Java怎么把文件夹打成压缩包并导出
Java怎么把文件夹打成压缩包并导出
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把文件夹打成压缩包并导出
1.打压缩包业务类
@ControllerpublicclassAdminController{privateStringfilePath=AdminController.class.getResource("/").getPath().split("WEB-INF")[0]+"upload/";@RequestMapping(value="export_zip.htm",method={RequestMethod.GET,RequestMethod.POST})publicvoidzipwordDownAction(HttpServletRequestrequest,HttpServletResponseresponse)throwsException{//打包文件的存放路径ZipCompressorByAntzc=newZipCompressorByAnt(filePath+"/file.zip");//需要打包的文件路径zc.compress(filePath+"/file/");StringcontentType="application/octet-stream";try{//导出压缩包download(request,response,"upload/file.zip",contentType,encodeChineseDownloadFileName(request,"file.zip"));}catch(Exceptione){request.getSession().setAttribute("msg","暂无内容");}//如果原压缩包存在,则删除Filefile=newFile(filePath+"/file.zip");if(file.exists()){file.delete();}}/***下载文件*/publicstaticvoiddownload(HttpServletRequestrequest,HttpServletResponseresponse,StringstoreName,StringcontentType,StringrealName)throwsException{response.setContentType("text/html;charset=UTF-8");request.setCharacterEncoding("UTF-8");BufferedInputStreambis=null;BufferedOutputStreambos=null;StringctxPath=FileUtil.class.getResource("/").getPath().split("WEB-INF")[0];StringdownLoadPath=ctxPath+storeName;longfileLength=newFile(downLoadPath).length();response.setContentType(contentType);response.setHeader("Content-disposition","attachment;filename="+newString(realName.getBytes("utf-8"),"ISO8859-1"));response.setHeader("Content-Length",String.valueOf(fileLength));bis=newBufferedInputStream(newFileInputStream(downLoadPath));bos=newBufferedOutputStream(response.getOutputStream());byte[]buff=newbyte[2048];intbytesRead;while(-1!=(bytesRead=bis.read(buff,0,buff.length))){bos.write(buff,0,bytesRead);}bis.close();bos.close();}/***对文件流输出下载的中文文件名进行编码屏蔽各种浏览器版本的差异性*/publicstaticStringencodeChineseDownloadFileName(HttpServletRequestrequest,StringpFileName)throwsUnsupportedEncodingException{Stringfilename=null;Stringagent=request.getHeader("USER-AGENT");if(null!=agent){if(-1!=agent.indexOf("Firefox")){//Firefoxfilename="=?UTF-8?B?"+(newString(org.apache.commons.codec.binary.Base64.encodeBase64(pFileName.getBytes("UTF-8"))))+"?=";}elseif(-1!=agent.indexOf("Chrome")){//Chromefilename=newString(pFileName.getBytes(),"ISO8859-1");}else{//IE7+filename=java.net.URLEncoder.encode(pFileName,"UTF-8");filename=StringUtils.replace(filename,"+","%20");//替换空格}}else{filename=pFileName;}returnfilename;}
2.调用工具类
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();}}
生成zip文件并导出
总结一下
关于Java下载zip文件并导出的方法，浏览器导出。
StringdownloadName="下载文件名称.zip";downloadName=BrowserCharCodeUtils.browserCharCodeFun(request,downloadName);//下载文件名乱码问题解决//将文件进行打包下载try{OutputStreamout=response.getOutputStream();byte[]data=createZip("/fileStorage/download");//服务器存储地址response.reset();response.setHeader("Content-Disposition","attachment;fileName="+downloadName);response.addHeader("Content-Length",""+data.length);response.setContentType("application/octet-stream;charset=UTF-8");IOUtils.write(data,out);out.flush();out.close();}catch(Exceptione){e.printStackTrace();}
获取下载zip文件流
publicbyte[]createZip(StringsrcSource)throwsException{ByteArrayOutputStreamoutputStream=newByteArrayOutputStream();ZipOutputStreamzip=newZipOutputStream(outputStream);//将目标文件打包成zip导出Filefile=newFile(srcSource);a(zip,file,"");IOUtils.closeQuietly(zip);returnoutputStream.toByteArray();}
publicvoida(ZipOutputStreamzip,Filefile,Stringdir)throwsException{//如果当前的是文件夹，则进行进一步处理if(file.isDirectory()){//得到文件列表信息File[]files=file.listFiles();//将文件夹添加到下一级打包目录zip.putNextEntry(newZipEntry(dir+"/"));dir=dir.length()==0?"":dir+"/";//循环将文件夹中的文件打包for(inti=0;i<files.length;i++){a(zip,files[i],dir+files[i].getName());//递归处理}}else{//当前的是文件，打包处理//文件输入流BufferedInputStreambis=newBufferedInputStream(newFileInputStream(file));ZipEntryentry=newZipEntry(dir);zip.putNextEntry(entry);zip.write(FileUtils.readFileToByteArray(file));IOUtils.closeQuietly(bis);zip.flush();zip.closeEntry();}}
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