src/servlet/AdminGoodsAddServlet.java

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package servlet;

import model.Goods;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import service.GoodsService;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Date;
import java.util.List;

@WebServlet(name = "admin_goods_add",urlPatterns = "/admin/goods_add")
public class AdminGoodsAddServlet extends HttpServlet {
    private GoodsService gService = new GoodsService();
    /**
     * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
     */
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        DiskFileItemFactory factory=new DiskFileItemFactory();
        ServletFileUpload upload = new ServletFileUpload(factory);
        try {
            List<FileItem> list = upload.parseRequest(request);
            Goods g = new Goods();
            for(FileItem item:list) {
                if(item.isFormField()) {
                    switch(item.getFieldName()) {
                        case "name":
                            g.setName(item.getString("utf-8"));
                            break;
                        case "price":
                            g.setPrice(Integer.parseInt(item.getString("utf-8")));
                            break;
                        case "intro":
                            g.setIntro(item.getString("utf-8"));
                            break;
                        case "stock":
                            g.setStock(Integer.parseInt(item.getString("utf-8")));
                            break;
                        case "typeid":
                            g.setTypeid(Integer.parseInt(item.getString("utf-8")));
                            break;
                    }
                }else {
                    if(item.getInputStream().available()<=0)continue;
                    String fileName = item.getName();
                    fileName = fileName.substring(fileName.lastIndexOf("."));
                    fileName = "/"+new Date().getTime()+fileName;
                    String path = this.getServletContext().getRealPath("/picture")+fileName;
                    InputStream in = item.getInputStream();
                    FileOutputStream out = new FileOutputStream(path);
                    byte[] buffer = new byte[1024];