Spring Security usage memo: Cooperation with Spring MVC and Boot

Basic and mechanical story Authentication / Authorization Story Remember-Me story CSRF story Session management story The story of the response header Method security story CORS story The story of Run-As The story of ACL Test story

Extra edition What Spring Security can and cannot do

How to use Spring Security with Spring MVC and Spring Boot, and so on.

Cooperation with Spring MVC

Request path Matcher

First try to integrate normally

build.gradle

apply plugin: 'war'

sourceCompatibility = '1.8'
targetCompatibility = '1.8'
compileJava.options.encoding = 'UTF-8'

repositories {
    mavenCentral()
}

dependencies {
    compile 'org.springframework.security:spring-security-web:4.2.3.RELEASE'
    compile 'org.springframework.security:spring-security-config:4.2.3.RELEASE'
    compile 'org.springframework:spring-webmvc:4.3.10.RELEASE'
}

--Added spring-webmvc to dependencies

MyMvcController.java

package sample.spring.security.mvc;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class MyMvcController {
    
    @GetMapping("/foo")
    public String foo() {
        return "FOO!!";
    }
}

--Controller class that returns " FOO !! " when a GET request comes to / foo

namespace

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee 
         http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">
    
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>
            /WEB-INF/mvc.xml
            /WEB-INF/security.xml
        </param-value>
    </context-param>

    <filter>
        <filter-name>springSecurityFilterChain</filter-name>
        <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
    </filter>

    <filter-mapping>
        <filter-name>springSecurityFilterChain</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <servlet>
        <servlet-name>mvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value></param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>mvc</servlet-name>
        <url-pattern>/*</url-pattern>
    </servlet-mapping>
</web-app>

--Define Spring Security DelegatingFilterProxy and Spring MVC DispatcherServlet respectively --Specify /WEB-INF/mvc.xml and /WEB-INF/security.xml as Spring MVC and Security configuration files

security.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:sec="http://www.springframework.org/schema/security"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="
         http://www.springframework.org/schema/beans
         http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
         http://www.springframework.org/schema/security
         http://www.springframework.org/schema/security/spring-security.xsd">
    
    <sec:http>
        <sec:intercept-url pattern="/foo" access="isAuthenticated()" />
        <sec:form-login />
    </sec:http>

    <sec:authentication-manager />
</beans>

--Spring Security settings --Authentication is required to access / foo

mvc.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="
         http://www.springframework.org/schema/beans
         http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
         http://www.springframework.org/schema/mvc
         http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <mvc:annotation-driven />
    
    <bean class="sample.spring.security.mvc.MyMvcController" />
    
</beans>

--Settings for Spring MVC

Java Configuration

MySecurityInitializer.java

package sample.spring.config;

import org.springframework.security.web.context.AbstractSecurityWebApplicationInitializer;

public class MySecurityInitializer extends AbstractSecurityWebApplicationInitializer {
}

--Class for applying Spring Security Filter --In the case of Spring Security alone, the setting class was passed to the constructor of the parent class here, but when integrated with MVC, it is moved to ʻInitializer` for MVC.

MyServletInitializer.java

package sample.spring.config;

import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;

public class MyServletInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {
    
    @Override
    protected Class<?>[] getRootConfigClasses() {
        return new Class[] {MySecurityConfig.class, MyMvcConfig.class};
    }

    @Override
    protected Class<?>[] getServletConfigClasses() {
        return new Class[] {};
    }
    
    @Override
    protected String[] getServletMappings() {
        return new String[] {"/"};
    }
}

--Initialization class for Spring MVC --Both the MVC setting (MyMvcConfig) and the Security setting (MySecurityConfig) are set as the root of the application (I don't know why, but otherwise mvcMatchers, which will be described later, will not work. T)

MySecurityConfig.java

package sample.spring.config;

import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;

@EnableWebSecurity
public class MySecurityConfig extends WebSecurityConfigurerAdapter {

    @Override
    public void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
            .antMatchers("/foo").authenticated()
            .and()
            .formLogin();
    }
}

--Spring Security configuration class --Requests to / foo require authentication

MyMvcConfig.java

package sample.spring.config;

import org.springframework.context.annotation.Bean;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping;
import sample.spring.security.mvc.MyMvcController;

@EnableWebMvc
public class MyMvcConfig extends WebMvcConfigurerAdapter {

    @Bean
    public MyMvcController myMvcController() {
        return new MyMvcController();
    }

    @Bean
    public RequestMappingHandlerMapping requestMappingHandlerMapping() {
        return new RequestMappingHandlerMapping();
    }
}

--Settings for Spring MVC --Registering the controller

Operation check

First, the request is sent to / foo, and then the request is sent to /foo.html.

