多文件上传

一、到http://www.uploadify.com/下载最新版，我的是jquery.uploadify-v1.6.2 (MIT)
二、下载包解压放在对应位置
三、HttpServlet，如下：

Java代码

1. protectedvoiddoPost(HttpServletRequestreq,HttpServletResponseresp)
2. throwsServletException,IOException{
3. ServletContextservletContext=this.getServletConfig().getServletContext();
4. ApplicationContextappContext=WebApplicationContextUtils.getWebApplicationContext(servletContext);
5. UploadFileDaodao=(UploadFileDao)appContext.getBean("uploadFileDao");
6. StringsavePath=this.getServletConfig().getServletContext()
7. .getRealPath("/")
8. +UPLOAD_FOLDER;
9. DiskFileItemFactoryfac=newDiskFileItemFactory();
10. ServletFileUploadupload=newServletFileUpload(fac);
11. ListfileList=null;
12. try{
13. fileList=upload.parseRequest(req);
14. }catch(FileUploadExceptionex){
15. ex.printStackTrace();
16. return;
17. }
18. Iterator<FileItem>it=fileList.iterator();
19. StringBuildersb=newStringBuilder();
20. while(it.hasNext()){
21. FileItemitem=it.next();
22. if(!item.isFormField()){
23. Stringname=item.getName();
24. longsize=item.getSize();
25. Stringtype=item.getContentType();
26. if(StringUtils.isBlank(name))
27. continue;
28. FilesaveFile=newFile(savePath+name);
29. try{
30. item.write(saveFile);
31. Stringformat="yyyy/MM/ddhh:mm:ss";
32. UploadFileuploadFile=newUploadFile();
33. uploadFile.setCreateTime(DateUtil.getCurDateString(format));
34. uploadFile.setName(UUID.randomUUID().toString());
35. uploadFile.setOrgName(name);
36. uploadFile.setType(type);
37. uploadFile.setSize(size);
38. dao.save(uploadFile);
39. if(StringUtils.isBlank(sb.toString()))
40. sb.append(uploadFile.getId());
41. else
42. sb.append(";"+uploadFile.getId());
43. }catch(Exceptione){
44. e.printStackTrace();
45. }
46. }
47. }
49. resp.getWriter().print(sb.toString());
50. }

protected void doPost(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {
        ServletContext servletContext = this.getServletConfig().getServletContext();
        ApplicationContext appContext = WebApplicationContextUtils.getWebApplicationContext(servletContext);
        UploadFileDao dao = (UploadFileDao) appContext.getBean("uploadFileDao");
        String savePath = this.getServletConfig().getServletContext()
        .getRealPath("/")
        + UPLOAD_FOLDER;
        DiskFileItemFactory fac = new DiskFileItemFactory();
        ServletFileUpload upload = new ServletFileUpload(fac);
        List fileList = null;
        try {
            fileList = upload.parseRequest(req);
        } catch (FileUploadException ex) {
            ex.printStackTrace();
            return;
        }
        Iterator<FileItem> it = fileList.iterator();
        StringBuilder sb = new StringBuilder();
        while(it.hasNext()){
            FileItem item =  it.next();
            if(!item.isFormField()){
                String name = item.getName();
                long size = item.getSize();
                String type = item.getContentType();
                if(StringUtils.isBlank(name))
                    continue;
                File saveFile = new File(savePath+name);
                try {
                    item.write(saveFile);
                    String format = "yyyy/MM/dd hh:mm:ss";
                    UploadFile uploadFile = new UploadFile();
                    uploadFile.setCreateTime(DateUtil.getCurDateString(format));
                    uploadFile.setName(UUID.randomUUID().toString());
                    uploadFile.setOrgName(name);
                    uploadFile.setType(type);
                    uploadFile.setSize(size);
                    dao.save(uploadFile);
                    if(StringUtils.isBlank(sb.toString()))
                        sb.append(uploadFile.getId());
                    else
                        sb.append(";"+uploadFile.getId());
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }
       
        resp.getWriter().print(sb.toString());
    }

四、对应调用页面，jsp：
引入必要的css和javascript
头部：

Java代码

1. //uploadfile
2. $("#fileUpload").fileUpload({
3. 'uploader':'${ctx}/js/uploadify/uploader.swf',
4. 'cancelImg':'${ctx}/js/uploadify/cancel.png',
5. 'script':'${ctx}/file/upload',
6. 'folder':'upload',
7. 'multi':true,
8. 'buttonText':'SelectFiles',
9. 'displayData':'speed',
10. onComplete:function(event,queueID,fileObj,response,data){
11. varfm=document.forms[0];
12. varfileInputs=document.getElementsByName("logos");
13. for(vari=0;i<fileInputs.length;i++){
14. fm.removeChild(fileInputs[i]);
15. }
16. //生成隐藏字段
17. varfileInput=document.createElement("input");
18. fileInput.setAttribute("name","logos");
19. fileInput.setAttribute("value",fileObj.name);
20. fileInput.setAttribute("type","hidden");
21. fm.appendChild(fileInput);
22. }
23. });

//upload file
            $("#fileUpload").fileUpload({
                'uploader': '${ctx}/js/uploadify/uploader.swf',
                'cancelImg': '${ctx}/js/uploadify/cancel.png',
                'script': '${ctx}/file/upload',
                'folder': 'upload',
                'multi': true,
                'buttonText': 'Select Files',
                'displayData': 'speed',
                onComplete:    function(event,queueID,fileObj,response,data) {
                                var fm = document.forms[0];
                                var fileInputs = document.getElementsByName("logos");
                                for(var i=0;i<fileInputs.length;i++){
                                    fm.removeChild(fileInputs[i]);
                                }
                                //生成隐藏字段
                                var fileInput = document.createElement("input");
                                fileInput.setAttribute("name","logos");
                                fileInput.setAttribute("value",fileObj.name);
                                fileInput.setAttribute("type","hidden");
                                fm.appendChild(fileInput);
                }
            });

页面body:

Java代码

1. <divid="fileUpload">Youhaveaproblemwithyourjavascript</div>
2. <ahref="javascript:$('#fileUpload').fileUploadStart()">StartUpload</a>|<ahref="javascript:$('#fileUpload').fileUploadClearQueue()">ClearQueue</a>

引用自：http://bluelzx.javaeye.com/blog/360055