文件上传代码

package cn.bd.Servlet;

import java.io.File;
import java.io.IOException;

import java.io.PrintWriter;
import java.util.Iterator;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;

import cn.bd.dao.impl.Product;
import cn.bd.entity.EB_Product;

public class ProductAdd extends HttpServlet {

    /**
     * Constructor of the object.
     */
    public ProductAdd() {
        super();
    }

    /**
     * Destruction of the servlet. <br>
     */
    public void destroy() {
        super.destroy(); // Just puts "destroy" string in log
        // Put your code here
    }

    /**
     * The doGet method of the servlet. <br>
     *
     * This method is called when a form has its tag value method equals to get.
     * 
     * @param request the request send by the client to the server
     * @param response the response send by the server to the client
     * @throws ServletException if an error occurred
     * @throws IOException if an error occurred
     */
    public void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        request.setCharacterEncoding("utf-8");
        response.setContentType("text/html;charset:utf-8");
        response.setCharacterEncoding("utf-8");
        PrintWriter out = response.getWriter();
        
        String productName="";
        String productDetail="";
        String parentId="";
        String productPrice="";
        String productNumber="";
        
        request.setCharacterEncoding("utf-8");
        String uploadFileName=""; //上传的文件名
        String filedName=""; //表单字段元素的name属性
        boolean isMultipart=ServletFileUpload.isMultipartContent(request);
        
        //1.得到product文件夹上传到tomcat服务器后的绝对路径
        String uploadFilePath=request.getSession().getServletContext().getRealPath("images/product/");
        
        if(isMultipart){
            FileItemFactory factory=new DiskFileItemFactory();
            ServletFileUpload upload=new ServletFileUpload(factory);
            try {
                List<FileItem> items=upload.parseRequest(request);
                Iterator<FileItem> iter=items.iterator();
                while(iter.hasNext()){
                    FileItem item=(FileItem)iter.next();
                    if(item.isFormField()){ //普通表单字段返回true,文件表单字段返回false
                        filedName=item.getFieldName();
                        if(filedName.equals("productName")){
                            productName =new String(item.getString().getBytes("iso-8859-1"),"utf-8"); //处理乱码
                        }
                        if(filedName.equals("productDetail")){
                            productDetail =new String(item.getString().getBytes("iso-8859-1"),"utf-8");
                        }
                        if(filedName.equals("parentId")){
                            parentId =new String(item.getString().getBytes("iso-8859-1"),"utf-8");
                        }
                        if(filedName.equals("productPrice")){
                            productPrice =new String(item.getString().getBytes("iso-8859-1"),"utf-8");
                        }
                        if(filedName.equals("productNumber")){
                            productNumber =new String(item.getString().getBytes("iso-8859-1"),"utf-8");
                        }
                    }else{
                        String fileName=item.getName();
                        if(fileName!=null&& !fileName.equals("")){
                            File fullFile=new File(item.getName());
                            File saveFile=new File(uploadFilePath, fullFile.getName());
                            item.write(saveFile);
                            uploadFileName=fullFile.getName();
                            /*System.out.println("上传成功后的文件名是:"+uploadFileName);*/
                        }
                    }
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        /*/EasyBuy/manage/manage-result.jsp*/
        
        
        
        
/*        System.out.println("商品名称:"+productName);
        System.out.println("商品描述:"+productDetail);
        System.out.println("商品父类:"+parentId);
        System.out.println("商品价格:"+productPrice);
        System.out.println("商品数量:"+productNumber);
        System.out.println("图片名称:"+uploadFileName);*/
        
        Product pro=new Product();
        EB_Product p=new EB_Product();
        
        p.setEp_name(productName);
        p.setEp_description(productDetail);
        p.setEp_price(Float.valueOf(productPrice));
        p.setEp_stock(Integer.valueOf(productNumber));
        p.setEp_file_name(uploadFileName);
        
        int result=pro.addProduct(p);//加到数据库商品列表
        
        if(result>0){
            request.getSession().removeAttribute("productList"); //删除会话中的商品列表,防止前台不更新
            out.println("<script type='text/javascript'>alert('新增商品成功!');location.href='manage/product.jsp';</script>"); //后退
            /*response.sendRedirect("manage/product.jsp");*/
        }else{
            out.println("<script type='text/javascript'>alert('新增商品异常!');history.back(-1);</script>"); //后退
            return;
        }
        out.flush();
        out.close();
    }

    /**
     * The doPost method of the servlet. <br>
     *
     * This method is called when a form has its tag value method equals to post.
     * 
     * @param request the request send by the client to the server
     * @param response the response send by the server to the client
     * @throws ServletException if an error occurred
     * @throws IOException if an error occurred
     */
    public void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        doGet(request, response);
    }

    /**
     * Initialization of the servlet. <br>
     *
     * @throws ServletException if an error occurs
     */
    public void init() throws ServletException {
        // Put your code here
    }

}