maven依赖
<dependency><groupId>org.apache.httpcomponents</groupId><artifactId>httpclient</artifactId><version>4.5.6</version></dependency><!-- https://mvnrepository.com/artifact/com.alibaba/fastjson --><dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>1.2.47</version></dependency>
工具类
package com.yyjdemo.shardingjdbc.http;import com.alibaba.fastjson.JSONObject;import org.apache.http.HttpEntity;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.HttpGet;import org.apache.http.client.methods.HttpPost;import org.apache.http.client.utils.URIBuilder;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.params.HttpParams;import org.apache.http.protocol.HTTP;import org.apache.http.util.EntityUtils;import java.io.IOException;import java.util.ArrayList;import java.util.List;public class HttpUtils { ???public static void main(String[] args) throws IOException { ???????JSONObject jsonObject = new JSONObject(); ???????jsonObject.put("id","1");// ???????String httppost = httppost("http://127.0.0.1:8080/jdbc/testpost",jsonObject);// ???????System.out.println(httppost);// ???????String httppost = httppostjson("http://127.0.0.1:8080/jdbc/testpostjson",jsonObject); ???????String httppost = httpget("http://127.0.0.1:8080/jdbc/test",jsonObject); ???} ???public static String httpget(String url, JSONObject jsonObject) { ???????try { ???????????URIBuilder uriBuilder = new URIBuilder(url); ???????????if(!jsonObject.isEmpty()){ ???????????????jsonObject.forEach((k,v)->{ ???????????????????uriBuilder.addParameter(k,v.toString()); ???????????????}); ???????????} ???????????HttpGet httpget = new HttpGet(uriBuilder.toString()); ???????????try(CloseableHttpClient httpclient = HttpClients.createDefault(); ???????????????CloseableHttpResponse execute = httpclient.execute(httpget);){ ???????????????HttpEntity entity = execute.getEntity(); ???????????????String s = EntityUtils.toString(entity); ???????????????return s; ???????????} ???????}catch (Exception e){ ???????????e.printStackTrace(); ???????} ????return null; ???} ???public static String httppostjson(String url, JSONObject jsonObject) { ???????try { ???????????HttpPost httpPost = new HttpPost(url); ???????????httpPost.addHeader(HTTP.CONTENT_TYPE,"application/json"); ???????????StringEntity stringEntity = new StringEntity(jsonObject.toString(),"utf-8"); ???????????httpPost.setEntity(stringEntity); ???????????try(CloseableHttpClient httpclient = HttpClients.createDefault(); ???????????????CloseableHttpResponse execute = httpclient.execute(httpPost);){ ???????????????HttpEntity entity = execute.getEntity(); ???????????????String s = EntityUtils.toString(entity); ???????????????return s; ???????????} ???????}catch (Exception e){ ???????????e.printStackTrace(); ???????} ???????return null; ???} ???private static String httppost(String url,JSONObject jsonObject){ ???????try { ???????????HttpPost httpPost = new HttpPost(url); ???????????List<NameValuePair> objects = new ArrayList<>(); ???????????jsonObject.forEach((k,v)->{ ???????????????BasicNameValuePair basicNameValuePair = new BasicNameValuePair(k, v.toString()); ???????????????objects.add(basicNameValuePair); ???????????}); ???????????StringEntity stringEntity = new UrlEncodedFormEntity(objects,"utf-8"); ???????????httpPost.setEntity(stringEntity); ???????????try(CloseableHttpClient httpclient = HttpClients.createDefault(); ???????????????CloseableHttpResponse execute = httpclient.execute(httpPost);){ ???????????????HttpEntity entity = execute.getEntity(); ???????????????String s = EntityUtils.toString(entity); ???????????????return s; ???????} ???????}catch (Exception e){ ???????????e.printStackTrace(); ???????} ???????return null; ???}}
HTTPUTILS
原文地址：https://www.cnblogs.com/yeyongjian/p/10201888.html