如何将数据发布到服务器并获取响应？意向？

Question

我跟着this POST数据到服务器并获得响应

在这里，我通过意图传递数据我用在主要活动

Intent i = new Intent(this, Mydata.class); 
      i.putExtra("data", data); 
      startActivity(i); 

用于接收意向下面的意图我用这个

Intent i = getIntent(); 
     String data = i.getExtras().getString("data"); 

这里的数据不通过URL ..

这是我的代码：

import java.io.BufferedReader; 
import java.io.InputStreamReader; 
import java.io.OutputStreamWriter; 
import java.net.URL; 
import java.net.URLConnection; 
import android.app.Activity; 
import android.content.Intent; 
import android.os.Bundle; 
import android.widget.TextView; 

public class Sdata extends Activity { 

    TextView content; 
    String utext; 

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

     content = (TextView)findViewById(R.id.content); 

     try{ 

      GetData(); 
     } 
     catch(Exception ex) 
     { 
      content.setText(" url exeption! "); 
     } 

    } 

    public void GetData() 
    { 

     Intent i = getIntent(); 
     String data = i.getExtras().getString("data"); 

     String text = ""; 
     BufferedReader reader=null; 

     try 
     { 
      utext="http://google.com/api/?" + data; 
      URL url = new URL("utext"); 


      URLConnection conn = url.openConnection(); 
      conn.setDoOutput(true); 
      OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream()); 
      wr.write(data); 
      wr.flush(); 

      reader = new BufferedReader(new InputStreamReader(conn.getInputStream())); 
      StringBuilder sb = new StringBuilder(); 
      String line = null; 

      while((line = reader.readLine()) != null) 
      { 
       sb.append(line + "\n"); 
      } 
      text = sb.toString(); 
     } 
     catch(Exception ex) 
     { 

     } 
     finally 
     { 
      try 
      { 

       reader.close(); 
      } 
      catch(Exception ex) {} 
     } 

     content.setText(text); 
     ((TextView) findViewById(R.id.text5)).setText(utext); 

    } 

} 

在此之后，我需要从服务器获取样反应

"Username Login Success" 
"Username Logout Success" 
or "Invalid User" 

更新：

在这里，我没有使用任何JSON数据或JSONstring和我的数据是

String data = "userid" + "=" + userid; 
      data += "&" + "phone" + "=" + phone; 
      data += "&" + "device" + "=" + device; 
      data += "&" + "clock_time" + "=" + "00:00:00"; 
      data += "&" + "clock_date" + "=" + clock_date; 

任何人都可以暗示我......

Answer 1

你可以参考下面的东西，你也应该和服务器端一起工作。

 HttpClient httpclient = new DefaultHttpClient(); 
     String mUrl = "https://url"; 
     HttpPost httppost = new HttpPost(mUrl); 
     httppost.addHeader("Content-Type", "application/json"); 
     JSONObject object = new JSONObject(); 
     object.put("data", "data"); 
     object.put("data2", "data2"); 
     StringEntity se = new StringEntity(object.toString(),"UTF-8"); 
     httppost.setEntity(se); 
     HttpResponse response = httpclient.execute(httppost); 
     if (response != null) { 
      result = EntityUtils.toString(response.getEntity()); 
     } 

Answer 2

尝试使用jsoup，做这样的事情

Handler loginhandler; 
TextView yourTextView; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_login); 

    yourTextView = (TextView) findViewById(R.id.yourtextviewid); 

    //here you create a handler to which you will be sending messages from the thread 
    loginhandler = new Handler() { 
     @Override 
     public void handleMessage(Message msg) { 
      if (""+msg.obj == "Logged in"){ 
        //if the user logged in successfully then you take him to the next activity 
        Intent startIntent = new Intent(getApplicationContext(), YourNextActivity.class); 
        startActivity(startIntent); 
        finish(); 
      } 
      yourTextView.setText(""+msg.obj); 
     } 
    }; 

    //here you create an instance of the thread class you created further down and you start it 

    Thread loginThread = new Thread(new loginThread()); 
    loginThread.start(); 


} 

//your method that gets and posts data to internet that you will call from the thread 
public String getData(){ 


    Connection.Response loginForm = Jsoup.connect("Yourserver/login.php") 
      .method(Connection.Method.GET) 
      .execute(); 

    Connection.Response dataPage = Jsoup.connect("yourserver/login.php") 
      .data("_username", "Users login") 
      .data("_password", "users password") 
      .cookies(loginForm.cookies()) 
      .method(Connection.Method.POST) 
      .execute(); 

    Document ParsedDataPage = dataPage.parse(); 
    Element pageLoginStatus = ParsedDataPage.select("div.login-status").get(0); 
    String dataToReturn = Jsoup.parse(""+pageLoginStatus).text(); 
    return dataToReturn; 
} 

//here you create your thread in a class that implements Runnable and you put inside the run() method what you want it to do 
private class loginThread implements Runnable { 

    @Override 
    public void run() { 
     try { 
      String myData = getData(); 

      //here you create a message and send it to your handler that you created above 
      Message message = Message.obtain(); 
      message.obj = myData; 
      loginhandler.sendMessage(message); 
     } 
     catch (Exception e){ 
      //Do something with the exception here 
     } 
    } 
} 

好吧，我基本上写你的整个代码，现在你只需要做一些修改。数据（），您发送到服务器取决于你想发送的数据，你应该看看网站的html代码，然后你所要做的就是把这些代码放到你的类中去实现Activity。您还必须下载Jsoup库并将其放入外部库文件夹中。

你应该看一篇关于线程如何工作的教程，因为如果你打算在Android上做互联网的东西，你将会使用它们很多。

Answer 3

您可以尝试使用单独的方法将日期发布到服务器，这里是示例代码...您可以参考它。

public String postData(String sURL,String sData) 
    { 
     try 
     { 
      String data = URLEncoder.encode("jsonString", "UTF-8")+ "=" + URLEncoder.encode(sData, "UTF-8"); 
      URL url = new URL(sURL); 
      URLConnection conn = url.openConnection(); 
      conn.setDoOutput(true); 
      OutputStreamWriter wr = new OutputStreamWriter(conn.getOutputStream()); 
      wr.write(data); 
      wr.flush(); 

      BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream())); 
      StringBuilder sb = new StringBuilder(); 
      String line = null; 

      while((line = reader.readLine()) != null) 
       { 
         sb.append(line + "\n"); 
       } 
      System.out.println("POST Respon "+sb.toString()); 
      return sb.toString(); 

     }catch(Exception e) 
     { 

     } 
     return ""; 
    }