Shulou(Shulou.com)06/02 Report--

This article mainly explains the "spring security default landing page source code analysis", the article explains the content is simple and clear, easy to learn and understand, the following please follow the editor's ideas slowly in-depth, together to study and learn "spring security default login page source code analysis" bar!

Springboot project dependency

Org.springframework.boot spring-boot-starter-web org.springframework.boot spring-boot-starter-security

Write an interface at random in the project, and then access it

@ GetMapping ("/") public String hello () {return "hello, spring security";}

Access the interface under the tomcat default port 8080 localhost 8080, and spring security will help us redirect the path to the default login page

So how did this default page come from?

It turned out that Spring Security had a default WebSecurityConfigurerAdapter, and found that there was an init method in it, so it hit a breakpoint and tracked it when the application started.

Trace the getHttp () method, and the this.disableDefaults variable defaults to false, which means that the applyDefaultConfiguration (this.http); method will be executed. View the applyDefaultConfiguration method

Public void init (WebSecurity web) throws Exception {/ / first configure which http requests to be intercepted by security HttpSecurity http = getHttp (); web.addSecurityFilterChainBuilder (http). PostBuildAction (()-> {FilterSecurityInterceptor securityInterceptor = http.getSharedObject (FilterSecurityInterceptor.class); web.securityInterceptor (securityInterceptor);});} protected final HttpSecurity getHttp () throws Exception {if (this.http! = null) {return this.http } AuthenticationEventPublisher eventPublisher = getAuthenticationEventPublisher (); this.localConfigureAuthenticationBldr.authenticationEventPublisher (eventPublisher); AuthenticationManager authenticationManager = authenticationManager (); this.authenticationBuilder.parentAuthenticationManager (authenticationManager); Map

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.