How does springboot add a uniform request prefix to the web layer

This article mainly introduces the knowledge of "how springboot adds a unified request prefix to the web layer". The editor shows you the operation process through an actual case. The operation method is simple and fast, and it is practical. I hope this article "how to add a unified request prefix to the web layer by springboot" can help you solve the problem.

How to add a uniform request prefix profile to the web layer

Application.properties global profile configuration:

Implementing WebMvcConfigurer Interface with server.servlet.context-path=/api

Override the configurePathMatch () method, code:

@ Configurationpublic class WebMvcConfig implements WebMvcConfigurer {/ * request path with a unified prefix * * @ param configurer * / @ Override public void configurePathMatch (PathMatchConfigurer configurer) {configurer.addPathPrefix ("/ api", c-> c.isAnnotationPresent (RestController.class) | | c.isAnnotationPresent (Controller.class));}}

All of the above add a unified prefix for the controller layer. If different versions want to use different request prefixes, you can optimize them as follows:

@ Configurationpublic class WebMvcConfig implements WebMvcConfigurer {/ * request path with a unified prefix * * @ param configurer * / @ Override public void configurePathMatch (PathMatchConfigurer configurer) {configurer.addPathPrefix ("/ api", c-> c.isAnnotationPresent (ApiRestController.class)) .addPathPrefix ("/ api/v2", c-> c.isAnnotationPresent (ApiV2RestController.class));}}

Add / api prefix to controller annotated with @ ApiRestController and / api/v2 prefix to controller annotated with @ ApiV2RestController.

@ ApiRestController and @ ApiV2RestController are custom annotations, inherited from @ RestController:

Import org.springframework.core.annotation.AliasFor;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;import java.lang.annotation.*; @ Target (ElementType.TYPE) @ Retention (RetentionPolicy.RUNTIME) @ Documented@RestController@RequestMappingpublic @ interface ApiRestController {/ * * Alias for {@ link RequestMapping#name}. * / @ AliasFor (annotation = RequestMapping.class) String name () default "; / * * Alias for {@ link RequestMapping#value}. * / @ AliasFor (annotation = RequestMapping.class) String [] value () default {}; / * * Alias for {@ link RequestMapping#path}. * / @ AliasFor (annotation = RequestMapping.class) String [] path () default {};}

Use:

@ ApiRestController ("/ demo") public class DemoController extends BaseController {}

So the request address is: http://localhost:8080/api/demo

There are extra prefixes and suffixes on the spring web access page. Hello.jsp appears in the page.

Solution method

Remove the prefix and suffix configuration items in servlet

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