修改功能
分析
findUserServlet类
- 获取用户id
- 根据id查询用户信息User
- 将user对象存到request
- 转发到update.jsp页面
UpdateIserServlet
- 设置编码
- 获取表单数据 map
- 封装User对象
- 调用Service完成修改
- 跳转到查询所有Servlet
代码
jsp页面
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<meta charset="utf-8">
<title>修改用户</title>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width,initial-scale=1">
<!-- 上述3个meta标签*必须*放在最前面 任何其他内容都*必须*跟随其后-->
<title>首页</title>
<!-- Bootstrap -->
<link href="css/bootstrap.min.css" rel="stylesheet">
<!-- jQuery(Bootstrap的所有javaScrpt插件都依赖) -->
<script src="js/bootstrap.min.js"></script>
<!-- 加载Bootstrap 的所有 javaScript插件 你也可以根据需要只加载单个插件 -->
<script src="./js/bootstrap.js"></script>
<script src="text/javascript"></script>
</head>
<body>
<form action="" method="post">
<div class="form-group">
<label for="name">姓名：</label>
<input type="text" class="form-control" id="name" name="name" value="${user.name}" readonly="readonly" placeholder="请输入姓名" />
</div>
<div class="form-group">
<label>性别：</label>
<c:if test="${user.gender == '男'}">
<input type="radio" name="gender" value="男" checked/>男
<input type="radio" name="gender" value="女" />女
</c:if>
<c:if test="${user.gender == '女'}">
<input type="radio" name="gender" value="男" />男
<input type="radio" name="gender" value="女" checked/>女
</c:if>
</div>
<div class="form-group">
<label for="age">年龄：</label>
<input type="text" class="form-control" id="age" name="age" value="${user.age}" placeholder="请输入年龄" />
</div>
<div class="form-group">
<label for="address">籍贯：</label>
<select name="address" class="form-control" id="address">
<c:if test="${user.address == '陕西'}">
<option value="陕西" selected>陕西</option>
<option value="北京">北京</option>
<option value="上海">上海</option>
</c:if>
<c:if test="${user.address == '北京'}">
<option value="陕西">陕西</option>
<option value="北京" selected>北京</option>
<option value="上海">上海</option>
</c:if>
<c:if test="${user.address == '上海'}">
<option value="陕西" >陕西</option>
<option value="北京">北京</option>
<option value="上海" selected>上海</option>
</c:if>
</select>
</div>
<div class="form-group">
<label for="qq">QQ：</label>
<input type="text" class="form-control" id="qq" name="qq" value="${user.qq}" placeholder="请输入QQ号码"/>
</div>
<div class="form-group">
<label for="email">Email：</label>
<input type="text" class="form-control" id="email" name="email" value="${user.email}" placeholder="请输入邮箱地址"/>
</div>
<div class="form-group" style="text-align: center">
<input class="btn btn-primary" type="submit" value="提交" />
<input class="btn btn-default" type="reset" value="重置" />
<input class="btn btn-default" type="button" value="返回"/>
</div>
</form>
</div>
</body>
</html>
UserDao接口
User findById(int parseInt);
UserDaoImpl类
public User findById(int parseInt) {
//1、定义sql
String sql = "select * from user where id = ?";
User user = template.queryForObject(sql, new BeanPropertyRowMapper<User>(User.class),parseInt);
return user;
}
UserService接口
User findUserById(String id);
UserServiceImpl类
public User findUserById(String id) {
return dao.findById(Integer.parseInt(id));
}
FindUserServlet类
package com.bai.web.servlet;
import com.bai.domain.User;
import com.bai.service.UserService;
import com.bai.service.img.UserServiceImpl;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
public class FindUserServlet extends HttpServlet {
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//1、获取id
String id = request.getParameter("id");
//2、调用Service查询
UserService service = new UserServiceImpl();
User user = service.findUserById(id);
//3、将user存入request
request.setAttribute("user",user);
//4、转发到update.jsp
request.getRequestDispatcher("/update.jsp").forward(request,response);
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
doGet(req, resp);
}
}
标签：功能,request,修改,user,import,servlet,id,User
From： https://www.cnblogs.com/aimz01/p/16598101.html