$ curl http://localhost:8080/namespace/foo -i
HTTP/1.1 302 Found
Server: Apache-Coyote/1.1
Cache-Control: no-cache, no-store, max-age=0, must-revalidate
Pragma: no-cache
Expires: 0
X-XSS-Protection: 1; mode=block
X-Frame-Options: DENY
X-Content-Type-Options: nosniff
Set-Cookie: JSESSIONID=0AD6574E5F43053B42E5C9926535AC0E; Path=/namespace/; HttpOnly
Location: http://localhost:8080/namespace/login
Content-Length: 0
Date: Mon, 31 Jul 2017 13:05:03 GMT


$ curl http://localhost:8080/namespace/foo.html -i
HTTP/1.1 200 OK
Server: Apache-Coyote/1.1
Cache-Control: no-cache, no-store, max-age=0, must-revalidate
Pragma: no-cache
Expires: 0
X-XSS-Protection: 1; mode=block
X-Frame-Options: DENY
X-Content-Type-Options: nosniff
Content-Disposition: inline;filename=f.txt
Content-Type: text/plain;charset=ISO-8859-1
Content-Length: 5
Date: Mon, 31 Jul 2017 13:05:06 GMT

FOO!!

In the case of / foo, I was prompted to redirect to the login screen, but in the case of /foo.html, the controller implementation was called normally.

Why this happens

--Spring MVC will match paths with extensions such as /foo.html depending on the settings when mapping the path / foo to the controller. --This behavior itself is intended to make it easy to implement a type of API that specifies switching between response formats by extension. --Both /foo.html and /foo.json are mapped to the same controller method --However, since Spring Security specifies the path in Ant format, requests for paths other than / foo will be bypassed.

RequestMatcher for Spring MVC

--To address this issue, Spring Security provides Matcher, which matches paths with the same logic as Spring MVC's path matching process.

namespace

security.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:sec="http://www.springframework.org/schema/security"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="
         http://www.springframework.org/schema/beans
         http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
         http://www.springframework.org/schema/security
         http://www.springframework.org/schema/security/spring-security.xsd">
    
    <sec:http request-matcher="mvc">
        <sec:intercept-url pattern="/foo" access="isAuthenticated()" />
        <sec:form-login />
    </sec:http>

    <sec:authentication-manager />
</beans>

--Specify mvc in request-matcher of <http> tag

Java Configuration

MySecurityConfig.java

package sample.spring.config;

import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;

@EnableWebSecurity
public class MySecurityConfig extends WebSecurityConfigurerAdapter {

    @Override
    public void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
            .mvcMatchers("/foo").authenticated()
            .and()
            .formLogin();
    }
}

--Use mvcMatchers () instead of ʻantMatchers () `

Operation check

$ curl http://localhost:8080/namespace/foo -i
HTTP/1.1 302 Found
Server: Apache-Coyote/1.1
Cache-Control: no-cache, no-store, max-age=0, must-revalidate
Pragma: no-cache
Expires: 0
X-XSS-Protection: 1; mode=block
X-Frame-Options: DENY
X-Content-Type-Options: nosniff
Set-Cookie: JSESSIONID=0322DCB394ED74B38CCA600DDEF8CBBF; Path=/namespace/; HttpOnly
Location: http://localhost:8080/namespace/login
Content-Length: 0
Date: Mon, 31 Jul 2017 13:07:48 GMT


$ curl http://localhost:8080/namespace/foo.html -i
HTTP/1.1 302 Found
Server: Apache-Coyote/1.1
Cache-Control: no-cache, no-store, max-age=0, must-revalidate
Pragma: no-cache
Expires: 0
X-XSS-Protection: 1; mode=block
X-Frame-Options: DENY
X-Content-Type-Options: nosniff
Set-Cookie: JSESSIONID=BE049E9C138392A8751351762B200D63; Path=/namespace/; HttpOnly
Location: http://localhost:8080/namespace/login
Content-Length: 0
Date: Mon, 31 Jul 2017 13:07:49 GMT

This time, even if I added .html, I was skipped to the login screen.

