HttpResponse response = client.execute(httpGet)，httpresponse之后的代码没有运行

Question

我尝试从我的网站/http://localhost/android_connection/getHttpGet.php 获取数据，这些数据遵循本网站http://www.thaicreate.com/mobile/android-httpget-httppost.html 的代码。

“/http://localhost/android_connection/getHttpGet.php”的结果就在这行之后：

Server Date/Time : 2014-06-04 04:28:49

我正在为我的本地主机使用 Xampp。

在安卓编程中 >> HttpResponse response = client.execute(httpGet) 之后的代码不会通过捕获 log.e 来运行。 Log.e("error1.1","尝试前");和 Log.e("error1.2","Before HttpResponse");只出现在我的 LogCat 上。

我不知道如何解决，请帮助我，顺便说一下，我是通过 android 应用程序使用网络服务器编程的初学者。

public class MainActivity extends Activity {

    @SuppressLint("NewApi")
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        // Permission StrictMode


        if (android.os.Build.VERSION.SDK_INT > 9) {
            StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
            StrictMode.setThreadPolicy(policy);
        }

        final TextView result = (TextView) findViewById(R.id.result);
        final Button btnGet = (Button) findViewById(R.id.btnGet);

        btnGet.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                String url = "http://localhost/android_connection/getHttpGet.php";
                String resultServer  = getHttpGet(url);
                result.setText(resultServer);
            }
        });
    }

    public String getHttpGet(String url) {

        StringBuilder str = new StringBuilder();
        HttpClient client = new DefaultHttpClient();
        HttpGet httpGet = new HttpGet(url);
        Log.e("error1.1","Before try");
        try {
            Log.e("error1.2", "Before HttpResponse");
            HttpResponse response = client.execute(httpGet);
            Log.e("error1.3", "End of HttpResponse");
            StatusLine statusline = response.getStatusLine();
            int statusCode = statusline.getStatusCode();
            if (statusCode == 200) { // Status OK
                HttpEntity entity = response.getEntity();
                InputStream content = entity.getContent();
                BufferedReader reader = new BufferedReader(new InputStreamReader(content));
                String line;
                while ((line = reader.readLine()) != null) {
                    str.append(line);
                    Log.e("error2","line : " + line);
                }
            }


        } catch (ClientProtocolException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return str.toString();
    }
}

Answer 1

问题在于您的服务器 url，android 设备无法识别 localhost url，因为这是您机器的 url。我个人建议您通过您的机器 IP 访问您的 XAMP 服务器，但如果您正在使用模拟器并希望使用本地主机，只需将 url 更改为 10.0.2.2。参考developer guide