来源：andyoung.blog.csdn.net/article/details/127755025
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。
<dependency> <groupId>io.github.admin4jgroupId> <artifactId>httpartifactId> <version>0.4.0version>dependency>
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);
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);
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JsonObject
JSONObject object=HttpJsonUtil.get("https://github.com/search",Pair.of("q","http"),Pair.of("username","agonie201218"));System.out.println("object = "+object);
File file=new File("C:\\Users\\andanyang\\Downloads\\Sql.txt");Map<String, Object> 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);
HttpUtil.down("https://gitee.com/admin4j/common-http","path/");
# getResponse 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 formResponse 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);
16:49:14.092[main]DEBUG io.github.admin4j.http.core.HttpLogger- -->GET http://192.168.1.13:9100/auth/login?q=admin4j http/1.116:49:14.094[main]DEBUG io.github.admin4j.http.core.HttpLogger-User-Agent:admin4j16:49:14.094[main]DEBUG io.github.admin4j.http.core.HttpLogger-Host:192.168.1.13:910016:49:14.094[main]DEBUG io.github.admin4j.http.core.HttpLogger-Connection:Keep-Alive16:49:14.094[main]DEBUG io.github.admin4j.http.core.HttpLogger-Accept-Encoding:gzip16:49:14.094[main]DEBUG io.github.admin4j.http.core.HttpLogger- -->END GET16:49:14.670[main]DEBUG io.github.admin4j.http.core.HttpLogger-16:49:14.670[main]DEBUG io.github.admin4j.http.core.HttpLogger-transfer-encoding:chunked16:49:14.670[main]DEBUG io.github.admin4j.http.core.HttpLogger-Vary:Origin16:49:14.670[main]DEBUG io.github.admin4j.http.core.HttpLogger-Vary:Access-Control-Request-Method16:49:14.670[main]DEBUG io.github.admin4j.http.core.HttpLogger-Vary:Access-Control-Request-Headers16:49:14.670[main]DEBUG io.github.admin4j.http.core.HttpLogger-Vary:Origin16:49:14.670[main]DEBUG io.github.admin4j.http.core.HttpLogger-Vary:Access-Control-Request-Method16:49:14.670[main]DEBUG io.github.admin4j.http.core.HttpLogger-Vary:Access-Control-Request-Headers16:49:14.671[main]DEBUG io.github.admin4j.http.core.HttpLogger-Content-Type:application/json;charset=utf-816:49:14.671[main]DEBUG io.github.admin4j.http.core.HttpLogger-Date:Tue,08Nov 2022 08:49:14GMT16:49:14.671[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-response=Response{protocol=http/1.1,code=200,message=OK,url=http://192.168.1.13:9100/auth/login?q=admin4j}
<dependency> <groupId>io.github.admin4jgroupId> <artifactId>common-http-starterartifactId> <version>0.4.0version>dependency>
spring 版可以对 OkHttp进行个性化配置
