spring controlleradvice

@ControllerAdvice, a new annotation provided by spring3.2, can be seen in the name of the general meaning of controller enhancement. Let us first look at the implementation of @controlleradvice:Java code @Target (Elementtype.type) @Retention (Retentionpolicy.runtime) @Documented @Component Public @interface Controlleradvice { } Nothing special, the annotations use @com

-5.0.6. Release.jar:5.0.6. RELEASE] at Org.springframework.web.servlet.FrameworkServlet.processRequest (Frameworkservlet.java:974) ~[spring-webmvc-5.0.6. Release.jar:5.0.6. RELEASE] at Org.springframework.web.servlet.FrameworkServlet.doGet (Frameworkservlet.java:866) ~[spring-webmvc-5.0.6. Release.jar:5.0.6. RELEASE] at Javax.servlet.http.HttpServlet.service (Httpservlet.java:635) ~[tomcat-embed-core-8.5. t

Controller responsebody Restcontroller Controlleradvice restcontrolleradvice @Controller @Target ({elementtype.type}) @Retention (retentionpolicy.runtime) @Documented @Component public @ Interface Controller { /** * The value may indicate a suggestion for a logical component name, * to be turned into a Spring bean in the case of a autodetected component. * @return The suggested component

, the other two are not very helpful.Next look at the snippet code:Java code @ControllerAdvice Public class Controlleradvicetest { @ModelAttribute Public User NewUser () { System.out.println ("============ applies to all @requestmapping annotation methods and puts the return value into model before it executes"); return new User (); } @InitBinder public void Initbinder (Webdatabinder binder) { System.out.println ("======

The first step: Dispatcher Front controller of the source code in the defaultPrivate Boolean Throwexceptionifnohandlerfound = False, indicating that if no matching executor is found, no exception is thrown handler not found, so the 404 exception is to be captured if this property is to be changed to TrueYou can use the configuration of Web. XML Dispatcher This parameter is true for specific configuration parameters, please Baidu, here does not elaborateStep Two: Create a new class, add @

First of all. Using Controlleradvice alone does not work correctly. Need to be used in conjunction with @enablewebmvc.@ControllerAdvice@EnableWebMvcPulbic class exceptioncontrolleradvice{ 　　@ExceptionHandler (notfoundexception. class) 　　@ResponseBodyPublic map.......}}Exception handling Error in startup.Error message:July 04, 2016 11:00:11 am org.springframework.web.servlet.mvc.method.annotation.ExceptionH

the uploaded file to be obtained 3.19. Uricomponentsbuilder and uricomponents Spring 3.2-new Features 4.1. Support for Servlet 3 based Asynchronous request processing4.2. Spring MVC Test Framework-First-class support for testing Spring MVC applications with a fluent API and without a Servlet container. Server-side tests involve use the "dispatcherservlet while

When we are doing Web applications, it is very common for errors to occur during request processing. Spring Boot provides a default mapping: When an exception is thrown in processing, it is /error forwarded to the request for processing, and the request has a global error page to display the exception content.Choose a previously implemented web App (Chapter3-1-2) to start the app, access a nonexistent URL, or modify the processing to throw an exceptio

it as a spring bean.@RequestMapping: You can annotate Web requests (access paths and parameters) on classes and methods@RequestMapping (value= "/convert", produces+{"application/x-wisely"}) set the Access URL return value type@ResponseBody: Supports putting the return value into response instead of returning a page (a group of data is returned)@RequestBody: The request parameter is allowed in the request body instead of directly attached to the addre

duplicatespittleexception approach to all the controllers of the entire application. The following list of programs showsAppwideexceptionhandler can accomplish this task, which is a class with @ControllerAdvice annotations.4. Redirect and forwardIn the view name returned by the Controller method, we use the power of the "redirect:" prefix. When the Controller method returns a String value that starts with "redirect:", then this String is not used to

Spring Boot series (iii) Spring boot common annotations @RestController and @requestmapping @RestController is called a stereotype (stereotype) annotation. It provides suggestions for developers who read the code. For spring, this class plays a special role. It inherits from @controller annotations. Prior to 4.0, Spring