OKHTTP使用工具

原创已于 2022-05-09 19:27:12 修改 · 448 阅读

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于 2020-05-11 14:35:21 首次发布

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本文介绍了一个使用OkHttp库实现的网络请求工具类，该工具类提供了POST请求的方法，支持JSON请求体，并能处理响应，返回指定类型的对象。同时，文章包含了错误处理和日志记录，适用于Java项目的网络交互。

<dependency>
<groupId>com.squareup.okhttp3</groupId>
<artifactId>okhttp</artifactId>
<version>3.3.1</version>
</dependency>

package com.sitech.crmbcc.utile;

import com.alibaba.fastjson.JSONObject;
import lombok.extern.slf4j.Slf4j;
import okhttp3.*;
import org.springframework.http.HttpStatus;
import org.springframework.util.StringUtils;

import java.io.IOException;
import java.net.URL;
import java.util.concurrent.TimeUnit;

import static com.alibaba.fastjson.JSONObject.*;

/**
 * @oauth: qiangSW
 * @date: 2020/4/6 20:04
 * @description: com.sitech.crmbcc.utile
 * @doc:
 */
@Slf4j
public class HttpClientUtil<T> {

    /**
     * @param requestParam
     * @param requestUrl
     * @param clasz
     * @param <T>
     * @return 响应码 != 200 返回 null
     * @throws Exception
     */
    public static <T> T okHttpPost(String requestParam, String requestUrl, Headers headers, Class<T> clasz) throws Exception {
        if (StringUtils.isEmpty(requestUrl)) {
            return null;
        }
        RequestBody requestBody = RequestBody.create(MediaType.parse("application/json"), requestParam);
        OkHttpClient okHttpClient = new OkHttpClient();
        URL url = new URL(requestUrl);
        Request.Builder post = new Request.Builder().url(url)
                .post(requestBody);
        if (null != headers) {
            post.headers(headers);
        }
        Request request = post.build();
        Response execute = okHttpClient.newCall(request).execute();
        if (HttpStatus.OK.value() == execute.code()) {
             ResponseBody body = execute.body();
            String result = body.string();
            return JSONObject.parseObject(result, clasz);
        }
        return null;

    }

    /**
     *
     * @param requestParam
     * @param requestUrl
     * @param headers
     * @return Response
     * @throws Exception
     */
    public static Response okHttpPost(String requestParam, String requestUrl, Headers headers) throws Exception {
        if (StringUtils.isEmpty(requestUrl)) {
            log.error("{}请求url为空", requestParam);
            return null;
        }
        RequestBody requestBody = RequestBody.create(MediaType.parse("application/json"), requestParam);
        OkHttpClient okHttpClient = new OkHttpClient().newBuilder()
                .build();
        URL url = new URL(requestUrl);
        Request.Builder post = new Request.Builder().url(url)
                .post(requestBody);

        if (null != headers) {
            post.headers(headers);
        }
        Request request = post.build();
        return okHttpClient.newCall(request).execute();

    }
}