HTTP GET | POST | DELETE请求

依赖：

<dependency>
  <groupId>com.squareup.okhttp3</groupId>
  <artifactId>okhttp</artifactId>
  <version>3.10.0</version>
</dependency>

Example：

public class MQHttpClient {

/** * GET | POST | DELETE * * @param paramsMap if null and the request is Get，otherwise dependent on requestMethodEnum * @param paramsMap if the request is post，and you can put the params in the map otherwise to null * @param cookie if you need cookie to veriy，you can use it， otherwise to null * @return responseJsonString */

public static String sendRequestURL(String url, HashMap<String, Object> paramsMap, RequestMethodEnum requestMethodEnum, String cookie) {    MediaType JSON = MediaType.parse("application/json; charset=utf-8");    RequestBody body = RequestBody.create(JSON, com.alibaba.fastjson.JSON.toJSONString(paramsMap, true));    Request.Builder request = new Request.Builder();    Response response;    try {        OkHttpClient client = new OkHttpClient.Builder().build();        // GET        if (paramsMap == null) {            if (cookie != null) {                response = client.newCall(request.url(url).addHeader("cookie", cookie).get().build()).execute();            } else {                response = client.newCall(request.url(url).get().build()).execute();            }        } else { // POST || DELETE            if (requestMethodEnum.getValue().equals(RequestMethodEnum.POST.getValue())) {                if (cookie != null) {                    response = client.newCall((request.url(url).post(body)).addHeader("cookie", cookie).build()).execute();                } else {                    response = client.newCall((request.url(url).post(body)).build()).execute();                }            } else {                if (cookie != null) {                    response = client.newCall((request.url(url).post(body)).addHeader("cookie", cookie).build()).execute();                } else {                    response = client.newCall((request.url(url).post(body)).build()).execute();                }            }        }        String responseBody = response.body().string();        return responseBody;    } catch (Exception e) {        e.printStackTrace();        return null;    }}}