这是封装的请求方法

import net.sf.json.JSONObject;
import okhttp3.*;
import java.io.IOException;
import java.util.HashMap;
import java.util.Iterator;

class TestMethod {
    private static String baseUrl = "xxxxxxx.com";
    //post请求
    static JSONObject doPost(String url, String json) throws IOException {
        final MediaType JSON = MediaType.parse("application/json; charset=utf-8");
        OkHttpClient client = new OkHttpClient();
        RequestBody body = RequestBody.create(JSON, json);
        Request request = new Request.Builder()
                .url(baseUrl + url)
                .post(body)
                .build();
        try (Response response = client.newCall(request).execute()) {
            return JSONObject.fromObject(response.body().string());
        }
    }
    //get请求
    static JSONObject doGet(String url, HashMap<String, String> param) throws IOException {
        if (param != null) {
            Iterator<String> it = param.keySet().iterator();
            StringBuffer sb = null;
            while (it.hasNext()) {
                String key = it.next();
                String value = param.get(key);
                if (sb == null) {
                    sb = new StringBuffer();
                    sb.append("?");
                } else {
                    sb.append("&");
                }
                sb.append(key);
                sb.append("=");
                sb.append(value);
            }
            url += sb.toString();
        }
        OkHttpClient client = new OkHttpClient();
        Request request = new Request.Builder()
                .url(baseUrl + url)
                .get()
                .build();
        try (Response response = client.newCall(request).execute()) {
            return JSONObject.fromObject(response.body().string());
        }
    }
    //put请求
    static JSONObject doPut(String url, String json) throws IOException {
        final MediaType JSON = MediaType.parse("application/json; charset=utf-8");
        OkHttpClient client = new OkHttpClient();
        RequestBody body = RequestBody.create(JSON, json);
        Request request = new Request.Builder()
                .url(baseUrl + url)
                .put(body)
                .build();
        try (Response response = client.newCall(request).execute()) {
            return JSONObject.fromObject(response.body().string());
        }
    }
    //delete请求
    static JSONObject doDelete(String url, String json) throws IOException {
        final MediaType JSON = MediaType.parse("application/json; charset=utf-8");
        OkHttpClient client = new OkHttpClient();
        RequestBody body = RequestBody.create(JSON, json);
        Request request = new Request.Builder()
                .url(baseUrl + url)
                .delete(body)
                .build();
        try (Response response = client.newCall(request).execute()) {
            return JSONObject.fromObject(response.body().string());
        }
    }
}

这是操作退出接口

import net.sf.json.JSONObject;
import java.io.IOException;

public class LogoutTest {
    private static String logoutUrl = "/api/v1/logout";
    //成功退出
    public static JSONObject logoutSuccess() throws IOException {
        return TestMethod.doGet(logoutUrl, null);
    }
    //无cookie退出
    public static JSONObject logoutFail() throws IOException {
        return TestMethod.doGet(logoutUrl, null);
    }
}

所以想问下，cookie 或者 session 怎么处理好？