OkHttp完美封装，用一行代码搞定外部请求，使用起来很方便

　　OKHttpUtil
　　在Java的世界中，Http客户端之前一直是Apache家的HttpClient占据主导，但是由于此包较为庞大，API又比较难用，因此并不使用很多场景。而新兴的OkHttp、Jodd-http固然好用，但是面对一些场景时，学习成本还是有一些的。
　　很多时候，我们想追求轻量级的Http客户端，并且追求简单易用。而OKHttp是一套处理 HTTP 网络请求的依赖库，由 Square 公司设计研发并开源，目前可以在 Java 和 Kotlin 中使用。
　　对于 Android App来说，OkHttp 现在几乎已经占据了所有的网络请求操作，对于服务器端请求外部接口也是必备的选择 。针对OKHttp，OkHttpUtil做了一层封装，使Http请求变得无比简单。 OKHttpUtil 功能根据URL自动判断是请求HTTP还是HTTPS，不需要单独写多余的代码。 默认情况下Cookie自动记录，比如可以实现模拟登录，即第一次访问登录URL后后续请求就是登录状态。 自动识别304跳转并二次请求 支持代理配置 支持referer配置 支持User-Agent配置 自动识别并解压Gzip格式返回内容 支持springboot 配置文件 极简的封装调用 OKHttpUtil使用
　　maven引入      io.github.admin4j     http     0.4.0 
　　最新版查询：
　　https://search.maven.org/artifact/io.github.admin4j/http GET
　　最简单的使用莫过于用HttpUtil工具类快速请求某个接口：Response response = HttpUtil.get(＂https://github.com/search＂, Pair.of(＂q＂, ＂okhttp＂)); System.out.println(＂response = ＂ + response); POST
　　一行代码即可搞定，当然Post请求也很简单：# JSON 格式的body Response post = HttpUtil.post(＂https://oapi.dingtalk.com/robot/send?access_token=27f5954ab60ea8b2e431ae9101b1289c138e85aa6eb6e3940c35ee13ff8b6335＂, ＂{＂msgtype＂: ＂text＂,＂text＂: {＂content＂:＂【反馈提醒】我就是我, 是不一样的烟火＂}}＂); System.out.println(＂post = ＂ + post);  # form 请求 Map formParams = new HashMap<>(16); formParams.put(＂username＂, ＂admin＂); formParams.put(＂password＂, ＂admin123＂); Response response = HttpUtil.postForm(＂http://192.168.1.13:9100/auth/login＂,                 formParams ); System.out.println(＂response = ＂ + response);
　　返回格式为JSON的 可以使用 HttpJsonUtil  自动返回JsonObjectJSONObject object=HttpJsonUtil.get(＂https://github.com/search＂, Pair.of(＂q＂,＂http＂), Pair.of(＂username＂,＂agonie201218＂)); System.out.println(＂object = ＂+object); 文件上传File file=new File(＂C:UsersandanyangDownloadsSql.txt＂); Map formParams=new HashMap<>(); formParams.put(＂key＂,＂test＂); formParams.put(＂file＂,file); formParams.put(＂token＂,＂WXyUseb-D4sCum-EvTIDYL-mEehwDtrSBg-Zca7t:qgOcR2gUoKmxt-VnsNb657Oatzo=:eyJzY29wZSI6InpoYW56aGkiLCJkZWFkbGluZSI6MTY2NTMwNzUxNH0=＂); Response response=HttpUtil.upload(＂https://upload.qiniup.com/＂,formParams); System.out.println(response); 下载文件HttpUtil.down(＂https://gitee.com/admin4j/common-http＂,＂path/＂); HttpRequest 链式请求# get Response response=HttpRequest.get(＂https://search.gitee.com/?skin=rec&type=repository＂) .queryMap(＂q＂,＂admin4j＂) .header(HttpHeaderKey.USER_AGENT,＂admin4j＂) .execute(); System.out.println(＂response = ＂+response);  # post form Response response=HttpRequest.get(＂http://192.168.1.13:9100/auth/login＂) .queryMap(＂q＂,＂admin4j＂) .header(HttpHeaderKey.USER_AGENT,＂admin4j＂) .form(＂username＂,＂admin＂) .form(＂password＂,＂admin123＂) .execute(); System.out.println(＂response = ＂+response);
　　post form 日志16:49:14.092[main]DEBUG io.github.admin4j.http.core.HttpLogger- -->GET http://192.168.1.13:9100/auth/login?q=admin4j http/1.1 16:49:14.094[main]DEBUG io.github.admin4j.http.core.HttpLogger-User-Agent:admin4j 16:49:14.094[main]DEBUG io.github.admin4j.http.core.HttpLogger-Host:192.168.1.13:9100 16:49:14.094[main]DEBUG io.github.admin4j.http.core.HttpLogger-Connection:Keep-Alive 16:49:14.094[main]DEBUG io.github.admin4j.http.core.HttpLogger-Accept-Encoding:gzip 16:49:14.094[main]DEBUG io.github.admin4j.http.core.HttpLogger- -->END GET 16:49:14.670[main]DEBUG io.github.admin4j.http.core.HttpLogger-<--200OK http://192.168.1.13:9100/auth/login?q=admin4j (575ms) 16:49:14.670[main]DEBUG io.github.admin4j.http.core.HttpLogger-transfer-encoding:chunked 16:49:14.670[main]DEBUG io.github.admin4j.http.core.HttpLogger-Vary:Origin 16:49:14.670[main]DEBUG io.github.admin4j.http.core.HttpLogger-Vary:Access-Control-Request-Method 16:49:14.670[main]DEBUG io.github.admin4j.http.core.HttpLogger-Vary:Access-Control-Request-Headers 16:49:14.670[main]DEBUG io.github.admin4j.http.core.HttpLogger-Vary:Origin 16:49:14.670[main]DEBUG io.github.admin4j.http.core.HttpLogger-Vary:Access-Control-Request-Method 16:49:14.670[main]DEBUG io.github.admin4j.http.core.HttpLogger-Vary:Access-Control-Request-Headers 