Our main focus in this post will be decoder function. The task is very simple. JSON is used to transmit data between a server and a browser. The typical way to send binary in JSON is to base64 encode it. Here's a simple project for you to try, showing a number of things: read in analog data (in this project we'll use a light level detector) connect to an MQTT broker in the cloud; publish data in the form of a JSON object to the MQTT broker; view the light-level data on an Assetwolf portal. Edit/Read array. aJson is a library to. JSON stands for 'JavaScript Object Notation' is a text-based format which facilitates data interchange between diverse applications. It shows your data side by side in a clear, editable treeview and in a code editor. ArduinoJson is a JSON library for Arduino, IoT, and any embedded C++ project. For example, an application written in ASP. The PHP program in this how-to guides reads a JSON file into a JSON string and uses json_decode() function to convert the JSON string into a PHP variable. Get JSON data. Main class for Arduino clients to interact with Firebase. The main idea is to read the radio signals within an interrupt routine or even a dedicated microcontroller and send the processed data to the main Arduino board by SPI or i2C. Learn the InfluxDB line protocol, how to monitor Arduino Uno, its hardware, obtain a sample code and querying data here! In this article, we’ll look at a basic use case involving data collection from a temperature sensor connected to an Arduino Uno, then sent to InfluxDB via the native UDP plugin. Weather Audio Notifier Wifi 101. And use those tv remote control code in the arduino sketch to run any application. It lets you exchange data among multiple languages like JSON. ESP8266: Posting JSON data to a Flask server on the cloud The objective of this post is to explain how to make a POST request containing JSON data to a cloud server, with the ESP8266. loads() method return Python data structure of JSON string or data. When receiving data from a web server, the data is always a string. Could anyone help me please, how to catch this data in a controller if I send it as JSON Stack Exchange Network Stack Exchange network consists of 175 Q&A communities including Stack Overflow , the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. decode('utf-8') # Decode using the utf-8 encoding print(new_str) This will give the output. The X, Y, and Z pins of the accelerometer outpu an analog voltage that varies with the acceleration on that axis. Connect to a JSON file. But it is just the Rest Response with String parameters. com, which you can see for yourself here. Json url-decoder tool What is a json url-decoder? This tool converts previously URL-escaped JavaScript Object Notation (JSON) data back to JSON that you can read. It's like JSON. Select "EX data stream" as data format on PPM-Out-Pin (Menu "Configuration/PPM con. This is how you can generate data for use with AJAX using a “POST” method which contains JSON data and then pass it to a PHP script and then decode ready to use as variables (name value pairs). You might consider using JSON if your application needs to store somewhat complex data. So what is PHP cURL in a nutshell? cURL (means client URL) is a PHP library that enable us to communicate and connect to many servers with different type of protocols. I am trying to parse a JSON array on a Pi server via wifi. parsing json data in arduino. sensor and HC-SRC4 ultrasonic sensor using the IBM IoT Foundation with Arduino Mega. Apple has some new classes and protocols we can use: JSONDecoder and Decodable for decoding from JSON data to a model object, and JSONEncoder and Encodable for encoding from a model object to JSON data. ArduinoJson supports serialization, deserialization, MessagePack, fixed allocation, zero-copy, streams, and more. Push Versus Poll. Decoding JSON data is as simple as encoding it. Unfortunately, I can't really get a result back from the test contract I created. And If ActionTwo is coming then according to that serial data we got. But this fails in the case when we want to receive JSON string as post data. The main idea is to read the radio signals within an interrupt routine or even a dedicated microcontroller and send the processed data to the main Arduino board by SPI or i2C. JSON is the best alternative to XML; JSON stores values in key/value pair format. Arduino JSON is an elegant and efficient JSON library for embedded systems. If ActionOne is coming then according to that serial data we got. What is JSON. Creating JSON/Encoding of JSON:-Encoding of JSON means we will create JSON object/stream and similar to wthat we read from input file while parsing. net encode this string to base64 but in order to save onto data base from BPM side I am having difficulti while decoding base 64 string. In addition, you can set values on objects via JSON and be able to represent Arrays, Objects, Dates, and more. JSON stands for ‘JavaScript Object Notation‘ is a text-based format which facilitates data interchange between diverse applications. Parse the data with JSON. The data is server generated. js file… the json file will includes data in format like { "name": "ram","address":"UK"} Vote Up 