getServletPath()

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http://localhost:8080/myfirstServlet/index.jsp,注，通过index。jsp转到GenerServ的

getContextPath：返回，/myfirstServlet

getRequestURl：返回，/myfirstServlet/servlet/GenerServ

getServletPath

java.lang.String getServletPath()

Returns the part of this request's URL that calls the servlet. This path starts with a "/" character and includes either the servlet name or a path to the servlet, but does not include any extra path information or a query string. Same as the value of the CGI variable SCRIPT_NAME.

This method will return an empty string ("") if the servlet used to process this request was matched using the "/*" pattern.

返回请求URL中调用该servlet的那一部分，这个路径是以"/"开头的，要么包含servlet名，要么包含一个走到该servlet的路径，但是不包含任何额外的路径信息，或者一个查询字符串，如同CGI的变量SCRIPT_NAME，如果这个servlet的请求路径是用“/*”来匹配的，那么这个方法将返回""

附上两篇博文，便于理解:request.getServletPath()和request.getPathInfo()用法

getContextPath、getServletPath、getRequestURI的区别

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