Parse JSON data and create java classes (Deserialization) Let's suppose we have to send data to a remote server using HTTP connection and the data is represented in a java class. which means it can later be parsed and decoded into data types. It is easy for machines to parse and generate. NET, Microsoft Office, Azure, Windows, Java, Adobe, Python, SQL, JavaScript, Angular and much more. This is the continuation of my previous Java tutorial Insert Records into MySQL database using Jquery, now I want to explain how to convert records data into JSON data format and display JSON data feed using Jquery. Websites updating live sports scores can be considered as an example of AJAX. Mapping between JSON and Java entities. Once you have that in place you need to take that data and save it off to a database. Use Gson API. Its API can be found here. We have number of functions in jQuery to kick-off an ajax request. net and php, using xml and json, asynchronous request handling, ajax example with database and a lot of ajax topics. Suppose we have a form that asks the user for their country followed by the state or province (if applicable). send json data using http request post method Aug 19, 2016 12:00 PM | jameerasp. Summary: in this tutorial, we will show you how to work with PostgreSQL JSON data type. This sample writes LINQ to JSON objects to a file. net application, in general we upload the files and save them to the file system and store the URL of the saved file in the database, but there are specific scenarios which demand us to store the entire files into the database in binary format. the JSON file data will be like below things. Search data from HTML table using jQuery. please tell me how to create these json file using servlet. Step 1: Creating Database and Connecting Database (MySQL) with PHP. In Java, Play uses the Jackson JSON library to convert objects to and from JSON. There are many ways to send JSON data to the server. JSON HTTP using JQuery; JSON Database List ; Some database management systems store data as JSON documents. We have trained over 90,000 students from over 16,000 organizations on technologies such as Microsoft ASP. The code footprint pretty small and it gives you a good idea about how a TDP Server opens up a port, and then the TCP Client sends or receives data from that port. November 3, 2015 Use JSPDF for Exporting Data HTML as PDF in 5 Easy Steps July 29, 2015 How To Manage SSH Keys Using Ansible August 26, 2015 How To Write Spark Applications in Python December 14, 2015 How To Add/Remove Input Fields Dynamically with jQuery November 9, 2015 Sending JSON Data to Server using Async Thread. Limitations. { "value" : null, } What is the easiest way to achieve this?. FeedServlet. … Continue reading "Jackson to convert Java Object to/from. Database JSON File This article series was rewritten in mid 2017 with up-to-date information and fresh examples. Using the mysqli library is a step ahead from the (soon to be absolutely deprecated) mysql one, and you can and should make use of prepared statements as they will offer a convenient layer for evading SQL injection attacks (without deeply elaborating on this, this is the practice of inserting malicious code snippets into database queries which. com/translate?u=http://derjulian. JSON is less secured whereas XML is more secure compared to JSON. My thinking is that if you need to access Database server for grabbing data from your phone/tablet application it will be better to create web-service(php,ruby on rails, asp. value set to new Value(null). A JSON request is an HTTP request using a valid JSON payload as request body. How to Retrieve Data from the database and write into excel file using Java Hi, I am trying to develop an small application where i trying to retrieve Data from the database and store the details in excel file. Normally this automatic deserialization is exactly what's required -- once you get the document back as an object you can manipulate it just like any other object in the application. Sending data from android application to online server using AsyncTask background method dynamically. Upload your JSON file by clicking the green button (or paste your JSON text / URL into the textbox) (Press the cog button on the right for advanced settings). Definition from WhatIs. json) library in Java or Android application. Next, you have to create a PHP file (Server side scripting - To get the data from database and send to the Android project). how to send ajax call to java servlet and retrieve a database table having 5 columns data in json and render it to jsp for display. SQL 2016 brings in many new features such as Data Masking, Always Encrypted, multiple TempDB database files, Query Store, JSON support, Row Level Security, R, and Stretch Database etc. Learn how to convert the mysql query result set to json format or file with PHP Programming Language. We have trained over 90,000 students from over 16,000 organizations on technologies such as Microsoft ASP. Firebase also supports multi-path updates. the JSON file data will be like below things. Following are 5 simple steps to create your first RESTful service that returns data in XML. Using a separation of concerns approach then better approach is to collect the data, store in a database, perform your query based on user input in the database and then return the results in JSON format to the Client side to display the data. CustomTypeName. net