本文實例為大家分享了java壓縮解壓縮工具類的具體代碼,供大家參考,具體內容如下
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package com.wdy.tools.utils.pressuitl; import java.io.bufferedinputstream; import java.io.bufferedoutputstream; import java.io.file; import java.io.fileinputstream; import java.io.filenotfoundexception; import java.io.fileoutputstream; import java.io.ioexception; import java.io.inputstream; import java.io.outputstream; import java.util.zip.zipentry; import java.util.zip.zipfile; import java.util.zip.zipinputstream; import java.util.zip.zipoutputstream; import org.apache.commons.logging.log; import com.wdy.tools.utils.logutil; /** * 壓縮/解壓縮工具類(zip格式) * * @author wdy * @date 2016-08-23 */ public class pressutil { private static final log log = logutil.getlog(pressutil. class ); public static void main(string[] args) { // pressutil.zipmultifile("d:\\nwp_trans\\nwp_h\\", "d:\\nwp_trans\\nwp_h\\wdy.zip"); string sourcefilepath = "d:\\nwp_trans\\nwp_h\\" ; string zipfilepath = "d:\\nwp_trans\\nwp_h\\" ; string filename = "wdy" ; boolean flag = pressutil.filetozip(sourcefilepath, zipfilepath, filename); if (flag){ log.info( "文件打包成功!" ); } else { log.info( "文件打包失敗!" ); } } /** * 將存放在sourcefilepath目錄下的源文件,打包成filename名稱的zip文件,并存放到zipfilepath路徑下 * @param sourcefilepath :待壓縮的文件路徑 * @param zipfilepath :壓縮后存放路徑 * @param filename :壓縮后文件的名稱(不包括擴展名) * @return */ @suppresswarnings ( "resource" ) public static boolean filetozip(string sourcefilepath,string zipfilepath,string filename){ boolean flag = false ; file sourcefile = new file(sourcefilepath); fileinputstream fis = null ; bufferedinputstream bis = null ; fileoutputstream fos = null ; zipoutputstream zos = null ; if (sourcefile.exists() == false ){ log.info( "待壓縮的文件目錄:" +sourcefilepath+ "不存在." ); } else { try { file zipfile = new file(zipfilepath + "/" + filename + ".zip" ); if (zipfile.exists()){ log.info(zipfilepath + "目錄下存在名字為:" + filename + ".zip" + "打包文件." ); } else { file[] sourcefiles = sourcefile.listfiles(); if ( null == sourcefiles || sourcefiles.length< 1 ){ log.info( "待壓縮的文件目錄:" + sourcefilepath + "里面不存在文件,無需壓縮." ); } else { fos = new fileoutputstream(zipfile); zos = new zipoutputstream( new bufferedoutputstream(fos)); byte [] bufs = new byte [ 1024 * 10 ]; for ( int i= 0 ;i<sourcefiles.length;i++){ //創建zip實體,并添加進壓縮包 zipentry zipentry = new zipentry(sourcefiles[i].getname()); zos.putnextentry(zipentry); //讀取待壓縮的文件并寫進壓縮包里 fis = new fileinputstream(sourcefiles[i]); bis = new bufferedinputstream(fis, 1024 * 10 ); int read = 0 ; while ((read=bis.read(bufs, 0 , 1024 * 10 )) != - 1 ){ zos.write(bufs, 0 ,read); } } flag = true ; } } } catch (filenotfoundexception e) { e.printstacktrace(); throw new runtimeexception(e); } catch (ioexception e) { e.printstacktrace(); throw new runtimeexception(e); } finally { //關閉流 try { if ( null != bis) bis.close(); if ( null != zos) zos.close(); } catch (ioexception e) { e.printstacktrace(); throw new runtimeexception(e); } } } return flag; } /** * 壓縮單個文件 * @param filepath 要被壓縮的文件的全路徑,包含文件名d:/hello.txt * @param zippath 壓縮后的全路徑,包含文件名d:/hello.zip */ public static void ziponefile(string filepath, string zippath) { try { file file = new file(filepath); file zipfile = new file(zippath); inputstream input = new fileinputstream(file); zipoutputstream zipout = new zipoutputstream( new fileoutputstream(zipfile)); zipout.putnextentry( new zipentry(file.getname())); int temp = 0 ; while ((temp = input.read()) != - 1 ) { zipout.write(temp); } input.close(); zipout.close(); } catch (exception e) { e.printstacktrace(); } } } |
以上就是本文的全部內容,希望對大家的學習有所幫助,也希望大家多多支持服務器之家。
原文鏈接:https://blog.csdn.net/wdy_2099/article/details/72916282