okhttp请求使用教程，多个header请求头get、post发送，发送post http请求消息体为json格式，get请求
引入pom依赖发送okhttp的utill工具类请求头实体引入pom依赖
<dependency><groupId>com.squareup.okhttp3</groupId><artifactId>okhttp</artifactId><version>3.14.2</version></dependency>
发送okhttp的utill工具类
package com.shus.dataapi.application.event;import com.alibaba.fastjson.JSON;import com.google.gson.Gson;import com.google.gson.JsonObject;import com.shus.dataapi.api.vo.ManagerResultStatusEnum;import com.shus.dataapi.application.vo.RequestHeaderDO;import com.shus.dataapi.infrastructure.util.ServiceException;import lombok.extern.slf4j.Slf4j;import okhttp3.*;import mons.collections.CollectionUtils;import mons.lang3.exception.ExceptionUtils;import org.ponent;import java.util.List;import java.util.Map;import java.util.concurrent.TimeUnit;@Slf4j@Componentpublic class OkHttpUtil {//请求参数格式public static final MediaType jsonType = MediaType.parse("application/json; charset=utf-8");//请求配置public final OkHttpClient okHttpClient = new OkHttpClient.Builder().connectTimeout(8000, TimeUnit.MILLISECONDS) .readTimeout(8000, TimeUnit.MILLISECONDS).build();/*** 整理请求头信息* @param requestHeaderDOList 请求头* @return*/public static Headers SetHeaders(List<RequestHeaderDO> requestHeaderDOList) {Headers headers = null;okhttp3.Headers.Builder headersbuilder = new okhttp3.Headers.Builder();if (CollectionUtils.isNotEmpty(requestHeaderDOList)) {requestHeaderDOList.forEach(requestHeaderDO -> {headersbuilder.add(requestHeaderDO.getKey(), requestHeaderDO.getValue());});}headers = headersbuilder.build();return headers;}/*** 发送post请求通过JSON参数** @param reqUrl 请求url* @param param 请求参数* @param requestHeaderDOList 请求头*/public JsonObject sendPostByJsonAndHeader(String reqUrl, Object param, List<RequestHeaderDO> requestHeaderDOList) {JsonObject jsonObject = null;try {String paramStr = JSON.toJSONString(param);RequestBody requestBody = RequestBody.create(jsonType, paramStr);long startTime = System.currentTimeMillis();Headers headers = SetHeaders(requestHeaderDOList);Request.Builder builder = new Request.Builder().url(reqUrl).post(requestBody).headers(headers);String body = null;try (Response response = okHttpClient.newCall(builder.build()).execute()) {body = response.body().string();jsonObject = new Gson().fromJson(body, JsonObject.class);} catch (Exception e) {log.error("[OkHttpUtil]-[sendPostByJsonAndHeader]-[response:{},Exception:{}]", body, ExceptionUtils.getMessage(e));throw new ServiceException(ManagerResultStatusEnum.API_REQUEST_EXCEPTION.getStatus(), ManagerResultStatusEnum.API_REQUEST_EXCEPTION.getComment());} finally {long endTime = System.currentTimeMillis();log.info("OkHttpUtil:{} cost time:{}", reqUrl.substring(reqUrl.lastIndexOf("/") + 1),(endTime - startTime));}} catch (Exception e) {log.error("[sendPostByJsonAndHeader:OkHttpUtil2]-[error:{}]", e);}return jsonObject;}/*** 发送get请求多个请求头* @param url http请求地址* @param requestHeaderDOList http请求头* @return*/public JsonObject sendGetByHeader(String url, List<RequestHeaderDO> requestHeaderDOList) {// 设置HTTP请求参数JsonObject jsonObject = null;try {Headers setHeaders = SetHeaders(requestHeaderDOList);OkHttpClient okHttpClient = new OkHttpClient();Request request = new Request.Builder().url(url).headers(setHeaders).build();String body = null;try (Response response = okHttpClient.newCall(request).execute()) {body = response.body().string();jsonObject = new Gson().fromJson(body, JsonObject.class);} catch (Exception e) {log.error("[OkHttpUtil]-[sendGetByHeader]-[response:{},Exception:{}]", body, ExceptionUtils.getMessage(e));throw new ServiceException(ManagerResultStatusEnum.API_REQUEST_EXCEPTION.getStatus(), ManagerResultStatusEnum.API_REQUEST_EXCEPTION.getComment());}} catch (Exception e) {log.error("[sendGetByHeader:OkHttpUtil2]-[error:{}]", e);}return jsonObject;}/***发送get请求* @param url* @return*/public JsonObject sendGet(String url) {// 设置HTTP请求参数JsonObject jsonObject = null;try {OkHttpClient okHttpClient = new OkHttpClient();Request request = new Request.Builder().url(url).build();String body = null;try (Response response = okHttpClient.newCall(request).execute()) {body = response.body().string();jsonObject = new Gson().fromJson(body, JsonObject.class);} catch (Exception e) {log.error("[OkHttpUtil]-[sendGet]-[response:{},Exception:{}]", body, ExceptionUtils.getMessage(e));throw new ServiceException(ManagerResultStatusEnum.API_REQUEST_EXCEPTION.getStatus(), ManagerResultStatusEnum.API_REQUEST_EXCEPTION.getComment());}} catch (Exception e) {log.error("[sendGet:OkHttpUtil2]-[error:{}]", e);}return jsonObject;}/*** 发送post请求通过JSON参数** @param reqUrl 请求url* @param param 请求参数*/public JsonObject sendPostByJson(String reqUrl, Object param) {JsonObject jsonObject = null;try {String paramStr = JSON.toJSONString(param);RequestBody requestBody = RequestBody.create(jsonType, paramStr);long startTime = System.currentTimeMillis();Request.Builder builder = new Request.Builder().url(reqUrl).post(requestBody);String body = null;try (Response response = okHttpClient.newCall(builder.build()).execute()) {body = response.body().string();jsonObject = new Gson().fromJson(body, JsonObject.class);} catch (Exception e) {log.error("[OkHttpUtil]-[sendPostByJsonAndHeader]-[response:{},Exception:{}]", body, ExceptionUtils.getMessage(e));throw new ServiceException(ManagerResultStatusEnum.API_REQUEST_EXCEPTION.getStatus(), ManagerResultStatusEnum.API_REQUEST_EXCEPTION.getComment());} finally {long endTime = System.currentTimeMillis();log.info("OkHttpUtil:{} cost time:{}", reqUrl.substring(reqUrl.lastIndexOf("/") + 1),(endTime - startTime));}} catch (Exception e) {log.error("[sendPostByJsonAndHeader:OkHttpUtil2]-[error:{}]", e);}return jsonObject;}}
请求头实体
package com.shus.dataapi.application.vo;import lombok.Data;@Datapublic class RequestHeaderDO {private String key;private String value;}
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