com.iflytek.edu.cloud.frame.utils.ServiceUtil.java Source code

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Here is the source code for com.iflytek.edu.cloud.frame.utils.ServiceUtil.java

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/**
 * Copyright 2013-2014 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.iflytek.edu.cloud.frame.utils;

import javax.servlet.http.HttpServletRequest;

import org.springframework.util.StringUtils;

/**
 * 
 * @author libinsong1204@gmail.com
 *
 */
public abstract class ServiceUtil {
    //???IP????IP???
    private static final String X_REAL_IP = "X-Real-IP";

    private static final String X_FORWARDED_FOR = "X-Forwarded-For";

    public static String getRemoteAddr(HttpServletRequest request) {
        String remoteIp = request.getHeader(X_REAL_IP); //nginx????  
        if (StringUtils.hasText(remoteIp)) {
            return remoteIp;
        } else {
            remoteIp = request.getHeader(X_FORWARDED_FOR);//apache???  
            if (StringUtils.hasText(remoteIp)) {
                String[] ips = remoteIp.split(",");
                for (String ip : ips) {
                    if (!"null".equalsIgnoreCase(ip)) {
                        return ip;
                    }
                }
            }
            return request.getRemoteAddr();
        }
    }

}