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;  } }