package com.test.net.utils;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.net.URL;
/**
* @author God
* url工具类下载文件
*/
public class URLReader {
//发现要比httpurl下载要快的多呵呵
public static void main(String[] args) throws Exception {
//下载一个图片
//String urlpath = "https://img6.bdstatic.com/img/image/smallpic/1.jpg";
//下载一个qq旋风软件
String urlpath ="http://dldir1.qq.com/invc/cyclone/QQDownload_Setup_48_773_400.exe";
URL url = new URL(urlpath);
//url的基本函数
System.out.println(url.getAuthority());
System.out.println(url.getContent());
System.out.println(url.getDefaultPort());
System.out.println(url.getHost());
System.out.println(url.getPath());
System.out.println(url.getPort());
System.out.println(url.getProtocol());
//下在资源
DataInputStream dataInputStream = new DataInputStream(url.openStream());
FileOutputStream fileOutputStream = new FileOutputStream(new File(getStrName(urlpath)));
byte[] bytes = new byte[1024];
int length = 0;
while ((length = dataInputStream.read(bytes)) != -1) {
fileOutputStream.write(bytes, 0, length);
System.out.println("下载中....");
}
System.out.println("下载完成...");
dataInputStream.close();
fileOutputStream.close();
}
public static String getStrName(String url) {
String[] sarry = url.split("/");
return sarry[sarry.length - 1];
}
}
//
//
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