JSP内置对象:Request和Response的简单介绍及使用

< %@ page contentType="text/html;charset=gb2312"%>
< %request.setCharacterEncoding("gb2312");%>
< html>
< head>
< title>request对象_例1< /title>
< /head>
< body bgcolor="#FFFFF0">
< form action="" method="post">
< input type="text" name="qwe">
< input type="submit" value="提交">
< /form>
请求方式< %=request.getMethod()%>< br>
请求的资源< %=request.getRequestURI()%>< br>
请求用的协议< %=request.getProtocol()%>< br>
请求的文件名< %=request.getServletPath()%>< br>
请求的服务器的IP< %=request.getServerName()%>< br>
请求服务器的端口< %=request.getServerPort()%>< br>
客户端IP地址< %=request.getRemoteAddr()%>< br>
客户端主机名< %=request.getRemoteHost()%>< br>
表单提交来的值< %=request.getParameter("qwe")%>< br>
< /body>
< /html>  
< %@ page contentType="text/html;charset=gb2312"%>
< %request.setCharacterEncoding("gb2312");%>
< %@ page import="java.util.Enumeration"%>
< html>
< head>
< title>request对象_例2< /title>
< /head>
< body bgcolor="#FFFFF0">
< form action="" method="post">
用户名< input type="text" name="username">   
密 码< input type="text" name="userpass">   
< input type="submit" value="进入" >
< /form>
< % 
String str=""; 
if(request.getParameter("username")!=null && request.getParameter("userpass")!=null){ 
Enumeration enumt = request.getParameterNames(); 
while(enumt.hasMoreElements()){ 
str=enumt.nextElement().toString(); 
out.println(str ":" request.getParameter(str) "< br>"); 
} 
} 
%>
< /body>
< /html>  
< %@ page contentType="text/html;charset=gb2312"%>
< %request.setCharacterEncoding("gb2312");%>
< html>
< head>
< title>request对象_例3< /title>
< /head>
< body bgcolor="#FFFFF0">
< form action="" method="post">
擅长< input type="checkbox" name="cb" value="ON1">VC   
< input type="checkbox" name="cb" value="ON2">JAVA  
< input type="checkbox" name="cb" value="ON3">DELPHI  
< input type="checkbox" name="cb" value="ON4">VB  
< br>
< input type="submit" value="进入" name="qwe">
< /form>
< % 
if(request.getParameter("qwe")!=null ){ 
for(int i=0;i< request.getParameterValues("cb").length;i ){ 
out.println("cb" i ":" request.getParameterValues("cb")[i] "< br>"); 
} 
out.println(request.getParameter("qwe")); 
} 
%>
< /body>
< /html>