Jsp之常用的内置对象

来源：互联网发布：rrb400软件代号编辑：程序博客网时间：2024/05/22 14:58

Request对象主要用于处理客户端请求（内置对象，无需请求）

请求：get post请求

常用方法：

下面：我们来写一个简单的传值小程序，一个小表单，在另一个Jsp里将表单的信息输出
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%><%@ page contentType="text/html; charset=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 'table.jsp' starting page</title>    <meta charset="utf-8"><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">-->  <script type="text/javascript" src="js/jquery-1.4.2.min.js"></script>  <script type="text/javascript">   $(function(){     $("#bt1").click(function(){          $("form").submit();     });   });</script>  </head>    <body>  <form action="go.jsp" method="post">  <table>  <tr>  <td>用户名：</td>  <td><input type="text" name="name"></td>  </tr>  <tr>  <td>密码：</td>  <td><input type="text" name="password"></td>  </tr>   <tr>  <td>确认密码：</td>  <td> <input type="text" name="again"></td>  </tr>   <tr>  <td> 性别：</td>  <td>  <input type="radio" name="sex" value="男" checked>男  <input type="radio" name="sex" value="女">女  </td>    </tr>  <tr>  <td> 电子邮箱地址：</td>  <td><input type="text" name="email"></td>  </tr>  <tr>  <td> 兴趣爱好：</td>  <td>  <input type="checkbox" name="hobby" value="体育" checked>体育  <input type="checkbox" name="hobby" value="读书">读书  <input type="checkbox" name="hobby" value="音乐">音乐  <input type="checkbox" name="hobby" value="旅游">旅游  </td>  </tr>  </table>  <input type="button" value="同意以下条款" id="bt1">   <input type="color">   <input type="date">  </form>       </body></html>
效果图：

显示程序：
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%><%@ page contentType="text/html; charset=utf-8" %><%request.setCharacterEncoding("utf-8");String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";String name=request.getParameter("name");String password=request.getParameter("password");String again=request.getParameter("again");String sex=request.getParameter("sex");String email=request.getParameter("email");String hobby[]=request.getParameterValues("hobby");%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html>  <head>    <base href="<%=basePath%>">        <title>My JSP 'go.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>    <p>用户名：<%=name%></p>    <p>密码：<%=password%></p>    <p>确认密码：<%=again%></p>    <p>性别：<%=sex%></p>    <p>邮箱：<%=email%></p>    <p>爱好：        <%for(int i=0;i<hobby.length;i++){ %>    <%=hobby[i]%>     <%} %>    </p>  </body></html>效果图：

需要注意的是：中文需要改:tomcat中的conf/server.xml中添加
useBodyEncodingForURI="true" URIEncoding="UTF-8"
页面传值：get 方式 通过连接提交
至此，简单的内置对象就结束啦，啦啦啦

0 0