获取网络下载请求工具类

网络下载数据

<span style="font-family:Comic Sans MS;font-size:18px;">package com.example.week2_day3_downloadjson.utils;

import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;

//获取网络资源
public class Utils {
	public static String getJson(String path){
		ByteArrayOutputStream out=new ByteArrayOutputStream();
		URL url;
		String json="";//接收json数据
		try {
		
			url=new URL(path);
			HttpURLConnection connection=(HttpURLConnection) url.openConnection();//打开网络连接
			connection.setReadTimeout(5000);//设置连接请求时间
			connection.setDoInput(true);//设置连接
			connection.connect();//连接
			if(connection.getResponseCode()==200){
				InputStream input = connection.getInputStream();
				byte[] buffer=new byte[1024];
				int temp=0;
				while ((temp=input.read(buffer))!=-1) {
					out.write(buffer, 0, temp);
					out.flush();
				}
			}
			return out.toString();
		} catch (Exception e) {
		e.printStackTrace();
		}
		return json;
		
	}

}
</span>