如何在android中使用Get方法調用Web服務

Question

在我的程序中，我使用postmethod來調用Web服務。但Web服務基於Get方法。我不知道如何編寫Get方法的代碼。請告訴我如何編寫Get方法的代碼來調用Web服務。我的代碼如下所示基於post方法。

RestClient arc = new RestClient（「http：..............」）; arc.AddParam（「search」，msft）;

在這裏，我通過調用AddParam method.The RESTClient實現類創建的對象RESTClient實現並添加參數是

公共類AddSubRestClient {

private ArrayList <NameValuePair> params; 
private ArrayList <NameValuePair> headers; 
private InputStream instream; 
private String url; 

private int responseCode; 
private String message; 

private String response; 

public String getResponse() { 
    return response; 
} 
public InputStream inResponse() { 
    return instream; 
} 
public String getErrorMessage() { 
    return message; 
} 

public int getResponseCode() { 
    return responseCode; 
} 

public AddSubRestClient(String url) 
{ 
    this.url = url; 
    params = new ArrayList<NameValuePair>(); 
    headers = new ArrayList<NameValuePair>(); 
} 

public void AddParam(String name, String value) 
{ 
    params.add(new BasicNameValuePair(name, value)); 
} 

public void AddHeader(String name, String value) 
{ 
    headers.add(new BasicNameValuePair(name, value)); 
} 

public void Execute() throws Exception 
{ 
    //Postmethod 
    HttpPost request = new HttpPost(url); 
    Log.e("in","rest client"); 
    //add headers 
    for(NameValuePair h : headers) 
    { 
     request.addHeader(h.getName(), h.getValue()); 
    } 

    if(!params.isEmpty()){ 
     UrlEncodedFormEntity p_entity = new UrlEncodedFormEntity(params,HTTP.UTF_8); 
     request.setEntity(p_entity); 
     Log.e("params",params.toString()); 
     Log.e("request",request.toString()); 
    } 
     executeRequest(request, url); 

    } 


public void executeRequest(HttpUriRequest request, String url) 
{ 
    HttpClient client = new DefaultHttpClient(); 
    HttpResponse httpResponse; 

    try { 
     httpResponse = client.execute(request); 
     responseCode = httpResponse.getStatusLine().getStatusCode(); 
     message = httpResponse.getStatusLine().getReasonPhrase(); 
     HttpEntity entity = httpResponse.getEntity(); 
     if (entity != null) { 
     intream = entity.getContent(); 
     response = convertStreamToString(instream); 
    /Closing the input stream will trigger connection release 
      instream.close(); 
     } 

    } catch (ClientProtocolException e) { 
     client.getConnectionManager().shutdown(); 
     e.printStackTrace(); 
    } catch (IOException e) { 
     client.getConnectionManager().shutdown(); 
     e.printStackTrace(); 
    } 
} 

private static String convertStreamToString(InputStream is) { 

    BufferedReader reader = new BufferedReader(new InputStreamReader(is)); 
    StringBuilder sb = new StringBuilder(); 

    String line = null; 
    try { 
     Log.e("in","try block"); 
     line = reader.readLine(); 
     Log.e("line",line); 
     if(line==null) 
     { 
      Log.e("Line","is null"); 
     } 
     else{ 
      Log.e("Line","is not null"); 
      sb.append(line); 

     } 
     } catch (IOException e) { 
     e.printStackTrace(); 
    } finally { 
     try { 
      Log.e("line","close"); 
      is.close(); 
     } catch (IOException e) { 
      e.printStackTrace(); 
     } 
    } 
    return sb.toString(); 
} 

}

所以請告訴我怎麼寫代替get方法代替post方法或告訴我解決方案

提前謝謝

Answer 1

這項工作？我最近還沒有測試過這個功能，但對於我剛纔回來的一個學校項目來說，它是完美的。它將返回一個JSONObject，但顯然可以修改它以滿足您的需求。另請注意，該參數是您調用GET的URL的字符串。

public static JSONObject connectSingle(String url) 
     { 
      HttpClient httpclient = new DefaultHttpClient(); 

      // Prepare a request object 
      HttpGet httpget = new HttpGet(url); 

      // Execute the request 
      HttpResponse response; 
      try { 
       response = httpclient.execute(httpget); 

       // Get hold of the response entity 
       HttpEntity entity = response.getEntity(); 
       // If the response does not enclose an entity, there is no need 
       // to worry about connection release 

       if (entity != null) 
       { 

        // A Simple JSON Response Read 
        InputStream instream = entity.getContent(); 
        String result= convertStreamToString(instream); 
        instream.close(); 

        // A Simple JSONObject Creation 
        JSONObject obj = new JSONObject(result); 
        return obj; 
       } 
       else 
        return null; 

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