蜗牛—JSP学习之JavaBean初识

初识：

<%@ 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 'index.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="login" class="com.***.***.Login"></jsp:useBean>   <!-- 引用Java类 -->
		<jsp:setProperty property="userName" name="login" value="10011"/>	<!-- 设置JavaBean的属性 -->
		<jsp:setProperty property="password" name="login" value="123456789"/> <!-- 设置JavaBean的属性 -->
		<hr/>
		<hr/>
		username<jsp:getProperty property="userName" name="login"/>    <!-- 取得JavaBean的属性值 -->
		密码:<jsp:getProperty property="password" name="login"/>		<!--  -->
	</body>
</html>


通过HTTP表单中的參数设置JavaBean的属性值 

<%@ 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 'index.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>
		
		<form action="" method="post">
			输入username:<input type="text" name="userName"><br/>
			输入密码:<input type="text" name="password">
			<input type="submit" value="确定">
			<input type="reset" value="清除">
		</form>
		
		
		<jsp:useBean id="login" class="com.***.***.Login"></jsp:useBean>   <!-- 引用Java类 -->
		<jsp:setProperty property="*" name="login" />	<!-- 设置JavaBean的属性 -->
		
		<hr/>
		<hr/>
		username<jsp:getProperty property="userName" name="login"/>    <!-- 取得JavaBean的属性值 -->
		密码:<jsp:getProperty property="password" name="login"/>		<!--  -->
	</body>
</html>

有可能在填入中文的时候输出会乱码

能够在.java文件里编写代码

public String getPassword() {
		try {
			byte b[] = password.getBytes("ISO-8859-1");
			password = new String(b, "UTF-8");
			return password;
		} catch (Exception e) {
			// TODO: handle exception
			return password;
		}
	}



posted @ 2014-06-13 09:41  mengfanrong  阅读(153)  评论(0)  编辑  收藏  举报