JSP的request对象实例详解（jsp的软件）全程干货

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<%@ page language=”java” import=”java.util.*” 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=”https://www.jb51.net/article/<%=basePath%>” rel=”external nofollow” >

<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=”https://www.jb51.net/article/styles.css” rel=”external nofollow” >
–>
</head>

<body>
<h1>request内置对象</h1>
<%
request.setCharacterEncoding(“utf-8”); //解决中文乱码问题，无法解决URL传递中文出现的乱码问题。
request.setAttribute(“password”, “123456”);

%>
用户名：<%=request.getParameter(“username”) %> 
爱好：<%
if(request.getParameterValues(“favorite”)!=null)
{
String[] favorites=request.getParameterValues(“favorite”);
for(int i=0;i<favorites.length;i++)
{
out.println(favorites[i]+” “);
}
}
%> 
密码：<%=request.getAttribute(“password”) %> 
请求体的MIME类型:<%=request.getContentType() %> 
协议类型及版本号: <%=request.getProtocol() %> 
服务器主机名 :<%=request.getServerName() %> 
服务器端口号：<%=request.getServerPort() %> 
请求文件的长度：<%=request.getContentLength() %> 
请求客户端的IP地址：<%=request.getRemoteAddr() %> 
请求的真实路径：<%=request.getRealPath(“request.jsp”) %> 
请求的上下文路径：<%=request.getContextPath() %> 
</body>
</html>