1、多线程工具TreadTestHttp
package com;
import java.util.concurrent.CountDownLatch;
public class TreadTestHttp {
public static void main(String[] args) throws InterruptedException {
Runnable taskTemp = new Runnable() {
// 注意，此处是非线程安全的，留坑
private int iCounter;
@Override
public void run() {
for(int i = 0; i < 1; i++) {
// 发起请求
String r = HttpClientUtil.doGet("http://localhost:9999/fxcrs/test/test");
System.out.println("请求结果="+r);
iCounter++;
System.out.println(System.nanoTime() + " [" + Thread.currentThread().getName() + "] iCounter = " + iCounter);
try {
Thread.sleep(1);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
};
TreadTestHttp latchTest = new TreadTestHttp();
// 模拟同时开7个线程访问
latchTest.startTaskAllInOnce(7, taskTemp);
}
public long startTaskAllInOnce(int threadNums, final Runnable task) throws InterruptedException {
final CountDownLatch startGate = new CountDownLatch(1);
final CountDownLatch endGate = new CountDownLatch(threadNums);
for(int i = 0; i < threadNums; i++) {
Thread t = new Thread() {
public void run() {
try {
// 使线程在此等待，当开始门打开时，一起涌入门中
startGate.await();
try {
task.run();
} finally {
// 将结束门减1，减到0时，就可以开启结束门了
endGate.countDown();
}
} catch (InterruptedException ie) {
ie.printStackTrace();
}
}
};
t.start();
}
long startTime = System.nanoTime();
System.out.println(startTime + " [" + Thread.currentThread() + "] All thread is ready, concurrent going...");
// 因开启门只需一个开关，所以立马就开启开始门
startGate.countDown();
// 等等结束门开启
endGate.await();
long endTime = System.nanoTime();
System.out.println(endTime + " [" + Thread.currentThread() + "] All thread is completed.");
return endTime - startTime;
}
}2、get和post请求工具HttpClientUtil
package com;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
class HttpClientUtil {
public static String doGet(String httpurl) {
HttpURLConnection connection = null;
InputStream is = null;
BufferedReader br = null;
String result = null;// 返回结果字符串
try {
// 创建远程url连接对象
URL url = new URL(httpurl);
// 通过远程url连接对象打开一个连接，强转成httpURLConnection类
connection = (HttpURLConnection) url.openConnection();
// 设置连接方式：get
connection.setRequestMethod("GET");
// 设置连接主机服务器的超时时间：15000毫秒
connection.setConnectTimeout(15000);
// 设置读取远程返回的数据时间：60000毫秒
connection.setReadTimeout(60000);
// 发送请求
connection.connect();
// 通过connection连接，获取输入流
if (connection.getResponseCode() == 200) {
is = connection.getInputStream();
// 封装输入流is，并指定字符集
br = new BufferedReader(new InputStreamReader(is, "UTF-8"));
// 存放数据
StringBuffer sbf = new StringBuffer();
String temp = null;
while ((temp = br.readLine()) != null) {
sbf.append(temp);
sbf.append("\r\n");
}
result = sbf.toString();
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
// 关闭资源
if (null != br) {
try {
br.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (null != is) {
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
connection.disconnect();// 关闭远程连接
}
return result;
}
public static String doPost(String httpUrl, String param) {
HttpURLConnection connection = null;
InputStream is = null;
OutputStream os = null;
BufferedReader br = null;
String result = null;
try {
URL url = new URL(httpUrl);
// 通过远程url连接对象打开连接
connection = (HttpURLConnection) url.openConnection();
// 设置连接请求方式
connection.setRequestMethod("POST");
// 设置连接主机服务器超时时间：15000毫秒
connection.setConnectTimeout(15000);
// 设置读取主机服务器返回数据超时时间：60000毫秒
connection.setReadTimeout(60000);
// 默认值为：false，当向远程服务器传送数据/写数据时，需要设置为true
connection.setDoOutput(true);
// 默认值为：true，当前向远程服务读取数据时，设置为true，该参数可有可无
connection.setDoInput(true);
// 设置传入参数的格式:请求参数应该是 name1=value1&name2=value2 的形式。
connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
// 设置鉴权信息：Authorization: Bearer da3efcbf-0845-4fe3-8aba-ee040be542c0
connection.setRequestProperty("Authorization", "Bearer da3efcbf-0845-4fe3-8aba-ee040be542c0");
// 通过连接对象获取一个输出流
os = connection.getOutputStream();
// 通过输出流对象将参数写出去/传输出去,它是通过字节数组写出的
os.write(param.getBytes());
// 通过连接对象获取一个输入流，向远程读取
if (connection.getResponseCode() == 200) {
is = connection.getInputStream();
// 对输入流对象进行包装:charset根据工作项目组的要求来设置
br = new BufferedReader(new InputStreamReader(is, "UTF-8"));
StringBuffer sbf = new StringBuffer();
String temp = null;
// 循环遍历一行一行读取数据
while ((temp = br.readLine()) != null) {
sbf.append(temp);
sbf.append("\r\n");
}
result = sbf.toString();
}
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
// 关闭资源
if (null != br) {
try {
br.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (null != os) {
try {
os.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if (null != is) {
try {
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
// 断开与远程地址url的连接
connection.disconnect();
}
return result;
}
}3、实际的运行效果
432371083711700 [Thread[main,5,main]] All thread is ready, concurrent going...
请求结果={"errorText":"同一接口访问上限，请稍后再试","iTotalRecords":0,"aaData":"","iTotalDisplayRecords":0,"errorCode":"bm_code_url_max_count","sEcho":"","iDisplayStart":0}
请求结果={"errorText":"同一接口访问上限，请稍后再试","iTotalRecords":0,"aaData":"","iTotalDisplayRecords":0,"errorCode":"bm_code_url_max_count","sEcho":"","iDisplayStart":0}
请求结果={"errorText":"同一接口访问上限，请稍后再试","iTotalRecords":0,"aaData":"","iTotalDisplayRecords":0,"errorCode":"bm_code_url_max_count","sEcho":"","iDisplayStart":0}
请求结果={"errorText":"同一接口访问上限，请稍后再试","iTotalRecords":0,"aaData":"","iTotalDisplayRecords":0,"errorCode":"bm_code_url_max_count","sEcho":"","iDisplayStart":0}
432371398025100 [Thread-0] iCounter = 3
432371397965500 [Thread-4] iCounter = 2
432371397920900 [Thread-1] iCounter = 1
432371398091600 [Thread-2] iCounter = 4
请求结果={"errorText":"同一接口访问上限，请稍后再试","iTotalRecords":0,"aaData":"","iTotalDisplayRecords":0,"errorCode":"bm_code_url_max_count","sEcho":"","iDisplayStart":0}
432371398524800 [Thread-6] iCounter = 5
请求结果={"errorText":"操作成功","iTotalRecords":0,"aaData":"","iTotalDisplayRecords":0,"errorCode":"success","sEcho":"","iDisplayStart":0}
432371410285100 [Thread-3] iCounter = 6
请求结果={"errorText":"操作成功","iTotalRecords":0,"aaData":"","iTotalDisplayRecords":0,"errorCode":"success","sEcho":"","iDisplayStart":0}
432371410399200 [Thread-5] iCounter = 7
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