前后端分离Java获取发送请求的电脑的IP地址

后端

获取发送请求的电脑的IP地址

package com.receiptback.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.HashMap;
import java.util.Map;

@Controller
@CrossOrigin
@RequestMapping(value = "GetIP")
public class IPController {

    @ResponseBody
    @RequestMapping(value = "ip")
    public Map<String,String> getIP(HttpServletRequest request, HttpServletResponse response) {

        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();
        }
        
        Map map = new HashMap();
        map.put("IP",ip);
        return map;
    }
}

前端

调用接口

React.$axios.post('/GetIP/ip').then((res)=>{
    
    
           console.log(res)
            this.setState({
    
    
                de:res['IP']
            })
        }).catch((err)=>{
    
    
            console.log(err)
        });

注意[○･｀Д´･ ○]

如果axios的url是localhost的，打印出的ip是127.0.0.1或者0.0.0.0.0.0.0.1，把URL改成ip地址类型的就可以显示发送请求的电脑的真实ip地址。(╹▽╹)