《星火小说网源代码》url映射类分享

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package com.lovver.jrails.rest;

import javax.servlet.http.HttpServletRequest;

import org.apache.commons.lang.ArrayUtils;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.lang.WordUtils;

import com.lovver.jrails.common.config.JRailsConfig;

public class JRailsRouter {

	private static JRailsRouter jRailsRouter = null;

	public static JRailsRouter getInstants() {
		if (jRailsRouter == null) {
			jRailsRouter = new JRailsRouter();
		}
		return jRailsRouter;
	}

	public PathMapping getPathMapping(HttpServletRequest request,JRailsConfig jRailsConfig) {

		PathMapping pathMapping = new PathMapping();
		/*去掉ContextPath*/
		String contextPath=request.getContextPath();
		String pathInfo = request.getRequestURI();
		if(jRailsConfig.getJRailsServletConfig().isDebugMode()){
			System.out.println("requestURI="+pathInfo);
		}
		pathInfo = StringUtils.replace(pathInfo, contextPath, "");
		/*去掉url的servlet映射后缀*/
		String urlPrefix=jRailsConfig.getUrlPrefix();
		urlPrefix=urlPrefix.substring(1);
		pathInfo = StringUtils.replace(pathInfo, urlPrefix, "");
		/*开始进行url映射*/
		String arrPathMapping[] = {};
		if (StringUtils.isNotEmpty(pathInfo)) {
			if (pathInfo.length() > 1) {
				// pathInfo = "/controller/action/id"
				arrPathMapping = pathInfo.substring(1).split("/");
			}
		}
		/*url存在参数的场合*/
		String params[]={};
		if (arrPathMapping.length > 2) {
			params=new String[arrPathMapping.length -2];
			for(int i=2;i<arrPathMapping.length;i++){
				params[i-2]=arrPathMapping[i];				
			}
		}
		pathMapping.set_params(params);
		/*url不存在参数的场合*/
		//只有Controller
		String _controller = "";
		String _action = "index";
		try{
			_controller = this.normalizeName(arrPathMapping[0])+"Controller";
		}catch(Exception e){
		}
		try{
			try{
				// pathInfo = "/controller/id"
				Integer.parseInt(arrPathMapping[1]);
				_action = "index";
				params=(String[]) ArrayUtils.addAll(new String[]{arrPathMapping[1]}, params);
				pathMapping.set_params(params);
			}catch(Exception e){
				_action = arrPathMapping[1];
			}
			
		}catch(Exception e){
		}
		pathMapping.set_controller(_controller);
		pathMapping.set_action(_action);
		return pathMapping;
	}

	/**
	 * This method will change the uri name to some other way. You may override
	 * this function to supply another translate method. By default, this method
	 * will translate the uri to capitalize way and replace the '.', ' ', '-'
	 * and '_' to empty string and cpaitalize the next character. So, the uri
	 * like /index.html will be translate to IndexHtml, login-page will be
	 * LoginPage
	 * 
	 * @param uri
	 * @return
	 */
	protected String normalizeName(String uri) {
		char[] cap = { '.', ' ', '-', '_' };
		return WordUtils.capitalizeFully(uri, cap).replaceAll("\\.", "")
				.replaceAll(" ", "").replaceAll("-", "").replaceAll("_", "");
	}

	public class PathMapping {

		private String _controller = "";

		private String _action = "index";

		private String _params[] = {};

		public String get_controller() {
			return _controller;
		}


		public String[] get_params() {
			return _params;
		}


		public void set_params(String[] _params) {
			this._params = _params;
		}


		public void set_controller(String _controller) {
			this._controller = _controller;
		}

		public String get_action() {
			return _action;
		}

		public void set_action(String _action) {
			this._action = _action;
		}
	}
}