java中获取当前服务器ip

在Java中获取当前服务器IP地址有多种方式，以下是两种常用的方式：

1. 使用Java自带的InetAddress类：

import java.net.InetAddress;
import java.net.UnknownHostException;

public class GetServerIP {
    public static void main(String[] args) {
        try {
            InetAddress inetAddress = InetAddress.getLocalHost();
            System.out.println("IP Address: " + inetAddress.getHostAddress());
        } catch (UnknownHostException e) {
            e.printStackTrace();
        }
    }
}

2. 使用Servlet API获取：

import javax.servlet.http.HttpServletRequest;

public class GetServerIP {
    public static String getServerIP(HttpServletRequest request) {
        String ipAddress = request.getHeader("x-forwarded-for");
        if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
            ipAddress = request.getHeader("Proxy-Client-IP");
        }
        if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
            ipAddress = request.getHeader("WL-Proxy-Client-IP");
        }
        if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
            ipAddress = request.getRemoteAddr();
        }
        return ipAddress;
    }
}

其中，第二种方式适用于Web应用程序，可以在Servlet中通过HttpServletRequest对象获取当前服务器IP地址。