How are Servlet paths mapped?

补充点基础知识. Path mappings are used to map a URI to a contexts, handlers and servlets.

The following types of mapping are supported and applied in the order presented.

Absolute Mapping

Path Spec:      /path

Will match:     /path            path=/path  info=<null>

Will not match: /                /path/                /path/info                /path/info.jsp                /other</null>

Prefix Mapping

Path Spec:      /path/*

Will match:     /path            path=/path  info=<null>                /path/           path=/path  info=/                /path/info       path=/path  info=/info                /path/info.jsp   path=/path  info=/info.jsp

Will not match: /                /other</null>

Suffix Mapping

Path Spec:      *.jsp

Will match:     /path/info.jsp   path=info=/path/info.jsp

Will not match: /                /path                /path/                /path/info                /other

Default Mapping

Path Spec:      /

Will match:     /                path=       info=/                /path            path=       info=/path                /path/           path=       info=/path/                /path/info       path=       info=/path/info                /path/info.jsp   path=       info=/path/info.jsp                /other           path=       info=/other

Will not match:                 

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Typical examples

Context and Servlet with path

  Context Path Spec :    /context/*  Servlet Path Spec :    /servlet/*

  URI                ContextPath     ServletPath   PathInfo  =========================================================   /context/servlet   /context        /servlet      null  /context/servlet/  /context        /servlet      /  /context/servlet/x /context        /servlet      /x

Default Context

  Context Path Spec :    /  Servlet Path Spec :    /servlet/*

  URI                ContextPath     ServletPath   PathInfo  =========================================================   /servlet           ""              /servlet      null  /servlet/          ""              /servlet      /  /servlet/x         ""              /servlet      /x

Context and Suffix Servlet

  Context Path Spec :    /context/*  Servlet Path Spec :    *.txt

  URI                ContextPath     ServletPath   PathInfo  =========================================================   /context/xxx.txt   /context        ""            /xxx.txt

Context and Default Servlet

  Context Path Spec :    /context/*  Servlet Path Spec :    /

  URI                ContextPath     ServletPath   PathInfo  =========================================================   /context/xxx       /context        ""            /xxx

Default Context and Servlet

  Context Path Spec :    /  Servlet Path Spec :    /

  URI                ContextPath     ServletPath   PathInfo  =========================================================   /xxx               ""              ""            /xxx

来自:http://jetty.mortbay.org/jetty/faq?s=500-Servlets&t=Path%20Mapping