Http Post Request android在不同的线程中

Question

我是 android 新手，我正在尝试发出 http post 请求，但我收到以下错误，我已经发布了我的代码和我的 LogCat 的一些行。我是否应该在不同的课程中执行此操作，如果是，如何执行，或者这只是我必须在当前代码中修复的问题。

public class PasteCode extends Activity {

@Override

protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.pastecode);

    final EditText codeinput = (EditText) findViewById(R.id.editText1);

    Button send_btn = (Button) findViewById(R.id.button1);
    send_btn.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {

            final String code = codeinput.getText().toString();

            new Thread( new Runnable() {
                @Override
                public void run() {

                    HttpClient httpClient = new DefaultHttpClient();
                    HttpPost httpPost = new HttpPost("accounts.google.com");

                    ArrayList<NameValuePair> nameValuePair = new ArrayList<NameValuePair>(5);
                    nameValuePair.add(new BasicNameValuePair("code", code));
                    nameValuePair.add(new BasicNameValuePair("client_id", "----------------------"));
                    nameValuePair.add(new BasicNameValuePair("client_secret", "-----------------"));
                    nameValuePair.add(new BasicNameValuePair("redirect_uri", "urn:ietf:wg:oauth:2.0:oob"));
                    nameValuePair.add(new BasicNameValuePair("grant_type", "authorization_code"));

                    try {
                        httpPost.setEntity(new UrlEncodedFormEntity(nameValuePair));

                    } catch (UnsupportedEncodingException e) {
                        // writing error to Log
                        e.printStackTrace();
                    }

                    // Making HTTP Request
                    try {
                        HttpResponse response = httpClient.execute(httpPost);

                        // writing response to log
                        Log.d("Http Response:", response.toString());
                    } catch (ClientProtocolException e) {
                        // writing exception to log
                        e.printStackTrace();
                    } catch (IOException e) {
                        // writing exception to log
                        e.printStackTrace();

                    }

                }
            }).start();
        }
    });
}
}

日志视图

02-18 10:03:20.477: W/dalvikvm(3759): threadid=15: 线程未捕获而退出 异常（组=0x4001d760）

02-18 10:03:20.487：E/AndroidRuntime(3759)：致命异常：Thread-31

02-18 10:03:20.487: E/AndroidRuntime(3759): java.lang.IllegalStateException: 目标 host 不能为空，也不能在参数中设置。 方案=空，主机=空， path=accounts.google.com

02-18 10:03:20.487: E/AndroidRuntime(3759): at java.lang.Thread.run(Thread.java:1020)

Answer 1

早上好，请您发布 logcat 错误...实际上 android 不允许您在应用程序的主线程中发出 http 请求...有一些方法可以实现您正在寻找的东西.. . 首先你可以将你的线程实现为 asyncTask...

StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
    StrictMode.setThreadPolicy(policy);

但不建议这样做...

编辑：

好的，我看到您的错误，没有数据库或没有任何东西可以处理您发送的数据...能否请您在服务器端发布您拥有的代码...并检查您发送数据的 url.. .这似乎无效...我将发布一个示例来向您展示如何使其工作..!!

ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(3);
        nameValuePairs.add(new BasicNameValuePair("data1", "data"));
        nameValuePairs.add(new BasicNameValuePair("data2", "dataa"));
        nameValuePairs.add(new BasicNameValuePair("data3", "dataaa"));
        try {
            res = CustomHttpClient.sendData("URL", nameValuePairs);
            String resp = res.toString();
            Log.e(Tag, res);
            resp = resp.replaceAll("\\s+","");

如您所见，我正在创建一个自定义 http 客户端的实例，该客户端负责调用服务器...并且还负责处理来自服务器的应答...

公共类 CustomHttpClient{

public static final int HTTP_TIMEOT = 30 * 1000;
private static HttpClient mHttpClient;

private static HttpClient getHttpClient() {
    if (mHttpClient == null) ;
    {
        mHttpClient = new DefaultHttpClient();
        final HttpParams param = mHttpClient.getParams();
        HttpConnectionParams.setConnectionTimeout(param, HTTP_TIMEOT);
        HttpConnectionParams.setSoTimeout(param, HTTP_TIMEOT);
        ConnManagerParams.setTimeout(param, HTTP_TIMEOT);
    }
    return mHttpClient;
}

public static String sendData(String url, ArrayList nameValuePairs) throws Exception {
    BufferedReader reader = null;
    try {
        HttpClient httpclient = getHttpClient();
        HttpPost httppost = new HttpPost(url);
        UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(nameValuePairs);
        httppost.setEntity(formEntity);

        HttpResponse response = httpclient.execute(httppost);
        reader = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));
        StringBuffer sBuffer = new StringBuffer("");
        String line = "";
        String NL = System.getProperty("line.separator");
        while ((line = reader.readLine()) != null) {
            sBuffer.append(line + NL);
        }
        reader.close();
        String result = sBuffer.toString();
        return result;
    } finally {
        if (reader != null) {
            try {
                reader.close();
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
}

}