Receive the current principal as a controller argument

Implementation

MyMvcController.java

package sample.spring.security.mvc;

import org.springframework.security.core.annotation.AuthenticationPrincipal;
import org.springframework.security.core.userdetails.User;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class MyMvcController {
    
    @GetMapping("/user")
    public String foo(@AuthenticationPrincipal User user) {
        System.out.println("username=" + user.getUsername() + ", authorities=" + user.getAuthorities());
        return "User!!";
    }
}

namespace

mvc.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="
         http://www.springframework.org/schema/beans
         http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
         http://www.springframework.org/schema/mvc
         http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <mvc:annotation-driven>
        <mvc:argument-resolvers>
            <bean class="org.springframework.security.web.method.annotation.AuthenticationPrincipalArgumentResolver" />
        </mvc:argument-resolvers>
    </mvc:annotation-driven>
    
    <bean class="sample.spring.security.mvc.MyMvcController" />
    
</beans>

security.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:sec="http://www.springframework.org/schema/security"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="
         http://www.springframework.org/schema/beans
         http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
         http://www.springframework.org/schema/security
         http://www.springframework.org/schema/security/spring-security.xsd">
    
    <sec:http request-matcher="mvc">
        <sec:intercept-url pattern="/login" access="permitAll" />
        <sec:intercept-url pattern="/**" access="isAuthenticated()" />
        <sec:form-login />
        <sec:logout />
    </sec:http>

    <sec:authentication-manager>
        <sec:authentication-provider>
            <sec:user-service>
                <sec:user name="foo" password="foo" authorities="GENERAL_USER, ADMINISTRATOR" />
            </sec:user-service>
        </sec:authentication-provider>
    </sec:authentication-manager>
</beans>

Java Configuration

MyMvcConfig.java remains unchanged

MySecurityConfig.java

package sample.spring.config;

import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;

@EnableWebSecurity
public class MySecurityConfig extends WebSecurityConfigurerAdapter {

    @Override
    public void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
            .mvcMatchers("/login").permitAll()
            .anyRequest().authenticated()
            .and()
            .formLogin();
    }

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.inMemoryAuthentication()
            .withUser("foo")
            .password("foo")
            .authorities("GENERAL_USER", "ADMINISTRATOR");
    }
}

Operation check

Access with a browser, log in as the foo user, and then access / user.

Server console output

username=foo, authorities=[ADMINISTRATOR, GENERAL_USER]

Description

MyMvcController.java

import org.springframework.security.core.annotation.AuthenticationPrincipal;
import org.springframework.security.core.userdetails.User;

...

    @GetMapping("/user")
    public String foo(@AuthenticationPrincipal User user) {
        System.out.println("username=" + user.getUsername() + ", authorities=" + user.getAuthorities());
        return "User!!";
    }

--You can receive the object returned by ʻAuthentication.getPrincipal () in the controller argument. --Annotate the argument with @AuthenticationPrincipal --Argument resolution is done by ʻAuthenticationPrincipalArgumentResolver provided by Spring Security.

mvc.xml

    <mvc:annotation-driven>
        <mvc:argument-resolvers>
            <bean class="org.springframework.security.web.method.annotation.AuthenticationPrincipalArgumentResolver" />
        </mvc:argument-resolvers>
    </mvc:annotation-driven>

--If you are using namespace, you need to specify ʻAuthenticationPrincipalArgumentResolver in . --If you are using Java Configuration, this setting is done automatically by using @EnableWebSecurity`, so no additional settings are required.

Receive CSRF tokens

Implementation

MyMvcController.java

package sample.spring.security.mvc;

import org.springframework.security.web.csrf.CsrfToken;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class MyMvcController {
    
    @GetMapping("/csrf")
    public String foo(CsrfToken token) {
        System.out.println("token=" + token.getToken() + ", headerName=" + token.getHeaderName() + ", parameterName=" + token.getParameterName());
        return "CSRF!!";
    }
}

namespace

mvc.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="
         http://www.springframework.org/schema/beans
         http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
         http://www.springframework.org/schema/mvc
         http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <mvc:annotation-driven>
        <mvc:argument-resolvers>
            <bean class="org.springframework.security.web.method.annotation.CsrfTokenArgumentResolver" />
        </mvc:argument-resolvers>
    </mvc:annotation-driven>
    
    <bean class="sample.spring.security.mvc.MyMvcController" />
    
</beans>

security.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:sec="http://www.springframework.org/schema/security"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="
         http://www.springframework.org/schema/beans
         http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
         http://www.springframework.org/schema/security
         http://www.springframework.org/schema/security/spring-security.xsd">
    
    <sec:http request-matcher="mvc">
        <sec:intercept-url pattern="/**" access="permitAll" />
        <sec:form-login />
        <sec:csrf />
    </sec:http>

    <sec:authentication-manager />
</beans>

Java Configuration

MyMvcConfig is unchanged

MySecurityConfig.java

package sample.spring.config;

import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;

@EnableWebSecurity
public class MySecurityConfig extends WebSecurityConfigurerAdapter {

    @Override
    public void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
            .mvcMatchers("/**").permitAll()
            .and()
            .formLogin()
            .and()
            .csrf();
    }
}

Execution result

Access / csrf

Server console output

token=bcac7b2e-f2c0-424c-a563-4b957ff7133e, headerName=X-CSRF-TOKEN, parameterName=_csrf

Description

MyMvcController.java

import org.springframework.security.web.csrf.CsrfToken;

...
    
