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;
}
}