Java把文件夹打成压缩包并导出

短命女 2022-06-07 12:00 256阅读 0赞

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(HttpServletRequest 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, response, "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 String(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();  
        }  
    }