Nginx SSL+tomcat集群,request.getScheme() 取到https正确的协议详解

   公司之前用的是http,但是出于苹果app审核和服务器安全性问题,要改为https,我们公司用的是沃通的ssl,按照沃通的官方文档提供的步骤完成服务器的配置。 架构上使用了 Nginx +tomcat 集群, 且nginx下配置了SSL,tomcat 没有配置SSL,项目使用https协议。

Nginx SSL+tomcat集群,request.getScheme() 取到https正确的协议详解

配置成功后明明是https url请求,发现 log里面,tomcat获取scheme的时候,一直是http,而不是想像中的https

0415 16:01:10 INFO  (PaymentInterceptor.java:44) preHandle() - requestStringForLog:    {
        "request.getRequestURL():": "http://m.xxx.com/payment/paymentChannel?id=212&s=a84485e0985afe97fffd7fd7741c93851d83a4f6",
        "request.getMethod:": "GET",
        "_parameterMap":         {
            "id": ["212"],
            "s": ["a84485e0985afe97fffd7fd7741c93851d83a4f6"]
        }
    }


request.getRequestURL() 输出出来的 一直是 

http://m.xxx.com/payment/paymentChannel?id=212&s=a84485e0985afe97fffd7fd7741c93851d83a4f6 

但是浏览器中的URL却是 

https://m.xxx.com/payment/paymentChannel?id=212&s=a84485e0985afe97fffd7fd7741c93851d83a4f6

下面我们进一步研究发现,java API上写得很清楚:

getRequestURL():

Reconstructs the URL the client used to make the request. 

The returned URL contains a protocol, server name, port number, and server path, 
but it does not include query string parameters.

也就是说, getRequestURL() 输出的是不带query string的路经(含协议,端口,server path等信息).

Nginx SSL+tomcat集群,request.getScheme() 取到https正确的协议详解

并且还发现

  1.  
    request.getScheme() //总是 http,而不是实际的http或https
  2.  
    request.isSecure() //总是false(因为总是http)
  3.  
    request.getRemoteAddr() //总是 nginx 请求的 IP,而不是用户的IP
  4.  
    request.getRequestURL() //总是 nginx 请求的URL 而不是用户实际请求的 URL
  5.  
    response.sendRedirect( 相对url ) //总是重定向到 http 上 (因为认为当前是 http 请求)


那么解决方案有没有呢,答案是肯定的,其实解决方法非常的简单,只需要分别配置一下 Nginx 和 Tomcat 就好了,而不用从程序代码上修改。

1.配置nginx的转发项,配置文件为proxy.conf,内容如下:

proxy_connect_timeout 300s;
proxy_send_timeout 900;
proxy_read_timeout 900;
proxy_buffer_size 32k;
proxy_buffers 4 64k;
proxy_busy_buffers_size 128k;
proxy_redirect off;
proxy_hide_header Vary;
proxy_set_header Accept-Encoding '';
proxy_set_header Referer $http_referer;
proxy_set_header Cookie $http_cookie;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

proxy_set_header X-Forwarded-Proto  $scheme;


其中的proxy_set_header X-Forwarded-Proto $scheme;起到了关键性的作用。

2.配置tomcat,配置文件为server.xml,内容如下:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE server-xml [
<!ENTITY vhost-localhost SYSTEM "file:///usr/local/tomcat-interface/conf/vhost/localhost.xml">
]>
<Server port="8006" shutdown="SHUTDOWN">
  <Listener className="org.apache.catalina.core.JreMemoryLeakPreventionListener"/>
  <Listener className="org.apache.catalina.mbeans.GlobalResourcesLifecycleListener"/>
  <Listener className="org.apache.catalina.core.ThreadLocalLeakPreventionListener"/>
  <Listener className="org.apache.catalina.core.AprLifecycleListener"/>

  <GlobalNamingResources>
    <Resource name="UserDatabase" auth="Container"
              type="org.apache.catalina.UserDatabase"
              description="User database that can be updated and saved"
              factory="org.apache.catalina.users.MemoryUserDatabaseFactory"
              pathname="conf/tomcat-users.xml" />
  </GlobalNamingResources>

  <Service name="Catalina">
    <Connector port="8080"
              protocol="org.apache.coyote.http11.Http11AprProtocol"
              connectionTimeout="20000"
              redirectPort="8443"
              maxThreads="1000"
              minSpareThreads="20"
              acceptCount="1000"
              debug="0"
              disableUploadTimeout="true"
	      useBodyEncodingForURI="true"
              enableLookups="false"
              URIEncoding="UTF-8" />
    <Engine name="Catalina" defaultHost="localhost">
	  <Valve className="org.apache.catalina.valves.RemoteIpValve"
		remoteIpHeader="X-Forwarded-For"
		protocolHeader="X-Forwarded-Proto"
		protocolHeaderHttpsValue="https"/>
      <Realm className="org.apache.catalina.realm.LockOutRealm">
        <Realm className="org.apache.catalina.realm.UserDatabaseRealm"
               resourceName="UserDatabase"/>
      </Realm>
      &vhost-localhost;
    </Engine>
  </Service>
</Server>


其中关键的语句为:

<Valve classname="org.apache.catalina.valves.RemoteIpValve"
remoteIpHeader="X-Forwarded-For"
protocolHeader="X-Forwarded-Proto"
protocolHeaderHttpsValue="https"/>

配置双方的 X-Forwarded-Proto 就是为了正确地识别实际用户发出的协议是 http 还是 https。 

配置完成之后以下的请求访问

request.getScheme() 、request.isSecure() 、request.getRemoteAddr()、request.getRequestURL() 、response.sendRedirect( 相对url ) 

就都变为正确的结果了,就像用户在直接访问 Tomcat 一样。

转自:https://blog.csdn.net/tjcyjd/article/details/70185224

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