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Tag Archives: Spring MVC

Spring WebApplicationInitializer and ApplicationContextInitializer confusion

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These are two concepts that I mix up occasionally – a WebApplicationInitializer and an ApplicationContextInitializer, and wanted to describe each of them to clarify them for myself. I have previously blogged about WebApplicationInitializer here. It is relevant purely in a Servlet 3.0+ spec compliant servlet container and provides a hook to programmatically configure the servlet context. How does this help ...

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Customizing HttpMessageConverters with Spring Boot and Spring MVC

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Exposing a REST based endpoint for a Spring Boot application or for that matter a straight Spring MVC application is straightforward, the following is a controller exposing an endpoint to create an entity based on the content POST’ed to it:                 @RestController @RequestMapping("/rest/hotels") public class RestHotelController { .... @RequestMapping(method=RequestMethod.POST) public Hotel create(@RequestBody @Valid ...

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Validation groups in Spring MVC

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Validation constraints in Bean Validation may be added to one or more groups via groups attribute. This allows you to restrict the set of constraints applied during validation. It can be handy in cases where some groups should be validated before others like e.g. in wizards. As of Spring MVC 3.1, automatic validation utilizing validation groups is possible with org.springframework.validation.annotation.Validated ...

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Common mistakes when using Spring MVC

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 When I started my career around 10 years ago, Struts MVC was the norm in the market. However, over the years, I observed the Spring MVC slowly gaining popularity. This is not a surprise to me, given the seamless integration of Spring MVC with Spring container and the flexibility and extensibility that it offers. From my journey with Spring so ...

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Better error messages with Bean Validation 1.1 in Spring MVC application

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Bean Validation 1.1, among many new features, introduced error message interpolation using Unified Expression Language (EL) expressions. This allows to define error messages based on conditional logic and also enables advanced formatting options. Added to a Spring MVC application let you display more friendly error messages quite simply. In the first part of this article I will shortly describe message ...

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RSS Reader Using: ROME, Spring MVC, Embedded Jetty

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In this post I will show some guidelines to create a Spring web application, running it using Jetty and using an external library called ROME for RSS reading. General I have recently created a sample web application that acts as an RSS reader. I wanted to examine ROME for RSS reading. I also wanted to create the application using Spring ...

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Spring MVC and Thymeleaf: how to acess data from templates

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In a typical Spring MVC application, @Controller classes are responsible for preparing a model map with data and selecting a view to be rendered. This model map allows for the complete abstraction of the view technology and, in the case of Thymeleaf, it is transformed into a Thymeleaf VariablesMap object that makes all the defined variables available to expressions executed ...

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