0 Vote Down Reply. How to Convert Response Body Into JSON. Go has built-in support for encoding and decoding JSON data. Decoding JSON data using PHP. JSON data structures are very similar to the PHP arrays. NOTE: I'm reading serial data using the software serial library. In the poll mechanism, as described in my previous article, the Google spreadsheet runs a script that sends a request to fetch data from our hardware at a regular interval. First, install JSON Perl module from CPAN:. In a previous post we presented the JSON format, which is well suited to export data structures to a text file, easily readable by a person. So you can calculate the pulse width as 39. And If ActionTwo is coming then according to that serial data we got. Sending Commands to an Arduino (or other IoT device) While much traffic in the internet of things, is device-to-cloud, sometimes it is important to send data from the cloud to an IoT device. This is a class which incorporates all 11 of the supported protocols. The web page can be modified to suit your own needs, plus it would be more useful if the Arduino was actually monitoring something, rather than logging data from floating pins. Hi, updating an existing json file would be cumbersome and the best you can do is to decode, append new data to it, encode and write into a new file. sensor and HC-SRC4 ultrasonic sensor using the IBM IoT Foundation with Arduino Mega. In the next example we are going to decode against algebraic data type. The return value of the jwt. First we must implement a menu item using the hook_menu. null (see json. I'm surprised no one has created a simple interface to wrap JSON serialization like we have done for everything else. It is the most popular Arduino library on GitHub. We will see how to utilize the Json. We will use the Arduino core as programming framework. Here I am parsing a JSON array and inserting it into a MySQL database. 4 or higher → for band decoder: Remove all jumpers. Handled ADC sends data first to web client and after that it reads DHT11 sensor to prevent data lags. Then we write another code for Arduino to get data from ESP-01 and execute the command (e. In this article we will do the opposite: Data Push. but fast and small. User in this case, while code required to convert JSON String to Java object is just two lines in fromJson(String json) method. Home » Difficulty level » Advanced » ESP8266 (Web Client): Sending Data to Domoticz in TCP/IP Wireless (API/JSON) - Part 1 Advanced Domoticz ESP8266 Web Client Wemos D1 mini ESP8266 (Web Client): Sending Data to Domoticz in TCP/IP Wireless (API/JSON) - Part 1. The following two examples demonstrate, first with an array, then with an object:. It involves passing the raw JSON string to the jsonDecode() function, and then looking up the values you need in the resulting Map. Wireless communication between Arduino and Node. After importing JSON data you will need to read the data in PHP format. file_get_contents, which I though was only used to retrieve content from local files or traditional URLs, allows you to use the special php://input address to retrieve JSON data as a string. JSON data consists of nested attribute-value pairs. You might consider using JSON if your application needs to store somewhat complex data. How to decode the nested json from ajax post. Re: Send sensor data to ThingWorx using Arduino and SIM808 GPRS module To invoke service, post is working fine, Thanks for support Velkumar R For updating certain SENSOR DATA, I have constructed JSON and attached it as below, but still not reflecting in sensor value, still service only is invoked, but sensor data is not updated on ThingWorx. Json is well-known data-interchange format which is often used for communication between a server and client, and is particularly useful owing to its easy-to-read format and simplicity to parse and generate. Both functions only work with UTF-8 encoded string data. Net WebMethods. You can simply achieve a recall of 100% by classifying everything as the positive class. NET running on Windows Server can easily exchange JSON data with an application written in Python and running on Linux. Our main focus in this post will be decoder function. Incidentally in a JSON response the first { usually signifies the start of the JSON document. Changes can be requested by filing a ticket on Phabricator. Js get Data From JSON As We know most of single page apps works with apis and we deal with json data so here in this article we are going to explain how you can get data from JSON file. how to read a. The returned data is parsed using. JSON encoding and decoding with Python. Links: Arduino Json Lib Home Serial to JSON in Node. ajax() method in jQuery you can get JSON data from a file and set in the HTML element. Those pre-defined PHP functions make our work easier. Changed domain name and also changed cron values with new domain name. I am using the code: #include <ESP82. I have the Ethernet shield and publish the sensor data via MQTT using a JSON string to Bluemix. JSON-JavaScript Object Notation. So our next example shows how to fetch some JSON data, allowing us to press a button to show random cat GIFs. js and Arduino Decoding and Encoding JSON with Arduino