okhttp post form表單

        OkHttpClient okHttpClient = new OkHttpClient.Builder().build();
        FormBody formBody = new FormBody.Builder()
                .add("method","applyLimiteUpdate")
                .build();
                
        Request request = new Request.Builder()
                .url("http://1.1.1.1/main.htm")
                .post(formBody)
                .build();
        
        Response response = okHttpClient.newCall(request).execute();
        System.out.println(response.toString());