okHttp3集成

1. Maven依赖pom：

<dependency>
   <groupId>com.squareup.okhttp3</groupId>
   <artifactId>okhttp</artifactId>
   <version>4.9.0</version>
</dependency>

2. 代码：

package com.c2f.hbos.agent.plugin.charge.common.utils;

import lombok.Getter;
import lombok.NonNull;
import okhttp3.*;

import java.io.IOException;
import java.nio.charset.StandardCharsets;
import java.util.concurrent.TimeUnit;

/**
 * @description: OkHttp工具类
 * @author: Yang JianXiong
 * @since: 2022/10/25
 */
public interface OkHttpUtil {

    /**
     * JSON POST
     *
     * @param url
     * @param json
     * @return
     */
    static String jsonPost(@NonNull String url, @NonNull String json) {
        RequestBody requestBody = RequestBody.create(json.getBytes(StandardCharsets.UTF_8), MediaType.parse("application/json;charset=utf-8"));
        Request request = new Request.Builder().url(url).post(requestBody).build();

        try {
            Response response = OkHttpClient.CLIENT.getInstance().newCall(request).execute();
            if (response.isSuccessful()) {
                //字节流
                //return response.body().byteStream();

                //字符串
                return response.body().toString();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        return null;
    }

}

@Getter
enum OkHttpClient {

    /**
     * 客户端实例
     */
    CLIENT(new okhttp3.OkHttpClient.Builder()
            .retryOnConnectionFailure(false)
            .connectionPool(new ConnectionPool(200, 47, TimeUnit.MINUTES))
            .connectTimeout(60, TimeUnit.SECONDS)
            .readTimeout(60, TimeUnit.SECONDS)
            .writeTimeout(60, TimeUnit.SECONDS)
            .build());

    private final okhttp3.OkHttpClient instance;

    OkHttpClient(okhttp3.OkHttpClient instance) {
        this.instance = instance;
    }

}