小白求助，很迷茫Android中写post请求，这个应该怎么写那

如图，他们提供的数据接口是这样说的，
于是我就这么写的，不对啊，该怎么写那

给你分享一个我的android访问http的类，超级好用，从来没让我担心过

 public class MyHttpClient {
    /** 
     * 通过HttpClient发送GET请求 
     * @param path 请求路径 
     * @param params 请求参数 
     * @param ecoding 请求编码 
     * @return 请求是否成功 
     */  
    public HttpResponse sendHttpClientGETRequest(String path,Map<String, String> params, String ecoding) throws Exception {  
        StringBuilder url=new StringBuilder(path);  
        url.append("?");  
        for (Map.Entry<String, String> entry : params.entrySet()) {  
            url.append(entry.getKey()).append("=");  
            url.append(URLEncoder.encode(entry.getValue(),ecoding));  
            url.append("&");  
        }  
        url.deleteCharAt(url.length()-1);  
        HttpGet httpGet=new HttpGet(url.toString());  
        DefaultHttpClient client=new DefaultHttpClient();  
        client.getParams().setParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, 10000);
        client.getParams().setParameter(CoreConnectionPNames.SO_TIMEOUT, 10000);
        HttpResponse response=client.execute(httpGet); 
        if(response.getStatusLine().getStatusCode()==200){  
            return response;  
        }  
        return null;  
    } 

        /** 
    * 通过HttpClient发送Post请求 
    * @param path 请求路径 
    * @param params 请求参数 
    * @param ecoding 请求编码 
    * @return 请求是否成功 
    */  
    public HttpResponse sendHttpClientPOSTRequest(String path,  
           Map<String, String> params, String ecoding) throws Exception {  
       List<NameValuePair> pair=new ArrayList<NameValuePair>();//存放请求参数  
       if(params!=null && !params.isEmpty()){  
           for (Map.Entry<String, String> entry : params.entrySet()) {  
               pair.add(new BasicNameValuePair(entry.getKey(),entry.getValue()));  
           }  
       }  
       UrlEncodedFormEntity enFormEntity=new UrlEncodedFormEntity(pair,ecoding);  
       HttpPost httpPost=new HttpPost(path);  
       httpPost.setEntity(enFormEntity);  
       DefaultHttpClient client=new DefaultHttpClient();  
       client.getParams().setParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, 10000);
       client.getParams().setParameter(CoreConnectionPNames.SO_TIMEOUT, 10000);
       HttpResponse response=client.execute(httpPost);  
       if(response.getStatusLine().getStatusCode()==200){  
           return response;  
       } 
       return null;  
    }

    /** 
    * 通过HttpClient发送Post请求 
    * @param path 请求路径 
    * @param params 请求参数 
    * @param ecoding 请求编码 
    * @return 请求是否成功 
    */  
    public HttpResponse sendHttpClientPOSTRequest(String path,  
           Map<String, String> params, String ecoding, int timeout) throws Exception {  
       List<NameValuePair> pair=new ArrayList<NameValuePair>();//存放请求参数  
       if(params!=null && !params.isEmpty()){  
           for (Map.Entry<String, String> entry : params.entrySet()) {  
               pair.add(new BasicNameValuePair(entry.getKey(),entry.getValue()));  
           }  
       }  
       UrlEncodedFormEntity enFormEntity=new UrlEncodedFormEntity(pair,ecoding);  
       HttpPost httpPost=new HttpPost(path);  
       httpPost.setEntity(enFormEntity);  
       DefaultHttpClient client=new DefaultHttpClient();  
       client.getParams().setParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, timeout);
       client.getParams().setParameter(CoreConnectionPNames.SO_TIMEOUT, timeout);
       HttpResponse response=client.execute(httpPost);  
       if(response.getStatusLine().getStatusCode()==200){  
           return response;  
       } 
       return null;  
    }
    }

你为什么不用DefaultHttpClient和HttpPost？

// 发送Post请求，获得响应查询结果
public static String queryStringForPost(String url) {
// 根据url获得HttpPost对象
HttpPost request = HttpUtil.getHttpPost(url);
String result = null;
try {
// 获得响应对象
HttpResponse response = HttpUtil.getHttpResponse(request);
// 判断是否请求成功
if (response.getStatusLine().getStatusCode() == 200) {
// 获得响应
result = EntityUtils.toString(response.getEntity());
return result;
}
} catch (ClientProtocolException e) {
e.printStackTrace();
result = "网络异常！";
return result;
} catch (IOException e) {
e.printStackTrace();
result = "网络异常！";
return result;
}
return null;
}