#spring-mvc

Primeros pasos con Spring boot 2 ! paso a paso y sí (Probamos los banners animados) #springframework #springboot2 #java

Como saben la versión de Spring boot 2 fue liberada hace poco y en Geeks México ya empezamos a hacer pruebas con esta nueva versión.

Paso 1 Configuración

El primer paso será configurar nuestro proyecto, para esto tendremos que configurar los siguientes puntos:

Proyecto padre: El primer paso será agregar el proyecto padre de Spring boot 2 el cual definirá todas las versiones a utilizar en las…

Если внимательно читать документацию к аннотации RequestMapping, можно заметить очень классные, но к сожалению редко используемые параметры: params и headers.

Для себя я нашел их крайне привлекательными в случае, когда на один путь, приходиться биндить много разных обработчиков, выбирая их на основе параметров, тем самым создавая "божественные" контроллеры:

@Controller public class GodController { @RequestMapping(value="/" method = RequestMethod.GET) public String handleReq(@RequestParam String type) { switch(type) { "foo": return handleFoo(); "bar": return handleBar(); .... } } }

Данный пример такого контроллера, можно эффективно разбить на 2 разных класса/метода просто указав точное значение параметра в маппинге, тем самым делая код чище и прозрачнее:

How to: RESTful Authentication via Spring

RESTful Authentication via Spring

Problem: We have a Spring MVC-based RESTful API which contains sensitive information. The API should be secured, however sending the user’s credentials (user/pass combo) with each request is not desirable. Per REST guidelines (and internal business requirements), the server must remain stateless. The API will be consumed by another server in a mashup-style…

Fixed What's the difference between @Component, @Repository & @Service annotations in Spring? #dev #it #asnwer

What’s the difference between @Component, @Repository & @Service annotations in Spring?

Can @Component, @Repository & @Service annotations be used interchangeably in Spring or do they provide any particular functionality besides acting as a notation device?

In other words, if I have a Service class and I change the annotation from @Service to @Component, will it still behave the same way?

Or…

How to: How does autowiring work in spring?

How does autowiring work in spring?

I’m a little confused as to how the IOC works in spring.

Say I have a service class called UserServiceImpl that implements UserService interface.

How would this be auto-wired?

And in my Controllers action, how would I instantiate an instance of this service?

Would I just do:

UserService userService = new UserServiceImpl();

Answer: How does autowiring work in…

How to: What is @ModelAttribute in Spring MVC?

What is @ModelAttribute in Spring MVC?

What is the purpose and usage of @ModelAttribute in Spring MVC?

Answer: What is @ModelAttribute in Spring MVC?

@ModelAttribute refers to a property of the Model object (the M in MVC ;) so let’s say we have a form with a form backing object which is called “Person” Then you can have Spring MVC supply this object to a Controller method by using the @ModelAtt…

How to: Spring MVC 3 and handling static content – am I missing something?

Spring MVC 3 and handling static content – am I missing something?

I am developing a webapp using Spring MVC 3 and have the DispatcherServlet catching all requests to ‘/’ like so (web.xml):

app org.springframework.web.servlet.DispatcherServlet app /

How to: What's the difference between @Component, @Repository & @Service annotations in Spring?

What’s the difference between @Component, @Repository & @Service annotations in Spring?

Can @Component, @Repository & @Service annotations be used interchangeably in Spring or do they provide any particular functionality besides acting as a notation device?

In other words, if I have a Service class and I change the annotation from @Service to @Component, will it still behave the same way?

Or…