I want to insert data in MySQL using java class file.
I know how to update by calling the .php file using HTTP.
But want I want to know is it possible to to same using java class file on server side .
Lets say I have a java application on server side which is using MySQL database to show a records .
Know I want to update database from android without calling php file but to call java class file.
Thanks in advance
For updating the server database you should use Servlet in Java and for updating the db call the Servlet
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Can an Android App connect directly to an online mysql database
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I have a website already setup which uses mysql database. I want to know how can i connect my app to that database.
What i wanna achieve is that my app should make a request to find a table of a defined "ID" or name. The table contains links to images or image names. I want the app to retrieve those images and display them on the android app.
What are the ways this can be done?
Can I use PHP to develop an android app?
Android does not support MySQL out of the box. The "normal" way to access your database would be to put a Restful server in front of it and use the HTTPS protocol to connect to the Restful front end.
Have a look at ContentProvider. It is normally used to access a local database (SQLite) but it can be used to get data from any data store.
I do recommend that you look at having a local copy of all/some of your websites data locally, that way your app will still work when the Android device hasn't got a connection. If you go down this route then a service can be used to keep the two databases in sync.
The one way is by using webservice, simply write a webservice method in PHP or any other language . And From your android app by using http client request and response , you can hit the web service method which will return whatever you want.
For PHP You can create a webservice like this. Assuming below we have a php file in the server. And the route of the file is yourdomain.com/api.php
if(isset($_GET['api_call'])){
switch($_GET['api_call']){
case 'userlogin':
//perform your userlogin task here
break;
}
}
Now you can use Volley or Retrofit to send a network request to the above PHP Script and then, actually the php script will handle the database operation.
In this case the PHP script is called a RESTful API.
You can learn all the operation at MySQL from this tutorial. Android MySQL Tutorial to Perform CRUD.
Yes you can connect your android app to your PHP to grab results from your database. Use a webservice to connect to your backend script via ASYNC task and http post requests. Check this link for more information Connecting to MySQL
Use android vollley, it is very fast and you can betterm manipulate requests.
Send post request using Volley and receive in PHP
Basically, you will create a map with key-value params for the php request(POST/GET), the php will do the desired processing and you will return the data as JSON(json_encode()). Then you can either parse the JSON as needed or use GSON from Google to let it do the parsing.
Im working with a SQLite database right now, and I've made a javaFX application (I will call it the client) that allows me to work with it, but I need to work with it remotely as well. From what I've read SQLite does not support remote acces, so I have 2 choices:
Creating another application in the server that receives input from the client through a socket, and it modifies the SQLite database. (The problem with this, is that the server is a webserver and I dont have SSH access, so I can upload the server side application on the server, but I cant start it...)
(I dont know if this works) Create a java application that runs on the server, and you load it through a browser such as chrome or firefox. From what I've seen java webstart allows you that, but I don't if the app runs on the server or on your computer (meaning that you won't have acces to the SQLite database as well).
If someone here has some knowledge on this pls share, I need to know if I can make this work, and if not, what other options I have.
I don't think SQLite is designed for that. If you use SQLite because it's small and easy, why don't you try JavaDB (derby), it is included in your JDK distribution and you can use it embedded in your app or as a database server (not both of course).
I'm new in working with databases and connecting java to sql server. I just created a database and a java application for it. I used the sqljdbc4.jar file in my library and all the stuff required to connect the app with the database, but I want to know : what do I need to export so someone in an other computer can use that application and have that database in that computer, without having installed sql server or something, what do I need to do ?
It depends on what you want to do. If you want them to connect to a databse via your app, then you will have to allow them to access the database via your application by providing the privileges. If you want to bundle the whole database with your java code, then you need to use an in application database like h2 http://www.h2database.com/html/main.html. There are alternatives like derby and hsql db, but h2 is better than that. See the comparison on the h2 homepage.
Any tutorials out there on how to send and received data to and from a MySQL database hosted on a server using cPannel? I'm trying to make an android app that connects to the internet, and it needs to read and write data to and from the hosted database. The database is a MySQL one and is hosted on godaddy. I've been on the internet all day today looking, so any help would be greatly appreciated.
Well you need to write a webservice which will get the data from your mysql database and send it to your android app.
First of all you need a server which you have already. Create space to write php scripts there to interact withe the database that is hosted there.
Second Write a php script on your server which can retrieve the required data from the MySQL database. Encode the retrieved data inside a JSON object and send it back to your app. From your app you have to call the URL where the webservice is hosted, and the php script will do the interaction with the database, retrieve the results and send it back to your app in JSON.
Third - Follow the same method to send and retrieve data to server. Create multiple webservice as per your requirements.
This tutorial excellently illustrates what you are looking for. This example uses a local server. You can skip some of the steps there. Hope it helps. URL: http://www.androidhive.info/2012/05/how-to-connect-android-with-php-mysql/
If you still got any questions, comment below. I will be happy to help.
Thanks!
I'm working now in an android application which will get the some data from MS sql database. I used jtds jar file to connect to the database, but I read that connecting to database from the application directly is not secure and I should use a web service. but I can't understand why?! .. can some one help me?
Also, I found a lot of tutorial explaining the connection using a web service using REST. But all of them depends on I have a php file then send HTTP request then parse json string. So should I create this file myself!
You should never connect to a database from within your app, because in order to do so you are embedding your database credentials in your application. Which means that anybody with a decompiler can get those credential and do what they please to your database with that.
here's an example of what happens when you do that =)
http://gamingirresponsibly.com/team-meat-learns-a-hard-lesson-by-hackers