使用Apache的upload组件问题

[cataclyam2000]

使用Apache的upload组件问题上传文件到服务器,由于文件是分块上传的,需要将多次上交的FileItem写入到一个文件中.由于上传文件很大,不能写入多个小文件后再一齐组装.服务器端的代码:

List /* FileItem */items = upload.parseRequest(request);
				// Process the uploaded items
				Iterator iter = items.iterator();
				FileItem fileItem;
				File fout;
				out.println("[parseRequest.jsp]  Let's read input files ...");
				while (iter.hasNext()) {
					fileItem = (FileItem) iter.next();

					if (fileItem.isFormField()) {
						out.println("[parseRequest.jsp] (form field) "
								+ fileItem.getFieldName() + " = "
								+ fileItem.getString());
//						System.out.println("[parseRequest.jsp] (form field) "
//								+ fileItem.getFieldName() + " = "
//								+ fileItem.getString());

						// If we receive the md5sum parameter, we've read
						// finished to read the current file. It's not
						// a very good (end of file) signal. Will be better in
						// the future ... probably !
						// Let's put a separator, to make output easier to read.
						if (fileItem.getFieldName().equals("md5sum[]")) {
							out
									.println("[parseRequest.jsp]  ------------------------------ ");
						}
					} else {
						// Ok, we've got a file. Let's process it.
						// Again, for all informations of what is exactly a
						// FileItem, please
						// have a look to
						// http://jakarta.apache.org/commons/fileupload/
						//
						out.println("[parseRequest.jsp] FieldName: "
								+ fileItem.getFieldName());
						out.println("[parseRequest.jsp] File Name: "
								+ fileItem.getName());
						out.println("[parseRequest.jsp] ContentType: "
								+ fileItem.getContentType());
						out.println("[parseRequest.jsp] Size (Bytes): "
								+ fileItem.getSize());
						// If we are in chunk mode, we add ".partN" at the end
						// of the file, where N is the chunk number.
						String uploadedFilename = fileItem.getName()
								+ (numChunk > 0 ? ".part" + numChunk : "");
						fout = new File(ourTempDirectory
								+ (new File(uploadedFilename)).getName());
						out.println("[parseRequest.jsp] File Out: "
								+ fout.toString());
						// write the file
						System.out.println("uploadedFilename:"+uploadedFilename);
						
						fileItem.write(fout);					
						
						
//						FileInputStream fis = new FileInputStream(ourTempDirectory
//								+ fileItem.getName());
//						
//						FileOutputStream fos = new FileOutputStream(
//								ourTempDirectory + fileItem.getName());
//						
//						byte[] byteBuff = new byte[1024];
//						int nbBytes = 0;
//						while ((nbBytes = fis.read(byteBuff)) >= 0) {
//							// out.println("[parseRequest.jsp] " + " Nb
//							// bytes read: " + nbBytes);
//							fos.write(byteBuff, 0, nbBytes);
//						}
//						fis.close();
//						fout.delete();
//						receive(request, response);

						// ////////////////////////////////////////////////////////////////////////////////////
						// Chunk management: if it was the last chunk, let's
						// recover the complete file
						// by concatenating all chunk parts.
						//
						/*
						if (bLastChunk) {
							System.out.println("bLastChunk:"+bLastChunk);
							out
									.println("[parseRequest.jsp]  Last chunk received: let's rebuild the complete file ("
											+ fileItem.getName() + ")");
							// First: construct the final filename.
							FileInputStream fis;
							FileOutputStream fos = new FileOutputStream(
									ourTempDirectory + fileItem.getName());
							int nbBytes;
							byte[] byteBuff = new byte[1024];
							String filename;
							for (int i = 1; i <= numChunk; i += 1) {
								filename = fileItem.getName() + ".part" + i;
								out.println("[parseRequest.jsp] "
										+ "  Concatenating " + filename);
								fis = new FileInputStream(ourTempDirectory
										+ filename);
								while ((nbBytes = fis.read(byteBuff)) >= 0) {
									// out.println("[parseRequest.jsp] " + " Nb
									// bytes read: " + nbBytes);
									fos.write(byteBuff, 0, nbBytes);
								}
								fis.close();
							}
							fos.close();
						}*/

						// End of chunk management
						// ////////////////////////////////////////////////////////////////////////////////////

						fileItem.delete();
					}
				}// while

[swoky]

先上传，再合并吧

[cataclyam2000]

120分就这样摆着也太浪费了,改为散分贴,大家给些java资源或者java论坛,网址吧.

[East271536394]

package com.upload;

import com.jspsmart.upload.SmartUpload;
/*****
*
*author:East(张栋芳)
*date: 2008-7-19
*note: 上传文件和下载文件
*/

public class Upload {

/***
*
*上传文件平
*/
public void upLoad(){
// 新建一个SmartUpload对象
SmartUpload supload = new SmartUpload();
// 上传初始化
supload.initialize(pageContext);
// 限制每个上传文件的最大长度
supload.setMaxFileSize(10000);
// 限制总上传数据的长度。
supload.setTotalMaxFileSize(20000);
// 设定允许上传的文件（通过扩展名限制）,仅允许doc,txt文件。
supload.setAllowedFilesList("doc,txt");
// 设定禁止上传的文件（通过扩展名限制）,禁止上传带有exe,bat,
//jsp,htm,html扩展名的文件和没有扩展名的文件。
supload.setDeniedFilesList("exe,bat,jsp,html,htm");
// 上传文件
supload.upload();
// 将上传文件全部保存到指定目录
int count = supload.save("/upload");

com.jspsmart.upload.SmartFile file = supload.getFiles().getFile(0);
//文件名
String fileName = file.getFieldName();
}

/***
*
*下载文件
*/
public void downLoad(){
SmartUpload su = new SmartUpload();
su.initialize(pageContext);
// 设定contentDisposition为null以禁止浏览器自动打开文件，
//保证点击链接后是下载文件。若不设定，则下载的文件扩展名为
//doc时，浏览器将自动用word打开它。扩展名为pdf时，
//浏览器将用acrobat打开

su.setContentDisposition(null);
su.downloadFile("/upload/test.doc");
}

}

[Dantin]

先上传，再合并吧

[無名VF]

UP

[goodmrning]

先上传，再合并.

[superzhao123]

http://www.java2s.com/

jf

[dinghun8leech]

我这边的情况是用iis转发到tomcat的，使用apache.common里的那个组件上传文件时只要文件一大于60k，必然会出什么分步上传啥啥啥的异常，害的我只能用最老土的方法从request里获取Servlet字节流来上传

[IThurricane]

学习学习