HTTP GET | POST | DELETE请求

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 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;
    }
}
}