HttpClient post请求拼接数字

   private String url="http://japi.juhe.cn/comic/book";
   private String key="1e58b105e63d17c29181e6cea32b0279";

   private int num=10;

  new scall(url,key,num);

public static String scall(String url,String key,int skip){  

  StringBuffer result=new StringBuffer(); 

   HttpClient httpClient=new DefaultHttpClient(); 

   HttpPost httpPost=new HttpPost(url);  

  try {     

    List pairs=new ArrayList<>();  

      pairs.add(new BasicNameValuePair("key",key));  

      pairs.add(new BasicNameValuePair("skip",skip+""));  

      UrlEncodedFormEntity entity = new UrlEncodedFormEntity(pairs, "UTF-8");   

      httpPost.setEntity(entity);     

     HttpResponse response = httpClient.execute(httpPost);   

     int code = response.getStatusLine().getStatusCode();   

     String reson = response.getStatusLine().getReasonPhrase();   

     if(200==code){     

       HttpEntity entity1 = response.getEntity();    

        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(entity1.getContent()));

            String line=null;      

      while ((line=bufferedReader.readLine())!=null){  

              result.append(line);        

    }         

        return  result.toString();    

    }   

 } catch (Exception e) {   

     e.printStackTrace();  

  }   

    return null;

 }