Java如何把文件夹打成压缩包并导出

Java如何把文件夹打成压缩包并导出

目录把文件夹打成压缩包并导出1.打压缩包业务类2.调用工具类生成zip文件并导出总结一下获取下载zip文件流

把文件http://夹打成压缩包并导出

1.打压缩包业务类

@Controller

public class AdminController {

private String filePath = AdminController.class.getResource("/").getPath().split("WEB-INF")[0]+ "upload/";

@RequestMapping(value = "export_zip.htm", method = {RequestMethod.GET, RequestMethod.POST })

public void zipwordDownAction(Hthttp://tpServletRequest request,HttpServletResponse response) throws Exception {

//打包文件的存放路径

ZipCompressorByAnt zc = new ZipCompressorByAnt(filePath+ "/file.zip");

//需要打包的文件路径

zc.compress(filePath+ "/file/");

String contentType = "application/octet-stream";

try {

//导出压缩包

download(request, respoKpPmfREKevnse, "upload/file.zip", contentType,encodeChineseDownloadFileName(request, "file.zip"));

} catch (Exception e) {

request.getSession().setAttribute("msg", "暂无内容");

}

//如果原压缩包存在,则删除

File file=new File(filePath+ "/file.zip");

if(file.exists()){

file.delete();

}

}

/**

* 下载文件

*/

public static void download(HttpServletRequest request,HttpServletResponse response, String storeName, String contentType,String realName) throws Exception {

response.setContentType("text/html;charset=UTF-8");

request.setCharacterEncoding("UTF-8");

BufferedInputStream bis = null;

BufferedOutputStream bos = null;

String ctxPath =FileUtil.class.getResource("/").getPath().split("WEB-INF")[0];

String downLoadPath = ctxPath + storeName;

long fileLength = new File(downLoadPath).length();

response.setContentType(contentType);

response.setHeader("Content-disposition", "attachment; filename="

+ new String(realName.getBytes("utf-8"), "ISO8859-1"));

response.setHeader("Content-Length", String.valueOf(fileLength));

bis = new BufferedInputStream(new FileInputStream(downLoadPath));

bos = new BufferedOutputStream(response.getOutputStream());

byte[] buff = new byte[2048];

int bytesRead;

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

*/

public static String encodeChineseDownloadFileName(HttpServletRequest request, String pFileName) throws UnsupportedEncodingException {

String filename = null;

String agent = request.getHeader("USER-AGENT");

if (null != agent){

if (-1 != agent.indexOf("Firefox")) {//Firefox

filename = "=?UTF-8?B?" + (new String(org.apache.commons.codec.binary.Base64.encodeBase64(pFileName.getBytes("UTF-8"))))+ "?=";

}else if (-1 != agent.indexOf("Chrome")) {//Chrome

filename = new Stringhttp://(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;

}

return filename;

}

2.调用工具类

import java.io.File;

import org.apache.tools.ant.Project;

import org.apache.tools.ant.taskdefs.Zip;

import org.apache.tools.ant.types.FileSet;

public class ZipCompressorByAnt {

private File zipFile;

public ZipCompressorByAnt(String pathName) {

zipFile = new File(pathName);

}

public void compress(String srcPathName) {

File srcdir = new File(srcPathName);

if (!srcdir.exists())

throw new RuntimeException(srcPathName + "不存在！");

Project prj = new Project();

Zip zip = new Zip();

zip.setProject(prj);

zip.setDestFile(zipFile);

FileSet fileSet = new FileSet();

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。

String downloadName = "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 {

OutputStream out = 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 (Exception e) {

e.printStackTrace();

}

获取下载zip文件流

public byte[] createZip(String srcSource) throws Exception{

ByteArrayOutputStream outputStream = new ByteArrayOutputStream();

ZipOutputStream zip = new ZipOutputStream(outputStream);

//将目标文件打包成zip导出

File file = new File(srcSource);

a(zip,file,"");

IOUtils.closeQuietly(zip);

return outputStream.toByteArray();

}

public void a(ZipOutputStream zip, File file, String dir) throws Exception {

//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(new ZipEntry(dir + "/"));

dir = dir.length() == 0 ? "" : dir + "/";

//循环将文件夹中的文件打包

for (int i = 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

BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));

ZipEntry entry = new ZipEntry(dir);

zip.putNextEntry(entry);

zip.write(FileUtils.readFileToByteArray(file));

IOUtils.closeQuietly(bis);

zip.flush();

zip.closeEntry();

}

}

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