swfupload多文件上传

Bertha 。 2022-09-21 13:28 156阅读 0赞

package com;  
  
  
import java.io.File;  
import java.io.IOException;  
import java.util.Enumeration;  
  
  
import javax.servlet.ServletConfig;  
import javax.servlet.ServletException;  
import javax.servlet.http.HttpServlet;  
import javax.servlet.http.HttpServletRequest;  
import javax.servlet.http.HttpServletResponse;  
import javax.servlet.http.HttpSession;  
  
  
import net.sf.json.JSONObject;  
  
  
import org.apache.commons.io.FilenameUtils;  
import org.apache.commons.lang.StringUtils;  
import org.apache.commons.lang.time.DateFormatUtils;  
  
  
  
  
import com.oreilly.servlet.MultipartRequest;  
import com.oreilly.servlet.multipart.FileRenamePolicy;  
  
  
/\*\*  
 \* @author   
 \* @version 2011-12-4  
 \*/  
public class FileUploadServlet extends HttpServlet \{  
  
  
private static final long serialVersionUID = -3096800116651263134L;  
//private AttachmentManager am = new AttachmentManager();  
private String fileSizeLimit;  
private File oldFile;  
private Attachment attachment;//附件  
  
  
public void init(ServletConfig config) throws ServletException \{  
this.fileSizeLimit = config.getInitParameter("fileSizeLimit");  
\}  
  
  
public void destroy() \{  
this.fileSizeLimit = null;  
super.destroy();  
\}  
  
  
class MyFileRenamePolicy implements FileRenamePolicy \{  
public File rename(File file) \{  
oldFile = file;  
String fileSaveName = StringUtils.join(new String\[\] \{ java.util.UUID.randomUUID().toString(), ".",  
FilenameUtils.getExtension(file.getName()) \});  
File result = new File(file.getParentFile(), fileSaveName);  
return result;  
\}  
\}  
  
  
@SuppressWarnings("unchecked")  
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException \{  
LogPrinter.info("--- BEGIN DOPOST ---");  
HttpSession session = request.getSession();  
//文件保存位置，当前项目下的upload/attachment  
String uploadDir = "upload" + File.separatorChar + "attachment" + File.separatorChar;  
//每天上传的文件根据日期存放在不同的文件夹  
String autoCreatedDateDirByParttern = "yyyy" + File.separatorChar + "MM" + File.separatorChar + "dd"  
\+ File.separatorChar;  
String autoCreatedDateDir = DateFormatUtils.format(new java.util.Date(), autoCreatedDateDirByParttern);  
String ctxDir = session.getServletContext().getRealPath(String.valueOf(File.separatorChar));  
if (!ctxDir.endsWith(String.valueOf(File.separatorChar))) \{  
ctxDir = ctxDir + File.separatorChar;  
\}  
File savePath = new File(ctxDir + uploadDir + autoCreatedDateDir);  
if (!savePath.exists()) \{  
savePath.mkdirs();  
\}  
LogPrinter.info(savePath.getName()+"======");  
String saveDirectory = ctxDir + uploadDir + autoCreatedDateDir;  
  
if (StringUtils.isBlank(this.fileSizeLimit.toString())) \{  
this.fileSizeLimit = "80";// 默认100M  
\}  
int maxPostSize = Integer.parseInt(this.fileSizeLimit) \* 1024 \* 1024;  
String encoding = "UTF-8";  
FileRenamePolicy rename = new MyFileRenamePolicy();  
MultipartRequest multi = null;  
try \{  
multi = new MultipartRequest(request, saveDirectory, maxPostSize, encoding, rename);  
  
LogPrinter.info(oldFile.getName()+"==================");  
\} catch (IOException e) \{  
e.printStackTrace();  
return;  
\}  
  
  
// 输出  
Enumeration files = multi.getFileNames();  
String fileSavePath = "";  
File newFile = null;  
String contentType = "";  
while (files.hasMoreElements()) \{  
String name = (String) files.nextElement();  
contentType =  multi.getContentType(name);  
//System.out.println("ContentType:"+contentType);  
File f = multi.getFile(name);  
LogPrinter.info(f.getName());  
if (f != null) \{  
newFile = f;  
String fileName = multi.getFilesystemName(name);  
String lastFileName = saveDirectory + "\\\\" + fileName;  
fileSavePath = uploadDir + autoCreatedDateDir + fileName;  
LogPrinter.info("SimpleUploaderServlet");  
LogPrinter.info("文件地址:" + lastFileName);  
LogPrinter.info("保存路径:" + fileSavePath);  
  
\}  
\}  
String oldFileName = oldFile.getName();  
//保存数据库  
LogPrinter.info("开始保存数据库");  
attachment = new Attachment();  
attachment.setFilename(oldFileName);  
attachment.setMemberID("111");  
attachment.setContenttype(contentType);  
attachment.setDescription("这是描述");  
if(newFile!=null)\{  
attachment.setFilelength(newFile.length());  
\}else\{  
attachment.setFilelength(0);  
\}  
attachment.setFilenameindisk(fileSavePath);  
attachment.setNeedwatermark(1);  
JSONObject jsonObj = JSONObject.fromObject(attachment);  
  
//jsonObj = null;  
String returnData = "";  
//传回前台数据  
if(jsonObj!=null)\{  
//取出前台传来的数据  
String saveDataId = request.getParameter("saveDataId");  
jsonObj.accumulate("saveDataId", saveDataId);  
returnData = jsonObj.toString();  
if(returnData.isEmpty())\{  
returnData = "\{\\"error\\":\\"system error\\"\}";  
LogPrinter.error("json为空："+FileUploadServlet.class);  
//删除上传的文件  
newFile.delete();  
\}  
\}else\{  
returnData = "\{\\"error\\":\\"system error\\"\}";  
LogPrinter.error("object转json出错了:"+FileUploadServlet.class);  
//删除上传的文件  
newFile.delete();  
\}  
LogPrinter.debug("jsonObj:"+returnData+"--"+FileUploadServlet.class);  
//am.saveAttachment(attachment);  
//String attachmentID = attachment.getID();  
//System.out.println("附件id:"+attachmentID);  
  
  
//返回前台的数据  
response.setCharacterEncoding("utf-8");  
response.getWriter().print(returnData);  
LogPrinter.info("--- END DOPOST ---");  
\}  
  
  
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException \{  
this.doPost(request, response);  
\}  
  
  
public String getFileSizeLimit() \{  
return fileSizeLimit;  
\}  
  
  
public void setFileSizeLimit(String fileSizeLimit) \{  
this.fileSizeLimit = fileSizeLimit;  
\}  
  
  
\}