Java 解压压缩文件，springMVC 接收压缩文件

解压 zip,rar 类型的压缩文件

1、首先需要 jar 包

ant-1.6.5.jar ：解压zip格式的压缩文件

junrar-0.7.jar ：解压rar 格式

如果是 maven  ：

<dependency>            <groupId>ant</groupId>            <artifactId>ant</artifactId>            <version>1.6.5</version>        </dependency>        <dependency>            <groupId>com.github.junrar</groupId>            <artifactId>junrar</artifactId>            <version>0.7</version>        </dependency>

加入 springMVC的jar包

2、工具类，

2.1、

网上好多，这里是有2个解压zip 的（一个有编码设置，一个没有编码设置）

2个 解压rar的，（一个有编码设置，一个没有编码设置）

import java.io.BufferedInputStream;import java.io.BufferedOutputStream;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.OutputStream;import java.io.OutputStreamWriter;import java.io.UnsupportedEncodingException;import java.io.Writer;import java.util.Enumeration;import java.util.zip.ZipOutputStream;import javax.servlet.http.HttpServletRequest;import org.apache.tools.zip.ZipEntry;import org.apache.tools.zip.ZipFile;import com.github.junrar.Archive;import com.github.junrar.rarfile.FileHeader;public class CompressFileUtils {public static void unZipFiles(HttpServletRequest request, String zipPath,String descDir) throws IOException {unZipFiles(request, new File(zipPath), descDir);}/** * 解压文件到指定目录 *  */@SuppressWarnings("rawtypes")public static void unZipFiles(HttpServletRequest request, File zipFile,String descDir) throws IOException {request.setCharacterEncoding("utf-8");File pathFile = new File(descDir);if (!pathFile.exists()) {pathFile.mkdirs();}ZipFile zip = new ZipFile(zipFile);for (Enumeration entries = zip.getEntries(); entries.hasMoreElements();) {ZipEntry entry = (ZipEntry) entries.nextElement();entry.setUnixMode(644); // 解决linux乱码String zipEntryName = entry.getName();InputStream in = zip.getInputStream(entry);BufferedInputStream bis = new BufferedInputStream(in);String outPath = (descDir + zipEntryName).replaceAll("\\*", "/");;// 判断路径是否存在,不存在则创建文件路径File file = new File(outPath.substring(0, outPath.lastIndexOf('/')));if (!file.exists()) {file.mkdirs();}// 判断文件全路径是否为文件夹,如果是上面已经上传,不需要解压if (new File(outPath).isDirectory()) {continue;}// 输出文件路径信息System.out.println(outPath);OutputStream out = new FileOutputStream(outPath);Writer out1 = new OutputStreamWriter(out, "UTF-8");byte[] buf1 = new byte[1024];int len;while ((len = in.read(buf1)) > 0) {out.write(buf1, 0, len);}in.close();out.close();}System.out.println("******************解压完毕********************");}/** * 根据原始rar路径，解压到指定文件夹下. *  * @param srcRarPath *            原始rar路径 * @param dstDirectoryPath *            解压到的文件夹 * @throws UnsupportedEncodingException */public static void unRarFile(HttpServletRequest request, String srcRarPath,String dstDirectoryPath) throws UnsupportedEncodingException {request.setCharacterEncoding("utf-8");if (!srcRarPath.toLowerCase().endsWith(".rar")) {System.out.println("非rar文件！");return;}File dstDiretory = new File(dstDirectoryPath);if (!dstDiretory.exists()) {// 目标目录不存在时，创建该文件夹dstDiretory.mkdirs();}Archive a = null;try {a = new Archive(new File(srcRarPath));if (a != null) {a.getMainHeader().print(); // 打印文件信息.FileHeader fh = a.nextFileHeader();while (fh != null) {String fileName = fh.getFileNameW().isEmpty()?fh.getFileNameString():fh.getFileNameW();System.out.println("fileName"+fileName);if (fh.isDirectory()) { // 文件夹File fol = new File(dstDirectoryPath + File.separator+ fileName);fol.mkdirs();} else { // 文件File out = new File(dstDirectoryPath + File.separator+ fh.getFileNameString().trim());// System.out.println(out.getAbsolutePath());try {// 之所以这么写try，是因为万一这里面有了异常，不影响继续解压.if (!out.exists()) {if (!out.getParentFile().exists()) {// 相对路径可能多级，可能需要创建父目录.out.getParentFile().mkdirs();}out.createNewFile();}FileOutputStream os = new FileOutputStream(out);a.extractFile(fh, os);os.close();} catch (Exception ex) {ex.printStackTrace();}}fh = a.nextFileHeader();}a.close();}} catch (Exception e) {e.printStackTrace();}}/** * 解压zip文件 *  * @param sourceFile *            ,待解压的zip文件; toFolder,解压后的存放路径 * @throws