使用httpClient调用接口获取响应数据

转自:https://blog.csdn.net/shuaishuaidewo/article/details/81136088

import lombok.extern.slf4j.Slf4j;
import okhttp3.*;

/**
 * 需要注入依赖
 *  <dependency>
*         <groupId>com.squareup.okhttp3</groupId>
 *        <artifactId>okhttp</artifactId>
 *        <version>3.6.0</version>
 *  </dependency>
 */
@Slf4j
public class HttpClientUtils {

    public static final MediaType JSON = MediaType.parse("application/json;charset=utf-8");

    /**
     * get请求获取请求数据
     * @param url
     * @return
     */
    public static String httpGet(String url){
        String getData ;
        OkHttpClient httpClient = new OkHttpClient();
        Request request = new Request.Builder()
                .url(url)
                .build();
        try {
            Response response = httpClient.newCall(request).execute();
            getData = response.body().string();

        }catch (Exception e){
            log.info("【发送 GET 请求出现异常】！" + e.getMessage());
            return "-1";
        }
        return getData;
    }


    /**
     * post请求获取请求数据
     * @param url
     * @param json
     * json数据的生成方式（可选）；
     *      JSONObject json=new JSONObject();
     *      json.put("name","张三");
     *      json.put("sex","男");等
     *      json.toString()
     * @return
     */
    public static String httpPost(String url, String json){
        String postData ;
        OkHttpClient httpClient = new OkHttpClient();
        RequestBody requestBody = RequestBody.create(JSON, json);
        Request request = new Request.Builder()
                .url(url)
                .post(requestBody)
                .build();
        try {
            Response response = httpClient.newCall(request).execute();
            postData = response.body().string();
        }catch (Exception e){
            log.info("【发送 POST 请求出现异常】！" + e.getMessage());
            return "-1";
        }
        return postData;
    }

    public static void main(String[] args) {
        String loadJSON = httpGet("https://vhouyun.com/goods/RankGoodsList?day=yesterday&role=3");
        System.out.println(loadJSON);
        //post方式请求自己测试即可
    }

}