首页新闻找找看学习计划

求教这个问题:This is class jsp04.Zj04_sj1_reply, using the POST method

0
悬赏园豆:20 [已解决问题] 解决于 2015-11-24 19:23

由jsp页面跳转到servlet的时候,浏览器中出现了这行文字,求教原因(PS:servlet中已经重写了doGet和doPost方法)

servlet代码如下:

 1 package jsp04;
 2 
 3 import java.io.IOException;
 4 import java.io.PrintWriter;
 5 import java.text.SimpleDateFormat;
 6 import java.util.Date;
 7 import java.util.Map;
 8 
 9 import javax.servlet.ServletException;
10 import javax.servlet.http.HttpServlet;
11 import javax.servlet.http.HttpServletRequest;
12 import javax.servlet.http.HttpServletResponse;
13 import javax.servlet.jsp.jstl.sql.Result;
14 
15 public class Zj04_sj1_reply extends HttpServlet {
16 
17     public void doGet(HttpServletRequest request, HttpServletResponse response)
18             throws ServletException, IOException {
19         this.doPost(request, response);
20     }
21 
22     public void doPost(HttpServletRequest request, HttpServletResponse response)
23             throws ServletException, IOException {
24 
25         response.setContentType("text/html;charset=gbk");
26         PrintWriter out = response.getWriter();
27         
28         //获取用户、时间
29         String userName=request.getSession().getAttribute("userName").toString();
30         Date now=new Date();
31         SimpleDateFormat sdf=new SimpleDateFormat("yyy-MM-dd HH:mm:ss");
32         String commentTime=sdf.format(now);
33         
34         //获取页面数据
35         String theme=request.getParameter("theme");
36         String reply=request.getParameter("reply");
37         
38         //更新comment表
39         String sql="insert into comment values(?,?,?)";
40         Object params[]={userName,commentTime,reply};
41         DBHelp.runSelectSql2(sql, params);
42         
43         //更新news表
44         //先查询作者和创建日期
45         String sql2="select * from news where title=?";
46         Object params2[]={theme};
47         Result result=DBHelp.runSelectSql(sql2, params2);
48         Map row=result.getRows()[0];
49         int answerNumber=Integer.parseInt(row.get("answerNumber").toString());
50         int visitNumber=Integer.parseInt(row.get("visitNumber").toString());
51             //更改
52         answerNumber=answerNumber+1;
53         visitNumber=visitNumber+1;
54         String sql3="update news set answerNumber=?" +
55                 " and visitNumber=? and finalCommentator=? and finalCommentTime=? " +
56                 "where title=?";
57         Object params3[]={answerNumber,visitNumber,userName,commentTime,theme};
58         DBHelp.runSelectSql2(sql3, params3);
59         
60         //更新forum表
61         //从session中获取话题
62         String topic=request.getAttribute("topic").toString();
63         String sql4="update forum set answerNumber=(1+(select answerNumber from forum where topic=?)) where topic=?";
64         Object params4[]={topic,topic};
65         DBHelp.runSelectSql2(sql4, params4);
66         
67         //转发到Zj04_sj1_theme.jsp
68         request.getRequestDispatcher("jsp04/Zj04_sj1_theme.jsp");
69     }
70 
71 }

 

jsp代码如下:

 1 <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
 2 <%
 3 String path = request.getContextPath();
 4 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
 5 %>
 6 
 7 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
 8 <html>
 9   <head>
10     <base href="<%=basePath%>">
11     
12     <title>主题回复</title>
13     
14     <meta http-equiv="pragma" content="no-cache">
15     <meta http-equiv="cache-control" content="no-cache">
16     <meta http-equiv="expires" content="0">    
17     <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
18     <meta http-equiv="description" content="This is my page">
19     <!--
20     <link rel="stylesheet" type="text/css" href="styles.css">
21     -->
22 <style>
23             #main{
24             width:768px;
25             height:500px;
26             border:1px dashed black;
27             background-color:#FFF3D9;
28         }
29         #top{
30             
31             text-align:center;
32             height:30px;;
33             border:1px dashed black;
34             margin:7px;
35         }    
36         #content{
37             height:400px;
38             border:1px dashed black;
39             margin:7px;
40         }
41         #c1{
42             width:25%;
43             height:400px;
44             border:1px dashed black;
45             background-color:#FFF3D9;
46             float:left;
47             text-align:center;
48         }    
49         #span{
50             vertical-align:middle;
51             margin-top:150px;
52         }
53         #c2{
54             width:72%;
55             height:400px;
56             border:1px dashed black;
57             background-color:white;
58             float:right;
59         }
60         #reply{
61             width:100%;
62             height:400px;
63         }
64         #footer{
65             height:35;
66             border:1px dashed black;
67             margin:7px;    
68         }
69         #btn{
70             float:right;
71             margin-right:10px;
72             margin-top:4px;
73         }
74 </style>
75   </head>
76   
77   <body>
78     <form name="form5" method="post" action="Zj04_sj1_reply">
79         <div id="main">
80             <div id="top"><span name="theme" values="浙江首条高速铁路通车">浙江首条高速铁路通车</span>   主题回复</div>
81             <div id="content">
82                 <div id="c1"><div id="span"  >回复内容</div></div>
83                 <div id="c2"><textarea name="reply" id="reply" name="reply"></textarea></div>
84             </div>
85             <div id="footer">
86                 <div id="btn">
87                     <input type="submit" value="提交"/> 
88                     <input type="reset" value="重置"/> 
89                 </div> 
90             </div>
91         </div>
92     </form>
93   </body>
94 </html>
临界的主页 临界 | 初学一级 | 园豆:142
提问于:2015-10-26 00:44
< >
分享
最佳答案
0

Restart server

收获园豆:20
FangJinuo | 小虾三级 |园豆:930 | 2015-11-22 20:57
其他回答(1)
0

doPost前面要加上@Override,然后重启试试

之奇一昂 | 园豆:1421 (小虾三级) | 2015-10-26 08:06
清除回答草稿
   您需要登录以后才能回答,未注册用户请先注册