Exception **/public static void zipToFile(String sourceFile, String toFolder)throws Exception {String toDisk = toFolder;// 接收解压后的存放路径ZipFile zfile = new ZipFile(sourceFile, "GBK");// 连接待解压文件Enumeration zList = zfile.getEntries();// 得到zip包里的所有元素ZipEntry ze = null;byte[] buf = new byte[1024];while (zList.hasMoreElements()) {ze = (ZipEntry) zList.nextElement();if (ze.isDirectory()) {//log.info("打开zip文件里的文件夹:" + ze.getName() + "skipped...");continue;}OutputStream outputStream = null;InputStream inputStream = null;try {// 以ZipEntry为参数得到一个InputStream，并写到OutputStream中outputStream = new BufferedOutputStream(new FileOutputStream(getRealFileName(toDisk, ze.getName())));inputStream = new BufferedInputStream(zfile.getInputStream(ze));int readLen = 0;while ((readLen = inputStream.read(buf, 0, 1024)) != -1) {outputStream.write(buf, 0, readLen);}inputStream.close();outputStream.close();} catch (Exception e) {//log.info("解压失败：" + e.toString());throw new IOException("解压失败：" + e.toString());} finally {if (inputStream != null) {try {inputStream.close();} catch (IOException ex) {}}if (outputStream != null) {try {outputStream.close();} catch (IOException ex) {ex.printStackTrace();}}inputStream = null;outputStream = null;}}zfile.close();}/** *  * 给定根目录，返回一个相对路径所对应的实际文件名. *  * @param zippath *            指定根目录 *  * @param absFileName *            相对路径名，来自于ZipEntry中的name *  * @return java.io.File 实际的文件 */private static File getRealFileName(String zippath, String absFileName) {//log.info("文件名：" + absFileName);String[] dirs = absFileName.split("/", absFileName.length());File ret = new File(zippath);// 创建文件对象if (dirs.length > 1) {for (int i = 0; i < dirs.length - 1; i++) {ret = new File(ret, dirs[i]);}}if (!ret.exists()) {// 检测文件是否存在ret.mkdirs();// 创建此抽象路径名指定的目录}ret = new File(ret, dirs[dirs.length - 1]);// 根据 ret 抽象路径名和 child// 路径名字符串创建一个新 File 实例return ret;} /**      * 根据原始rar路径，解压到指定文件夹下.           * @param srcRarPath 原始rar路径      * @param dstDirectoryPath 解压到的文件夹           */     public static void unRarFile2(String srcRarPath, String dstDirectoryPath) {         if (!srcRarPath.toLowerCase().endsWith(".rar")) {             System.out.println("非rar文件！");             return;         }         System.out.println("dstDirectoryPath"+dstDirectoryPath);         File dstDiretory = new File(dstDirectoryPath);         if (!dstDiretory.exists()) {// 目标目录不存在时，创建该文件夹             dstDiretory.mkdirs();         }         Archive a = null;         try {             a = new Archive(new File(srcRarPath));             if (a != null) {                 //a.getMainHeader().print(); // 打印文件信息.                 FileHeader fh = a.nextFileHeader();                 while (fh != null) {                          //防止文件名中文乱码问题的处理                String fileName = fh.getFileNameW().isEmpty()?fh.getFileNameString():fh.getFileNameW();                     if (fh.isDirectory()) { // 文件夹                     File fol = new File(dstDirectoryPath + File.separator + fileName);                       //  fol.mkdirs();                     } else { // 文件                    File out = new File(dstDirectoryPath + File.separator + fileName.trim());                         try {                              if (!out.exists()) {                                 if (!out.getParentFile().exists()) {// 相对路径可能多级，可能需要创建父目录.                                      out.getParentFile().mkdirs();                                 }                                 out.createNewFile();                             }                             FileOutputStream os = new FileOutputStream(out);                             a.extractFile(fh, os);                             os.close();                         } catch (Exception ex) {                             ex.printStackTrace();                         }                     }                     fh = a.nextFileHeader();                 }                 a.close();             }         } catch (Exception e) {             e.printStackTrace();         }     }}