c# by one click Convert XML or JSON into a class by using visual studio is as easy as just copy and two clicks, never matter how big or how complicated is our XML or JSON. Although originally derived from the JavaScript scripting language, JSON data can be generated and parsed with a wide variety of programming languages including JavaScript, PHP. JSON is a text-based way to depict the state of an object in order to easily serialize and transfer it across a network from one system to the next -- especially useful in. Migrating a Big Derby embebed database to HSQLDB throw java. Nowadays, JSON is the most widespread format to exchange data on the Web. which means it can later be parsed and decoded into data types. Learning how to convert Java objects into JSON and JSON into Java will help you a lot in your work as a full stack mobile app developer. First the multiple rows (records) will be insert into an HTML Table and then the data from all the rows of the HTML Table will be sent to Controller using jQuery AJAX which will be ultimately saved to database. An object is an unordered collection of zero or more name/value pairs. ajax() method in jQuery you can get JSON data from a file and set in the HTML element. Method-1 : HTTP POST using Web API destination (In Data Flow) This method allows you to read data from any source and generate POST data and then submit to API endpoint using SSIS Web API Destination. All Possible Examples. Just find out that this method doesn't work on windows, but works fine on linux. This tutorial provides an introduction to working with JSON in JavaScript. and Java MySQL JSON Display Records using Jquery. HTML5 is designed with extensibility in mind for data that should be associated with a particular element but need not have any defined meaning. How to Retrieve Data from the database and write into excel file using Java Hi, I am trying to develop an small application where i trying to retrieve Data from the database and store the details in excel file.  We would want the country selection. An object is an unordered collection of zero or more name/value pairs. simple is a simple Java toolkit for JSON. There's been an insurgence of database management systems that use JSON to store data. You can customize this code further as per your requirement. The tutorial will guide you how to use Jackson for converting Java object to Json and vice-versa. In this post, I am going to explain how to sync data present in Android SQLite database to remote MySQL DB. Just serialize the C# objects to JSON and send them to the database. 4 and any database will accept JSON documents as a single string blob. An array is an ordered sequence of zero or more values. example will result in a generated Java type with a fully qualified name of com. Modify JSON text by using the JSON_MODIFY function. Through my blog, I will discuss about sending JSON objects with ajax request using JQuery. How to sending an email using gmail account in c# and how to enable in gmail account to send mail? . Net technology is widely supported XML file format. Java JSON library tour - In this series of Java JSON tutorials, we focus on three popular third party Java libraries to process JSON data, which are Jackson, Google Gson and JSON. I just went searching for a nice, simple example of populating a form from a database, using AJAX and JSON. NET AJAX: A Look at JSON Serialization; An Introduction to JavaScript Object Notation (JSON) in JavaScript and. Previous entries in this blog have shown how you can store and query existing JSON data. One is MySQL with PHP and the next is MySQL with Java. Now we can create a file to save requested data to database. Requirements. Creating JSON data in Java JSON. retrieve specific data via calling restful by using java not tools. Finally, you have to create a Activity using Java. Spring Boot Restful Client with RestTemplate Example. NET Documentation. Package structure for more details please check my previous java tutorials. Start loop that reads JSON data using you read data and send it to ModelCmd. JSON (JavaScript Object Notation) is a lightweight, text-based, language-independent data exchange format that is easy for humans and machines to read and write. net and php, using xml and json, asynchronous request handling, ajax example with database and a lot of ajax topics. Upload your JSON file by clicking the green button (or paste your JSON text / URL into the textbox) (Press the cog button on the right for advanced settings). Since Java objects are only understood by Java applications we need to convert the java object to JSON when creating a web service for the android app. When you load newline delimited JSON data from Cloud Storage, you can load the data into a new table or partition, or you can append to or overwrite an existing table or partition. Hi! This post will show you how to display json data in html table using jquery and ajax call. ##3 Implicit change of workflow using Java 8 Streams. JSON is text based data-interchange format. These properties make JSON an ideal data-interchange language. November 3, 2015 Use JSPDF for Exporting Data HTML as PDF in 5 Easy Steps July 29, 2015 How To Manage SSH Keys Using Ansible August 26, 2015 How To Write Spark Applications in Python December 14, 2015 How To Add/Remove Input Fields Dynamically with jQuery November 9, 2015 Sending JSON Data to Server using Async Thread. example will result in a generated Java