    @GetMapping("/csrf")
    public String foo(CsrfToken token) {
        System.out.println("token=" + token.getToken() + ", headerName=" + token.getHeaderName() + ", parameterName=" + token.getParameterName());
        return "CSRF!!";
    }

--CSRF tokens can be received in controller method arguments --Tokens can be obtained as CsrfToken instances

mvc.xml

    <mvc:annotation-driven>
        <mvc:argument-resolvers>
            <bean class="org.springframework.security.web.method.annotation.CsrfTokenArgumentResolver" />
        </mvc:argument-resolvers>
    </mvc:annotation-driven>

--In the case of namespace, CsrfTokenArgumentResolver must be specified in<argument-resolvers>in order to receive CsrfToken as an argument. --In the case of Java Configuration, if you use @EnableWebSecurity, it will be registered automatically, so no additional settings are required.

Cooperation with Spring Boot

Hello World Implementation

build.gradle

buildscript {
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath 'org.springframework.boot:spring-boot-gradle-plugin:1.5.6.RELEASE'
    }
}

apply plugin: 'java'
apply plugin: 'spring-boot'

sourceCompatibility = '1.8'
targetCompatibility = '1.8'
compileJava.options.encoding = 'UTF-8'

repositories {
    mavenCentral()
}

dependencies {
    compile 'org.springframework.boot:spring-boot-starter-web'
    compile 'org.springframework.boot:spring-boot-starter-security'
}

Main.java

package sample.boot;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class Main {

    public static void main(String[] args) {
        SpringApplication.run(Main.class, args);
    }
}

src/main/resources/static/hello.html

<!doctype html>
<html>
    <head>
        <meta charset="UTF-8" />
        <title>Hello Spring Security with Spring Boot</title>
    </head>
    <body>
        <h1>Hello Spring Security!!</h1>
    </body>
</html>

** Operation check **

$ gradle bootRun
The plugin id 'spring-boot' is deprecated. Please use 'org.springframework.boot' instead.
:compileJava
:processResources
:classes
:findMainClass
:bootRun

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::        (v1.5.6.RELEASE)

2017-08-02 22:55:17.710  INFO 13608 --- [           main] sample.boot.Main                         : Starting Main on .....
 with PID 13608 (...\spring-boot-security\build\classes\main started by .... in ...\spring-boot-security)

(Omitted)

2017-08-02 22:55:19.756  INFO 13608 --- [           main] b.a.s.AuthenticationManagerConfiguration :

Using default security password: 40890087-600d-417d-962d-a856e139b9c4

2017-08-02 22:55:19.808  INFO 13608 --- [           main] o.s.s.web.DefaultSecurityFilterChain     : Creating filter chain: OrRequestMatcher [requestMatchers=[Ant [pattern='/css/**'], Ant [pattern='/js/**'], Ant [pattern='/images/**'], Ant [pattern='/webjars/**'], Ant [pattern='/**/favicon.ico'], Ant [pattern='/error']]], []

(Omitted)

Go to http: // localhost: 8080 / hello.html.

A dialog will appear asking you to enter your username and password. Enter the following:

The password is output to the console when the application is started.

Password output to the console

Using default security password: 40890087-600d-417d-962d-a856e139b9c4

After successfully logging in, the contents of hello.html are displayed.

Description

build.gradle

dependencies {
    compile 'org.springframework.boot:spring-boot-starter-web'
    compile 'org.springframework.boot:spring-boot-starter-security'
}

--Adding spring-boot-starter-security adds Spring Security dependencies --If you do nothing, Basic authentication is enabled by default and a user named ʻuseris prepared in memory (password changes when restarted). --Password can also be specified in thesecurity.user.passwordproperty --Also, access to/ js / **, / css / **, / images / **, / webjars / , / favicon.js` is without authentication. Set to be possible

Specify the settings

Implementation

MySecurityConfig.java

package sample.boot.config;

import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;

@EnableWebSecurity
public class MySecurityConfig extends WebSecurityConfigurerAdapter {

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
            .mvcMatchers("/login").permitAll()
            .anyRequest().authenticated()
            .and()
            .formLogin();
    }

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.inMemoryAuthentication()
            .withUser("foo").password("foo").authorities("TEST_USER");
    }
}

** Operation check **

Go to http: //localhost:8080/hello.html

The default login screen is displayed, so log in as the foo user.

Description

The default behavior can be arbitrarily rewritten by adding the configuration class annotated with @EnableWebSecurity and clarifying the Spring Security configuration.

reference

• 37. Spring MVC Integration | Spring Security Reference
• 28. Security | Spring Boot Reference Guide