or ESP8266. Catch and parse JSON Post data in PHP. Json encoding (javascript encoding) is required to pass data in json request. aJson is an Arduino library to enable JSON processing with Arduino. We can also decode any tv remote control. JSON parsing in Arduino, opens up lot of opportunities and I immediately wanted to test it. NET Core How to post complex JSON data to server in ASP. Hey imran thanks for ur reply But how do i get the Json data, Its not static right?? I need to get that data from Controller and pass that to the view. Re: Send sensor data to ThingWorx using Arduino and SIM808 GPRS module To invoke service, post is working fine, Thanks for support Velkumar R For updating certain SENSOR DATA, I have constructed JSON and attached it as below, but still not reflecting in sensor value, still service only is invoked, but sensor data is not updated on ThingWorx. From there you use json_decode to turn the JSON string into a workable object/array. json file in. They are available in the “Examples” menu of the Arduino IDE. It's very limited. What is JSON. For example, if I am look at 5 days, and all 5 days have the same information (such as Temperature, wind speed, humidity, and chance of precipitation), then Matlab will format the data as a structure array. How to parse JSON data from HTTP GET request using Arduino Mega 2560 (self. Arduino POST HTTP Parser: A library that allows for easy parsing of POST packages. Example-1: In the following example, JSON data is assigned in a variable and PHP json_decode() method is used to read the data in PHP format. arduino) submitted 2 years ago * by ievanb I'm having an issue parsing JSON data from a GET request. Decode and Send 433 MHz RF Signals with Arduino This guide shows how to use an Arduino to decode 433 MHz signals from RF remotes, and send them with an Arduino and a 433 MHz transmitter to remotely control mains switches outlets. aJson is a library to receive, understand, […]. Creating JSON/Encoding of JSON:-Encoding of JSON means we will create JSON object/stream and similar to wthat we read from input file while parsing. Reading the accelerometer on the Arduino is pretty standard, but the formatting of the serial output is special. For that, the second method json_decode() we have listed at the beginning of this article, will be used. You can use ArduinoJson Assistant to compute the exact buffer size, but for this example 200 is enough. NOTE: I will be using a DHT11 temperature sensor to produce data on the Arduino end. First, install JSON Perl module from CPAN:. The official examples of ArduinoJson version 6. This library gets the task of encoding and decoding JSON done in a fairly easy to use way. By this you don't have to bother with data encoding and decoding - this will aJson handle for you. jQuery to PHP via AJAX using JSON. 'Key' as in the variable and 'value' as in the corresponding value for the variable. Saving the data to a database server. Besides, if we disassemble the receiver housing and all input pins, we lose almost 70% weight and also save space. Typically, the JSON data will represent a JavaScript array or object literal which json_decode will convert into a PHP array or object. We check to see if the result is an array. Handled ADC sends data first to web client and after that it reads DHT11 sensor to prevent data lags. Changes to the JSON format are subject to the Stable Interface Policy. Load JSON, URL-encode JSON. In this article I will explain how your hardware can push data into a Google spreadsheet. When most people hear the term "JPEG decoding," they will usually assume that it's something really difficult, something that requires lots of processing power and complicated mathematics, something that is impossible - or at least impractical - on relatively cheap and slow 8-bit microcontroller platforms like the Arduino. PHP cURL - How to get json object and decode the data. Overview Package json implements encoding and decoding of JSON as defined in RFC 7159. NET Core in C#, JavaScript for Visual Studio 2017 This site uses cookies for analytics, personalized content and ads. The ArduinoJson library is also capable of serializing JSON, meaning you could generate your own JSON data using data from sensors connected to your ESP8266 or Arduino for example (will be covering more about JSON serialization, in detail, in another instructable). JSON decoding (comments are supported) JSON encoding (with optional indentation) MessagePack; Elegant API, easy to use; Fixed memory allocation (zero malloc) No data duplication (zero copy) Portable (written in C++98, can be used in any C++ project). Read JSON file data from server to unity c#. How FOR JSON converts SQL Server data types to JSON data types (SQL Server) 07/07/2016; 2 minutes to read; In this article. Then we write another code for Arduino to get data from ESP-01 and execute the command (e. After adding 100 malaware detected to the exceptions, I suddenly received the. Decoding JSON Data using PHP. How to get json data from remote url into Python script | Power CMS Please click here if you are not redirected within a few seconds. JSON can represent two structured types: objects and arrays. Objects Object -> tuple. When working