关于Commons-fileupload的上传组件.doc

关于Commons-fileupload的上传组件Apache的上传组件其它已经被封装到Struts那中去了，我在网上找到了一些文章介绍它是如何上传文件的，自己跟了一下源码也写了一个上传的实例，仅供参考！一、JSP页面如下：Html代码 1 3 4 5 6 7 8 9 10 11 12 13 下载 二、上传的Servlet如下：Java代码 14 /* 15 * Apache组件上传 16 * 17 * author 18 * date 2010-10-30 19 */ 20 public class UploadServlet extends HttpServlet 21 22 private static final long serialVersionUID = 5827821285414610443L; 23 24 public void doGet(HttpServletRequest request, HttpServletResponse response) 25 throws ServletException, IOException 26 this.doPost(request, response); 27 28 29 public void doPost(HttpServletRequest request, HttpServletResponse response) 30 throws ServletException, IOException 31 / 上传文件目录 32 String uploadDir = this.getServletContext().getRealPath(/uploadDir); 33 DiskFileItemFactory factory = new DiskFileItemFactory(); 34 / 设置内存区块大小4KB 35 factory.setSizeThreshold(4 * 1024); 36 / 设置暂存容器，当上传文件大于设置的内存块大小时，用暂存容器做中转 37 factory.setRepository(new File(this.getServletContext().getRealPath( 38 /temp); 39 ServletFileUpload fileUpload = new ServletFileUpload(factory); 40 fileUpload.setSizeMax(1024 * 1024 * 100); 41 fileUpload.setFileSizeMax(1024 * 1024 * 10); 42 List fileItemList = null; 43 44 try 45 fileItemList = fileUpload.parseRequest(request); 46 catch (FileUploadException e) 47 e.printStackTrace(); 48 49 Iterator fileItemIterator = fileItemList.iterator(); 50 FileItem fileItem = null; 51 while (fileItemIterator.hasNext() 52 fileItem = fileItemIterator.next(); 53 / 普通文件框上传 54 if (fileItem.isFormField() 55 String filedName = fileItem.getFieldName(); 56 String filedValue = fileItem.getString(GBK);/ 编码格式 57 System.out.println(filedName);/ 文件框名称 58 System.out.println(filedValue);/ 文件的值 59 else 60 String filedName = fileItem.getFieldName();/ 文件上传框的名称 61 / 获取文件上传的文件名 62 String OriginalFileName = takeOutFileName(fileItem.getName(); 63 System.out.println(原始文件名：+OriginalFileName); 64 if (!.equals(OriginalFileName) 65 / 根据上传的文件名重新命名 66 String newFileName = getNewFileName(OriginalFileName); 67 System.out.println(重新名：+newFileName); 68 File writeToFile = new File(uploadDir + File.separator 69 + newFileName); 70 try 71 fileItem.write(writeToFile); 72 catch (Exception e) 73 e.printStackTrace(); 74 75 76 77 78 79 80 private String takeOutFileName(String filePath) 81 String fileName = filePath; 82 if (null != filePath & !.equals(filePath) 83 int port = filePath.lastIndexOf( + 1); 84 if(port != -1) 85 fileName = filePath.substring(port); 86 87 88 return fileName; 89 90 91 private String getNewFileName(String originalFileName) 92 StringBuffer newFileName = new StringBuffer(); 93 if (null != originalFileName & !.equals(originalFileName) 94 int port = originalFileName.lastIndexOf(.); 95 String type = ; 96 String fileName = ; 97 if (port != -1) 98 type = originalFileName.substring(port + 1); 99 fileName = originalFileName.substring(0, port); 100 else 101 fileName = originalFileName; 102 103 StringBuffer suffix = new StringBuffer(_); 104 suffix.append(Calendar.getInstance().getTimeInMillis(); 105 suffix.append(_); 106 suffix.append(new Random().nextInt(100); 107 newFileName.append(fileName); 108 newFileName.append(suffix); 109 newFileName.append(.); 110 newFileName.append(type); 111 112 return newFileName.toString(); 113 114 115 三、下载的Servlet如下：Java代码 116 /* 117 * Apache组件下载 118 * 119 * author 120 * date 2010-10-30 121 */ 122 public class DownLoadServlet extends HttpServlet 123 124 public void doGet(HttpServletRequest request, HttpServletResponse response) 125 throws ServletException, IOException 126 this.doPost(request, response); 127 128 129 public void doPost(HttpServletRequest request, HttpServletResponse response) 130 throws ServletException, IOException 131 String filePath = D:Tomcatapache-tomcat-6.0.26webappsApacheUploaduploadDir; 132 String fileName = 2010年10月安排2_1288447490125_56.txt; 133 String Originalname = 2010年10月安排2.txt; 134 response.setContentType(application/octet-stream); 135 String isoFileName = new String(Originalname.getBytes(GB2312), 136 ISO8859-1); 137 response.setHeader(Content-Disposition, attachment; filename= 138 + isoFileName); 139 ServletOutputStream out = response.getOutputStream(); 140 BufferedOutputStream bufferOut = new BufferedOutputStream(out); 141 FileInputStream inputStream = new FileInputStream(new File(filePath, 142 fileName); 143 BufferedInputStream bufferInput = new BufferedInputStream(inputStream); 144 byte buffer = new byte5 * 1024; 145 int length = 0; 146 while (length = bufferInput.read(buffer) != -1) 147 bufferOut.write(buffer, 0, length); 148 149 bufferInput.close(); 150 inputStream.close(); 151 bufferOut.close(); 152 out.close(); 153 154 155 Se