Tomcat虚拟主机&通配符dns匹配 [英] Tomcat Virtual Host & Wildcard dns matching

问题描述

我创建了一个应用程序，它需要接受通配符dns并使用该通配符值向数据库请求。我试图为自己模拟一个虚拟环境来实现我想要的东西：

I have created an application which needs to accept wildcard dns and request to database using that wildcard value. I tried to simulate a virtual environment for myself to achieve what I want like this:

1）在我的Linux操作系统中我改变了/ etc / hosts并添加了这些行：

1) in my Linux OS I changed the /etc/hosts and add these lines :

127.0.0.1   test-domain.com
127.0.0.1   mehdi.test-domain.com

2）我更改了我的tomcat server.xml文件，如下所示：

2) I changed my tomcat server.xml file as follows :

<Host name="test-domain.com" 
    appBase="webapps/ROOT" 
    unpackWARs="true" 
    autoDeploy="true"
    xmlValidation="false" 
    xmlNamespaceAware="false">
    <Alias>www.test-domain.com</Alias>
    <Context path="" docBase="."/>
</Host>

<Host name="*.test-domain.com" 
        appBase="webapps/ROOT" 
        unpackWARs="true" 
        autoDeploy="true"
        xmlValidation="false" 
        xmlNamespaceAware="false">
        <Alias>*.test-domain.com</Alias>
        <Context path="" docBase="."/>
</Host> 

3）我将项目war文件'Root.war'部署到$ {TOMCAT} / webapps / ROOT文件夹

3) I deploy my project war file 'Root.war' into the ${TOMCAT}/webapps/ROOT folder

现在当我请求 www.test-domain.com 时我看到网络主页页面，我希望当我输入这个网址 mehdi.test-domain.com 时，我会从网址中获取mehdi并对其执行操作并向我的用户显示mehdi页面。

now when I request "www.test-domain.com" I see the web home page, and I want when I type this url "mehdi.test-domain.com", I fetch mehdi from the URL and do something with it and show mehdi page to my users.

问题1：如何在我的应用程序中获取通配符值？

Question 1: How I can fetch the wildcard value in my application ?

问题2：我们是否有可能让tomcat在运行时将请求URL转换为其他内容并将其传递给应用程序（我需要通配符值ex：mehdi）？

Question 2: Is it possible that we let tomcat convert the request URL to something else at runtime like this and pass it to the application (I need the wildcard value ex: mehdi)?

http://mehdi.test-domain.com CONVERT TO http://test-domain.com/mehdi

http://mehdi.test-domain.com CONVERT TO http://test-domain.com/mehdi

问题3：是否可以只有第二个<主机名= ... 定义并删除第一个？我怎么能在我的应用程序中处理它？<​​/ p>

Question 3: Is it possible to have only the second < Host name=... definition and remove the first one? how could I handle it inside my application ?

推荐答案

Q1：使用request.getServerName（）

Q1: use request.getServerName()

Q2：您可以使用UrlRewrite过滤器或类似的

Q2: you can use UrlRewrite filter or similar

Q3：不支持AFAIK通配符，因此您需要单个主机名=localhost将收到所有请求
参见如何在Tomcat和Java上托管随机或通配符子域

Q3: AFAIK wildcards are not supported so you will need single Host name="localhost" that will receive all requests See also How to host random or wildcard subdomains on Tomcat and Java

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