具有spring mvc的多个域 [英] Multiple domains with spring mvc

问题描述

假设我有一个应用程序必须缩短URL，但也做其他事情。 （例如 google.com 和 goo.gl ，或 facebook.com 和 fb.me ）。

Let's say I have an application that has to shorten URLs, but also do other things. (like google.com and goo.gl, or facebook.com and fb.me).

简单地部署两个应用程序很简单，但是（对于现在）成为一个人更简单。使用spring和spring-mvc。我有以下映射：

It will be easy to simply deploy two applications, but (for now) it's simpler to be just one. Using spring and spring-mvc. I have the following mappings:

@RequestMapping(value="/{shortUrlKey}", headers="Host=foo.br")
...
@RequestMapping(value="/{username}")

唉，标题注释不是提供更具体的信息，而是作为限制。所以如果我有这两个，只有后者被调用，即使我打开它作为 http://foo.br/asdf 。如果只留下前者，它适用于来自 foo.br 的那些，并且如果主机不同则不会打开任何内容。

Alas, the headers annotation acts not as giving more specific information, but as restricting instead. So if I have these two, only the latter is invoked, even if I open it as http://foo.br/asdf. If leave only the former, it works for those coming from foo.br, and doesn't open anything if the host is different.

所以，问题：

• 如何为相同的路径制作两个处理程序，但不同的URL /主机


• 是否可以使用属性占位符配置器动态解析主机（而不是在注释中对其进行硬编码）

如果有一些可插拔的方法解析机制，也许两者都可以。有这样的吗？

Perhaps both would work if there is some pluggable mechanism for method resolution. Is there such?

推荐答案

我的直接建议是写一个servlet过滤器（或一个Spring HandlerInterceptor ），它将从请求中获取主机名，将其添加到原始请求的路径，然后转发请求。

My immediate suggestion would be to write a servlet filter (or a Spring HandlerInterceptor), which would take the host name from the request, prepend it to the original requested path, then forward on the request.

例如，根据请求的URL http://goo.gl/my/path ，过滤器将转发到 /goo.gl/my/path 。然后，Spring MVC映射就可以获得一些东西。 ant样式通配符语法（例如** / my / path）或路径变量样式（例如{requestHost} / my /路径可能会有所帮助。

For example, given the requested URL http://goo.gl/my/path, the filter would forward to /goo.gl/my/path. The Spring MVC mappings would then have something to get their teeth into. The ant-style wildcard syntax (e.g. "**/my/path") or path-variable style (e.g. "{requestHost}/my/path" might be helpful there.

或者，过滤器可以设置包含所请求主机的自定义标头或请求属性，但这可能更少灵活。

Alternatively, the filter could set a custom header or request attribute containing the requested host, but that's probably less flexible.

我不确定你的问题的第二部分是什么意思。

I'm not sure what you mean by the second part of your question, though.

这是一个工作片段：

@Override
public boolean preHandle(HttpServletRequest request,
        HttpServletResponse response, Object handler) throws Exception {

    if (request.getRequestURL().toString().contains(shortenerDomain)
            && !request.getRequestURI().startsWith(SHORT_URI_PREFIX)) {

        request.getRequestDispatcher(SHORT_URI_PREFIX + request.getRequestURI())
                .forward(request, response);
        return false;
    } else {
        return true;
    }
}

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