type with a fully qualified name of com. I am working on a n integration project that required me to call a webservice through a stored procedure in the SQL database. There are database packages that are designed to store information in JSON format, some of which also come with built-in encryption support. In this post, we are going to look at how to connect an Android app to a MySQL database using a free SkySilk VPS. Developers use de-serialization from JSON/XML to simple Java,. This technique is possible with the new JSON functions starting in SQL Server 2016, and is nice for the following reasons: Simplifies application code. Database table I’ve included the sql file to create the …. Convert Java object to JSON 3. As of jQuery 1. For example the ajax. All Possible Examples. NET MVC and Console appliction example for it. jackson-databind: A package that convert JSON to and from POJOs. Webucator provides instructor-led training to students throughout the US and Canada. JSON can represent two structured types: objects and arrays. Retrieve data from database Using Ajax call. fromjson Reads JSON records and writes an Avro data file. You can access JSON data stored in the database the same way you access other database data, including using Oracle Call Interface (OCI), Microsoft. It also introduces more low-level details such as how to extend the User Auth, message queues and concepts on how the technology works. I am working on a n integration project that required me to call a webservice through a stored procedure in the SQL database. Model binding JSON POSTs in ASP. In this blog, I will describe how you can use JAVA to leverage JSON data from a REST API. JSON will be in string format and string can be saved to a varchar or CLOB data type in database but as of my experience it's not good to keep a very long string in database beca. Following are 5 simple steps to create your first RESTful service that returns data in XML. Using sockets, one can create much more responsive web applications with JSON-RPC, compared to polling data from a service with JSON-RPC over HTTP. How to Configure the AS2 Service to Receive AS2 Transfers. Size appears at the top right of the field with the generated data. In situations, such as JSON-RPC (JSON Remote Procedure Calls), nested objects can leave us with data that isn't easily serialized into a collection of name-value pairs. send json data using http request post method Aug 19, 2016 12:00 PM | jameerasp. I am retrieving data using WebMethod from SQL database my code is : JSON. Allows you to convert a JavaScript object into JSON string. You can simply get them via Maven Central using the following dependency:. $http Service & How to POST JSON Data using AJAX & Spring MVC. simple and have added the location of json-simple-1. It shows your JSON side by side in a clear, editable tree-view and in formatted plain text. RProtoBuf provides cross-language data serialization in R, using Protocol Buffers. How to Send and Receive JSON Data to and from the Server. If you use Java and want to do easy API testing. You don't have to create all these types manually. Using PHP MySQL 8 JSON Data from PHP get files 9 JSON MySQL setup table and database 10 JSON PHP array data 11 JSON PHP arrays json encoding 12 JSON MySQL Data connection 13 JSON MySQL Data output to JavaScript object 14 Source Code for PHP. As you know, JSON format is widely used across platforms and languages and with AJAX you can send and receive HTTP requests asynchronously between client and server. xslt > currencies. Now we'll see how to convert a cursor result set to JSON data. Recently I have to pass JSON data to REST Service and did not have any simple Client handy. This mechanism is supported by the JSON and XML data adapters and supports the PUT, POST, and GET verbs. First, you have to read in the JSON data and mapping that data to your domain model isn't always easy. How to Enable SSL for HTTPS/AS2 Server Connections. Need to update any permissions in gamil account and how to set smtp client. Using the SQL Wizard to Join Data from Two Database Tables. @ChristophThiel can you help me, How can I get data from MySql using Php to the ListView in my Xamarin Application and I also want to send the data to the database but the data is in different axml pages how to combine it to one place and send it. The json part of the body should also be set as "File" rather then "Text", and put your json data in a json file for example "a. The main features used in the SQL statement are the WITH clause to define the inline views per object (Department, Manager, Employee), Scalar Subquery to retrieve the result from an inline view as string intoRead More. A logger, to send output to the log (the console, in this example). Created transaction objects title, description and url. Using multi-path updates, we can add nicknames to both Alan and Grace at the same time:. Now we can create a file to save requested data to database. How to read data from JSON and display in a table using jQuery. Json Data string from database records User browser sends xmlhttprequest to backend server scripts to send data. Here's how you can add JSON to such a database. The Java API for JSON Processing provides portable APIs to parse, generate, transform, and query JSON. To select specific parts of a JSON data, you can use JSON Path. JSON is smaller than XML, and faster and easier to parse. So I wrote one. Send JSON Request and