编写测试类实现并发访问固定URL(亲测能用!!!)

1.类目录

 2.LatchTest.java类

package com.test;

import java.util.concurrent.CountDownLatch;

public class LatchTest {
static Runnable taskTemp = new Runnable() {

// 注意，此处是非线程安全的留坑
private int iCounter;

@Override
public void run() {
System.out.println("=====222========");
for(int i = 0; i < 10; i++) {
// 发起请求
//http://localhost:8080/insertUser?name=赵云&age=18&id=18
//http://localhost:8080/insertUser?name=aaa&age=18&id=1811

try {
HttpClientOp.doGet("http://localhost:8080/insertUser?name=aaa&age=18&id=1811");//自己的URL地址,注意:name=汉字会报错
} catch (Exception e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
iCounter++;
System.out.println(System.nanoTime() + " [" + Thread.currentThread().getName() + "] iCounter = " + iCounter);
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
};
public static void main(String[] args) throws InterruptedException {
System.out.println("=====111========");
taskTemp.run();

LatchTest latchTest = new LatchTest();
latchTest.startTaskAllInOnce(5, 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.HttpClientOp类

package com.test;

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;

public class HttpClientOp {
public static String doGet(String httpurl) throws Exception {
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();
System.out.println("======333======="+connection.getContent());
// 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(" ");
}
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
}

*/

//绿色部分不要加,加上之后测试不能通过
br.close();
is.close();
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(" ");
}
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;
}
}

4.测试截图:

 报错问题没有解决,但是确实能入库操作实现并行访问,截图如下:

 

 5.HttpClientOp.doGet("http://localhost:8080/insertUser?name=aaa&age=18&id=1811");//自己的URL地址,注意:name=汉字会报错

报错问题,大家谁解决了,欢迎回复,谢谢!!!