package com.Java;
import org.apache.commons.io.FileUtils;
import java.io.File;
import java.io.IOException;
import java.net.URL;
//练习多线程Thread, 实现Runnable接口 实现多线程下载图片
public class TestThread2 implements Runnable{
private String url;//保存图片地址
private String name;//保存的文件名
public TestThread2(String url,String name) {
this.url=url;
this.name=name;
}
// 下载图片的执行体
@Override
public void run() {
WebDownloader webDownloader = new WebDownloader();
webDownloader.downloader(url, name);
System.out.println("下载了文件"+name);
}
public static void main(String[] args) {
TestThread2 thread1 = new TestThread2("https://www.kuangstudy.com/assert/course/c1/01.jpg","1.jpg");
TestThread2 thread2 = new TestThread2("https://www.kuangstudy.com/assert/course/c1/02.jpg","2.jpg");
TestThread2 thread3 = new TestThread2("https://www.kuangstudy.com/assert/course/c1/03.jpg","3.jpg");
// 因为多线程 所以是一起执行 并非t1t2t3
new Thread(thread1).start();
new Thread(thread2).start();
new Thread(thread3).start();
}
// 下载器
class WebDownloader{
// 下载方法
public void downloader(String url,String name){
try {
FileUtils.copyURLToFile(new URL(url), new File(name));
} catch (IOException e) {
e.printStackTrace();
System.out.println("IO异常,downloader方法出现了问题");
}
}
}
}