mkdirs();

log.error("makeDir" +entryTemp.getName());

}else{ //jar条目是文件//因为manifest的Entry是"META-INF/MANIFEST.MF",写出会报"FileNotFoundException"

File desTempParent =desTemp.getParentFile();if(!desTempParent.exists())desTempParent.mkdirs();

BufferedInputStream in= newBufferedInputStream(jarFile.getInputStream(entryTemp));

BufferedOutputStream out= new BufferedOutputStream(newFileOutputStream(desTemp));int len = in.read(bytes, 0, bytes.length);while(len != -1){

out.write(bytes,0, len);

len= in.read(bytes, 0, bytes.length);

}

in.close();

out.flush();

out.close();

log.error("解压完成: " +entryTemp.getName());

}

}

jarFile.close();

}

}