linux下配置nginx反向代理例子

時間 2019-12-07

標籤 linux 配置 nginx 反向代理例子欄目 Linux 简体版

原文原文鏈接

官方說明：html

例子：java

虛擬機ip：192.168.85.3，物理機VMware Network Adapter VMnet8 ip：192.168.85.1nginx

1，準備tomcat瀏覽器

準備一tomcat，端口，8080
tomcat

準備一Jsp，用於獲取客戶端真實IP和nginx IP ，test.jsp：服務器

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Test Page</title>
</head>
<body>
Test1 Page!!!<br/>
remote ip :  <%-- <%=request.getHeader("X-real-ip") %> --%> <br/>
nginx server ip : <%=request.getRemoteAddr()%>
</body>
</html>

將test.jsp 上傳到 tomcat的/ROOT目錄下。jsp

2，配置nginx工具

注意，反向代理以後獲取到客戶端IP地址爲nginx服務器地址，這裏須要nginx進行forward，設置真實的ip地址。往請求頭set一變量 X-real-ip ,值取客戶端ip，這樣就能夠在jsp中獲取該變量：測試

proxy_set_header X-real-ip $remote_addr; ui

匹配.jsp結尾的請求：

location ~ \.jsp$

3，測試

啓動tomcat，啓動nginx，瀏覽器訪問：http://192.168.85.3:70/test.jsp

在Java裏面通常有一個工具類來獲取 IP：

public class IpUtils {
    private IpUtils() {
    }

    public static String getIpAddr(HttpServletRequest request) {
        if (request == null) {
            return "unknown";
        }
        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("X-Forwarded-For");
        }
        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("X-Real-IP");
        }

        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getRemoteAddr();
        }
        return ip;
    }
}

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