实现一个这样简单的页面。
实现流程:
1.创建User类,共有的类,私有的属性,有无参构造方法,setter方法。
2.登录的页面,包含一个form表单。
3.登录成功的页面,能够获得form里面的属性
package demo;
public class User {
private String username;
private String password;
public User() {
// super();
// TODO Auto-generated constructor stub
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>首页</title>
</head>
<body>
<h1>用户登录</h1>
<form action="index.jsp" method="post">
<td>用户名:</td>
<td><input type="text" name="username" value="" placeholder="username"></td>
<td>密码:</td>
<td><input type="password" name="password" value="" placeholder="password"></td>
<td><button type="reset">重置</button></td>
<td><button type="submit">登录</button></td>
</form>
</body>
</html>
*他会根据form里面的属性名与User的属性匹配。就是通过setter方法。
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>首页</title>
</head>
<body>
<h2>登录成功</h2>
<jsp:useBean id="user" class="demo.User" scope="page"></jsp:useBean>
<jsp:setProperty property="*" name="user"/>
用户名: <%=user.getUsername() %>
密码:<%=user.getPassword() %>
</body>
</html>
当然也可以自定义赋值。
<jsp:setProperty property="username" value="xxx" name="user"/>