五种不同的 URL 参数解析方法的性能比较

UrlParse.java

package conger;

import java.lang.reflect.Method;
import java.net.URL;
import java.net.URLDecoder;
import java.nio.charset.Charset;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.apache.catalina.util.RequestUtil;
import org.apache.http.NameValuePair;
import org.apache.http.client.utils.URLEncodedUtils;
import org.eclipse.jetty.util.MultiMap;
import org.eclipse.jetty.util.UrlEncoded;
 
public class UrlParse {
  
	private static final String url = "http://nlqosdrecv01.neulion.com/nfldrecv/ProxyBean?hasQueryString=true&msgID=247&eventType=HEARTBEAT&clientID=E79B80DE-2C57-53F9-F5A3-12EFE3041573&viewID=66119FDA-097C-240A-5F58-12EFFC154803&playTime=7452&streamType=1&streamURL=adaptive%3A%2F%2Fnlds131.neulion.com%3A443%2Fnlds_vod%2Fnfl%2Fvod%2F2013%2F01%2F06%2F55827%2F3_55827_ind_bal_2012_h_whole_1_pc.mp4&streamLength=7955&startupTime=1889&updateInterval=30000&bitrate=4500&os=Mac%20OS%2010.6.8&player=MAC%2011%2C5%2C502%2C136&browserVersion=Safari%205.1&bandwidth=4400&dropFrameCount=0&cdnName=nlds131.cdnak.neulion.com&bytesLoaded=3440846848&bytesLoadedDelta=23227392&cdnName=nlds131.cdnl3nl.neulion.com&bytesLoaded=179725312&bytesLoadedDelta=7340032&siteID=nfl&gameID=55827&streamDescription=GP%3A%201%2F6%2F2013%20IND%40BALbroadcast&productID=nflgp&homeTeam=BAL&userID=&awayTeam=IND&progType=broadcast&appType=desktop&gameDate=1%2F6%2F2013&windowMode=full%20mosaic&ipAddress=121.73.16.153";

	private String[] parameters;
	
	public UrlParse() throws Exception {
		URL u = new URL(url);
		String query = u.getQuery();
		MultiMap<String> valuesJetty = new MultiMap<String>();
		UrlEncoded.decodeTo(query, valuesJetty, "UTF-8", 1000);
		parameters = valuesJetty.keySet().toArray(new String[0]);
	}
	
	public static void main(String[] args) throws Exception {
		UrlParse parser = new UrlParse();
		parser.parse();
		parser.compare();
	}
	
	/**
	 * 把各个方法的解析结果打印出来，人工判断下是不是正确的。
	 * 其中 regex 和 split 没有处理 parameter array 的情况
	 * @throws Exception
	 */
	public void parse() throws Exception {

		URL u = new URL(url);
		String query = u.getQuery();
		List<NameValuePair> valueHttpclient = URLEncodedUtils.parse(query, Charset.forName("UTF-8"));
		System.out.println(valueHttpclient);
		
		MultiMap<String> valuesJetty = new MultiMap<String>();
		UrlEncoded.decodeTo(query, valuesJetty, "UTF-8", 1000);
		System.out.println(valuesJetty);
		
		Map<String, String[]> valueTomcat = new HashMap<String, String[]>();
		RequestUtil.parseParameters(valueTomcat, query, "UTF-8");
		for (Map.Entry<String, String[]> entry : valueTomcat.entrySet()) {
			System.out.print(entry.getKey() + ":" + entry.getValue()[0] + ";");
		}
		System.out.println(valueTomcat);
		
		for (String s : parameters) {
			Pattern p = Pattern.compile(s + "=([^&]*)(&|$)");
			Matcher m = p.matcher(URLDecoder.decode(url, "UTF-8"));
			if (m.find()) {
				System.out.print(s + ":" + m.group(1) + ";");
			}
		}
		System.out.println();
		String u1 = URLDecoder.decode(url, "UTF-8");
		for (String s : parameters) {
			String[] a = new String[100];
			if (u1.indexOf(s) != -1) {
				a = (u1.substring(u1.indexOf(s))).split("&");
				String[] b = a[0].split("=");
				if (b.length == 2) {
					System.out.print(s + ":" + b[1] + ";");
				}
			}
		}
		System.out.println();
	}

	public void compare() throws Exception {

		System.out.println("---first---");
		this.runTest();		
		
		System.out.println("---second---");
		this.runTest();		

		System.out.println("---third---");
		this.runTest();
		
		System.out.println("---fouth---");
		this.runTest();
	}
	
	public void runTest() throws Exception {
		this.runMethod("httpclient");
		this.runMethod("jettyUtil");
		this.runMethod("tomcat");
		this.runMethod("regex");
		this.runMethod("split");
	}
	
	public void runMethod(String method) throws Exception {
		long start = System.currentTimeMillis();
		Method m = this.getClass().getDeclaredMethod(method, (Class<?>[])null);
		for (int i = 0; i < 100000; i++) {
			m.invoke(this, (Object[])null);
		}
		long end = System.currentTimeMillis();
		System.out.println(method + ": " + (end - start));
	}
	
	public void httpclient() throws Exception {
		URL u = new URL(url);
		String query = u.getQuery();
		URLEncodedUtils.parse(query, Charset.forName("UTF-8"));
	}
	
	public void jettyUtil() throws Exception {
		URL u = new URL(url);
		String query = u.getQuery();
		MultiMap<String> values = new MultiMap<String>();
		UrlEncoded.decodeTo(query, values, "UTF-8", 1000);
	}
	
	public void tomcat() throws Exception {
		URL u = new URL(url);
		String query = u.getQuery();
		Map<String, String> values = new HashMap<String, String>();
		RequestUtil.parseParameters(values, query, "UTF-8");
	}
	
	public void regex() throws Exception {
		String u = URLDecoder.decode(url, "UTF-8");
		for (String s : parameters) {
			Pattern p = Pattern.compile(s + "=([^&]*)(&|$)");
			Matcher m = p.matcher(u);
			if (m.find()) {
				m.group(1);
			}
		}
	}
	
	public void split() throws Exception {
		String u = URLDecoder.decode(url, "UTF-8");
		for (String s : parameters) {
			String[] a = new String[100];
			if (u.indexOf(s) != -1) {
				a = (u.substring(u.indexOf(s))).split("&");
				a[0].split("=");
			}
		}
	}
}