I have the project that has very huge legacy spring xml configuration (about 500 beans).
This configuration is too difficult to support.
The best way is convert xml to java based configuration, but it difficult to do manualy.
Is anybody known any tools for automatically convertaion Spring xml configuration to Spring java based configuration?
Related
I have a set of projects in Spring framework and I have to Find the ones which can be converted to Spring boot.
Is there anything that is related to Spring framework and cannot be converted to spring boot ? In my research, I Could not Find something like that.
But does anyone know something, like a dependency, which would force the project to stay in Spring framework ?
Spring Boot uses the Spring Framework as a foundation and improvises on it. It simplifies Spring dependencies and runs applications straight from a command line. Spring Boot provides several features to help manage enterprise applications easily. Spring Boot is not a replacement for the Spring, but it’s a tool for working faster and easier on Spring applications. It simplifies much of the architecture by adding a layer that helps automate configuration and deployment while making it easier to add new features.
Most of the changes for migrating Spring Framework application to Spring Boot are related to configurations.This migration will have minimal impact on the application code or other custom components.Spring Boot brings a number of advantages to the development.
It simplifies Spring dependencies by taking the opinionated view.
Spring Boot provides a preconfigured set of technologies/framework to reduces error-prone configuration so we as a developer focused on building our business logic and not thinking of project setup.
You really don’t need those big XML configurations for your project.
Embed Tomcat, Jetty or Undertow directly.
Provide opinionated Maven POM to simplify your configurations.
Application metrics and health check using actuator module.
Externalization of the configuration files.
Good to refer this for migrating from Spring to Spring Boot application: https://www.javadevjournal.com/spring-boot/migrating-from-spring-to-spring-boot/
I started a new Spring project without any XML configuration file. I become a big fan of annotation config. So I tried to include DWR library, which I used in my last projects. But I cannot find any tutorial, how to integrate DWR 3 in an java config spring environment.
Is this already possible, or can somebody recommend another solution where I dont have to use XML configuration files?
You can follow below two links.
Sample codes are also in the link
http://krams915.blogspot.com/2011/01/spring-mvc-3-and-dwr-3-integration.html
Spring 3 MVC integration with DWR with Annotation
I have started working on an inventory management system (web application) using Spring Framework 3.1.1** and would like to configure Spring Framework using Java annotations. I searched Google, but I could not find a suitable example showing how to configure Spring Framework using Java annotations in a web application. Where is there a proper example or tutorial?
Spring Framework references are comprehensive. Refer to the Spring reference material, 3.11 Java-based container configuration.
Another option to consider is to use Java based configuration. It is more readable, and is easier than annotations.
Spring Documentation
Simple Example using Java based configuration
I have checked a lot of different links for creating spring mvc with maven but I don't understand why everybody have different xml-files, someone create a webapp login/logout with only pom.xml and web.xml and someone else do the same thing but this one has an applicationservice.xml and an application-dispatcher.xml too. So I'm very confused what roles are and what is the best structure for spring mvc with maven (even JPA and JAX-RS and JAX-B included). How many xml-files I need for a project and so on.
Please
Anyone how have any idea about it?
Spring is about choice, lot of solutions are available. you can have zero spring xml files and configure it programmatically or put all spring configuration in several xml files (with <import> for instance). For persistence, you can create a simple META-INF/persistence.xml with mostly nothing and put all the JPA configuration in your xml spring files, or concentrate all JPA configurations in META-INF/persistence.xml.
For my projects my choice is:
One central XML file for main spring configuration (configuration of beans)
It contains lots of <import> to several other XML files wher I put dedicated configurations:
project-security.xml
project-persitence.xml (with a mostly empty META-INFO/persistence.xml
project-web.xml
...
Why Spring uses the configuration in ".xml" file format,
Is there any possibility to configure in ".properties" file?
Starting with version 3.0, and further enhanced in 3.1, Spring now has complete support for Java-based configuration.
http://static.springsource.org/spring/docs/current/spring-framework-reference/htmlsingle/#beans-java
http://static.springsource.org/spring/docs/current/javadoc-api/org/springframework/context/annotation/Configuration.html
Xml was the de-facto method of specifying configuration when Spring was in its infancy. As of spring3, it is possible to use annotations instead of xml.
However, you will still require to load the spring context first (using xml configuration file) and the rest of the spring based configuration would be loaded through the spring annotations.
Yes, you can specify the properties file separately for name-value pairs
<context:property-placeholder location="classpath:filename.properties"/>