1 private String treatFile(File file, int type, 2 Remotecertapply remotecertapply)//要上傳的對象 3 { 4 if (file == null) 5 return "圖片文件為空"; 6 if (file.length() > FILEMAXSIZE) 7 return "圖片文件過大"; 8 9 //輸入流 10 InputStream is = null; 11 12 //輸出流 13 OutputStream os = null; 14 try 15 { 16 String ext; 17 is = new FileInputStream(file); 18 19 //得到文件類型 20 FileType fileType = FileTypeJudge.getType(is); 21 22 //判斷文件格式 23 if (FileType.JPEG.equals(fileType)) 24 ext = ".jpg"; 25 else if (FileType.PNG.equals(fileType)) 26 ext = ".png"; 27 else 28 ext = "圖片文件不是JPG/PNG格式"; 29 if (!ext.equals(".jpg") && !ext.equals(".png")) 30 return ext; 31 // 獲取ServletAction上下文對象，getServletContext()獲取Servlet上下文對象，getRealPath("upload")獲取upload的絕對路徑 32 String root = ServletActionContext.getServletContext() 33 .getRealPath("/remoteuserimages"); 34 35 //獲得文件名 36 String fileName = user.getId() + "_" + type 37 + System.currentTimeMillis() + ext; 38 39 //定義了一個byte類型的數組，數組長度為1024,buffer，有利於較少內存碎片,超過這個值就會報溢出的異常 40 byte[] buffer = new byte[1024]; 41 int length = 0; 42 43 //關閉輸入流 44 is.close(); 45 is = new FileInputStream(file); 46 os = new FileOutputStream(new File(root, fileName)); 47 48 //循環讀取文件 49 while (-1 != (length = is.read(buffer, 0, buffer.length))) 50 os.write(buffer, 0, length); 51 //存儲上傳的文件 52 if (type == 1) 53 remotecertapply.setOrgnaid_imagepath(fileName); 54 else if (type == 2) 55 remotecertapply.setBusinessid_imagepath(fileName); 56 else if (type == 3) 57 remotecertapply.setTaxno_imagepath(fileName); 58 else 59 { 60 remotecertapply.setPersonid_imagepath(fileName); 61 remotecertapply.setIdtype(0); 62 } 63 64 return null; 65 } 66 catch (IOException e) 67 { 68 e.printStackTrace(); 69 return "圖片文件處理時發生IO錯誤"; 70 } 71 finally 72 { 73 if (is != null) 74 try 75 { 76 is.close(); 77 } 78 catch (IOException e) 79 { 80 } 81 if (os != null) 82 try 83 { 84 os.close(); 85 } 86 catch (IOException e) 87 { 88 } 89 } 90 }