访问URL的内容

/* from 时 代 J a v a 公 众 号 - nowjava.com*/

import java.io.BufferedReader;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.net.URL;


public class Main {

  public static void main(String[] args) throws Exception {

    String urlStr = "https://nowjava.com";

    BufferedReader br = null;

    URL url = new URL(urlStr);

    InputStream ins = url.openStream();

    br = new BufferedReader(new InputStreamReader(ins));

    StringBuilder sb = new StringBuilder();

    String msg = null;

    while ((msg = br.readLine()) != null) {