Read JSON Response using JAVA jinu jawad m JAVA-Send URL HTTP Request and Read JSON Response Programming in Visual Basic. QJson is a qt-based library that maps JSON data to QVariant objects. It's already used to send data to the server. So there are only two challenge left, 1. [FONT=Verdana] still having a hard time with this… trying to go from here: am trying with code in last response on this page… and of course the last question here, by OP, remains unanswered. As long as your data is formatted as one of these types, it should be valid. About; Publications Mathematics of Machine Learning Learning Android App Programming Android Quick Code Access HTML5 Canvas for Dummies HTML5 Canvas Quick Code Access Technology Topics Technology Tweets. Java: Reading From and Writing JSON Data to File. Sending data to the cloud is a common task in mobile applications. In my previous post I have shown you how to insert data to a SQLite database. Do you want to preserve the JSON and also do operations on it, ie, store the JSON doc but extract the customer_id so you can search on it? Or do you want it in actual table. Database DevOps Join the DZone. Although originally derived from the JavaScript scripting language, JSON data can be generated and parsed with a wide variety of programming languages including JavaScript, PHP. You can also query, from within the database, JSON data that is stored outside Oracle Database in an external table. Prerequisites. In other words, we just add an extra phase on top of producing a version of your database filled with fake data, and because we are scripting the. Note: GET requests are supported, though not recommended while using this service. In this blog, I will describe how you can use JAVA to leverage JSON data from a REST API. Oracle REST Data Services (ORDS) : Create Basic RESTful Web Services Using PL/SQL. How to insert data from XML to database XML is a general purpose tag based language and very easy to transfer and store data across applications. then requests and also change the headers and off course send data, all we. I was using a form to create records in the DB which had a content field that was valid JSON, but it included curly apostrophes. There are no of ways through which we can send data to server. PHP has some default functions which. Database table I’ve included the sql file to create the …. Next, you have to give Internet Permission in Android Manifest(Controller of Android Project) file because, we are going to connect with server to get data. A JSONObject is an. Size appears at the top right of the field with the generated data. And it's simple to use JSON_table to receive documents and store the data relationally. The data received is in XML format or JSON library to support conversion of a Java object into JSON and. You can encode and decode with java. NET objects to be used in the application. Is it wise to store a big lump of json on a database row? No, generally it is a bad idea to store multi-valued data in one cell of a relational database because it goes against the basic structure/rules of RDBMS (as mentioned in the other answer). jQuery AJAX Call to PHP Script with JSON Return. There are only 11 steps to POSTing JSON data to a Mule flow. When the input JSON has null for the value field of a data object (see below for example), Data. simple) provides us with classes that are used to parse and manipulate JSON in Java. To map JSON to POJO we use ObjectMapper class which is available in com. PHP has some default functions which. which means it can later be parsed and decoded into data types. Assuming I have the following table in my PhpMyAdmin. The popularity of JSON resulted in its native support by many databases, the latest versions of PostgreSQL and MySQL contain the native support for querying the data stored in JSON fields. Connecting to a Web Service Using a JSON Data Adapter You can configure a data adapter to connect to a REST web service. As of jQuery 1. Discover how to LOAD JSON data from a given URL AS data into a graph database in this walkthrough that covers Python, JavaScript, Ruby, Java and Bash. net/projects/roboking. It sounds to me you would be best using an array. json' invoked using package name com. Now we can create a file to save requested data to database. NET MVC and Console appliction example for it. So let’s start our Android JSON Parsing Tutorial. Here Mudassar Ahmed Khan has explained with an example, how to insert (save) multiple rows (data) from HTML Table to database using jQuery AJAX and Entity Framework in ASP. You known, file data is usually stored in database in column of BLOB type, so with JDBC we can use the method getBlob() defined in the java. JSON data is in human readable form. jar" -IN no-attributes. JavaScript Object Notation (JSON) is a lightweight data-interchange format. Sending data to the cloud is a common task in mobile applications. net and php, using xml and json, asynchronous request handling, ajax example with database and a lot of ajax topics. JSON can represent two structured. Search data from HTML table using jQuery. I found this question and answer here on Stack Overflow "How do I update JSON file using PowerShell" but executing the script provided in the answer changes the structure of the JSON file substantially and adds quite a bit of what looks like PowerShell metadata. class json. Although Oracle Database is an object-relational database, it does support JSON (and XML). The Symbian Foundation’s OS allows us to develop applications using the native C++ framework, Java ME, Adobe Flash, web applications, widgets using web tech- nologies, Python, and Qt, a free C-based framework owned by Nokia (Qt is the current recommended platform for creating native applications for Symbian and MeeGo). According to the AJAX model, web applications can send and retrieve data from a server asynchronously without interfering with the display and the behavior of the existing page. jQuery AJAX Call to PHP Script with JSON Return. Sometimes you may need to load data dynamically based on user input or data based on user selected dropdown list, then you can implement jQuery Ajax call to controller and get JSON data in return and append it to your View, so let's understand it, how we can achieve it using ASP. Finally, you return to the client-side and implement callback(), and other JavaScript functionality to update the HTML DOM. Please can. Can you please give me some example or steps to complete it in c#?. But in the POST method, the data to be send will be send as the argument of the send function. After three decades of relational data modeling, everyone’s pretty comfortable with schemas, tables, and entity-relationships. Generating JSON data. please send me. You should use POST requests if possible. In the backend a Java servlet is running to receive POST request, read the JSON content, map it to Java object, add the received. So I will start off by using getJSON. Creating JSON data in Java JSON. Here's is what I have so far:. MongoDB is a document database, which means it stores data in JSON-like documents. About; Publications Mathematics of Machine Learning Learning Android App Programming Android Quick Code Access HTML5 Canvas for Dummies HTML5 Canvas Quick Code Access Technology Topics Technology Tweets. jar to class path. For example, this file 'parent. send json data using http request post method Aug 19, 2016 12:00 PM | jameerasp. Learn to use jackson objectmapper to populate java object from json string and write json string from java object. As you showed using Firebug, the data is being sent as a URL en. ResultSet interface. json library, already available with Cordova. You can use Volley Library to send data to server please Check this Post:- Send data to the server using Volley. Use Base64 encoding to save your binary jpeg / gif / zip file / database / Doom level file / etc. Since Java objects are only understood by Java applications we need to convert the java object to JSON when creating a web service for the android app. JSON is a text-based way to depict the state of an object in order to easily serialize and transfer it across a network from one system to the next -- especially useful in. This is the continuation of my previous Java tutorial Insert Records into MySQL database using Jquery, now I want to explain how to convert records data into JSON data format and display JSON data feed using Jquery. fetchall() resultSet would be a list of items fetched from database. Allows you to convert a JavaScript object into JSON string. Instead of using a FORM and requiring the user to explicitly submit it to transmit information back to the server, Ajax lets you perform such requests seamlessly at any time, using data that don't necessarily come from form elements, then get the result back without refreshing the page. Start loop that reads JSON data using you read data and send it to ModelCmd. We have trained over 90,000 students from over 16,000 organizations on technologies such as Microsoft ASP. Discover how to LOAD JSON data from a given URL AS data into a graph database in this walkthrough that covers Python, JavaScript, Ruby, Java and Bash. JSON objects are easy to read and write and most of the technologies provide support for JSON objects. It is easy for humans to read and write and for machines to parse and generate. NET Documentation. This post is about building a basic RESTful application with Maven using the JAX-RS 2. The given url is loaded only after this line is called. I would like to have Data. Limitations. Using sockets, one can create much more responsive web applications with JSON-RPC, compared to polling data from a service with JSON-RPC over HTTP. Created transaction objects title, description and url. The main features used in the SQL statement are the WITH clause to define the inline views per object (Department, Manager, Employee), Scalar Subquery to retrieve the result from an inline view as string intoRead More. How to Retrieve Data from the database and write into excel file using Java Hi, I am trying to develop an small application where i trying to retrieve Data from the database and store the details in excel file. use JDBC to connect mysql. The Domino Data Service allows you to obtain information on databases, views, folders, and documents. In this example, we will use Asp. Now after this we need Advance Rest Client. net Web API into MVC. Update Data from MySQL Using JSP - Learn Update Data from MySQL Using JSP starting from its overview, jsp, servlet, registration form, saving data, retrieve data, delete data etc. You can use new JSON functionalities to integrate Azure SQL Database with other services that exchange data in the JSON format. In this blog post I am going to show you, how we can insert data to a table in a SQLite database when we are developing Android applications. How to Use JSON Data with PHP