Java压缩工具详解-CSDN博客

java压缩的功能，可以实现对文件和目录的压缩。

由于java.util.zip.ZipOutputStream有中文乱码问题，所以采用org.apache.tools.zip.ZipOutputStream。
以下是代码：

     Java代码 
     
   
 packagenet.szh.zip; 
  
 importjava.io.BufferedInputStream; 
 importjava.io.File; 
 importjava.io.FileInputStream; 
 importjava.io.FileOutputStream; 
 importjava.util.zip.CRC32; 
 importjava.util.zip.CheckedOutputStream; 
  
 importorg.apache.tools.zip.ZipEntry; 
 importorg.apache.tools.zip.ZipOutputStream; 
  
 publicclassZipCompressor{ 
 staticfinalintBUFFER=8192; 
  
 privateFilezipFile; 
  
 publicZipCompressor(StringpathName){ 
 zipFile=newFile(pathName); 
 } 
  
 publicvoidcompress(StringsrcPathName){ 
 Filefile=newFile(srcPathName); 
 if(!file.exists()) 
 thrownewRuntimeException(srcPathName+"不存在！"); 
 try{ 
 FileOutputStreamfileOutputStream=newFileOutputStream(zipFile); 
 CheckedOutputStreamcos=newCheckedOutputStream(fileOutputStream, 
 newCRC32()); 
 ZipOutputStreamout=newZipOutputStream(cos); 
 Stringbasedir=""; 
 compress(file,out,basedir); 
 out.close(); 
 }catch(Exceptione){ 
 thrownewRuntimeException(e); 
 } 
 } 
  
 privatevoidcompress(Filefile,ZipOutputStreamout,Stringbasedir){ 
 /*判断是目录还是文件*/ 
 if(file.isDirectory()){ 
 System.out.println("压缩："+basedir+file.getName()); 
 this.compressDirectory(file,out,basedir); 
 }else{ 
 System.out.println("压缩："+basedir+file.getName()); 
 this.compressFile(file,out,basedir); 
 } 
 } 
  
 /**压缩一个目录*/ 
 privatevoidcompressDirectory(Filedir,ZipOutputStreamout,Stringbasedir){ 
 if(!dir.exists()) 
 return; 
  
 File[]files=dir.listFiles(); 
 for(inti=0;i<files.length;i++){ 
 /*递归*/ 
 compress(files[i],out,basedir+dir.getName()+"/"); 
 } 
 } 
  
 /**压缩一个文件*/ 
 privatevoidcompressFile(Filefile,ZipOutputStreamout,Stringbasedir){ 
 if(!file.exists()){ 
 return; 
 } 
 try{ 
 BufferedInputStreambis=newBufferedInputStream( 
 newFileInputStream(file)); 
 ZipEntryentry=newZipEntry(basedir+file.getName()); 
 out.putNextEntry(entry); 
 intcount; 
 bytedata[]=newbyte[BUFFER]; 
 while((count=bis.read(data,0,BUFFER))!=-1){ 
 out.write(data,0,count); 
 } 
 bis.close(); 
 }catch(Exceptione){ 
 thrownewRuntimeException(e); 
 } 
 } 
 } 

后来发现原来可以用ant中的org.apache.tools.ant.taskdefs.Zip来实现，更加简单。

     Java代码 
     
   
 packagenet.szh.zip; 
  
 importjava.io.File; 
  
 importorg.apache.tools.ant.Project; 
 importorg.apache.tools.ant.taskdefs.Zip; 
 importorg.apache.tools.ant.types.FileSet; 
  
 publicclassZipCompressorByAnt{ 
  
 privateFilezipFile; 
  
 publicZipCompressorByAnt(StringpathName){ 
 zipFile=newFile(pathName); 
 } 
  
 publicvoidcompress(StringsrcPathName){ 
 Filesrcdir=newFile(srcPathName); 
 if(!srcdir.exists()) 
 thrownewRuntimeException(srcPathName+"不存在！"); 
  
 Projectprj=newProject(); 
 Zipzip=newZip(); 
 zip.setProject(prj); 
 zip.setDestFile(zipFile); 
 FileSetfileSet=newFileSet(); 
 fileSet.setProject(prj); 
 fileSet.setDir(srcdir); 
 //fileSet.setIncludes("**/*.java");包括哪些文件或文件夹eg:zip.setIncludes("*.java"); 
 //fileSet.setExcludes(...);排除哪些文件或文件夹 
 zip.addFileset(fileSet); 
  
 zip.execute(); 
 } 
 } 

测试一下 (把test目录压缩成szhzip.zip)

     Java代码 
     
   
 packagenet.szh.zip; 
  
 publicclassTestZip{ 
 publicstaticvoidmain(String[]args){ 
 ZipCompressorzc=newZipCompressor("E:\\szhzip.zip"); 
 zc.compress("E:\\test"); 
  
 ZipCompressorByAntzca=newZipCompressorByAnt("E:\\szhzipant.zip"); 
 zca.compress("E:\\test"); 
 } 
 } 