ssm框架---点击修改的时候：路径/项目/stu/stu/updateSave.do的404页面

最新推荐文章于 2022-11-02 23:35:21 发布

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最新推荐文章于 2022-11-02 23:35:21 发布

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分类专栏：错误总结

本文链接：https://blog.youkuaiyun.com/sinat_33949861/article/details/54091548

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本文档介绍了在使用SSM框架时，遇到修改操作导致的404页面问题。提供了完整的SSM工程及SQL表下载链接，并详细说明了在StuController.java中解决此类错误的方法，主要涉及更新页面的跳转逻辑修复。

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StuController.java

package com.demo.controller;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.servlet.ModelAndView;

import com.demo.pojo.Student;
import com.demo.service.StuService;

@Controller
@RequestMapping("/stu")
public class StuController {

	@Autowired
	private StuService stuService;

	@RequestMapping("/stuSave")
	public String stuSave(Student stu) {

		boolean b = stuService.addStu(stu);
		if (b) {
			return "redirect:/stu/findAll.do";
		} else {
			return "index";
		}
	}

	@RequestMapping("/updateSave")
	public String updateSave(Student stu) {
        
		boolean b = stuService.updateStu(stu);
		System.out.println(b);
		if (b) {
			return "redirect:/stu/findAll.do";
		} else {
			return "index";
		}
	}

	@RequestMapping("/findById")
	public ModelAndView findById(@RequestParam("id") int id) {
		ModelAndView ma = new ModelAndView();
		Student s = stuService.findById(id);
		ma.addObject("stu", s);
		ma.setViewName("updateStu");
		return ma;
	}

	@RequestMapping("/delStu")
	public String delStu(@RequestParam("id") int id) {

		boolean b = stuService.deleteStu(id);
		if (b) {
			return "redirect:/stu/findAll.do";
		} else {
			return "index";
		}
	}

	@RequestMapping("/findAll")
	public ModelAndView findAll() {
		ModelAndView mo = new ModelAndView();
		List<Student> list = stuService.findAll();
		mo.addObject("list", list);
		mo.setViewName("list");
		return mo;
	}
	
}

update.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>addStu.html</title>
	
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="this is my page">
    <meta http-equiv="content-type" content="text/html; charset=UTF-8">
    
    <!--<link rel="stylesheet" type="text/css" href="./styles.css">-->

  </head>
  
  <body>
  	<form action="stu/updateSave.do" method="post">
     <table align="center" border="1" cellpadding="0" cellspacing="0">
       <%--  <tr>
           <th>id</th><th><input type="text" readonly="readonly" name="id" value="${stu.id }"/></th>
        </tr> --%>
   		<tr>
   			<th>name</th><th><input type="text" name="tname" value="${stu.tname }" />
   		</tr>
   		<tr>
   			<th>tpwd</th><th><input type="text" name="tpwd" value="${stu.tpwd }"/>
   		</tr>
   		<tr>
   			<th>age</th><th><input type="text" name="age" value="${stu.age }"/>
   		</tr>
   		<tr>
   			<th>sex</th>
   			<th><input type="radio" name="sex" value="1" ${stu.sex==1?"checked='checked'":"" } />男
   			<input type="radio" name="sex" value="0" ${stu.sex==0?"checked='checked'":"" }/>女</th>
   		</tr>
   		<tr>
   			<td colspan="2" align="center">
   				<input type="submit" value="提交">
   			</td>
   		</tr>
    </table>
    </form>
  </body>
</html>

错误页面：

解决错误的方法：

在修改页面将添加到修改页面

        <tr>
           <th>id</th><th><input type="text" readonly="readonly" name="id" value="${stu.id }"/></th>
        </tr>