Solved

Spring, Servlet web project Integration approaches

Posted on 2011-09-08
1
264 Views
Last Modified: 2012-05-12

i was reading about
Spring, Servlet web project Integration approaches
Approach 1:
         Create web project then add spring capablities by making sure applicationContext.xml file is in WEB-INF folder. Then Create servlet program. Configure dao to access the database.Introduce spring container by Creating singleton class of ApplicationContext as it should be started only once as all beans should be available to servlets.

Approach 2:
ServletContext object is created per application as a singleton object.When ServletContext object is created, listeners are invoked.
 configure Spring container which is started when  application is started which depends on your ServletContext listener by Saving instance of ApplicationContext in ServletContext object as attribute
          I would liek to know which approach is better which one we use where, advantages, disadvantages of each one. I was not clear on this concept. thanks in advance
0
Comment
Question by:gudii9
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 21

Accepted Solution

by:
Amitkumar Panchal earned 500 total points
ID: 36929928
Hi,

Follow the Approach 2. Refer the section 15.2 Common configurations in http://static.springsource.org/spring/docs/2.5.x/reference/web-integration.html

Comments regarding Approach 1:

- you should have this single servlet
- it should be stateless except for the context
- you should have only one instances of this servlet (specifiable in the web.xml)
- you might have integration problems with other parts of the Spring infrastructure or with examples which relies on the application context maintained in a particular place in the servlet context AND that they expect the application context to be of the type org.springframework.web.context.WebApplicationContext
- You need to close the application context in the destroy method of the servlet.
0

Featured Post

Get 15 Days FREE Full-Featured Trial

Benefit from a mission critical IT monitoring with Monitis Premium or get it FREE for your entry level monitoring needs.
-Over 200,000 users
-More than 300,000 websites monitored
-Used in 197 countries
-Recommended by 98% of users

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

For beginner Java programmers or at least those new to the Eclipse IDE, the following tutorial will show some (four) ways in which you can import your Java projects to your Eclipse workbench. Introduction While learning Java can be done with…
Are you developing a Java application and want to create Excel Spreadsheets? You have come to the right place, this article will describe how you can create Excel Spreadsheets from a Java Application. For the purposes of this article, I will be u…
Viewers learn about the “while” loop and how to utilize it correctly in Java. Additionally, viewers begin exploring how to include conditional statements within a while loop and avoid an endless loop. Define While Loop: Basic Example: Explanatio…
Viewers learn about the scanner class in this video and are introduced to receiving user input for their programs. Additionally, objects, conditional statements, and loops are used to help reinforce the concepts. Introduce Scanner class: Importing…

688 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question