with PowerShell, Microsoft has provided some helpful tools to work with JSON called the ConvertTo-Json and ConvertFrom-Json commands. Decoder library when dealing with different type of data. lines: bool, default False. Arduino JSON Decode Example: This program makes NodeMCU as a client to send http request to web server (similar to your web browser) and gets JSON response from it and decodes it. A properly formatted JSON data feed will easily be converted to a dataset and worksheet as follows. Let's try to decode the token from above that had an associated expiration time. So you can calculate the pulse width as 39. I am trying to parse a JSON array on a Pi server via wifi. 5 or older, but not in any sites that were initially created in 3. Decoding JSON data is as simple as encoding it. Json encoding escapes " by prefixing it with \ and encloses the result in double quotes. Moreover, it can be integrated with server-side JavaScript also. If this function returns, it means that the token was determined to be valid, so the information in the payload can be trusted as legitimate. /* Saving Values from Arduino to a. But now I want to read the same sensor data from thingspeak using AT command. You can access the protocol number in My_Decoder. decoder = Json. The author of this library has ported JSON parsing to Arduino. Use MQTT to send/recieve JSON using an Arduino with Ethernet! - mqtt_meshblu_send_receive. csv Now we will handle the processing side. You can use Arduino IDE to compile both codes and Upload them to the boards. We have created struct for user data, Then we have created empty user variable of New_User type. With JSON, you use JavaScript's array and object literals syntax to define data inside a text file in a way that can be returned as a JavaScript object using eval(). It is the most popular Arduino library on GitHub. /* Saving Values from Arduino to a. simplejson — JSON encoder and decoder¶ JSON (JavaScript Object Notation), specified by RFC 7159 (which obsoletes RFC 4627) and by ECMA-404, is a lightweight data interchange format inspired by JavaScript object literal syntax (although it is not a strict subset of JavaScript ). We'll describe how to decode this in later sections. Overall, the following types are allowed for each field in your object: String => string. JSON is JavaScript Object Notation, a simple encoding of Javascript-like objects that is ideal for lightweight transmission of relatively weakly-typed data. Decode as Decode exposing (Decoder) import J…. An array is an ordered sequence of zero or more values. 2>Arduino UNO I have successfully connected my ESP8266 module to wifi through AT command. I want to convert a json file into a dataframe in pandas (Python). But it's faster and smaller. other languages have json parsing libraries. When decoding strings from the database, make sure the input was encoded with the correct charset when it was input to the database. To create a JSON string, you start with a variable containing some data, then pass it through a function to turn that data into a JSON string. The JSON module contains JSON-specific decode/encode functions that convert a JSON string into a Perl data structure, and vice versa. Reading the accelerometer on the Arduino is pretty standard, but the formatting of the serial output is special. This is parti Skip navigation. The following are code examples for showing how to use json. Connect to the server as usual with [code ]espClient. Note that the decode() method needs to know the type of the result instance. Once the Query Editor has loaded your data, click Convert > Into Table, then Close & Load. With the help of decode() method of JSONDecoder class, we can also decode JSON string. Why if super class had conform to codable subclass object can't get initialise from JSON using jsonDecoder object?. To do that, the json package provides a more powerful type: json. If you are not familiar with it, you can think of it as enumeration. json can't be reliably parsed with regular expressions any more than xml or html can. The tests of this ESP32 tutorial were performed using a DFRobot’s ESP-WROOM-32 device integrated in a ESP32 development board. This is the reverse operation of JSON encode, obviously used to convert JSON encoded data into its original PHP data type from where it is encoded initially. Handling JSON Encode And Decode in ASP. So our next example shows how to fetch some JSON data, allowing us to press a button to show random cat GIFs. This can be done using an Arduino Xbee shield. It shows your data side by side in a clear, editable treeview and in a code editor. Here’s a simplified version of the data type: module RecursiveJson exposing (. The ONS data showed a rise in the number of babies named Harper since 2011, the year David and Victoria Beckham's daughter was born. In this tutorial, I’ll show you how to write JSON data to a file using JSON. JSON provides data to its corresponding calling function in key, value pairs. I have a REST service which is receiving the encoded body of a post request, and I'm not able to decode the body into a valid json string for parsing. Typically, the JSON data will represent a JavaScript array or object literal which json_decode will convert into a PHP array or object. Different examples of parsing JSON data using PHP are given below. Let's start with the obvious choice, the native JSON module in the Python standard library. JSON is a favorite among developers for serializing data. 0 29 November 2014 json, arduino, c-2. In this post, we explore how to implement push notifications on various IoT platforms, specifically platforms such as the Arduino, Firebase, and Android. May 11, 2015, we've got our callback function which uses the returned JSON data. The JSON data starts with a { and ends with a }. 