HttpClient4.3 post与get请求工具类完整示例

整个工具类代码如下所示，可直接使用！

import java.io.IOException;

import org.apache.http.HttpEntity;
import org.apache.http.HttpStatus;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
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.util.EntityUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.alibaba.fastjson.JSONObject;

/**

• HttpClient4.3工具类
• @author tech
• @date 2016-03-29

*/
public class HttpClientUtils {
private static Logger logger = LoggerFactory
.getLogger(HttpClientUtils.class); // 日志记录

/**
 * post请求传输json参数
 * 
 * @param url
 *            url地址
 * @param json
 *            参数
 * @return
 */
public static JSONObject httpPost(String url, JSONObject jsonParam) {
	// post请求返回结果
	CloseableHttpClient httpClient = HttpClients.createDefault();
	JSONObject jsonResult = null;
	HttpPost httpPost = new HttpPost(url);
	// 设置请求和传输超时时间
	RequestConfig requestConfig = RequestConfig.custom()
			.setSocketTimeout(2000).setConnectTimeout(2000).build();
	httpPost.setConfig(requestConfig);
	try {
		if (null != jsonParam) {
			// 解决中文乱码问题
			StringEntity entity = new StringEntity(jsonParam.toString(),
					"utf-8");
			entity.setContentEncoding("UTF-8");
			entity.setContentType("application/json");
			httpPost.setEntity(entity);
		}
		CloseableHttpResponse result = httpClient.execute(httpPost);
		//请求发送成功，并得到响应
		if (result.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
			String str = "";
			try {
				//读取服务器返回过来的json字符串数据 
				str = EntityUtils.toString(result.getEntity(), "utf-8");
				//把json字符串转换成json对象 
				jsonResult = JSONObject.parseObject(str);
			} catch (Exception e) {
				logger.error("post请求提交失败:" + url, e);
			}
		}
	} catch (IOException e) {
		logger.error("post请求提交失败:" + url, e);
	} finally {
		httpPost.releaseConnection();
	}
	return jsonResult;
}


/**
 * post请求传输String参数
 * 例如：name=Jack&sex=1&type=2
 * Content-type:application/x-www-form-urlencoded
 * @param url
 *            url地址
 * @param strParam
 *            参数
 * @param noNeedResponse
 *            不需要返回结果
 * @return
 */
public static JSONObject httpPost(String url, String strParam) {
	// post请求返回结果
	CloseableHttpClient httpClient = HttpClients.createDefault();
	JSONObject jsonResult = null;
	HttpPost httpPost = new HttpPost(url);
	// 设置请求和传输超时时间
	RequestConfig requestConfig = RequestConfig.custom()
			.setSocketTimeout(2000).setConnectTimeout(2000).build();
	httpPost.setConfig(requestConfig);
	try {
		if (null != strParam) {
			// 解决中文乱码问题
			StringEntity entity = new StringEntity(strParam,"utf-8");
			entity.setContentEncoding("UTF-8");
			entity.setContentType("application/x-www-form-urlencoded");
			httpPost.setEntity(entity);
		}
		CloseableHttpResponse result = httpClient.execute(httpPost);
		//请求发送成功，并得到响应
		if (result.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
			String str = "";
			try {
				//读取服务器返回过来的json字符串数据
				str = EntityUtils.toString(result.getEntity(), "utf-8");
				//把json字符串转换成json对象
				jsonResult = JSONObject.parseObject(str);
			} catch (Exception e) {
				logger.error("post请求提交失败:" + url, e);
			}
		}
	} catch (IOException e) {
		logger.error("post请求提交失败:" + url, e);
	} finally {
		httpPost.releaseConnection();
	}
	return jsonResult;
}

/**
 * 发送get请求
 * 
 * @param url
 *            路径
 * @return
 */
public static JSONObject httpGet(String url) {
	// get请求返回结果
	JSONObject jsonResult = null;
	CloseableHttpClient client = HttpClients.createDefault();
	// 发送get请求
	HttpGet request = new HttpGet(url);
	// 设置请求和传输超时时间
	RequestConfig requestConfig = RequestConfig.custom()
			.setSocketTimeout(2000).setConnectTimeout(2000).build();
	request.setConfig(requestConfig);
	try {
		CloseableHttpResponse response = client.execute(request);

		//请求发送成功，并得到响应
		if (response.getStatusLine().getStatusCode() == HttpStatus.SC_OK) {
			//读取服务器返回过来的json字符串数据
			HttpEntity entity = response.getEntity();
			String strResult = EntityUtils.toString(entity, "utf-8");
			//把json字符串转换成json对象
			jsonResult = JSONObject.parseObject(strResult);
		} else {
			logger.error("get请求提交失败:" + url);
		}
	} catch (IOException e) {
		logger.error("get请求提交失败:" + url, e);
	} finally {
		request.releaseConnection();
	}
	return jsonResult;
}

public static void main(String[] args) {
	//TODO 测试代码
}

}