一、在Web请求中获取请求用户的IP地址
publicstaticString getUserRealIP(HttpServletRequest request)throws UnknownHostException {
String ip = "";
// 有的user可能使用代理，为处理用户使用代理的情况，使用x-forwarded-forif(request.getHeader("x-forwarded-for") ==null) {
ip = request.getRemoteAddr();
} else {
ip = request.getHeader("x-forwarded-for");
}
if("127.0.0.1".equals(ip)) {
// 获取本机真正的ip地址 ip = InetAddress.getLocalHost().getHostAddress();
}
return ip;
}
二、获取本机IP地址和主机名
importjava.util.*;
importjava.net.*;publicclass getMyIP
{
publicstaticvoid main(String[] args) {
String ip =null;
String host =null;
try{
InetAddress ia = InetAddress.getLocalHost();
host = ia.getHostName();//获取计算机名字 ip = ia.getHostAddress();//获取IP } catch(UnknownHostException e) {
e.printStackTrace();
}
System.out.println(host);
System.out.println(IP);
}
}
三、网上搜索的方法
import javax.servlet.http.HttpServletRequest;/** * 自定义访问对象工具类
*
* 获取对象的IP地址等信息
* @author X-rapido
*
*/publicclass CusAccessObjectUtil {
/** * 获取用户真实IP地址，不使用request.getRemoteAddr();的原因是有可能用户使用了代理软件方式避免真实IP地址,
*
* 可是，如果通过了多级反向代理的话，X-Forwarded-For的值并不止一个，而是一串IP值，究竟哪个才是真正的用户端的真实IP呢？
* 答案是取X-Forwarded-For中第一个非unknown的有效IP字符串。
*
* 如：X-Forwarded-For：192.168.1.110, 192.168.1.120, 192.168.1.130,
* 192.168.1.100
*
* 用户真实IP为： 192.168.1.110
*
* @param request
* @return*/publicstatic String getIpAddress(HttpServletRequest request) {
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.getHeader("HTTP_CLIENT_IP");
}
if(ip ==null|| ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("HTTP_X_FORWARDED_FOR");
}
if(ip ==null|| ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getRemoteAddr();
if("127.0.0.1".equals(ip)||"0:0:0:0:0:0:0:1".equals(ip)){
//根据网卡取本机配置的IPInetAddress inet=null;
try {
inet = InetAddress.getLocalHost();
} catch (UnknownHostException e) {
e.printStackTrace();
}
ip= inet.getHostAddress();
}
}
return ip;
}
}
四、扩展知识
Java获取客户端请求电脑IP，操作系统等等各种信息
HttpServletRequest request = ServletActionContext.getRequest();
System.out.println("浏览器基本信息："+request.getHeader("user-agent"));
System.out.println("客户端系统名称："+System.getProperty("os.name"));
System.out.println("客户端系统版本："+System.getProperty("os.version"));
System.out.println("客户端操作系统位数："+System.getProperty("os.arch"));
System.out.println("HTTP协议版本："+request.getProtocol());
System.out.println("请求编码格式："+request.getCharacterEncoding());
System.out.println("Accept："+request.getHeader("Accept"));
System.out.println("Accept-语言："+request.getHeader("Accept-Language"));
System.out.println("Accept-编码："+request.getHeader("Accept-Encoding"));
System.out.println("Connection："+request.getHeader("Connection"));
System.out.println("Cookie："+request.getHeader("Cookie"));
System.out.println("客户端发出请求时的完整URL"+request.getRequestURL());
System.out.println("请求行中的资源名部分"+request.getRequestURI());
System.out.println("请求行中的参数部分"+request.getRemoteAddr());
System.out.println("客户机所使用的网络端口号"+request.getRemotePort());
System.out.println("WEB服务器的IP地址"+request.getLocalAddr());
System.out.println("WEB服务器的主机名"+request.getLocalName());
System.out.println("客户机请求方式"+request.getMethod());
System.out.println("请求的文件的路径"+request.getServerName());
System.out.println("请求体的数据流"+request.getReader());
BufferedReader br=request.getReader();
String res = "";
while((res = br.readLine()) !=null) {
System.out.println("request body:" + res);
}
System.out.println("请求所使用的协议名称"+request.getProtocol());
System.out.println("请求中所有参数的名字"+request.getParameterNames());
Enumeration enumNames= request.getParameterNames();
while (enumNames.hasMoreElements()) {
String key = (String) enumNames.nextElement();
System.out.println("参数名称："+key);
}
五、在本机上获取计算机信息
publicvoid getIP(){
try {
InetAddress address = InetAddress.getLocalHost();
String ip = address.getHostAddress().toString();//获取本机IPString hostName = address.getHostName().toString();//获取本机计算机名称System.out.println("ip is:"+ip);
System.out.println("host name is:"+hostName);
} catch (UnknownHostException e) {
e.printStackTrace();
}
}
