(转载)获取服务器响应时间

package com.speed;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.lang.reflect.Array;
import java.net.URL;

public class TestServer {
    static int loopTimes = 500;

    public Parameter readFromArgFile(String str) {
        FileInputStream fileInput;
        BufferedReader br;
        Parameter param = new Parameter();
        try {
            fileInput = new FileInputStream(new File(str));
            br = new BufferedReader(new InputStreamReader(fileInput));

            String line;
            while ((line = br.readLine()) != null) {
                if (line.startsWith("URL") == true && line.indexOf("=") >= 3) {
                    int f = line.indexOf("=");
                    String urlstring = line.substring(f + 1);
                    urlstring.trim();
                    param.url = new URL(urlstring);
                } else if (line.startsWith("METHOD") == true
                        && line.indexOf("=") >= 3) {
                    int f = line.indexOf("=");
                    String method = line.substring(f + 1);
                    method.trim();
                    param.method = method;
                } else if (line.indexOf("=") != -1) {
                    int f = line.indexOf("=");
                    String key = line.substring(0, f - 1);
                    String value = line.substring(f + 1);
                    param.addPair(key.trim(), value.trim());
                }
            }
            fileInput.close();
            br.close();
        } catch (FileNotFoundException e) {
            System.out.println("File" + str + "not found.");
        } catch (NullPointerException e) {

        } catch (IOException e) {
            System.out.println(e);
        }
        return param;
    }

    public static void main(String[] args) {
        int i;
        int j;
        Parameter param;
        TestServer tester = new TestServer();
        for (i = 0; i < Array.getLength(args); i++) {
            param = tester.readFromArgFile(args[i]);
            for (j = 0; j < loopTimes; j++) {
                Thread th = new Thread(new TestThread(param));
                th.start();
            }
        }
    }
}

package com.speed;

import java.lang.reflect.Array;
import java.net.URL;

public class Parameter {
    URL url;
    String[] key;
    String[] value;
    String method;
    int length = 0;

    public void addPair(String k, String v) {
        Array.set(key, length, k);
        Array.set(value, length, v);
        length++;
    }
}

package com.speed;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Date;

public class TestThread implements Runnable {
    Parameter param;

    TestThread(Parameter par) {
        param = par;
    }

    public void run() {
        long time1 = new Date().getTime();
        try {
            URL target = param.url;
            HttpURLConnection conn = (HttpURLConnection) target
                    .openConnection();
            conn.setRequestMethod(param.method);
            int i;
            for (i = 0; i < param.length; i++) {
                conn.setRequestProperty(param.key[i], param.value[i]);
            }
            conn.connect();
            BufferedReader in = new BufferedReader(new InputStreamReader(conn
                    .getInputStream()));
            String inputLine;
            while ((inputLine = in.readLine()) != null);
        } catch (Exception e) {

        }
        long time2 = new Date().getTime();
        System.out.println((time2 - time1)/1000+"秒");
    }

}

由于这个是在命令行模式下运行的，我的附件是这样写的

URL=http://mail.163.com
METHOD=GET
User-Agent=Internet Explorer
Host=mail.163.com
Accept=image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash, application/msword, application/vnd.ms-excel, application/vnd.ms-powerpoint, application/x-silverlight, */*
Accept-Language=zh-cn
Content-Type=application/x-www-form-urlencoded
Accept-Encoding=gzip, deflate
User-Agent=Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; Foxy/1; .NET CLR 2.0.50727;MEGAUPLOAD 1.0)
Connection=Keep-Alive
Cache-Control=no-cache