注意事项
1、用户权限需要添加android.permission.INTERNET
2、不能在主线程上发送http请求,因为主线程是UI控制线程
manifests配置权限
<manifest> <uses-permission android:name="android.permission.INTERNET" /> ... </manifest>
子线程代码
@Override public void onClick(View view) { new Thread() { public void run() { try { URL url = new URL("https://www.baidu.com"); HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection(); httpURLConnection.setRequestMethod("GET"); httpURLConnection.setDoInput(true); httpURLConnection.setDoOutput(false); httpURLConnection.setConnectTimeout(30000); httpURLConnection.setReadTimeout(30000); httpURLConnection.connect(); BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(httpURLConnection.getInputStream(), "utf-8")); String line; StringBuilder stringBuilder = new StringBuilder(); String response; while ((line = bufferedReader.readLine()) != null) { stringBuilder.append(line); } response = stringBuilder.toString(); bufferedReader.close(); httpURLConnection.disconnect(); } catch (Exception e) { e.printStackTrace(); } } }.start(); } ...