/**
* http://example.com:8080/over/there?name=ferret#nose \__/ \______________/\_________/
* \_________/ \__/ | | | | | scheme authority path query fragment
*
* <p>OR
*
* <p>[scheme:][//authority][path][?query][#fragment]
*
* @param request
* @param response
* @return
* @throws ServletException
* @throws IOException
*/
Action dispatch(HttpServletRequest request) throws ServletException, IOException {
String path = request.getRequestURI();
String ctxP = request.getContextPath();
if (ctxP.length() > 0) {
path = path.substring(ctxP.length());
}
// set default character encoding to "utf-8" if encoding is not set:
if (request.getCharacterEncoding() == null) {
request.setCharacterEncoding("UTF-8");
}
String reqMethod = request.getMethod().toUpperCase();
ActionConfig actionConfig = null;
String[] urlArgs = null;
/* 寻找处理请求的程序（方法） */
for (UrlMatcher m : this.matchersMap.get(reqMethod)) {
urlArgs = m.getUrlParameters(path);
if (urlArgs != null) {
actionConfig = urlMapMap.get(reqMethod).get(m);
break;
}
}
if (actionConfig != null) {
return new Action(actionConfig, urlArgs, path);
}
return null;
}
private static boolean match(String patt, String s, Request req) {
HashMap<String, String> m = new HashMap<String, String>();
if (!UrlMatcher.match(patt, s, m)) return false;
for (Map.Entry<String, String> e : m.entrySet()) req.set(e.getKey(), e.getValue());
return true;
}