16:49:14.671[main]DEBUG io.github.admin4j.http.core.HttpLogger-Content-Type:application/json;charset=utf-8 16:49:14.671[main]DEBUG io.github.admin4j.http.core.HttpLogger-Date:Tue,08Nov 2022 08:49:14GMT 16:49:14.671[main]DEBUG io.github.admin4j.http.core.HttpLogger- 16:49:14.671[main]DEBUG io.github.admin4j.http.core.HttpLogger-{＂code＂:406,＂msg＂:＂Full authentication is required to access this resource＂} 16:49:14.671[main]DEBUG io.github.admin4j.http.core.HttpLogger-<--END HTTP(76-byte body) response=Response{protocol=http/1.1,code=200,message=OK,url=http://192.168.1.13:9100/auth/login?q=admin4j} 在 Springboot 中使用
　　maven引入     io.github.admin4j     common-http-starter     0.4.0 
　　最新版查询 io.github.admin4j:common-http-starter
　　spring 版可以对 OkHttp进行个性化配置
　　配置详见public class HttpConfig {     /**      * 日志等级      */     private HttpLoggingInterceptor.Level loggLevel = HttpLoggingInterceptor.Level.BODY;      /**      * 读取超时时间，秒      */     private long readTimeout = 30;     /**      * 链接超时时间      */     private long connectTimeout = 30;      private boolean followRedirects = false;      /**      * 最大的连接数      */     private int maxIdleConnections = 5;      /**      * 最大的kepAlive 时间 秒      */     private long keepAliveDuration = 5;      private String userAgent = ＂OKHTTP＂;     /**      * 是否支持cookie      */     private boolean cookie = false;     private ProxyConfig proxy;       @Data     public static class ProxyConfig {          private Proxy.Type type = Proxy.Type.HTTP;         private String host;         private Integer port = 80;         private String userName;         private String password;     } } 如何快速封装外部接口
　　以实体项目为例，封装 ebay接口public class EbayClient extends ApiJsonClient {      /**      * 店铺配置      *      * @param storeId      */     public EbayClient(Long storeId) {          //TODO 获取店铺相关配置         Map config = new HashMap<>();          basePath = ＂https://api.ebay.com＂;         defaultHeaderMap.put(＂Authorization＂, ＂Bearer ＂ + config.get(＂accessToken＂));         defaultHeaderMap.put(＂X-EBAY-C-MARKETPLACE-ID＂, config.get(＂marketplaceId＂));     } }
　　EbayClient  封装ebay api请求 基础类/**  * ebay 库存相关api  * @author andanyang  */ public class EbayInventoryClient extends EbayClient {      /**      * 店铺配置      *      * @param storeId      */     public EbayInventoryClient(Long storeId) {         super(storeId);     }      /**      * 库存列表      *      * @param limit      * @param offset      * @return      * @throws IOException      */     public JSONObject inventoryItem(Integer limit, Integer offset) throws IOException {          Map queryMap = new HashMap(2);         queryMap.put(＂limit＂, limit);         queryMap.put(＂offset＂, offset);         return get(＂/sell/inventory/v1/inventory_item＂, queryMap);     } }
　　EbayInventoryClient  封装ebay 库存 api请求
　　使用EbayInventoryClient ebayInventoryClient=new EbayInventoryClient(1L); JSONObject jsonObject=ebayInventoryClient.inventoryItem(0,10); /**  * 订单相关api  * @author andanyang  */ public class EbayOrderClient extends EbayClient {       /**      * 店铺配置      *      * @param storeId      */     public EbayOrderClient(Long storeId) {         super(storeId);     }      /**      * 订单列表      *      * @param beginTime      * @param endTime      * @param limit      * @param offset      * @return      */     public JSONObject orders(String beginTime, String endTime, int limit, int offset) {          final String path = ＂/sell/fulfillment/v1/order＂;          String filter = MessageFormat.format(＂lastmodifieddate:[{0}..{1}]＂, beginTime, endTime);          //         Map queryMap = new HashMap<>(8);         queryMap.put(＂filter＂, filter);         queryMap.put(＂limit＂, limit);         queryMap.put(＂offset＂, offset);          return get(＂/sell/inventory/v1/inventory_item＂, queryMap);     } }
　　库存相关的使用EbayInventoryClient ，订单相关的使用EbayOrderClient ，是不是很清晰
　　源码位置：
　　https://github.com/admin4j/common-http 感谢阅读，希望对你有所帮助 :)
　　来源：andyoung.blog.csdn.net/article/details/127755025