老师，我这个怎么显示不支持get呢？

来源：3-4 项目作业

热爱编程学习

2020-12-23 23:30:48

# 具体遇到的问题

# 报错信息的截图

# 相关课程内容截图

# 尝试过的解决思路和结果

# 粘贴全部相关代码，切记添加代码注释（请勿截图）

package com.zuoye;

import java.io.IOException;
import java.util.List;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
* Servlet implementation class Greate
*/
@WebServlet("/Gr")
public class Greate extends HttpServlet {
private static final long serialVersionUID = 1L;

/**
* @see HttpServlet#HttpServlet()
*/
public Greate() {
super();
// TODO Auto-generated constructor stub
}

/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
request.setCharacterEncoding("utf-8");
String empid=request.getParameter("goodsId");
String empme=request.getParameter("goodsName");
String empType=request.getParameter("goodsType");
String empice=request.getParameter("price");
String emption=request.getParameter("description");
//System.out.println(empid);
zuoye emp=new zuoye(Integer.parseInt(empid),empme,empType,Float.parseFloat(empice),emption);
ServletContext conu=request.getServletContext();
List zuoye=(List)conu.getAttribute("wname");
zuoye.add(emp);
conu.setAttribute("wname", zuoye);
request.getRequestDispatcher("/goods.jsp").forward(request, response);

}

}

package com.zuoye;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
* Servlet implementation class zy
*/
@WebServlet("/zy")
public class zy extends HttpServlet {
private static final long serialVersionUID = 1L;

/**
* @see HttpServlet#HttpServlet()
*/
public zy() {
super();
// TODO Auto-generated constructor stub
}

/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
ServletContext conn=request.getServletContext();
if(conn.getAttribute("wname")==null){
List list=new ArrayList();
list.add(new zuoye(1001 ,"格力空调","家用电器",30000f,"铂金气质，空警和一"));
list.add(new zuoye(1002 ,"LV","服装",180000f,"生活不是一场,旅行"));
conn.setAttribute("wname", list);
}
request.getRequestDispatcher("/goods.jsp").forward(request, response);
}

}

package com.zuoye;

public class zuoye {
private Integer id;
private String name;
private String type;
private float price;
private String moom;

public zuoye(Integer id,String name,String type,float price,String moom) {
this.id=id;
this.name=name;
this.type=type;
this.price=price;
this.moom=moom;
}

public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public float getPrice() {
return price;
}
public void setPrice(float price) {
this.price = price;
}

public String getMoom() {
return moom;
}

public void setMoom(String moom) {
this.moom = moom;
}

}

<%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="UTF-8" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html>
<html>

<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width,initial-scale=1">
<title>商品列表</title>
<link href="css/bootstrap.css" type="text/css" rel="stylesheet">
</link>
<script type="text/javascript" src="js/jquery-1.11.1.min.js"></script>
<script type="text/javascript" src="js/bootstrap.js"></script>
<style type="text/css">
.pagination {
margin: 0px
}

.pagination>li>a,
.pagination>li>span {
margin: 0 5px;
border: 1px solid #dddddd;
}

.glyphicon {
margin-right: 3px;
}

.form-control[readonly] {
cursor: pointer;
background-color: white;
}

#dlgPhoto .modal-body {
text-align: center;
}

.preview {

max-width: 500px;
}
</style>
<script>
$(function () {

$("#btnAdd").click(function () {
$('#dlgForm').modal()
});
})
</script>
</head>

<body>
<div class="container">
<div class="row">
<h1 style="text-align: center">IMOOC商品信息表</h1>
<div class="panel panel-default">
<div class="clearfix panel-heading ">
<div>
<label class="form-inline">
<div class="form-group" style="width: 850px;">
<button class="btn btn-primary" id="btnAdd">新增
</button>
</div>
<div class="form-group pull-right">
<form action="" method="post">
<input type="text" class="form-control" id="searchById" name="id" placeholder="根据商品id进行查询">
<button type="submit" class="btn btn-primary">查询</button>
</form>
</div>
</label>
</div>
<table class="table table-bordered table-hover">
<thead>
<tr>
<th>序号</th>
<th>商品编号</th>
<th>商品名称</th>
<th>商品类别</th>
<th>价格</th>
<th>备注</th>
<th> </th>
</tr>
</thead>
<c:forEach items="${applicationScope.wname}" var="c" varStatus="idx">
<tbody>
<tr>
<th>${idx.index+1 }</th>
<th>${c.id }</th>
<th>${c.name }</th>
<th>${c.type }</th>
<th>${c.price }</th>
<th>${c.moom }</th>
<th> </th>
</tr>
</c:forEach>
</tbody>
</table>
</div>
</div>
</div>

<div class="modal fade" tabindex="-1" role="dialog" id="dlgForm">
<div class="modal-dialog" role="document">
<div class="modal-content">
<div class="modal-header">
<button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span>
</button>
<h4 class="modal-title">新增商品</h4>
</div>
<div class="modal-body">
<form action="/jintan/Gr" method="post">
<div class="form-group">
<label>商品编号</label>
<input type="text" name="goodsId" class="form-control" id="empno" placeholder="请输入商品编号">
</div>
<div class="form-group">
<label>商品名称</label>
<input type="text" name="goodsName" class="form-control" id="ename" placeholder="请输入商品名称">
</div>
<div class="form-group">
<label>商品类别</label>
<select id="gname" name="goodsType" class="form-control">
<option selected="selected">服装</option>
<option value="家用">家用电器</option>
<option value="生活">生活用品</option>
</select>
</div>
<div class="form-group">
<label>价格</label>
<input type="text" name="price" class="form-control" id="sal" placeholder="请输入价格">
</div>
<div class="form-group">
<label>备注</label>
<input type="text" name="description" class="form-control" id="sal" placeholder="请输入备注">
</div>
<div class="form-group" style="text-align: center;">
<button type="submit" class="btn btn-primary">保存</button>
</div>
</form>
</div>
</div>
</div>
</div>
</body>

</html>