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Java获取用户ip

2016-05-10 3592

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简介：

Java 如何获取客户端IP呢?

核心思想:通过HTTP的request来获取
下面是我总结的几种方法:

   Java代码  
    
  
/** 
     * 获取客户端ip地址(可以穿透代理) 
     *  
     * @param request 
     * @return 
     */  
    public static String getRemoteAddr(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();  
        }  
        return ip;  
    }  
    private static final String[] HEADERS_TO_TRY = {   
        "X-Forwarded-For",  
        "Proxy-Client-IP",  
        "WL-Proxy-Client-IP",  
        "HTTP_X_FORWARDED_FOR",  
        "HTTP_X_FORWARDED",  
        "HTTP_X_CLUSTER_CLIENT_IP",  
        "HTTP_CLIENT_IP",  
        "HTTP_FORWARDED_FOR",  
        "HTTP_FORWARDED",  
        "HTTP_VIA",  
        "REMOTE_ADDR",  
        "X-Real-IP"};  
  
    /*** 
     * 获取客户端ip地址(可以穿透代理) 
     * @param request 
     * @return 
     */  
    public static String getClientIpAddress(HttpServletRequest request) {  
        for (String header : HEADERS_TO_TRY) {  
            String ip = request.getHeader(header);  
            if (ip != null && ip.length() != 0 && !"unknown".equalsIgnoreCase(ip)) {  
                return ip;  
            }  
        }  
        return request.getRemoteAddr();  
    }  
    /*** 
     * 获取客户端ip地址(可以穿透代理) 
     * @param request 
     * @return 
     */  
    public static String getClientIpAddr(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_X_FORWARDED_FOR");    
        }    
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {    
            ip = request.getHeader("HTTP_X_FORWARDED");    
        }    
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {    
            ip = request.getHeader("HTTP_X_CLUSTER_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_FORWARDED_FOR");    
        }    
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {    
            ip = request.getHeader("HTTP_FORWARDED");    
        }    
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {    
            ip = request.getHeader("HTTP_VIA");    
        }    
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {    
            ip = request.getHeader("REMOTE_ADDR");    
        }    
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {    
            ip = request.getRemoteAddr();    
        }    
        return ip;    
    }  
    public static String getIpAddr(HttpServletRequest request) {  
        String ip = request.getHeader("X-Real-IP");  
        if (null != ip && !"".equals(ip.trim())  
                && !"unknown".equalsIgnoreCase(ip)) {  
            return ip;  
        }  
        ip = request.getHeader("X-Forwarded-For");  
        if (null != ip && !"".equals(ip.trim())  
                && !"unknown".equalsIgnoreCase(ip)) {  
            // get first ip from proxy ip  
            int index = ip.indexOf(',');  
            if (index != -1) {  
                return ip.substring(0, index);  
            } else {  
                return ip;  
            }  
        }  
        return request.getRemoteAddr();  
    }  

我使用的是spring MVC框架,测试的控制器代码如下:

   Java代码  
    
  
package com.web.controller;  
  
import java.util.HashMap;  
import java.util.Map;  
  
import javax.servlet.http.HttpServletRequest;  
  
import org.springframework.stereotype.Controller;  
import org.springframework.web.bind.annotation.RequestMapping;  
import org.springframework.web.bind.annotation.ResponseBody;  
  
import com.common.util.SystemHWUtil;  
import com.common.util.WebServletUtil;  
import com.string.widget.util.ValueWidget;  
import com.util.JSONPUtil;  
/*** 
 * 用于测试跨域 
 * @author huangweii 
 * 2015年5月29日 
 */  
@Controller  
@RequestMapping("/cors")  
public class CORSController {  
    @ResponseBody  
    @RequestMapping(value = "/simple",produces=SystemHWUtil.RESPONSE_CONTENTTYPE_JSON_UTF)  
    public String corsJsonSimple(HttpServletRequest request,String callback){  
        String content;  
        Map map=new HashMap();  
        map.put("username", "黄威");  
        map.put("age", "27");  
        map.put("address", "beijing");  
        content=JSONPUtil.getJsonP(map, callback);  
        System.out.println("getIpAddr:"+WebServletUtil.getIpAddr(request));  
        System.out.println("getRemoteAddr:"+WebServletUtil.getRemoteAddr(request));  
        System.out.println("getClientIpAddr:"+WebServletUtil.getClientIpAddr(request));  
        System.out.println("getClientIpAddress:"+WebServletUtil.getClientIpAddress(request));  
        return content;  
    }  
  
}  

测试结果:

参考:Java获取用户ip

http://blog.csdn.net/hw1287789687/article/details/46292069

Java获取用户ip

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