上傳文件

publicclass D_BookServlet extends HttpServlet {
privatestaticfinallong serialVersionUID = 1L;
private D_BookService d_BookService = new D_BookServiceImpl();

@Override
protectedvoid service(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
        String method = request.getParameter("method");
        System.out.println(method);
if ("add".equals(method)) {
            upLoadFile(request,  response);
        }elseif("addbook".equals(method)){
            addBook(request, response);
        }elseif("edit".equals(method)){
            showBook(request, response);
        }

    }
//添加圖書
privatevoid addBook(HttpServletRequest request, HttpServletResponse response) throws IOException{
          D_Book d_Book = new D_Book();
          String product_pic  = request.getParameter("product_pic");
          String product_name  = request.getParameter("product_name");   // varchar(100) NOT NULL,-- 商品名稱
          String fixed_price   = request.getParameter("fixed_price");    // double NOT NULL,-- 商品定價
          String dang_price    = request.getParameter("dang_price");     //double NOT NULL,-- 噹噹價
          String author        = request.getParameter("author") ;        //varchar(200) NOT NULL,-- 作者
          String publishing    = request.getParameter("publishing");     //varchar(200) NOT NULL,-- 出版社
          String publish_time  = request.getParameter("publish_time");   //date NOT NULL,-- 出版時間
          String author_summary= request.getParameter("author_summary"); // varchar(100) NOT NULL,-- 作者簡介
          String description   = request.getParameter("description");    //varchar(100) default NULL,-- 商品描述
          d_Book.setProduct_pic(product_pic);
          d_Book.setProduct_name(product_name);
          d_Book.setDang_price(Double.parseDouble(dang_price));
          d_Book.setFixed_price(Double.parseDouble(fixed_price));
          d_Book.setAuthor(author);
          d_Book.setPublishing(publishing);
          d_Book.setPublish_time(Date.valueOf(publish_time));
          d_Book.setAuthor_summary(author_summary);
          d_Book.setDescription(description);
          d_Book.setScore(1);
          d_BookService.insertD_Book(d_Book);
          response.sendRedirect("/DangDang/Admin/jspfile/editbook.jsp");
    }
//上傳文件
@SuppressWarnings("unchecked")
publicvoid upLoadFile(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException{
// 在解析請求之前先判斷請求類型是否爲文件上傳類型
boolean isMultipart = ServletFileUpload.isMultipartContent(request);
          String url = "";
if(isMultipart){
// 文件上傳處理工廠
              FileItemFactory fileItemFactory = new DiskFileItemFactory();
// 創建文件上傳處理器
              ServletFileUpload servletFileUpload = new ServletFileUpload(fileItemFactory);
// 開始解析請求信息
try {
                    List<FileItem> fileItems = servletFileUpload.parseRequest(request);
// 對所有請求信息進行判斷
for(FileItem fileItem: fileItems){
//如果提交信息爲表單格式設置爲新的url
if (fileItem.isFormField()) {
                                String fieldName = fileItem.getFieldName();
                                String value = fileItem.getString();
                                url += "&" + fieldName + "=" + value;
                       }
//如果提交信息爲文件格式
else {
                                String fileName = fileItem.getName();
                                String basePath = System.getProperty("user.dir").replace("\\", "/")  + "/../webapps/DangDang/BookImage/";
                                File file = new File(basePath, fileName);
if (!file.exists()) {
                                   file.createNewFile();
                                }
                                fileItem.write(file);
                                url += "&product_pic"  + "=" + "BookImage/" + fileName;
                       }
                    }
                } catch (FileUploadException e1) {
                        e1.printStackTrace();
                } catch (Exception e) {
                        e.printStackTrace();
                }
//把設置好的url重新轉發到servlet或函數
              response.sendRedirect("/DangDang/admindbook?method=addbook" + url);
          }

    }

}
//2013-08-26 23:24:17