HttpClent请求

package com.util.pay;import java.io.IOException;import java.io.UnsupportedEncodingException;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import org.apache.commons.httpclient.HttpStatus;import org.apache.http.HttpEntity;import org.apache.http.NameValuePair;import org.apache.http.client.ClientProtocolException;import org.apache.http.client.config.RequestConfig;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.dom4j.DocumentException;import org.slf4j.Logger;import org.slf4j.LoggerFactory;/** * HTTP 请求客户端(目前支持POS请求) *  * @author Administrator * */public class HttpClientUtil {private static Loggerlogger= LoggerFactory.getLogger(HttpClientUtil.class);private final static StringUTF8= "UTF-8";private final static StringRTN_CODE= "code";private final static StringRTN_MSG= "msg";private final static StringRTN_RSLT= "data";private final static intTIMEOUT= 20000;/** * 发送请求 *  * @param url *            Request Url * @param headers *            Request Headers * @param reqParam *            Request Params * @param charSet *            字符集，默认UTF-8 * @param timeout *            超时时间 * @return */@SuppressWarnings("rawtypes")public static Map postSend(String url, Map<String, String> headers, Object reqParam, String charSet, int timeout) {HttpPost httpPost = getHttpPost(url, headers, reqParam, charSet, timeout);return sendPost(httpPost);}/** *  * @param url *            Request Url * @param headers *            Request Headers * @param reqParam *            Request Params * @return */@SuppressWarnings("rawtypes")public static Map postSend(String url, Map<String, String> headers, Object reqParam) {return postSend(url, headers, reqParam, UTF8, TIMEOUT);}/** * 发送请求 *  * @param httpPost * @return */@SuppressWarnings({ "rawtypes", "unchecked" })private static Map sendPost(HttpPost httpPost) {// 创建默认的httpClient实例CloseableHttpClient httpClient = HttpClients.createDefault();CloseableHttpResponse httpResponse = null;Map<String, Object> rtnMap = null;String str = "ERROR-REQ";try {httpResponse = httpClient.execute(httpPost);// 请求发送成功，并得到响应int statusCode = httpResponse.getStatusLine().getStatusCode();if (statusCode == HttpStatus.SC_OK) {str = EntityUtils.toString(httpResponse.getEntity());// 测试增加// JSONObject jsonObject = JSONObject.parseObject(str);// str = jsonObject.getString("data");// *********测试ENDString data = BankXmlUtils.parseXmlToJson(str);rtnMap = getRtnMap("200000", "Success", data);} else {rtnMap = getRtnMap("200001", "请求失败！", statusCode);}} catch (ClientProtocolException e1) {// e1.printStackTrace();logger.error("HttpClient Request ClientProtocolException!"+ e1.getMessage(), e1);rtnMap = getRtnMap("200444", "Send Exception", "Send ProtocolException"+ e1.getMessage());} catch (IOException e2) {e2.printStackTrace();logger.error("HttpClient Request IOException!"+ e2.getMessage(), e2);rtnMap = getRtnMap("200444", "Send Exception", "Send IOException"+ e2.getMessage());} catch (DocumentException e) {e.printStackTrace();logger.error("HttpClient Request IOException!" + e.getMessage(), e);rtnMap = getRtnMap("200444", "Send Exception", "Send IOException"+ e.getMessage());} finally {try {if (httpClient != null) {httpClient.close();}if (httpResponse != null) {httpResponse.close();}} catch (IOException e) {e.printStackTrace();}}return rtnMap;}/** * 设置请求参数List<NameValuePair> nvps *  * @param url *            Request Url * @param headers *            Request Headers * @param reqParam *            Request Params * @param charSet *            字符集，默认UTF-8 * @param timeout *            超时时间 */@SuppressWarnings("unchecked")private static HttpPost getHttpPost(String url, Map<String, String> headers, Object obj, String charset, int timeout) {HttpPost httpost = new HttpPost(url);try {// 请求参数if (obj != null) {HttpEntity httpEntity = null;if (obj instanceof Map) {List<NameValuePair> nameValues = new ArrayList<NameValuePair>();Map<String, String[]> params = (Map<String, String[]>) obj;for (Map.Entry<String, String[]> entry : params.entrySet()) {for (String value : entry.getValue()) {nameValues.add(new BasicNameValuePair(entry.getKey(), value));}}httpEntity = new UrlEncodedFormEntity(nameValues, charset);} else if (obj instanceof String) {String xmlStr = (String) obj;httpEntity = new StringEntity(xmlStr, charset);}httpost.setEntity(httpEntity);}// 请求头信息(待写)if (headers != null) {for (Map.Entry<String, String> entry : headers.entrySet()) {httpost.addHeader(entry.getKey(), entry.getValue());}}} catch (UnsupportedEncodingException e) {e.printStackTrace();}httpost.setConfig(setHttpTimeOut(timeout));return httpost;}/** * 设置默认请求和传输超时时间 *  * @param timeout *            默认20000 * @return */private static RequestConfig setHttpTimeOut(int timeout) {RequestConfig defaultRequestConfig = RequestConfig.custom().setSocketTimeout(timeout).setConnectTimeout(timeout).setConnectionRequestTimeout(timeout).setStaleConnectionCheckEnabled(true).build();return defaultRequestConfig;}/** * 获取返回的Map *  * @param rtnCode * @param rtnMsg * @return */@SuppressWarnings("rawtypes")private static Map getRtnMap(String rtnCode, String rtnMsg, Object rslt) {Map<String, Object> rtnMap = new HashMap<>();rtnMap.put(RTN_CODE, rtnCode);rtnMap.put(RTN_MSG, rtnMsg);rtnMap.put(RTN_RSLT, rslt);return rtnMap;}}