问题描述
本代码用于测试Tomcat服务器压力要求在原有的基础上做出如下改进：1、当连接返回的时间超过5S则认为连接失败，结束测试，返回失败结果。2、如果可以的话最好编写一个简单的图形化界面，用于输入线程数，显示返回结果等。package com.eteda.test;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.net.HttpURLConnection;import java.net.URL;public class TomcatTest {private static String url = "http://10.226.144.175:8080/index.jsp";private static Integer error = 0;private static Integer threads = 200;private static Long startTime;private static Long totleTime;public static void main(String[] args) {WorkThread[] workThreads = new WorkThread[threads];for (int i = 0; i < threads; i++) {workThreads[i] = new WorkThread();}startTime = System.currentTimeMillis();//System.out.printf("线程数组初始化耗时%d毫秒n", (System.currentTimeMillis() -startTime));for (int i = 0; i < threads; i++) {workThreads[i].start();}//if(error >= 1){//System.out.println("本次测试结束！压力超标，请调小线程数量再测试一次！");//}else{//System.out.println("本次测试结束！未达上限，请调大线程数量再测试一次！");//}}private static class WorkThread extends Thread {public void run() {@SuppressWarnings("unused")long start = System.currentTimeMillis();long end = 0;try {URL u = new URL(url);HttpURLConnection urlConn = (HttpURLConnection) u.openConnection();urlConn.setUseCaches(false);urlConn.setRequestProperty("Content-type","text/html; charset=UTF-8");urlConn.connect();InputStream is = urlConn.getInputStream();StringBuffer buffer = new StringBuffer();readToBuffer(buffer, is);end = System.currentTimeMillis();totleTime = end - startTime;} catch (Exception e) {synchronized (error) {error++;}e.printStackTrace();}synchronized (threads) {threads--;//System.out.printf("还有%d个未完线程, 耗时%d毫秒n", threads,//(System.currentTimeMillis() - startTime));if (threads == 0) {System.out.printf("总耗时：%d毫秒n",totleTime);System.out.printf("连接失败数量：%dn", error);}}}public void readToBuffer(StringBuffer buffer, InputStream is)throws IOException {String line; // 用来保存每行读取的内容BufferedReader reader = new BufferedReader(new InputStreamReader(is));line = reader.readLine(); // 读取第一行while (line != null) { // 如果 line 为空说明读完了buffer.append(line); // 将读到的内容添加到 buffer 中buffer.append("n"); // 添加换行符line = reader.readLine(); // 读取下一行}}}} 问题补充：wangqj 写道
解决方案
已经有轮子了，用压力测试工具，神马效果都能出来，试试loadrunner