跟表单无关通过手工赋值给属性 网页打开出现错误
login2.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>
<base href="<%=basePath%>">
<title>My JSP 'login.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<h1>用户登陆</h1>
<hr>
<form action="dologin2.jsp?mypass=1234" name="loginForm" method="post">
<table>
<tr>
<td>用户名:</td>
<td><input type="text" name="username" /></td>
</tr>
<tr>
<td>密码:</td>
<td><input type="password" name="password" /></td>
</tr>
<tr>
<td colspan="2"><input type="submit" value="登陆"></td>
</tr>
</table>
</form>
</body>
</html>
dologin2.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>
<base href="<%=basePath%>">
<title>My JSP 'dologin2.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<jsp:useBean id="myUsers" class="com.po.Users" scope="page"/>
<h1>setProperty动作元素的使用方法</h1>
<hr>
<!-- 根据表单自动匹配所有的属性 -->
<%--
<jsp:setProperty name="myUsers" property="*"/>
--%>
<!-- 根据表单匹配部分的属性 -->
<%--
<jsp:setProperty name="myUsers" property="username"/>
--%>
<!-- 跟表单无关通过手工赋值给属性 -->
<%--
<jsp:setProperty name="myUsers" property="username" value=“lisi” />
<jsp:setProperty name="myUsers" property="password" value=“1234ss”/>
--%>
<!-- 通过URL传参数给属性赋值 -->
<jsp:setProperty name="myUsers" property="username" param="mypass" />
用户名：<%=myUsers.getUsername() %><br>
密码：<%=myUsers.getPassword() %><br>
</body>
</html>
个回答
-
- qq_连环_04358155
- 2016-11-18 14:31:22
<form action="dologin2.jsp?mypass=1234" name="loginForm" method="post">
手工赋值应该用get方法吧，你这里用？mypass=1234明显应该用get