HTTPCLIENT POST JSONOBJECT

import java.io.IOException;
import java.nio.charset.Charset;
import org.apache.http.HttpEntity;
import org.apache.http.HttpStatus;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.alibaba.fastjson.JSONObject;

public class HttpUtil{

private static final Logger logger = LoggerFactory.getLogger(HttpUtil.class);
private final static HttpClientBuilder CLIENT_BUILDER = HttpClientBuilder.create();

/**
	 * httpClient请求处理数据
	 * @param url  发送地址
	 * @param data  Json格式数据
	 * @param contentType 协议内容
	 * @return
	 */
	public static String clientPostData(String url,JSONObject jsonObj) {
		CloseableHttpClient client = CLIENT_BUILDER.build();
		
		//设置超时时间
		//client.getParams().setParameter(CoreConnectionPNames.CONNECTION_TIMEOUT, 2000);
		//client.getParams().setParameter(CoreConnectionPNames.SO_TIMEOUT, 2000);
		
		HttpPost post = new HttpPost(url);
		post.setHeader("Content-type", "application/json; charset=utf-8");
		post.setHeader("Connection", "Close");
		
		//构建消息实体,发送Json格式的数据请求
		StringEntity entity = new StringEntity(jsonObj.toString(),Charset.forName("UTF-8"));
		entity.setContentEncoding("UTF-8");
        entity.setContentType("application/json");
        
        post.setEntity(entity);
        
        CloseableHttpResponse response = null;
		try {
			response = client.execute(post);
			
			//校验返回码
			int statusCode = response.getStatusLine().getStatusCode();
			if(statusCode != HttpStatus.SC_OK){
				logger.info("请求出错: " + statusCode);
				return null;
			} else {
				return response.toString();
			}
		} catch (ClientProtocolException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			if (null != post) {
				try {
					post.releaseConnection();
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		}
		return null;
	}
}