复制代码 代码如下:
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;
}
}