Guys i need to develop a JAVA web service which reads data from a HTML form and stores the data into the MYSQL database. i have no idea about how to achieve this. Can someone give me a detailed step by step explanation as to how i should proceed.
i know i can do it using servlets. But my requirement is that it has to be done only through a web service
So , first of all you have to create a structure like this :
DAO for storing and retrieving data from DB
Web Service exposes methods to save datas (simply calling dao and passing data)
Your web app with html form. Submitting your form you have to call a servlet to manage received data. On this servlet simply call the web service client.
Take a look at this : https://netbeans.org/kb/docs/websvc/jax-ws.html if this is your first web service
Related
I'm learning REST connector in data factory , I'm trying to create a linked services with REST, but it needs to provide base URL ,I wonder where I can get this.
We can use many programe languages to build a REST Service. When you have permission to access this api, it will return a json object or json object array.
For example, using Spring to build a RESTful Web Service. In this case, http://localhost:8080/ is your base url. If your domain is localhost, you need to use self-hosted-integration-runtime to connect to your local server.
im planning to develop a webapplication using java and HTML implementing as REST Services and confused how ot start with what technologies..
As a First step my first requirement is just creating a login HTML page and create REST SERVICE for LOGIN which validates the user by connecting to Database and generates a session and next page say shopping page.
Please suggest the Java jars,ide, etc to start.
Sorry, your problem is very complex.
To make a website such as shopping page, you can write code with REST services or no need.
If REST Services is used, you must build and setup 2 system/application: web app & server app. (front-end & back-end). With any system/app, you need technologies its own.
To done, you must know many knowledges such as:
API, Rooter, OOP, MVC, how to connect DB,...
There are many IDE such as Eclipse,... or only need a Editor with a few plugin.
Regardless of whether I create a RESTful Web service to be consumed by Ajax in my own pages, or by any user, I can provide the same functionality (data) to the application or user using a simple servlet.
I mean the user or application don't see any different between response provided by a simple servlet or respone provided by a RESTful web service. So, I'm guessing that the benefit is on the server side and to the developers. Can someone please tell me what are the benefits of using RESTful web services.
I appreciate any respone
By definition a webservice is intended to be consumed by any client granted access. If the client you are developing is the only application that you will ever need or want to access the resource then there is little benefit to creating a webservice. However, if you want to make the resource available as a service endpoint for more than just this application in a way that is implementation agnostic then a Restful webservice is a great way of doing it.
I have implemented a REST based web service and used it to access data back in MySQL database.
I am using this framework to access the json data http://code.google.com/p/json-framework/
I have no problems in getting the content from this web service, but how can I put something in the database? Should I just make a special query string and have the php code in the backend to interpret this special keyword/query string as an insert to the database?
You're looking for ASIHTTPRequest. You can use that for everything from dumping pages to submitting data via POST or FORM.
Have fun :)
POST is a HTTP method. Your web service should behave differently depending on the method used for the request, if you're implementing REST.
If you send a POST request, your web service should inspect the parameters and do what it needs to do.
What parameters you send and how is dependent on how you've written the web service. Ie. Is the web service expecting XML requests or JSON or URL parameters?
what are web services(Rmi,ejb,soap)? what is the difference between web services and web application? Is it possible to implement web services in web application?
A web service is a way to transmit/expose information in such a way that a Web Service client, which can created in a server script or from a stand-alone program, can call the service for what it wants using methods and functions defined by the service.
One of the benefits of a web service is that it abstracts these methods and functions (and variable types) in such a way that any language that "speaks" web services can use it's own syntax to interface with the service (thus making it cross-language).
Another benefit is that it uses the HTTP protocol (usually transmitting via XML or JSON, but not necessarily either), so it's also cross-platform.
A huge benefit is that an application that typically requires very specific knowledge and software can "expose" information via a web-service. So if you're corporate mainframe has tons of top-secret data that typically requires a terminal client, etc, to get data, certain data can be accessed via a Web Service so that you can have your HR department download and upload timesheet changes from a web site.
A web app can certainly include a web service, but they are not the same thing. You can make a web service using PHP or .NET, and then have a web app written in either language interface with that service, but a web app tends to be an interface for the site you're on, while a web service is about getting info to and from other apps (web or not).
web app is user interface, access by humans, user can browse data , can submit and retrieve data. All user interactivity (the GUI) is done through web pages, but all data is stored and manipulated on the server.
Web service server-based application and meant for interaction with other programs.
A web service is a way to expose some business logic you have over the internet. Say you got a module that connects to the database and does something. You can let other applications on the internet use this module of yours via web services. Web services uses SOAP over HTTP to invoke the request and retrieve the response in XML.
Web application - Person-to-server with HTTP, HTML
Web service - Server-to-server with HTTP, SOAP, XML