java post请求

package com.jfbank.loan.intf.util;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import ms.platform.base.log.MSLog;

import org.apache.http.HttpStatus;
import org.apache.http.NameValuePair;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import org.apache.http.protocol.HTTP;

public class HttpClientUtil {

private static HttpClientUtil clientUtil ;

private static CloseableHttpClient httpClient = null;

static {
//
httpClient = HttpClients.createDefault();
//
clientUtil = new HttpClientUtil();
}

private int status = 0;

/**
* 私有化构造方法
*/
private HttpClientUtil() {

}

/**
* 获取当前对象，单例对象
* @return
*/
public static HttpClientUtil getInstance() {

return clientUtil;
}

/**
* POST提交
* @param strUrl 请求URL
* @param strJson 请求json字符串
* @return
*/
public String postJson(String strUrl,String strJson) {

String body = null;
if (strJson != null && !"".equals(strJson.trim())) {

try {
//实体
StringEntity entity = new StringEntity(strJson.toString(),"utf-8");
//post
HttpPost postMethod = new HttpPost(strUrl);
postMethod.setEntity(entity);

long startTime = System.currentTimeMillis();

//响应
CloseableHttpResponse response = httpClient.execute(postMethod);
long endTime = System.currentTimeMillis();
int statusCode = response.getStatusLine().getStatusCode();

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

if (statusCode != HttpStatus.SC_OK) {
MSLog.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
MSLog.error("exception occurred：",e);
// 网络错误
status = 3;
} finally {
MSLog.info("调用接口状态：" + status);
}
}

return body;
}

/**
* POST提交
* @param strUrl 请求URL
* @param strJson 请求json字符串
* @return
*/
public String postMap(String strUrl,Map<Object, Object> paraMap) {

String body = null;

if (paraMap != null && paraMap.size() > 0) {

try {

/** 设置请求参数 */
//实体
List<NameValuePair> nvps = new ArrayList<NameValuePair>();
//赋值
for (Object key : paraMap.keySet()) {
nvps.add(new BasicNameValuePair(key.toString(), (String)paraMap.get(key)));
}

//post
HttpPost postMethod = new HttpPost(strUrl);
postMethod.setEntity(new UrlEncodedFormEntity(nvps, "utf-8"));
//请求时间
long startTime = System.currentTimeMillis();
//响应
CloseableHttpResponse response = httpClient.execute(postMethod);
long endTime = System.currentTimeMillis();
int statusCode = response.getStatusLine().getStatusCode();

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

if (statusCode != HttpStatus.SC_OK) {
MSLog.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
MSLog.error("exception occurred：",e);
// 网络错误
status = 3;
} catch (Exception e) {
e.printStackTrace();
} finally {
MSLog.info("调用接口状态：" + status);
}
}

return body;
}

}