这工具类是半个月前在网上找的放上来以后可能会用得上，忘了原文链接了，总之感谢大佬

源码

package com.test.cn.entity;import okhttp3.*;
import org.apache.commons.lang3.exception.ExceptionUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;import java.util.Iterator;
import java.util.Map;/*** 每一次都是创建一个新的OkHttpClient** @author YZH*/
@SuppressWarnings("All")
public class OkHttpUtil {private static final Logger logger = LoggerFactory.getLogger(OkHttpUtil.class);/*** get** @param url     请求的url* @param queries 请求的参数，在浏览器？后面的数据，没有可以传null* @return 结果*/public static String get(String url, Map<String, String> queries) {String responseBody = "";StringBuffer sb = new StringBuffer(url);if (queries != null && queries.keySet().size() > 0) {boolean firstFlag = true;Iterator iterator = queries.entrySet().iterator();while (iterator.hasNext()) {Map.Entry entry = (Map.Entry<String, String>) iterator.next();if (firstFlag) {sb.append("?" + entry.getKey() + "=" + entry.getValue());firstFlag = false;} else {sb.append("&" + entry.getKey() + "=" + entry.getValue());}}}Request request = new Request.Builder().url(sb.toString()).build();Response response = null;try {OkHttpClient okHttpClient = new OkHttpClient();response = okHttpClient.newCall(request).execute();int status = response.code();if (response.isSuccessful()) {return response.body().string();}} catch (Exception e) {logger.error("okhttp3 put error >> ex = {}", ExceptionUtils.getStackTrace(e));} finally {if (response != null) {response.close();}}return responseBody;}/*** post** @param url    请求的url* @param params post form 提交的参数* @return*/public static String post(String url, Map<String, String> params) {String responseBody = "";FormBody.Builder builder = new FormBody.Builder();//添加参数if (params != null && params.keySet().size() > 0) {for (String key : params.keySet()) {builder.add(key, params.get(key));}}Request request = new Request.Builder().url(url).post(builder.build()).build();Response response = null;try {OkHttpClient okHttpClient = new OkHttpClient();response = okHttpClient.newCall(request).execute();int status = response.code();if (response.isSuccessful()) {return response.body().string();}} catch (Exception e) {logger.error("okhttp3 post error >> ex = {}", ExceptionUtils.getStackTrace(e));} finally {if (response != null) {response.close();}}return responseBody;}/*** get** @param url     请求的url* @param queries 请求的参数，在浏览器？后面的数据，没有可以传null* @return*/public static String getForHeader(String url, Map<String, String> queries) {String responseBody = "";StringBuffer sb = new StringBuffer(url);if (queries != null && queries.keySet().size() > 0) {boolean firstFlag = true;Iterator iterator = queries.entrySet().iterator();while (iterator.hasNext()) {Map.Entry entry = (Map.Entry<String, String>) iterator.next();if (firstFlag) {sb.append("?" + entry.getKey() + "=" + entry.getValue());firstFlag = false;} else {sb.append("&" + entry.getKey() + "=" + entry.getValue());}}}Request request = new Request.Builder().addHeader("key", "cellValue").url(sb.toString()).build();Response response = null;try {OkHttpClient okHttpClient = new OkHttpClient();response = okHttpClient.newCall(request).execute();int status = response.code();if (response.isSuccessful()) {return response.body().string();}} catch (Exception e) {logger.error("okhttp3 put error >> ex = {}", ExceptionUtils.getStackTrace(e));} finally {if (response != null) {response.close();}}return responseBody;}/*** Post请求发送JSON数据....{"name":"zhangsan","pwd":"123456"}* 参数一：请求Url* 参数二：请求的JSON* 参数三：请求回调*/public static String postJsonParams(String url, String jsonParams) {String responseBody = "";RequestBody requestBody = RequestBody.create(MediaType.parse("application/json; charset=utf-8"), jsonParams);Request request = new Request.Builder().url(url).post(requestBody).build();Response response = null;try {OkHttpClient okHttpClient = new OkHttpClient();response = okHttpClient.newCall(request).execute();int status = response.code();if (response.isSuccessful()) {return response.body().string();}} catch (Exception e) {logger.error("okhttp3 post error >> ex = {}", ExceptionUtils.getStackTrace(e));} finally {if (response != null) {response.close();}}return responseBody;}/*** Post请求发送xml数据....* 参数一：请求Url* 参数二：请求的xmlString* 参数三：请求回调*/public static String postXmlParams(String url, String xml) {String responseBody = "";RequestBody requestBody = RequestBody.create(MediaType.parse("application/xml; charset=utf-8"), xml);Request request = new Request.Builder().url(url).post(requestBody).build();Response response = null;try {OkHttpClient okHttpClient = new OkHttpClient();response = okHttpClient.newCall(request).execute();int status = response.code();if (response.isSuccessful()) {return response.body().string();}} catch (Exception e) {logger.error("okhttp3 post error >> ex = {}", ExceptionUtils.getStackTrace(e));} finally {if (response != null) {response.close();}}return responseBody;}
}

maven依赖

  <dependency><groupId>org.apache.commons</groupId><artifactId>commons-lang3</artifactId><!--spring boot 自带版本--><version>3.7</version></dependency><dependency><groupId>com.squareup.okhttp3</groupId><artifactId>okhttp</artifactId><version>3.10.0</version></dependency>

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源码

maven依赖

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