jsp获取客户端真实ip地址
2011-11-24 16:59
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index.jsp
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>用户登录</title>
</head>
<body>
<form action='deal.jsp' method='post'>
<font color="red">你的ip地址：</font>
<%
String ip = request.getHeader("x-forwarded-for");
if(ip==null||ip.length()==0||"unknown".equalsIgnoreCase(ip))
{
ip = request.getHeader("Proxy-Client-IP");
}
if(ip==null||ip.length()==0||"unknown".equalsIgnoreCase(ip))
{
ip = request.getHeader("WL-Proxy-Client-IP");
}
if(ip==null||ip.length()==0||"unknown".equalsIgnoreCase(ip))
{
ip = request.getRemoteAddr();
}
out.println(ip);
System.out.println(ip);
Cookie c = new Cookie("ip",ip);
c.setMaxAge(24*3600);
response.addCookie(c);
%>
<br>
<font color="red">*</font>代表必填项
<br>
<font color="red">用户名、密码都是123</font>
<br>
<font color="red">
<%
if(request.getAttribute("tip")!=null)
out.print(request.getAttribute("tip"));
/* request.setCharacterEncoding("utf-8");
if(request.getParameter("tip")!=null){
String tip = new String(request.getParameter("tip").getBytes("ISO8859_1"),"utf-8");
out.print(tip);
} */
%>
</font>
<br>
<table>
<tr><td>用户名：</td><td><input name="name" length="20"/><font color="red">*</font></td></tr>
<tr><td>密码:</td><td><input type='password' name="pass" length="20"/><font color="red">*</font></td></tr>
<tr><td>你喜欢的颜色：</td><td><font color="red">*</font></td></tr>
<tr>
<td><font color="red">红:</font><input type="checkbox" name="color" value="红"/></td>
<td> <font color="green">绿:</font><input type="checkbox" name="color" value="绿"/></td>
<td> <font color="blue">蓝:</font><input type="checkbox" name="color" value="蓝"/></td>
</tr>
</table>
<br>
<button>提交</button>
</form>
</body>
</html>
deal.jsp
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="UTF-8" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>用户登录</title>
</head>
<body>
<%
String name = new String(request.getParameter("name").getBytes("ISO8859_1"),"utf-8");
String pass = new String(request.getParameter("pass").getBytes("ISO8859_1"),"utf-8");
String []colors = request.getParameterValues("color");
if("123".equals(name)&&"123".equals(pass)){
out.println("用户名:"+name);
out.println("密码:"+pass);
out.println("你喜欢的颜色:");
if(colors!=null)
{
for(String temp: colors){
String color = new String(temp.getBytes("ISO8859_1"),"utf-8");
if(color.equals("红")){
out.println( "<font color='red'>"+color+"</font>");
}
if(color.equals("绿")){
out.println("<font color='green'>"+color+"</font>");
}
else if(color.equals("蓝")){
out.println("<font color='blue'>"+color+"</font>");
}
}
}
else
{
request.setAttribute("tip", "请选择喜欢的颜色！");
request.getRequestDispatcher("index.jsp").forward(request, response);
}
}
else
{
request.setAttribute("tip", "用户名或者密码错误，请重新输入！");
request.getRequestDispatcher("index.jsp").forward(request, response);
}%>
</body>
</html>
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>用户登录</title>
</head>
<body>
<form action='deal.jsp' method='post'>
<font color="red">你的ip地址：</font>
<%
String ip = request.getHeader("x-forwarded-for");
if(ip==null||ip.length()==0||"unknown".equalsIgnoreCase(ip))
{
ip = request.getHeader("Proxy-Client-IP");
}
if(ip==null||ip.length()==0||"unknown".equalsIgnoreCase(ip))
{
ip = request.getHeader("WL-Proxy-Client-IP");
}
if(ip==null||ip.length()==0||"unknown".equalsIgnoreCase(ip))
{
ip = request.getRemoteAddr();
}
out.println(ip);
System.out.println(ip);
Cookie c = new Cookie("ip",ip);
c.setMaxAge(24*3600);
response.addCookie(c);
%>
<br>
<font color="red">*</font>代表必填项
<br>
<font color="red">用户名、密码都是123</font>
<br>
<font color="red">
<%
if(request.getAttribute("tip")!=null)
out.print(request.getAttribute("tip"));
/* request.setCharacterEncoding("utf-8");
if(request.getParameter("tip")!=null){
String tip = new String(request.getParameter("tip").getBytes("ISO8859_1"),"utf-8");
out.print(tip);
} */
%>
</font>
<br>
<table>
<tr><td>用户名：</td><td><input name="name" length="20"/><font color="red">*</font></td></tr>
<tr><td>密码:</td><td><input type='password' name="pass" length="20"/><font color="red">*</font></td></tr>
<tr><td>你喜欢的颜色：</td><td><font color="red">*</font></td></tr>
<tr>
<td><font color="red">红:</font><input type="checkbox" name="color" value="红"/></td>
<td> <font color="green">绿:</font><input type="checkbox" name="color" value="绿"/></td>
<td> <font color="blue">蓝:</font><input type="checkbox" name="color" value="蓝"/></td>
</tr>
</table>
<br>
<button>提交</button>
</form>
</body>
</html>
deal.jsp
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="UTF-8" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>用户登录</title>
</head>
<body>
<%
String name = new String(request.getParameter("name").getBytes("ISO8859_1"),"utf-8");
String pass = new String(request.getParameter("pass").getBytes("ISO8859_1"),"utf-8");
String []colors = request.getParameterValues("color");
if("123".equals(name)&&"123".equals(pass)){
out.println("用户名:"+name);
out.println("密码:"+pass);
out.println("你喜欢的颜色:");
if(colors!=null)
{
for(String temp: colors){
String color = new String(temp.getBytes("ISO8859_1"),"utf-8");
if(color.equals("红")){
out.println( "<font color='red'>"+color+"</font>");
}
if(color.equals("绿")){
out.println("<font color='green'>"+color+"</font>");
}
else if(color.equals("蓝")){
out.println("<font color='blue'>"+color+"</font>");
}
}
}
else
{
request.setAttribute("tip", "请选择喜欢的颜色！");
request.getRequestDispatcher("index.jsp").forward(request, response);
}
}
else
{
request.setAttribute("tip", "用户名或者密码错误，请重新输入！");
request.getRequestDispatcher("index.jsp").forward(request, response);
}%>
</body>
</html>
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