OkHttp3Utils工具类

注意事项：
1、异常处理部分请大家根据项目结构自行调整
2、提供简单同步GET和POST方法
3、主要Maven依赖

	com.squareup.okhttp3
	okhttp
	3.14.7

import okhttp3.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.IOException;
import java.util.Objects;
import java.util.concurrent.TimeUnit;

/**
 * @Author Dylan
 * @Date 2020/3/20
 */
public class OkHttp3Utils {

	private static final Logger LOGGER = LoggerFactory.getLogger(OkHttp3Utils.class);

	public static final MediaType APPLICATION_JSON_CHARSET_UTF_8 = MediaType.get("application/json;charset=utf8");

	private static final OkHttpClient OK_HTTP_CLIENT = new OkHttpClient().newBuilder()
			.callTimeout(60, TimeUnit.SECONDS)    // 设置请求超时时间
			.connectTimeout(60, TimeUnit.SECONDS)    // 设置连接超时时间
			.readTimeout(60, TimeUnit.SECONDS)    // 设置socket读写超时时间
			.writeTimeout(60, TimeUnit.SECONDS)
			.build();

	public static String get(String url) {

		System.out.println("HTTP GET URL——" + url);

		Request getRequest = new Request.Builder().get().url(url).build();

		Call call = OK_HTTP_CLIENT.newCall(getRequest);

		try (Response getResponse = call.execute()) {
			return handle(getResponse);
		} catch (IOException e) {
			throw new AppException(HandleExceptionEnum.HTTP_ERROR, String.format("URL: {%s}", url), e);
		}
	}

	public static String post(String url, String body) {

		System.out.println("HTTP POST URL——" + url);

		RequestBody requestBody = RequestBody.create(APPLICATION_JSON_CHARSET_UTF_8, body);

		Request postRequest = new Request.Builder().post(requestBody).url(url).build();

		Call call = OK_HTTP_CLIENT.newCall(postRequest);

		try (Response postResponse = call.execute()) {
			return handle(postResponse);
		} catch (IOException e) {
			throw new AppException(HandleExceptionEnum.HTTP_ERROR, String.format("URL: {%s}", url), e);
		}
	}

	private static String handle(Response httpResponse) throws IOException {

		// 从响应模型中获取响应实体
		ResponseBody responseBody = httpResponse.body();

		if (httpResponse.isSuccessful()) {
			if (Objects.nonNull(responseBody)) {
				LOGGER.info("Success");
				LOGGER.error(String.format("Response Content Length: {%d}", responseBody.contentLength()));
				return responseBody.string();
			} else {
				throw new AppException(HandleExceptionEnum.HTTP_ERROR, "Response: {NULL}");
			}
		} else {
			LOGGER.error("Failure");
			if (Objects.nonNull(responseBody)) {
				LOGGER.error(String.format("Response Content Length: {%d}", responseBody.contentLength()));
				LOGGER.error(responseBody.string());
			}
			throw new AppException(HandleExceptionEnum.HTTP_ERROR, String.format("ResponseStatus: {%s}", httpResponse.code()));
		}
	}

	public static void main(String[] args) {
		String resp = OkHttp3Utils.get("http://192.168.8.15:8088/ws/v1/cluster/scheduler");
		LOGGER.info(resp);
	}
}