3 hours ago · At the time SNP group leader on Aberdeen City Council Stephen Flynn described the decision as outrageous and called for an immediate by-election. You can now clearly identify the different constructs of your JSON (objects, arrays and members). For example, an application written in C++ How to Fix Windows Visual C++ Runtime Errors How to Fix Windows Visual C++ Runtime Errors Visual C++ Errors are a common problem for Windows users. We'll describe how to decode this in later sections. You can scroll down to view the program or read further if you. If you need to parse a JSON-formatted string in Perl, you can use JSON Perl module. For this tutorial, we will be using the following JSON data:. The mapping between JSON and Go values is described in the documentation for the Marshal and Unmarshal functions. Hi! This is the first question I make in the forum! Is in the context of good practices sending data from Arduino to Processing, and vice versa. In this project the data regarding the geographical coordinate is extracted from the GPS output with the help of the Arduino and send it to a remote PC with the help of Xbee transceiver. The following shows that in MongoDb, data is stored in JSON format (to be specific, a variant of JSON, called BSON is used). Let's create a new method inside above class and copy/paste following code. What can you do with JSON TO HTML CONVERTER ? This tool will help you to convert your JSON String/Data to HTML Table ; To Save and Share this code, use Save and Share button. Add the array to an object, and return the object as JSON using the json_encode() function. Decoder and json. NOTE: I will be using a DHT11 temperature sensor to produce data on the Arduino end. Getting Started. Handler to call if object cannot otherwise be converted to a suitable format for JSON. Read more about representing these types as JSON in the REST API guide. For example, if my incoming JSON string like: {"TPS":"0. State-of-the-art JSON decoder libraries There are a few JSON decoding libraries out there, but there's one that stood out from the rest when I made the research a while ago. Json_decode() takes a JSON encoded string and converts it into a PHP variable. 0 29 November 2014 json, arduino, c-2. This will only work on very simple JSON strings. dumps() function to decode the json data. Net WebMethods. Good morning mate, I'm getting a JSOn via Serial from another arduino, how do I do the decoding of this JSON, I could not do it. If you are not familiar with it, you can think of it as enumeration. This sample demonstrates how to post complex JSON data to ASP. I'm trying to parse JSON logs our server application is producing. In the poll mechanism, as described in my previous article, the Google spreadsheet runs a script that sends a request to fetch data from our hardware at a regular interval. It could be parsed to extract specific information for visualization int temp; // this is the data point that I uploaded from my arduino // (a TMP36 analog temperature sensor --> Arduino Uno --> Ethernet Shield --> Thingspeak) using a standard arduino upload program void setup() { //below, you should use your own channel. Be careful if several compilation units compose your program, i. What is JSON?. Manual JSON decoding refers to using the built-in JSON decoder in dart:convert. At first import json module. NET running on Windows Server can easily exchange JSON data with an application written in Python and running on Linux. It easily enables you to decode, create, manipulate and encode JSON directly from and to data structures. Creating the JSON is easy. 24ms/128 = 307us. Incidentally in a JSON response the first { usually signifies the start of the JSON document. csv Now we will handle the processing side. It is easy for machines to parse and generate & JSON is Language independent. To do that, the json package provides a more powerful type: json. other languages have json parsing libraries. Otherwise you can read. To create a JSON string, you start with a variable containing some data, then pass it through a function to turn that data into a JSON string. (We can also use it to special-case encoding of a value. csv File Using Processing - Pseduocode This sketch provides a basic framework to read data from Arduino over the serial port and save it to. The PHP showcase will show you how the output of the example code will look like when you execute it on your server. It easily enables you to decode, create, manipulate and encode JSON directly from and to data structures. When TRUE, returned object s will be converted into associative array s. 4 or higher → for band decoder: Remove