摘要：文件引入請求工具工具發(fā)送請求，參數(shù)是開始請求參數(shù)創(chuàng)建對象創(chuàng)建對象配置請求參數(shù)設(shè)置參數(shù)和請求方式解決中文亂碼問題執(zhí)行請求異常請求參數(shù)，異常信息結(jié)束請求參數(shù)返回?cái)?shù)據(jù)異步執(zhí)行請求和并發(fā)測試異步執(zhí)行請求執(zhí)行并返回結(jié)果模擬并發(fā)測試模擬并發(fā)

        
            org.apache.httpcomponents
            httpclient
            4.5.3
        

package com.raytoo.common.toolbox.http;

import java.io.IOException;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.config.CookieSpecs;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.util.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * http 工具
 */
public class HttpTool {
    
    private static Logger logger = LoggerFactory.getLogger(HttpTool.class);
    
    private static String ENCODING = "UTF-8";
    
    private static String CONTENT_TYPE = "application/json";
    
    /**
     * 發(fā)送POST請求，參數(shù)是JSON
     */
    public static String requestPost(String url, String jsonParam){
        logger.info("HttpTool.requestPost 開始 請求url：" + url + ", 參數(shù)：" + jsonParam);
        //創(chuàng)建HttpClient對象
        CloseableHttpClient client = HttpClients.createDefault();
        //創(chuàng)建HttpPost對象
        HttpPost httpPost = new HttpPost(url);
        
        //配置請求參數(shù)
        RequestConfig requestConfig = RequestConfig.custom()
                .setCookieSpec(CookieSpecs.DEFAULT)
                .setExpectContinueEnabled(true)
                .setSocketTimeout(5000)  
                .setConnectTimeout(5000)  
                .setConnectionRequestTimeout(5000)  
                .build();
        
        httpPost.setConfig(requestConfig);
        
        String respContent = null;
            
        //設(shè)置參數(shù)和請求方式
        StringEntity entity = new StringEntity(jsonParam,ENCODING);//解決中文亂碼問題    
        entity.setContentEncoding(ENCODING);    
        entity.setContentType(CONTENT_TYPE);  
        
        httpPost.setEntity(entity);
            
        HttpResponse resp;
        try {
            //執(zhí)行請求
            resp = client.execute(httpPost);
            if(resp.getStatusLine().getStatusCode() == 200) {
                HttpEntity responseObj = resp.getEntity();
                respContent = EntityUtils.toString(responseObj,"UTF-8");
            }
        } catch (IOException e) {
            e.printStackTrace();
            logger.info("HttpTool.requestPost 異常 請求url：" + url + ", 參數(shù)：" + jsonParam + "，異常信息：" + e);
        }
        logger.info("HttpTool.requestPost 結(jié)束 請求url：" + url + ", 參數(shù)：" + jsonParam + "");
        //返回?cái)?shù)據(jù)
        return respContent;
    }
}

package com.raytoo.common.toolbox.http;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;

import com.alibaba.fastjson.JSON;
import com.google.common.collect.Lists;

/**
 * 異步執(zhí)行HTTP請求
 */
public class HttpCallable implements Callable {
    
    private String url;
    
    private String jsonParams;
    
    public HttpCallable(String url, String jsonParams){
        this.url = url;
        this.jsonParams = jsonParams;
    }

    /**
     * 執(zhí)行并返回結(jié)果
     */
    @Override
    public String call() throws Exception {
        return HttpTool.requestPost(url, jsonParams);
    }
    
    /**
     * 模擬并發(fā)測試
     */
    public static void main(String[] args) throws InterruptedException, ExecutionException {
        //模擬并發(fā)數(shù)
        int concurrencyNumber = 1000;
        
        List  resList = Lists.newArrayList();
        
        //執(zhí)行線程池
        ExecutorService ex = Executors.newFixedThreadPool(100);
        
        String url = "www.baidu.com";
        Map mapPatam = new HashMap<>();
        mapPatam.put("name", "測試");
        
        
        for(int i =0 ; i< concurrencyNumber; i++){
            Future callRes = ex.submit(new HttpCallable(url, JSON.toJSONString(mapPatam)));
            resList.add(i + ">>>" + callRes.get());
        }
        
        for(String s : resList){
            System.out.println("------>" + s);
        }
    }

}