使用HttpClient模拟并发请求 - 压力测试

摘要：文件引入请求工具工具发送请求，参数是开始请求参数创建对象创建对象配置请求参数设置参数和请求方式解决中文乱码问题执行请求异常请求参数，异常信息结束请求参数返回数据异步执行请求和并发测试异步执行请求执行并返回结果模拟并发测试模拟并发

        
            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";
    
    /**
     * 发送POST请求，参数是JSON
     */
    public static String requestPost(String url, String jsonParam){
        logger.info("HttpTool.requestPost 开始 请求url：" + url + ", 参数：" + jsonParam);
        //创建HttpClient对象
        CloseableHttpClient client = HttpClients.createDefault();
        //创建HttpPost对象
        HttpPost httpPost = new HttpPost(url);
        
        //配置请求参数
        RequestConfig requestConfig = RequestConfig.custom()
                .setCookieSpec(CookieSpecs.DEFAULT)
                .setExpectContinueEnabled(true)
                .setSocketTimeout(5000)  
                .setConnectTimeout(5000)  
                .setConnectionRequestTimeout(5000)  
                .build();
        
        httpPost.setConfig(requestConfig);
        
        String respContent = null;
            
        //设置参数和请求方式
        StringEntity entity = new StringEntity(jsonParam,ENCODING);//解决中文乱码问题    
        entity.setContentEncoding(ENCODING);    
        entity.setContentType(CONTENT_TYPE);  
        
        httpPost.setEntity(entity);
            
        HttpResponse resp;
        try {
            //执行请求
            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 异常 请求url：" + url + ", 参数：" + jsonParam + "，异常信息：" + e);
        }
        logger.info("HttpTool.requestPost 结束 请求url：" + url + ", 参数：" + jsonParam + "");
        //返回数据
        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;

/**
 * 异步执行HTTP请求
 */
public class HttpCallable implements Callable {
    
    private String url;
    
    private String jsonParams;
    
    public HttpCallable(String url, String jsonParams){
        this.url = url;
        this.jsonParams = jsonParams;
    }

    /**
     * 执行并返回结果
     */
    @Override
    public String call() throws Exception {
        return HttpTool.requestPost(url, jsonParams);
    }
    
    /**
     * 模拟并发测试
     */
    public static void main(String[] args) throws InterruptedException, ExecutionException {
        //模拟并发数
        int concurrencyNumber = 1000;
        
        List  resList = Lists.newArrayList();
        
        //执行线程池
        ExecutorService ex = Executors.newFixedThreadPool(100);
        
        String url = "www.baidu.com";
        Map mapPatam = new HashMap<>();
        mapPatam.put("name", "测试");
        
        
        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);
        }
    }

}