基于HttpClient的Get/Post的http请求简单封装

依赖的jar包

commons-logging

httpcomponents-client

httpcomponents-core

import java.io.IOException;import java.util.ArrayList;import java.util.List;import java.util.Map;import org.apache.http.Consts;import org.apache.http.HttpEntity;import org.apache.http.NameValuePair;import org.apache.http.ParseException;import org.apache.http.client.entity.UrlEncodedFormEntity;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.impl.client.CloseableHttpClient;import org.apache.http.impl.client.HttpClients;import org.apache.http.message.BasicNameValuePair;import org.apache.http.util.EntityUtils;/** * @author 果果 * */public class HttpUtil {private static final CloseableHttpClient httpclient = HttpClients.createDefault();/** * 发送HttpGet请求 * @param url * @return */public static String sendGet(String url) {HttpGet httpget = new HttpGet(url);CloseableHttpResponse response = null;try {response = httpclient.execute(httpget);} catch (IOException e1) {e1.printStackTrace();}String result = null;try {HttpEntity entity = response.getEntity();if (entity != null) {result = EntityUtils.toString(entity);}} catch (ParseException | IOException e) {e.printStackTrace();} finally {try {response.close();} catch (IOException e) {e.printStackTrace();}}return result;}/** * 发送HttpPost请求，参数为map * @param url * @param map * @return */public static String sendPost(String url, Map<String, String> map) {List<NameValuePair> formparams = new ArrayList<NameValuePair>();for (Map.Entry<String, String> entry : map.entrySet()) {formparams.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));}UrlEncodedFormEntity entity = new UrlEncodedFormEntity(formparams, Consts.UTF_8);HttpPost httppost = new HttpPost(url);httppost.setEntity(entity);CloseableHttpResponse response = null;try {response = httpclient.execute(httppost);} catch (IOException e) {e.printStackTrace();}HttpEntity entity1 = response.getEntity();String result = null;try {result = EntityUtils.toString(entity1);} catch (ParseException | IOException e) {e.printStackTrace();}return result;}/** * 发送不带参数的HttpPost请求 * @param url * @return */public static String sendPost(String url) {HttpPost httppost = new HttpPost(url);CloseableHttpResponse response = null;try {response = httpclient.execute(httppost);} catch (IOException e) {e.printStackTrace();}HttpEntity entity = response.getEntity();String result = null;try {result = EntityUtils.toString(entity);} catch (ParseException | IOException e) {e.printStackTrace();}return result;}}