HTML5+Canvas調(diào)用手機拍照功能實現(xiàn)圖片上傳（下）

$.ajax({ 
        async:false,//是否異步 
        cache:false,//是否使用緩存 
        type: "POST", 
        data:{fileData:fileData,licenceName:licenceName,cust_tax_code:cust_tax_code,phoneNum:phoneNum,state_id:state_id}, 
        dataType: "json", 
        timeout: 1000, 
        contentType : 'application/x-www-form-urlencoded; charset=utf-8', 
        url: $('#ctx').val()+"CustomerCheckServlet?action=uploadLicence", 
        success: function(result){ 
          console.log(result); 
          if(result == true){ 
            alert('Success Upload~~~'); 
          }else if(result == false){ 
            alert('Error Upload~~~'); 
          } 
        }, 
        error: function(){ 
          alert("Error Linking~"); 
        } 
      }); 

/** 
   * 證件上傳 
   * @param request 
   * @param response 
   * @throws IOException 
   */ 
  public void uploadLicence(HttpServletRequest request,HttpServletResponse response) throws IOException{ 
    log.info("=====================uploadLicence"); 
    df = new SimpleDateFormat("yyyy-MM-dd"); 
     
    String cust_tax_code = request.getParameter("cust_tax_code"); 
    String phoneNum = request.getParameter("phoneNum"); 
    String licenceName = request.getParameter("licenceName"); 
     
    String fileData = request.getParameter("fileData");//Base64編碼過的圖片數(shù)據(jù)信息，對字節(jié)數(shù)組字符串進行Base64解碼 
    String imgPath = uploadFile(fileData,liceneName);//進行文件上傳操作，上傳到服務器中存放（這里是上傳到服務器項目文件夾中存到） 
     
    boolean result = false;//最終上傳成功與否的標志 
     
    custCheckInfo = new CustomerCheckInfo(); 
    custCheckInfo.setCust_tax_code(cust_tax_code); 
    custCheckInfo.setPhonenum(phoneNum); 
    custCheckInfo.setUpdate_time(df.format(new Date())); 
     
    boolean save_flag = customerService.saveRegistCertInfo(custCheckInfo);//保存路徑 
     
    //判斷數(shù)據(jù)庫中的路徑是否存在，并且文件夾中的文件是否存在(判斷是否上傳成功的標志) 
    boolean is_success = isSuccessUpload(licenceName, cust_tax_code, phoneNum); 
    if(save_flag && is_success){ 
      result = true; 
    } 
     
    //如果證件上傳成功，則記錄到記錄表中 
    if(result){ 
      StateRecordInfo record = new StateRecordInfo(); 
      record.setCust_tax_code(cust_tax_code); 
      record.setPhonenum(phoneNum); 
      record.setState_id(state_id); 
       
      saveStateRecord(record);//執(zhí)行狀態(tài)保存操作 
    } 
     
    System.out.println("===result:"+result); 
    PrintWriter pw = response.getWriter(); 
    pw.print(result); 
    pw.close(); 
  } 

/** 
   * 文件上傳 
   * @param fileData 
   * @param fileName 
   * @return 
   */ 
  public String uploadFile(String fileData,String fileName){ 
    //在自己的項目中構造出一個用于存放用戶照片的文件夾 
    String imgPath = this.getServletContext().getRealPath("/uploads/"); 
    //如果此文件夾不存在則創(chuàng)建一個 
    File f = new File(imgPath); 
    if(!f.exists()){ 
      f.mkdir(); 
    } 
    //拼接文件名稱，不存在就創(chuàng)建 
    imgPath = imgPath + "/" + fileName + ".jpg"; 
    f = new File(imgPath); 
    if(!f.exists()){ 
      f.mkdir(); 
    } 
     
    log.info("====文件保存的位置："+imgPath); 
     
    //使用BASE64對圖片文件數(shù)據(jù)進行解碼操作 
    BASE64Decoder decoder = new BASE64Decoder(); 
    try { 
      //通過Base64解密，將圖片數(shù)據(jù)解密成字節(jié)數(shù)組 
      byte[] bytes = decoder.decodeBuffer(fileData); 
      //構造字節(jié)數(shù)組輸入流 
      ByteArrayInputStream bais = new ByteArrayInputStream(bytes); 
      //讀取輸入流的數(shù)據(jù) 
      BufferedImage bi = ImageIO.read(bais); 
      //將數(shù)據(jù)信息寫進圖片文件中 
      ImageIO.write(bi, "jpg", f);// 不管輸出什么格式圖片，此處不需改動 
      bais.close(); 
    } catch (IOException e) { 
      log.error("e:{}",e); 
    } 
    return imgPath; 
  } 

/** 
   * 判斷是否成功上傳 
   * @return 
   */ 
  public boolean isSuccessUpload(String licenceName,String cust_tax_code,String phonenum){ 
    boolean flag = false; 
    String licencePath = "";//證件圖片上傳成功之后保存的路徑 
     
    custCheckInfo = customerService.getCustomerCheckInfo(cust_tax_code, phonenum); 
    licencePath = custCheckInfo.getTax_regist_cert(); 
   
    //判斷證件路徑不為空并且在上傳存放的文件夾中存在，就表明以上傳成功 
    File f = new File(licencePath); 
    if(licencePath.length() >0 && f.exists()){ 
      flag = true; 
    } 
    return flag; 
  }