java 用于匹配以斜杠 ("/") 结尾的 URL 的 Servlet URL 模式
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Servlet URL pattern to match a URL that ends with a slash ("/")
提问by Jon Cram
I'd like to specify a Servlet URL pattern to match a URL that ends with a slash ("/") and only a slash.
我想指定一个 Servlet URL 模式来匹配以斜杠 ("/") 结尾且仅以斜杠结尾的 URL。
I understand that the pattern
我明白这个模式
/example/path/*
will match a URL of
将匹配一个 URL
http://example.com/example/path/
and that this appears to work. However, that same pattern would also match URLs of
并且这似乎有效。但是，相同的模式也会匹配
http://example.com/example/path/a/
http://example.com/example/path/b/
http://example.com/example/path/c/
I'm merely looking for a URL pattern that will match http://example.com/example/path/only without also matching http://example.com/example/path/a/and so on.
我只是在寻找一个http://example.com/example/path/只匹配而不匹配http://example.com/example/path/a/等等的 URL 模式。
Clarification: a URL pattern ending with a slash is not allowed.
说明：不允许以斜杠结尾的 URL 模式。
采纳答案by Peter ?tibrany
It's quite possible that you can't do this by mapping in web.xml.
您很可能无法通过在 web.xml 中进行映射来做到这一点。
What you can do is to map servlet to /mypath/* and then check part after /mypath/ via request.getPathInto(). If it is "/", run your code. If it isn't, return 404 error.
您可以做的是将 servlet 映射到 /mypath/*，然后通过 request.getPathInto() 检查 /mypath/ 之后的部分。如果它是“/”，请运行您的代码。如果不是，则返回 404 错误。
回答by Yu Chen
In NetBeans, if I go to the Servlets tab on the web.xml file, the IDE would complain with, "Error: URL patterns cannot end with slash (/)". From the URL spec, it reads,
在 NetBeans 中，如果我转到 web.xml 文件上的 Servlets 选项卡，IDE 会抱怨“错误：URL 模式不能以斜杠 (/) 结尾”。从URL 规范中，它读取，
httpurl = "http://" hostport [ "/" hpath [ "?" search ]]
hpath = hsegment *[ "/" hsegment ]
So yes, an URI with an ending slash is invalid.
所以是的，带有结尾斜杠的 URI 是无效的。
