Android,如何发送POST请求

Question

我无法通过Android应用向服务器发送帖子请求.我找到了一些关于如何发送POST的例子,但我的代码有一些错误,这里是代码:

public class MainActivity extends Activity 
{
private WebView wv; //Internet
private EditText email1; //Edit's
private EditText email2; //Edit's
private Button btn_get_access; //Get Access
private String post_url = "http://rasnacis.lv/vova.php";

@Override
public void onCreate(Bundle savedInstanceState)
{       
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    wv = (WebView) findViewById(R.id.webView1);
    email1 = (EditText) findViewById(R.id.txt_email_1);
    email2 = (EditText) findViewById(R.id.txt_email_2);
    btn_get_access = (Button) findViewById(R.id.btn_get_access);

    WebSettings webSettings = wv.getSettings();
    webSettings.setSaveFormData(true);

    //BUTTON
    OnClickListener ocl_btn_get_access = new OnClickListener()
    {

        public void onClick(View v) 
        {

            String givenEmail1 = email1.getEditableText().toString();
            String givenEmail2 = email2.getEditableText().toString();

            //SENDING POST
            if (givenEmail1.length() > 0 && givenEmail2.length() > 0)
            {
                HttpClient httpClient = new DefaultHttpClient();
                HttpPost httpPost = new HttpPost(post_url);

                try
                {
                    List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
                    nameValuePairs.add(new BasicNameValuePair("email1", "email2"));
                    nameValuePairs.add(new BasicNameValuePair("email1", "slgjlskjgsg"));
                    nameValuePairs.add(new BasicNameValuePair("email2", "xkjfhgkdjfhgkdjfg"));

                    httpPost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
                    httpClient.execute(httpPost);
                }
                catch (ClientProtocolException e) 
                {
                    System.out.println("First Exception caz of HttpResponese :" + e);
                    e.printStackTrace();
                }
                catch (IOException e) 
                {
                    System.out.println("Second Exception caz of HttpResponse :" + e);
                    e.printStackTrace();
                }
            }
            else
            {
                Toast.makeText(getBaseContext(), "All fields are required!", Toast.LENGTH_SHORT).show();
            }

            //sending GET
            //wv.loadUrl("http://rasnacis.lv/vova.php?email1=" + email1.getText() + "&email2=" + email2.getText());
        }
    };
    btn_get_access.setOnClickListener(ocl_btn_get_access);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.activity_main, menu);
    return true;
}

}

那么有人可以帮助我吗？我刚刚开始Android开发,不知道很多技巧或难点......

Answer 1

我使用这种技术使用post方法敲击服务器:

new Thread( new Runnable() {
    @Override
    public void run() {
       try {
          query = "name="+username+"&pass="+passwaord;

          URL url = new URL("https:www.example.com/login.php");
          HttpURLConnection connection = (HttpURLConnection)url.openConnection();
          connection.setRequestProperty("Cookie", cookie);
          //Set to POST
          connection.setDoOutput(true);
          connection.setRequestMethod("POST");
          connection.setReadTimeout(10000);
          Writer writer = new OutputStreamWriter(connection.getOutputStream());
          writer.write(query);
          writer.flush();
          writer.close();
       } catch (Exception e) {
           // TODO Auto-generated catch block
           Log.e(Tag, e.toString());
       }
    }
}).start();

我希望它会有所帮助.请确保,cookie是否需要为您的目的发布.如果没有那么你可以忽略connection.setRequestProperty("Cookie", cookie);线.

query可以创建BasicNameValuePair,但我使用的过程对我来说更容易.

确保您已在清单中为互联网设置了权限:

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