or JavaScript. Now, I would like to know why am I facing such a bug?. For database here we are going to use MySQL and for building the API we will be using PHP. Devices: You can't put an API key that has full access on a device, because what is on a phone or tablet can easily be stolen. By default an action uses an any content body parser, which you can use to retrieve the body as JSON (actually as a Jackson JsonNode):. I found this question and answer here on Stack Overflow "How do I update JSON file using PowerShell" but executing the script provided in the answer changes the structure of the JSON file substantially and adds quite a bit of what looks like PowerShell metadata. OutOfMemoryError: Java heap space. then requests and also change the headers and off course send data, all we. Can anyone tell me how to generate json data from SharePoint lists in the below format using java script. In this post, you will learn how to read binary data from database with JDBC. How to read clob type data from Database using Java JDBC. simple […] Vote Up 0 Vote Down Reply. getmeta Prints out the metadata of an Avro data file. Finally, convert the XML to JSON using this XSL transformation. Pretty print JSON 4. This tutorial shows how to send HTTP Get Request using java and Read JSON response. You would then configure an XML/JSON assertor to your SOAP/REST response, add an assertion that fits the data, and parameterize the expected Value with the previously extracted data. Following are 5 simple steps to create your first RESTful service that returns data in XML. When we send a JSON packet, however, we're not sending this kind of URL-encoded form data; rather, we're sending "json" data. Please can. This blog post describes how to send data from a JavaScript Client to a C# handler on the server. These libraries can be used in any Java/J2EE project including Servlet, Struts, JSF, JSP etc and JSON data can be created. In this article, we will share different techniques to send JSON data to the server. This very brief article demonstrates how a fairly complex, nested JSON document can be created using a single SQL query. ajax() method in jQuery you can get JSON data from a file and set in the HTML element. Sara Transform the data into json. Translated version of http://derjulian. Your client programs shall connect to the database server at the given IP address and TCP port number, issue the SQL commands, and process the results received. JSON HTTP using JQuery; JSON Database List ; Some database management systems store data as JSON documents. Folks who've worked with me know I'm not always a fan of having data-model classes - in a lot of modern web applications you're just taking data from a database, turning it into java objects and turning those into JSON, and applying an access control rule or two - which means the data model is logic-free, so creating it is a waste of time and. This is a …. I have one database in which there is a table called question and another table called question_answers there are 2 types of questions namely : multiple choice and single response. JSON data can be sent directly to a Mule flow. The reason you see JavaScript in the acronym is due to the fact that a JavaScript object is created when storing data with JSON. Learn to use jackson objectmapper to populate java object from json string and write json string from java object. js file may be the way to go. How to Use JSON Data with PHP or JavaScript. Questions: How can I send JSON data from Javascript in the browser, to a server and have PHP parse it there? Answers: I’ve gotten lots of information here so I wanted to post a solution I discovered. To map JSON to POJO we use ObjectMapper class which is available in com. I want to fetch the question and its answers using JSON. jackson-databind: A package that convert JSON to and from POJOs. Many modern data stores rest behind a JSON- or XML-based web services API, offering the stability and structure of time-tested, industry-proven data formats. ResultSet interface. In this blog, I will demonstrate how to retrieve the data from SQL database using jQuery AJAX in ASP. It's already used to send data to the server. JsonDB is a pure java database that stores its data as Json Files. Overview of the tutorial. An object is an unordered collection of zero or more name/value pairs. This web service retrieves the data from SQL Server. We have number of functions in jQuery to kick-off an ajax request. Complex (nested) JSON data source Like DataTables, Editor has the ability to work with virtually any JSON data source. JSON objects are easy to read and write and most of the technologies provide support for JSON objects. Using Ajax TFW You Accidentally Delete Your Database. Which brings the important question:. simple […] Vote Up 0 Vote Down Reply. These strings will contain number of Jason data value pairs taken from database table along with some other data. Remember to use an appropriate header for both sides when debugging the method (content type as well as accepts json application,look it up), Use JSONObject etc to write and read the output/input. Is there any sample code. When the user clicks on a button the async call activates, gathers the JSON container that has the data and gets the image path. An array is an ordered sequence of zero or more values. Creating JSON data in Java JSON. The PHP script will fetch data from the MySQL database and returns JSON data to Ajax.