I have been reading how to make web application using spring from the Getting Started Guides, specifically the following guides:
Serving Web Content with Spring MVC
Accessing Data with JPA
But I could not figure how the JPA selected which database driver to store data into.
How can I connect to MySQL database in Spring + JPA.
I learned about Spring + Java Annotations (No XML configurations)
The guides you mention all use Spring Boot.
Spring Boot is a new Spring project that is used for bootstrapping Spring projects. In your case it will auto-configure the datasource for you. Specifically if you have H2 or HSQL on the classpath, Spring will create that in-memory database.
You can easily override the defaults provided by Spring Boot by adding the following properties to application.properties:
spring.datasource.url=jdbc:mysql://whateverhost/whateverdbname
spring.datasource.username=dbuser
spring.datasource.password=dbpass
spring.datasource.driverClassName=com.mysql.jdbc.Driver
For more information check out the relevant documentation.
Or you can check out this tutorial
Related
We are in the initial stages of converting a Struts 1.2.9 application to Spring MVC. While the impact has been analyzed and well documented and understood for this migration, we are uncertain if we should introduce Spring Boot in this equation.
I have been reading other threads and would like to state that we are not looking to integrate Struts with Spring - rather we are for sure migrating and moving out of Struts to Spring MVC.
Given this background, invite suggestions/thoughts around below:
Benefit of introducing Spring Boot in this process is more of a distant one of an eventual move to Cloud. As such the team has completed the initial configuration required for a Spring application (like web.xml, required jars, spring-servlet.xml) and not sure of immediate benefits for us.
In case we decide to use Spring Boot in this process, we perceive the impact to be:
i. Add spring-boot-starter-web to our gradle build.
ii. Create a starter Application class
iii. Revisit configurations in web.xml like startup servlets using 'SpringBootServletInitializer'
iv. Continue to use a war based traditional deployment using gradle war plugin. Does this package the spring based libraries into the war or should the libraries be on the server classpath?
I welcome thoughts/suggestions/rejections of this as an approach itself :).
I am working on a project using spring integration. I am using XML because I like the visualization of integration flow using Integration-Graph in STS. But because of reusing components and reorganisation flows in subflows in separate xml files, I would like to have a merged view in the graph.
As I remember the Spring Bean Graph it was possible to select configuration files as package for visualisations.
Is there a functionality for Integration, too?
While that feature is not available in STS, we are working on a runtime visualization of a running Spring Integration application. Since 4.3, Spring Integration (when running in a web container or as a Spring Boot application with web support), can expose the runtime environment as JSON see documentation here.
The spring-flo project has a sample (it's still a work-in-process) for visualizing the flow.
The application used in the readme is the the file-split-ftp sample application. Notice the required CORS bean definition (which will be made simpler in the next release).
Is it possible to use Spring Data Rest/HATEOAS without Spring Boot, Spring MVC on an persistence storage based application. If so how can this be done?
The short answer is Yes. This has been around even before Spring Boot.
The important thing is to ensure the API jars are on your classpath. Get the latest release of Hateoas here and latest release of Spring Data JPA here and add to the classpath. Just pick from the setup you are using (e.g., Maven, Gradle).
I have written a Spring web app for baseball umpires using Spring Boot and Thymeleaf. I like Spring Boot because it resolves dependency w/o a lot of configuration. Now I want to add Sprng WebFlow so umpires can order uniforms, a typical "shopping cart" application. There are many examples on the web but none using Spring Boot. They all are the traditional xml config with jsp and jstl. Has anyone used Spring Boot and WebFlow? There are WebFlow examples on the official Spring web site but very complicated. Thanks Rob
Spring Roo 2.0.0.M3 generates Spring Boot applications and integrates Spring Web Flow easier than ever.
The reference guide includes detailed descriptions of all the features, plus an extensive user guide for main use cases.
I have web app which is already developed based on Spring MVC. I need to re-implement that web app in Mule.
Can I develop the mule application based on Spring MVC?
Can I declare the Spring MVC dispatcher servlet inside a mule's servlet endpoint and take things further from there?
The web app has web.xml where it defines the DispatcherServlet, the contextparams, the listener classes and so on. How can we remodel that in a mule application?
Any examples where a mule application is developed based on SpringMVC would be great.
Thanks to its embedded Jetty container, you can deploy any JavaEE web application in Mule. So there's no need to remodel anything.
The "Boosktore" example application demonstrates running web-apps within Mule: https://github.com/mulesoft/mule/tree/mule-3.x/examples/bookstore
Mule ESB is not an MVC Framework. It is developed using enterprise integration patterns in mind.
Please go through this blog, to know when to use ESB.
spring mvc can be integrated with mule.
Define all your spring related configuration in separate xml file and include it in mule configuration file.
You can write your custom transformers ,in the custom transformations you can inject or do an autowire of your service classes and from service object you can interact with dao layers.