android - 无法从 URL 获取 html 代码

Question

请帮帮我。我正在尝试从 Android 中的 url 获取 html 代码，但代码有问题，我无法弄清楚。处理未超出此行，“HttpResponse response = httpclient.execute(httpget);”

我也尝试过其他方式，比如，

URLConnection connection = (new URL("https://google.com")).openConnection();
Scanner scanner = new Scanner(connection.getInputStream());<--Not executing

但我在这里也面临着同样的问题。

这是我的实际代码，

HttpClient httpclient = new DefaultHttpClient();
HttpGet httpget = new HttpGet("https://google.com"); 
HttpResponse response = httpclient.execute(httpget);<--This line is not executing
HttpEntity entity = response.getEntity();
InputStream is = entity.getContent(); 
BufferedReader reader = new BufferedReader(new InputStreamReader(is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) 
            sb.append(line + "\n");

String resString = sb.toString(); 

        is.close();

这是我的日志，

11-22 22:58:29.233 5830-5830/com.example.sdp.smeme I/art: Not late-enabling -Xcheck:jni (already on)
11-22 22:58:31.610 5830-5830/com.example.sdp.smeme W/System: ClassLoader referenced unknown path: /data/app/com.example.sdp.smeme-1/lib/arm64
11-22 22:58:31.693 5830-5830/com.example.sdp.smeme I/InstantRun: starting instant run server: is main process
11-22 22:58:32.203 5830-5830/com.example.sdp.smeme W/art: Before Android 4.1, method android.graphics.PorterDuffColorFilter android.support.graphics.drawable.VectorDrawableCompat.updateTintFilter(android.graphics.PorterDuffColorFilter, android.content.res.ColorStateList, android.graphics.PorterDuff$Mode) would have incorrectly overridden the package-private method in android.graphics.drawable.Drawable
11-22 22:58:33.084 5830-5830/com.example.sdp.smeme D/NetworkSecurityConfig: No Network Security Config specified, using platform default
11-22 22:58:33.284 5830-5830/com.example.sdp.smeme W/gralloc_ranchu: Gralloc pipe failed

                                                                      [ 11-
22 22:58:33.285  5830: 5830 D/         ]
                                                                      HostConnection::get() New Host Connection established 0x78ce5e5900, tid 5830


                                                                      [ 11-
22 22:58:33.545  5830: 5847 D/         ]
                                                                      HostConnection::get() New Host Connection established 0x78ce5e59c0, tid 5847
11-22 22:58:33.552 5830-5847/com.example.sdp.smeme I/OpenGLRenderer: Initialized EGL, version 1.4
11-22 22:58:33.553 5830-5847/com.example.sdp.smeme D/OpenGLRenderer: Swap behavior 1
11-22 22:58:33.553 5830-5847/com.example.sdp.smeme W/OpenGLRenderer: Failed to choose config with EGL_SWAP_BEHAVIOR_PRESERVED, retrying without...
11-22 22:58:33.558 5830-5847/com.example.sdp.smeme D/OpenGLRenderer: Swap behavior 0
11-22 22:58:33.858 5830-5830/com.example.sdp.smeme W/art: Before Android 4.1, method int android.support.v7.widget.ListViewCompat.lookForSelectablePosition(int, boolean) would have incorrectly overridden the package-private method in android.widget.ListView

Answer 1

如果你想建立'https'连接，你可以使用这个:

SchemeRegistry schemeRegistry = new SchemeRegistry();
schemeRegistry.register(new Scheme("https", 
            SSLSocketFactory.getSocketFactory(), 443));

HttpParams params = new BasicHttpParams();

SingleClientConnManager mgr = new SingleClientConnManager(params, schemeRegistry);

HttpClient client = new DefaultHttpClient(mgr, params);
HttpGet httpget = new HttpGet("https://google.com"); 

不要忘记在 list 文件中声明您的互联网权限:

<uses-permission android:name="android.permission.INTERNET" />

编辑

您必须在后台线程上运行代码