2.2、

package com.yogapay.boss.utils;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.HashSet;import java.util.Set;import javax.servlet.http.HttpServletRequest;import org.apache.commons.fileupload.disk.DiskFileItem;import org.springframework.web.multipart.MultipartFile;import org.springframework.web.multipart.commons.CommonsMultipartFile;public class UploadUtil {public static File[] resolveCompressUploadFile(HttpServletRequest request,MultipartFile file, String path) throws Exception {request.setCharacterEncoding("utf-8");/* 截取后缀名 */if (file.isEmpty()) {throw new Exception("文件不能为空");}//String fileName = file.getOriginalFilename();System.out.println("sssss"+file.getOriginalFilename());String fileName = new String(file.getOriginalFilename());System.out.println("fileName"+fileName);int pos = fileName.lastIndexOf(".");String extName = fileName.substring(pos + 1).toLowerCase();// 判断上传文件必须是zip或者是rar否则不允许上传if (!extName.equals("zip") && !extName.equals("rar")) {throw new Exception("上传文件格式错误，请重新上传");}// 时间加后缀名保存String saveName = "aaas" + "." + extName;// 根据服务器的文件保存地址和原文件名创建目录文件全路径File pushFile = new File(path + "/" + saveName);File descFile = new File(path);if (!descFile.exists()) {descFile.mkdirs();}// 解压目的文件String descDir = path + "/";System.out.println("desc:" + descDir);file.transferTo(pushFile);// 开始解压zipif (extName.equals("zip")) {CompressFileUtils.zipToFile(path + "/" + saveName, descDir);}else if (extName.equals("rar")) {// 开始解压rarCompressFileUtils.unRarFile2(pushFile.getAbsolutePath(), descDir);}   else {throw new Exception("文件格式不正确不能解压");}// 删除 解压完的压缩文件doDeleteEmptyDir(path + "/" + saveName);return returnFiles(descDir+"");}//返回 File[]public static File[] returnFiles(String strPath) {File dir = new File(strPath);File[] files = dir.listFiles(); // 该文件目录下文件全部放入数组if (files != null) {for (int i = 0; i < files.length; i++) {String fileName = files[i].getName();File f = new File(strPath + File.separator + fileName);System.out.println("文件名称："+fileName);if (f.isDirectory()) {// 如果f是目录File[] newfiles = f.listFiles();return newfiles;}}}return files;}//删除指定文件private static void doDeleteEmptyDir(String dir) {boolean success = (new File(dir)).delete();if (success) {System.out.println("Successfully deleted empty directory: " + dir);} else {System.out.println("Failed to delete empty directory: " + dir);}}// 删除目录下的所有public static boolean deleteDir(File dir) {        if (dir.isDirectory()) {            String[] children = dir.list();            //递归删除目录中的子目录下            for (int i=0; i<children.length; i++) {                boolean success = deleteDir(new File(dir, children[i]));                if (!success) {                    return false;                }            }        }        // 目录此时为空，可以删除        return dir.delete();    }//保存filepublic static void saveFile(File file,String path,String name) throws IOException{FileInputStream fis = null;FileOutputStream fos = null;try {fis = new FileInputStream(file);fos = new FileOutputStream(path + File.separator+ name, true);int count = fis.available();// 获取这个文件里共有多少个字节byte[] b = new byte[count];int len = 0;while ((len = fis.read(b)) != -1) {fos.write(b);}//System.out.println("复制成功！");} catch (FileNotFoundException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();} finally {try {if (fis != null) {fis.close();}if (fos != null) {fos.close();}} catch (Exception e) {e.printStackTrace();}}}}

3、controller

public String msave(final ModelMap model,@RequestParam("zip") MultipartFile zip,HttpServletRequest request) throws SQLException,UnsupportedEncodingException {String path = request.getSession().getServletContext().getRealPath("images"+File.separator+"jieya");// 解压，File[] Files = UploadUtil.resolveCompressUploadFile(request, zip, path);if (UploadUtil.inspectFile(Files)) {// 保存,这里是将解压的文件保存到123目录下for (File file : Files) {System.out.println("file" + file.getName());if (!saveFile(file, request,"123")) {throw new Exception();}}System.out.println("删除文件");// 删除临时目录UploadUtil.deleteDir(new File(path));} else {System.out.println("文件类型错误");throw new Exception();}}

4、jsp

<form action="" method="post" enctype="multipart/form-data">上传压缩文件：<input id="file_upload" name="zip" type="file" /><inputtype="submit" value="提交" /></form>