本篇內容介紹了“Java怎么把文件夾打成壓縮包并導出”的有關知識，在實際案例的操作過程中，不少人都會遇到這樣的困境，接下來就讓小編帶領大家學習一下如何處理這些情況吧！希望大家仔細閱讀，能夠學有所成！
@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(HttpServletRequest request,HttpServletResponse response) throws Exception {
//打包文件的存放路徑
ZipCompressorByAnt zc = new ZipCompressorByAnt(filePath+ "/file.zip");
//需要打包的文件路徑
zc.compress(filePath+ "/file/");
String contentType = "application/octet-stream";
try {
//導出壓縮包
download(request, response, "upload/file.zip", contentType,encodeChineseDownloadFileName(request, "file.zip"));
} catch (Exception e) {
request.getSession().setAttribute("msg", "暫無內容");
}
//如果原壓縮包存在,則刪除
File file=new File(filePath+ "/file.zip");
if(file.exists()){
file.delete();
}
}
/**
* 下載文件
*/
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();
}
/**
* 對文件流輸出下載的中文文件名進行編碼 屏蔽各種瀏覽器版本的差異性
*/
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 String(pFileName.getBytes(), "ISO8859-1");
} else {//IE7+
filename = java.net.URLEncoder.encode(pFileName, "UTF-8");
filename = StringUtils.replace(filename, "+", "%20");//替換空格
}
} else {
filename = pFileName;
}
return filename;
}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夾 eg:zip.setIncludes("*.java");
//fileSet.setExcludes(...); 排除哪些文件或文件夾
zip.addFileset(fileSet);
zip.execute();
}
}關于Java下載zip文件并導出的方法，瀏覽器導出。
String downloadName = "下載文件名稱.zip";
downloadName = BrowserCharCodeUtils.browserCharCodeFun(request, downloadName);//下載文件名亂碼問題解決
//將文件進行打包下載
try {
OutputStream out = response.getOutputStream();
byte[] data = createZip("/fileStorage/download");//服務器存儲地址
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();
}public byte[] createZip(String srcSource) throws Exception{
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
ZipOutputStream zip = new ZipOutputStream(outputStream);
//將目標文件打包成zip導出
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 {
//如果當前的是文件夾，則進行進一步處理
if (file.isDirectory()) {
//得到文件列表信息
File[] files = file.listFiles();
//將文件夾添加到下一級打包目錄
zip.putNextEntry(new ZipEntry(dir + "/"));
dir = dir.length() == 0 ? "" : dir + "/";
//循環將文件夾中的文件打包
for (int i = 0; i < files.length; i++) {
a(zip, files[i], dir + files[i].getName()); //遞歸處理
}
} else { //當前的是文件，打包處理
//文件輸入流
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();
}
}“Java怎么把文件夾打成壓縮包并導出”的內容就介紹到這里了，感謝大家的閱讀。如果想了解更多行業相關的知識可以關注億速云網站，小編將為大家輸出更多高質量的實用文章！
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