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	    <meta name="description" content="一、说明
rar格局的紧缩包收费，java支撑zip格局的紧缩和解压
二、东西类
importjava.io.*;importjava.util.Enumeration;importjava.util.List;importjava.util.zip.ZipEntry;importjava.util.zip.ZipFile;importjava.util.zip.Zi...">
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                                    <h1 class="mg-bt35">Java操作zip-压缩和解压文件</h1>
                                    <span>时间：2023-05-16</span>
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                                <div class="edit2 mg-bt60 wow slideUp">
                                                                        <p>一、说明<br />
rar格局的紧缩包收费，java支撑zip格局的紧缩和解压<img class="aligncenter size-full wp-image-5006" src="https://zzzjtd.com/wp-content/uploads/2019/08/222.jpg" alt="Java" width="436" height="306" /><br />
二、东西类<br />
importjava.io.*;importjava.util.Enumeration;importjava.util.List;importjava.util.zip.ZipEntry;importjava.util.zip.ZipFile;importjava.util.zip.ZipOutputStream;publicclassZipUtils{privatestaticfinalintBUFFER_SIZE=2*1024;/**<br />
*zip解压<br />
*@paramsrcFilezip源文件<br />
*@paramdestDirPath解压后的方针文件夹<br />
*@throwsRuntimeException解压失利会抛出运行时反常<br />
*/publicstaticvoidunZip(FilesrcFile,StringdestDirPath)throwsRuntimeException{longstart=System.currentTimeMillis();//判别源文件是否存在if(!srcFile.exists()){thrownewRuntimeException(srcFile.getPath()+&#8221;所指文件不存在&#8221;);<br />
}//开始解压ZipFilezipFile=null;try{<br />
zipFile=newZipFile(srcFile);<br />
Enumerationentries=zipFile.entries();while(entries.hasMoreElements()){<br />
ZipEntryentry=(ZipEntry)entries.nextElement();<br />
System.out.println(&#8220;解压&#8221;+entry.getName());//如果是文件夹，就创立个文件夹if(entry.isDirectory()){<br />
StringdirPath=destDirPath+&#8221;/&#8221;+entry.getName();<br />
Filedir=newFile(dirPath);<br />
dir.mkdirs();<br />
}else{//如果是文件，就先创立一个文件，然后用io流把内容copy曩昔FiletargetFile=newFile(destDirPath+&#8221;/&#8221;+entry.getName());//确保这个文件的父文件夹必需要存在if(!targetFile.getParentFile().exists()){<br />
targetFile.getParentFile().mkdirs();<br />
}<br />
targetFile.createNewFile();//将紧缩文件内容写入到这个文件中InputStreamis=zipFile.getInputStream(entry);<br />
FileOutputStreamfos=newFileOutputStream(targetFile);intlen;byte[]buf=newbyte[BUFFER_SIZE];while((len=is.read(buf))!=-1){<br />
fos.write(buf,0,len);<br />
}//关流次序，先打开的后封闭fos.close();<br />
is.close();<br />
}<br />
}longend=System.currentTimeMillis();<br />
System.out.println(&#8220;解压完成，耗时：&#8221;+(end-start)+&#8221;ms&#8221;);<br />
}catch(Exceptione){thrownewRuntimeException(&#8220;unziperrorfromZipUtils&#8221;,e);<br />
}finally{if(zipFile!=null){try{<br />
zipFile.close();<br />
}catch(IOExceptione){<br />
e.printStackTrace();<br />
}<br />
}<br />
}<br />
}/**<br />
*紧缩成ZIP办法<br />
*@paramsrcFiles需要紧缩的文件列表<br />
*@paramout紧缩文件输出流<br />
*@throwsRuntimeException紧缩失利会抛出运行时反常<br />
*/publicstaticvoidtoZip(ListsrcFiles,OutputStreamout)throwsException{longstart=System.currentTimeMillis();<br />
ZipOutputStreamzos=null;try{<br />
zos=newZipOutputStream(out);for(FilesrcFile:srcFiles){byte[]buf=newbyte[BUFFER_SIZE];<br />
zos.putNextEntry(newZipEntry(srcFile.getName()));intlen;<br />
FileInputStreamin=newFileInputStream(srcFile);while((len=in.read(buf))!=-1){<br />
zos.write(buf,0,len);<br />
}<br />
zos.closeEntry();<br />
in.close();<br />
}longend=System.currentTimeMillis();<br />
System.out.println(&#8220;紧缩完成，耗时：&#8221;+(end-start)+&#8221;ms&#8221;);<br />
}catch(Exceptione){thrownewRuntimeException(&#8220;ziperrorfromZipUtils&#8221;,e);<br />
}finally{if(zos!=null){try{<br />
zos.close();<br />
}catch(Exceptione){<br />
e.printStackTrace();<br />
}<br />
}<br />
}<br />
}<br />
}<br />
三、使用东西类紧缩和解压文件<br />
importcom.szfore.utils.ZipUtils;importjava.io.File;importjava.io.FileOutputStream;importjava.io.OutputStream;importjava.util.ArrayList;importjava.util.List;publicclassTestZip{publicstaticvoidmain(String[]args)throwsException{//testToZip();testUnzip();<br />
}/**<br />
*测试紧缩文件<br />
*/publicstaticvoidtestToZip()throwsException{<br />
Filefile1=newFile(&#8220;c:\\1.txt&#8221;);<br />
Filefile2=newFile(&#8220;c:\\2.txt&#8221;);<br />
Listfiles=newArrayList();<br />
files.add(file1);<br />
files.add(file2);<br />
OutputStreamout=newFileOutputStream(&#8220;c:\\1.zip&#8221;);<br />
ZipUtils.toZip(files,out);<br />
}/**<br />
*测试解压文件<br />
*@throwsException<br />
*/publicstaticvoidtestUnzip()throwsException{<br />
FilesrcFile=newFile(&#8220;c:\\2.zip&#8221;);<br />
StringdestDirPath=&#8221;c:\\&#8221;;<br />
ZipUtils.unZip(srcFile,destDirPath);<br />
}<br />
}</p>


		
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