httpClient - post - json

package org.ssi.util;

 

import java.io.IOException;

import java.util.ArrayList;

import java.util.List;

 

import net.sf.json.JSONArray;

 

import org.apache.commons.lang.exception.ExceptionUtils;

import org.apache.commons.logging.Log;

import org.apache.commons.logging.LogFactory;

import org.apache.http.HttpResponse;

import org.apache.http.HttpStatus;

import org.apache.http.NameValuePair;

import org.apache.http.client.HttpClient;

import org.apache.http.client.entity.UrlEncodedFormEntity;

import org.apache.http.client.methods.HttpPost;

import org.apache.http.impl.client.DefaultHttpClient;

import org.apache.http.message.BasicNameValuePair;

import org.apache.http.protocol.HTTP;

import org.apache.http.util.EntityUtils;

 

 

public class APIHttpClient {

 

     //接口地址

     private String apiURL = "" ;

     private Log logger = LogFactory.getLog( this .getClass());

     private static final String pattern = "yyyy-MM-dd HH:mm:ss:SSS" ;

         private HttpClient httpClient = null ;

     private HttpPost method = null ;

     private long startTime = 0L;

     private long endTime = 0L;

     private int status = 0 ;

     /**

      * 接口地址

      * @param url

      */

     public APIHttpClient(String url){

 

         if (url != null )

         {

             this .apiURL = url;

         }

         if (apiURL != null )

         {

                     httpClient = new DefaultHttpClient();

                     method = new HttpPost(apiURL);

             

         }

     }

     

     /**

      * 调用 API

      * @param parameters

      * @return

      */

     public String post(String parameters)

     {

         String body = null ;

                 logger.info( "parameters:" + parameters);

                 

                 

         if (method != null & parameters != null  && ! "" .equals(parameters.trim()))

         {

                     JSONArray jsonObject = JSONArray.fromObject(parameters);

                     logger.info( "json:" + jsonObject.toString());

                     try {

 

                         List<NameValuePair> params= new ArrayList<NameValuePair>(); 

                         //建立一个NameValuePair数组，用于存储欲传送的参数 

                         params.add( new BasicNameValuePair( "data" ,parameters)); 

                         //添加参数 

                         method.setEntity( new UrlEncodedFormEntity(params,HTTP.UTF_8)); 

                         

                         startTime = System.currentTimeMillis();

                                 

                         //设置编码 

                         HttpResponse response=httpClient.execute(method); 

                         endTime = System.currentTimeMillis();

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

                         logger.info( "statusCode:" + statusCode);

                          logger.info( "调用API 花费时间(单位：毫秒)：" + (endTime - startTime));

                         if (statusCode != HttpStatus.SC_OK){

                             logger.error( "Method failed:" +response.getStatusLine());

                             status = 1 ;

                         }

                         

                             //Read the response body

                              body=EntityUtils.toString(response.getEntity());

                         

             } catch (IOException e){

                 //发生网络异常

                 logger.error( "exception occurred!\n" +ExceptionUtils.getFullStackTrace(e));

                 //网络错误

                 status = 3 ;

             }

                     finally {

                         logger.info( "调用接口状态：" + status);

                     }

                     

             

         }

         return body;

     }

 

     /**

      * 0.成功 1.执行方法失败 2.协议错误 3.网络错误

      * @return the status

      */

     public int getStatus() {

         return status;

     }

 

     /**

      * @param status the status to set

      */

     public void setStatus( int status) {

         this .status = status;

     }

     /**

      * @return the startTime

      */

     public long getStartTime() {

         return startTime;

     }

     /**

      * @return the endTime

      */

     public long getEndTime() {

         return endTime;

     }

}

 

http://www.oschina.net/code/snippet_242695_20850