Question

我是Android编程的新手，我正在尝试开发一个调用此Web服务的应用程序，传递值并以xml的形式获得返回但每次发出请求时我都会获得返回作为数据条目无效。我尝试通过Http get And Post做，但两者都不是wrking。网址如下，

http://hiscentral.cuahsi.org/webservices/hiscentral.asmx?op=GetSeriesCatalogForBox2

，代码是，

HttpGet:

public class Main extends Activity implements OnClickListener   
{
 String xml=null;
 String responseBody;
 String text = null;
 @Override
public void onCreate(Bundle savedInstanceState) 
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    findViewById(R.id.my_button).setOnClickListener(this);
}

public void onClick(View arg0) 
{
    Button b = (Button)findViewById(R.id.my_button);
    b.setClickable(false);
    new LongRunningGetIO().execute();
}

private class LongRunningGetIO extends AsyncTask <Void, Void, String> 
{


    @Override
    protected String doInBackground(Void... params) 
    {

try 
         {
        HttpClient httpclient = new DefaultHttpClient();  
         HttpContext localContext = new BasicHttpContext();
         HttpGet httpGet = new     HttpGet("http://hiscentral.cuahsi.org/webservices/hiscentral.asmx/GetSeriesCatalogForBox2?xmin=-100 &xmax=-90 &ymin=40 &ymax=55 &conceptKeyword=precipitation &beginDate=1/1/2009&endDate=1/1/2010 HTTP/1.1");
         HttpResponse response = httpclient.execute(httpGet, localContext);
          HttpEntity entity = response.getEntity();
          text = getASCIIContentFromEntity(entity);
         } 

         catch (Exception e) 
         {
             return e.getLocalizedMessage();
         }
         return text;
    }   



     catch (ClientProtocolException e)
                     {
                         e.printStackTrace();
                     } 
                     catch (IOException e)
                     {
                         e.printStackTrace();
                     }

                 } 
             catch (UnsupportedEncodingException e)
             {
              e.printStackTrace();
              }
             return responseBody;
    }
      protected void onPostExecute(String results) 
                    {
                        if (results!=null) 
                        {
                            EditText et = (EditText)findViewById(R.id.my_edit);
                            et.setText(results);
                        }
                        Button b = (Button)findViewById(R.id.my_button);
                        b.setClickable(true);
                    }
                }
            }

和HttpPost是，

HttpPost
public class Main extends Activity implements OnClickListener   
{
String xml=null;
String responseBody;
String text = null;
@Override
public void onCreate(Bundle savedInstanceState) 
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
findViewById(R.id.my_button).setOnClickListener(this);
}

public void onClick(View arg0) 
{
Button b = (Button)findViewById(R.id.my_button);
b.setClickable(false);
new LongRunningGetIO().execute();
}

private class LongRunningGetIO extends AsyncTask <Void, Void, String> 
{


@Override
protected String doInBackground(Void... params) 
{
 HttpClient httpclient = new DefaultHttpClient();   
         String Url = "http://hiscentral.cuahsi.org/webservices/hiscentral.asmx?op=GetSeriesCatalogForBox2";
         if(!Url.endsWith("?"))
         {
                Url += "?";
         }
         HttpPost httppost = new HttpPost(Url); 
             // Add data   

             List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(5);   
             nameValuePairs.add(new BasicNameValuePair("xmin", "-100"));
             nameValuePairs.add(new BasicNameValuePair("xmax", "-90"));
             nameValuePairs.add(new BasicNameValuePair("ymin", "40"));
             nameValuePairs.add(new BasicNameValuePair("ymax", "55"));
             nameValuePairs.add(new BasicNameValuePair("networkIDs", ""));
             nameValuePairs.add(new BasicNameValuePair("conceptKeyword", "precipitation"));
             nameValuePairs.add(new BasicNameValuePair("beginDate", "1/1/2009"));
             nameValuePairs.add(new BasicNameValuePair("endDate", "1/1/2010"));
             try 
             {         
                      httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
                     //  Log.d("myapp", "works till here. 2"); 
                      HttpResponse response = httpclient.execute(httppost);
                      responseBody = EntityUtils.toString(response.getEntity());
                     //    Log.d("myapp", "response " + response.getEntity());
                     // HttpEntity entity = response.getEntity();
                      //   xml = getASCIIContentFromEntity(entity);
                     } 
                     catch (Exception e) 
                     {
                         return e.getLocalizedMessage();
                     }
             return responseBody;
    }

                     protected void onPostExecute(String results) 
                    {
                        if (results!=null) 
                        {
                            EditText et = (EditText)findViewById(R.id.my_edit);
                            et.setText(results);
                        }
                        Button b = (Button)findViewById(R.id.my_button);
                        b.setClickable(true);
                    }
                }
            }

请帮助!! Thanx in adnvance ..

Answer 1

您在HttpGet中缺少 networkIDs 参数，请尝试以下操作：

    http://hiscentral.cuahsi.org/webservices/hiscentral.asmx/GetSeriesCatalogForBox2?xmin=-100&xmax=-90&ymin=40&ymax=55&conceptKeyword=precipitation&
networkIDs=YOUR_NETWORK_IDS&beginDate=1/1/2009&endDate=1/1/2010

而不是

    http://hiscentral.cuahsi.org/webservices/hiscentral.asmx/GetSeriesCatalogForBox2?xmin=-100&xmax=-90&ymin=40&ymax=55&
conceptKeyword=precipitation&beginDate=1/1/2009&endDate=1/1/2010%20HTTP/1.1

并在 HttpPost 中将您的网址更改为：

String Url = "http://hiscentral.cuahsi.org/webservices/hiscentral.asmx/GetSeriesCatalogForBox2";

Http获取和发布请求

1 个答案: