本文实例为大家分享了Java压缩解压缩工具类的具体代码，供大家参考，具体内容如下

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; /** * 压缩/解压缩工具类（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("文件打包失败!"); } } /** * 将存放在sourceFilePath目录下的源文件，打包成fileName名称的zip文件，并存放到zipFilePath路径下 * @param sourceFilePath :待压缩的文件路径 * @param zipFilePath :压缩后存放路径 * @param fileName :压缩后文件的名称(不包括扩展名) * @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("待压缩的文件目录："+sourceFilePath+"不存在."); }else{ try { File zipFile = new File(zipFilePath + "/" + fileName +".zip"); if(zipFile.exists()){ log.info(zipFilePath + "目录下存在名字为:" + fileName +".zip" +"打包文件."); }else{ File[] sourceFiles = sourceFile.listFiles(); if(null == sourceFiles || sourceFiles.length<1){ log.info("待压缩的文件目录：" + sourceFilePath + "里面不存在文件，无需压缩."); }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++){ //创建ZIP实体，并添加进压缩包 ZipEntry zipEntry = new ZipEntry(sourceFiles[i].getName()); zos.putNextEntry(zipEntry); //读取待压缩的文件并写进压缩包里 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{ //关闭流 try { if(null != bis) bis.close(); if(null != zos) zos.close(); } catch (IOException e) { e.printStackTrace(); throw new RuntimeException(e); } } } return flag; } /** * 压缩单个文件 * @param filePath 要被压缩的文件的全路径，包含文件名d:/hello.txt * @param zipPath 压缩后的全路径，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(); } }}

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