并发调用get请求

http://zeusami.iteye.com/blog/1172864

package com.alibaba.xteam.web.travel.module.rpc;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import java.util.Map;

import org.apache.http.client.ClientProtocolException;

public class PayTest {

    public static void main(String[] args) throws ClientProtocolException, IOException   {

        for(int i=0;i<10;i++){
            new Thread(new Runnable(){

                @Override
                public void run() {

                    //发送 GET 请求
                    String s1=PayTest.sendGet("http://10.125.25.187/dingtalk/hx/index.do","debug=y");

                    String s2=PayTest.sendGet("http://10.125.25.187/open/didi/pay/pay_notify.json", "orderId=5675551694383500500&normalDistance=11&totalPrice=11.33&status=700&callbackInfo=3831,221");

                    //String s2=PayTest.sendGet("http://10.125.25.187/dingtalk/dingtalk/taxi/special/createOrder.jsonp","__Order.create()__=&passengerGeotype=wgs84&serviceType=KC&carLevel=KC&cityId=5&appTime=1464100743424&fromCityName=%E6%9D%AD%E5%B7%9E%E5%B8%82&fromAddr=%E9%98%BF%E9%87%8C%E5%B7%B4%E5%B7%B4%E8%A5%BF%E6%BA%AA%E5%9B%AD%E5%8C%BA&fromAddrDetail=&fromLongitude=120.025459&fromLatitude=30.2791019&toCityName=%E6%9D%AD%E5%B7%9E%E5%B8%82&toAddr=%E5%98%89%E7%A6%BE%E8%8A%B1%E8%8B%918%E5%B9%A2&toLongitude=120.096661&toLatitude=30.272399&passengerMobile=15088688387&businessCategory=WORK&memo=uu&timeType=IN_TIME&_=1464100743427&callback=jsonp");
                    System.out.println(s1);

                }

            }
            ).start();

        }

    }

    public static String convertStreamToString(InputStream is) {
        BufferedReader reader = new BufferedReader(new InputStreamReader(is));
        StringBuilder sb = new StringBuilder();

        String line = null;
        try {
            while ((line = reader.readLine()) != null) {
                sb.append(line + "\n");
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                is.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return sb.toString();
    }

    /**
     * 向指定URL发送GET方法的请求
     *
     * @param url 发送请求的URL
     * @param param 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
     * @return URL 所代表远程资源的响应结果
     */
    public static String sendGet(String url, String param) {
        String result = "";
        BufferedReader in = null;
        try {
            String urlNameString = url + "?" + param;
            URL realUrl = new URL(urlNameString);
            // 打开和URL之间的连接
            URLConnection connection = realUrl.openConnection();
            // 设置通用的请求属性
            connection.setRequestProperty("accept", "*/*");
            connection.setRequestProperty("connection", "Keep-Alive");
            connection.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            // 建立实际的连接
            connection.connect();
            // 获取所有响应头字段
            Map<String, List<String>> map = connection.getHeaderFields();
            // 遍历所有的响应头字段
            for (String key : map.keySet()) {
                System.out.println(key + "--->" + map.get(key));
            }
            // 定义 BufferedReader输入流来读取URL的响应
            in = new BufferedReader(new InputStreamReader(connection.getInputStream()));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            System.out.println("发送GET请求出现异常！" + e);
            e.printStackTrace();
        }
        // 使用finally块来关闭输入流
        finally {
            try {
                if (in != null) {
                    in.close();
                }
            } catch (Exception e2) {
                e2.printStackTrace();
            }
        }
        return result;
    }

    /**
     * 向指定 URL 发送POST方法的请求
     *
     * @param url 发送请求的 URL
     * @param param 请求参数，请求参数应该是 name1=value1&name2=value2 的形式。
     * @return 所代表远程资源的响应结果
     */
    public static String sendPost(String url, String param) {
        PrintWriter out = null;
        BufferedReader in = null;
        String result = "";
        try {
            URL realUrl = new URL(url);
            // 打开和URL之间的连接
            URLConnection conn = realUrl.openConnection();
            // 设置通用的请求属性
            conn.setRequestProperty("accept", "*/*");
            conn.setRequestProperty("connection", "Keep-Alive");
            conn.setRequestProperty("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;SV1)");
            // 发送POST请求必须设置如下两行
            conn.setDoOutput(true);
            conn.setDoInput(true);
            // 获取URLConnection对象对应的输出流
            out = new PrintWriter(conn.getOutputStream());
            // 发送请求参数
            out.print(param);
            // flush输出流的缓冲
            out.flush();
            // 定义BufferedReader输入流来读取URL的响应
            in = new BufferedReader(new InputStreamReader(conn.getInputStream()));
            String line;
            while ((line = in.readLine()) != null) {
                result += line;
            }
        } catch (Exception e) {
            System.out.println("发送 POST 请求出现异常！" + e);
            e.printStackTrace();
        }
        // 使用finally块来关闭输出流、输入流
        finally {
            try {
                if (out != null) {
                    out.close();
                }
                if (in != null) {
                    in.close();
                }
            } catch (IOException ex) {
                ex.printStackTrace();
            }
        }
        return result;
    }

}