从上一个AddFood.jsp调转到这里就不好使了。
这是AddFood.jsp:
添加菜品
菜品添加
| 菜品 ID | | | 菜 名 | | | 口 味 |
香辣
微辣
麻辣
不辣
| | 菜品图片 | | | 价 格 | | | 菜品描述 |
|
|
这是FoodAddServlet:
package com.eravik;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
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.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
public class FoodAddServlet extends HttpServlet {
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
try {
Map map = new HashMap();
DiskFileItemFactory diskFileItemFactory = new DiskFileItemFactory();
ServletFileUpload servletFileUpload = new ServletFileUpload(diskFileItemFactory);
List list = servletFileUpload.parseRequest(request);
String url = null;
for (FileItem fileItem : list) {
if(fileItem.isFormField()){
String name = fileItem.getFieldName();
String value = fileItem.getString("UTF-8");
System.out.println(name+" "+value);
map.put(name, value);
}else{
String fileName = fileItem.getName();
if(fileName !=null && !"".equals(fileName)){
String uuidFileName = UploadUtils.getUUIDFileName(fileName);
InputStream is = fileItem.getInputStream();
String path = this.getServletContext().getRealPath("/upload");
url = path+"\\"+uuidFileName;
OutputStream os = new FileOutputStream(url);
int len = 0;
byte[] b = new byte[1024];
while((len = is.read(b))!=-1){
os.write(b, 0, len);
}
is.close();
os.close();
}
}
}
System.out.println(map);
List foodList = (List) this.getServletContext().getAttribute("list");
for(Food u :foodList){
if(u.getFoodName().equals(map.get("username"))){
request.setAttribute("msg", " ");
request.getRequestDispatcher("/regist.jsp").forward(request, response);
return ;
}
}
Food f = new Food();
f.setFoodId(map.get("id"));
f.setFoodName(map.get("foodName"));
f.setFoodTaste(map.get("taste"));
f.setFoodPath(url);
f.setFoodPrice(map.get("price"));
f.setFoodDescribe("description");
foodList.add(f);
for (Food u : foodList) {
System.out.println(u);
}
this.getServletContext().setAttribute("list", foodList);
request.getSession().setAttribute("username", f.getFoodName());
response.sendRedirect(request.getContextPath()+"/showFoodList.jsp");
} catch (FileUploadException e) {
e.printStackTrace();
}
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doGet(request, response);
}
}
而且后台显示FoodAddServlet并没有运行，不知道怎么回事？ |
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