一个极简的Http请求client推荐，一行搞玩外部请求

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。

• 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

maven引入

<dependency>
    <groupId>io.github.admin4jgroupId>
    <artifactId>httpartifactId>
    <version>0.5.0version>
dependency>

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<string, object> 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);
</string,>

返回格式为JSON的 可以使用 HttpJsonUtil 自动返回JsonObject

        Map<String, Object>  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:\\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);

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);

logging:
  level:
    io.github.admin4j.http.core: debug

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 2022 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 io.github.admin4j.http.core.httplogger-vary:origin io.github.admin4j.http.core.httplogger-vary:access-control-request-method 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" io.github.admin4j.http.core.httplogger-date:tue,08nov 08:49:14gmt io.github.admin4j.http.core.httplogger- io.github.admin4j.http.core.httplogger-{"code":406,"msg":"full authentication is required to access this resource"} 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}" < code></--200ok>

maven引入

<dependency>
    <groupId>io.github.admin4jgroupId>
    <artifactId>common-http-starterartifactId>
    <version>0.5.0version>
dependency>

spring 版可以对 OkHttp进行个性化配置
配置详见

public class HttpConfig {

    private HttpLoggingInterceptor.Level loggLevel = HttpLoggingInterceptor.Level.BODY;

    private long readTimeout = 30;

    private long connectTimeout = 30;

    private boolean followRedirects = false;

    private int maxIdleConnections = 5;

    private long keepAliveDuration = 5;

    private String userAgent = "OKHTTP";

    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;
    }
}

以实体项目为例，封装 ebay接口

public class EbayClient extends ApiJsonClient {

    public EbayClient(Long storeId) {

        Map<String, String> 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

public class EbayInventoryClient extends EbayClient {

    public EbayInventoryClient(Long storeId) {
        super(storeId);
    }

    public Map<String, Object> inventoryItem(Integer limit, Integer offset) throws IOException {

        Map<String, Object> 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);
        Map<String, Object> jsonObject=ebayInventoryClient.inventoryItem(0,10);

public class EbayOrderClient extends EbayClient {

    public EbayOrderClient(Long storeId) {
        super(storeId);
    }

    public Map<String, Object> 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<String, Object> 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

项目默认使用 fastjson 解析json，如果想用其他json框架.排除 admin4j-json-fastjson,重新导入其他包参考如下

<dependency>
    <groupid>io.github.admin4j</groupid>
    <artifactid>http</artifactid>
    <version>0.5.0</version>
    <exclusions>
        <exclusion>
            <groupid>com.admin4j.json</groupid>
            <artifactid>admin4j-json-fastjson</artifactid>
        </exclusion>
    </exclusions>
</dependency>
<dependency>
    <groupid>com.admin4j.json</groupid>
    <artifactid>admin4j-json-jackson</artifactid>
    <version>0.2.0</version>
</dependency>

Original: https://blog.csdn.net/agonie201218/article/details/127755025
Author: Young丶
Title: 一个极简的Http请求client推荐，一行搞玩外部请求