package com.zheng.common.util;
import javax.servlet.http.HttpServletRequest;
import java.util.Enumeration;
/**
* request工具类
* Created by ZhangShuzheng on 2016/12/12.
*/
public class RequestUtil {
/**
* 移除request指定参数
* @param request
* @param paramName
* @return
*/
public String removeParam(HttpServletRequest request, String paramName) {
String queryString = "";
Enumeration keys = request.getParameterNames();
while (keys.hasMoreElements()) {
String key = (String) keys.nextElement();
if (key.equals(paramName)) {
continue;
}
if (queryString.equals("")) {
queryString = key + "=" + request.getParameter(key);
} else {
queryString += "&" + key + "=" + request.getParameter(key);
}
}
return queryString;
}
/**
* 获取请求basePath
* @param request
* @return
*/
public static String getBasePath(HttpServletRequest request) {
StringBuffer basePath = new StringBuffer();
String scheme = request.getScheme();
String domain = request.getServerName();
int port = request.getServerPort();
basePath.append(scheme);
basePath.append("://");
basePath.append(domain);
if("http".equalsIgnoreCase(scheme) && 80 != port) {
basePath.append(":").append(String.valueOf(port));
} else if("https".equalsIgnoreCase(scheme) && port != 443) {
basePath.append(":").append(String.valueOf(port));
}
return basePath.toString();
}
/**
* 获取ip工具类,除了getRemoteAddr,其他ip均可伪造
* @param request
* @return
*/
public static String getIpAddr(HttpServletRequest request) {
String ip = request.getHeader("Cdn-Src-Ip"); // 网宿cdn的真实ip
if (ip == null || ip.length() == 0 || " unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("HTTP_CLIENT_IP"); // 蓝讯cdn的真实ip
}
if (ip == null || ip.length() == 0 || " unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("X-Forwarded-For"); // 获取代理ip
}
if (ip == null || ip.length() == 0 || " unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("Proxy-Client-IP"); // 获取代理ip
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getHeader("WL-Proxy-Client-IP"); // 获取代理ip
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.getRemoteAddr(); // 获取真实ip
}
return ip;
}
}