all jumpers. You clicked a link that corresponds to this MATLAB command: Run the command by entering it in the MATLAB Command Window. Value to be returned for items with a value of json. There has been a number of great libraries for this, but it is quite refreshing to see a fully-supported solution that is easy to adopt but also provides the customization you need to encode and decode complex scenarios. There are a few things. Sending Commands to an Arduino (or other IoT device) While much traffic in the internet of things, is device-to-cloud, sometimes it is important to send data from the cloud to an IoT device. Incidentally in a JSON response the first { usually signifies the start of the JSON document. JSON data structures are very similar to the PHP arrays. There are two common ways to get data in web apps: data from servers using an API (usually JSON) and data from databases. I am sending dropdown data to php in json format by ajax call and decoding it and trying to insert that data into db. Unfortunately, I can't really get a result back from the test contract I created. Field 7 (0) is the number of fill bits requires to pad the data payload to a 6 bit boundary, ranging from 0 to 5. The PHP showcase will show you how the output of the example code will look like when you execute it on your server. Overall, the following types are allowed for each field in your object: String => string. In this section we will learn how to convert python data to JSON data. 24ms/128 = 307us. Incidentally in a JSON response the first { usually signifies the start of the JSON document. This is how my JSON array looks like: ["{custInfo=Ujwal 9975022560, rate=24000,. In this tutorial, we will show you how to process ajax request using jQuery and call a PHP script that returns JSON data. With JSON, you use JavaScript's array and object literals syntax to define data inside a text file in a way that can be returned as a JavaScript object using eval(). org/current ) and parse one of the values (e. 8 updates and performed a malware scan. For example, an application written in C++ How to Fix Windows Visual C++ Runtime Errors How to Fix Windows Visual C++ Runtime Errors Visual C++ Errors are a common problem for Windows users. July 27, 2012. Share on Twitter Encode or Decode JWTs. You can vote up the examples you like or vote down the ones you don't like. Browse to your JSON file location, select it, and click Open. dumps() function to decode the json data. 2>Arduino UNO I have successfully connected my ESP8266 module to wifi through AT command. I've been interested in getting data off the computer screen lately, and the Arduino seems. As we have seen, some devices are running using the ir remote. The created JSON tree can be navigated by collapsing the individual nodes one at a time if desired. How to use GPS with Arduino - Parse and Log NMEA Sentences By Aidan , updated on 22 November 2018 Now that we've investigated and explained how How GPS Receivers work we can apply that understanding to some real-world applications of of the ideas. It’s designed for systems with limited resources, supports both encoding and decoding, and has a simple and elegant API. Number type to delay decoding of a particular value. For more complicated usecases and more control see. Share on Twitter Encode or Decode JWTs. An introduction to data serialization and Python Requests This is a hybrid primer that covers: Basic usage of the Python Requests package to download files from the web and, in the case of JSON text files, decode them into Python data structures. ajax() method in jQuery you can get JSON data from a file and set in the HTML element. How to read a value from JSON using PHP? JSON (JavaScript Object Notation) is a convenient, readable and easy to use data exchange format that is both lightweight and human-readable(like XML, but without the bunch of markup). JSON(JavaScript Object Notation) is a lightweight computer data interchange format. In this tutorial you will learn how to encode and decode JSON data in PHP. We validate the content type. For example,. Objects Object -> tuple. aJSON library provides the parse method which allows you to parse or decode JSON strings. change the PWM). Arduino JSON is very helpful Library for encoding and decoding of JSON. protocolNum, the number of bits in My_Decoder. Note that the decode() method needs to know the type of the result instance. JavaScript Object Notation (JSON) is a lightweight data-interchange format. luminous: multisite: rgw_data_sync_status json decode failure breaks automated datalog trimming. The FOR JSON clause uses the following rules to convert SQL Server data types to JSON types in the JSON output. NOTE: The canonical copy of this document can be found in the Wikibase source code and should be edited there. get_json() was used, Python is aware that this is a JSON object. Decoding JSON Data using PHP. Json encoding escapes " by prefixing it with \ and encloses the result in double quotes. connect()[/code]. Saving the data to a database server. That is where I am stuck. Overall, the following types are allowed for each field in your object: String => string. Java provides different ways to Base64 encode and decode a byte[].