Remove /servlet/hello/index.adoc
This is now /servlet/getting-started.adoc
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Rob Winch
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[[servlet-hello]]
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= Hello Spring Security
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This section covers the minimum setup for how to use Spring Security with Spring Boot.
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[NOTE]
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====
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The completed application can be found {gh-samples-url}/servlet/spring-boot/java/hello-security[in our samples repository].
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For your convenience, you can download a minimal Spring Boot + Spring Security application by https://start.spring.io/starter.zip?type=maven-project&language=java&packaging=jar&jvmVersion=1.8&groupId=example&artifactId=hello-security&name=hello-security&description=Hello%20Security&packageName=example.hello-security&dependencies=web,security[clicking here].
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====
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[[servlet-hello-dependencies]]
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== Updating Dependencies
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The only step you need to do is update the dependencies by using xref:getting-spring-security.adoc#getting-maven-boot[Maven] or xref:getting-spring-security.adoc#getting-gradle-boot[Gradle].
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[[servlet-hello-starting]]
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== Starting Hello Spring Security Boot
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You can now https://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#using-boot-running-with-the-maven-plugin[run the Spring Boot application] by using the Maven Plugin's `run` goal.
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The following example shows how to do so (and the beginning of the output from doing so):
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.Running Spring Boot Application
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====
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[source,bash]
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----
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$ ./mvn spring-boot:run
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...
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INFO 23689 --- [ restartedMain] .s.s.UserDetailsServiceAutoConfiguration :
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Using generated security password: 8e557245-73e2-4286-969a-ff57fe326336
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...
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----
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====
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[[servlet-hello-auto-configuration]]
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== Spring Boot Auto Configuration
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// FIXME: Link to relevant portions of documentation
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// FIXME: Link to Spring Boot's Security Auto configuration classes
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// FIXME: Add a links for what user's should do next
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Spring Boot automatically:
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* Enables Spring Security's default configuration, which creates a servlet `Filter` as a bean named `springSecurityFilterChain`.
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This bean is responsible for all the security (protecting the application URLs, validating submitted username and passwords, redirecting to the log in form, and so on) within your application.
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* Creates a `UserDetailsService` bean with a username of `user` and a randomly generated password that is logged to the console.
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* Registers the `Filter` with a bean named `springSecurityFilterChain` with the Servlet container for every request.
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Spring Boot is not configuring much, but it does a lot.
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A summary of the features follows:
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* Require an authenticated user for any interaction with the application
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* Generate a default login form for you
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* Let the user with a username of `user` and a password that is logged to the console to authenticate with form-based authentication (in the preceding example, the password is `8e557245-73e2-4286-969a-ff57fe326336`)
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* Protects the password storage with BCrypt
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* Lets the user log out
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* https://en.wikipedia.org/wiki/Cross-site_request_forgery[CSRF attack] prevention
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* https://en.wikipedia.org/wiki/Session_fixation[Session Fixation] protection
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* Security Header integration
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** https://en.wikipedia.org/wiki/HTTP_Strict_Transport_Security[HTTP Strict Transport Security] for secure requests
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** https://msdn.microsoft.com/en-us/library/ie/gg622941(v=vs.85).aspx[X-Content-Type-Options] integration
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** Cache Control (can be overridden later by your application to allow caching of your static resources)
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** https://msdn.microsoft.com/en-us/library/dd565647(v=vs.85).aspx[X-XSS-Protection] integration
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** X-Frame-Options integration to help prevent https://en.wikipedia.org/wiki/Clickjacking[Clickjacking]
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* Integrate with the following Servlet API methods:
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** https://docs.oracle.com/javaee/6/api/javax/servlet/http/HttpServletRequest.html#getRemoteUser()[`HttpServletRequest#getRemoteUser()`]
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** https://docs.oracle.com/javaee/6/api/javax/servlet/http/HttpServletRequest.html#getUserPrincipal()[`HttpServletRequest#getUserPrincipal()`]
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** https://docs.oracle.com/javaee/6/api/javax/servlet/http/HttpServletRequest.html#isUserInRole(java.lang.String)[`HttpServletRequest#isUserInRole(java.lang.String)`]
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** https://docs.oracle.com/javaee/6/api/javax/servlet/http/HttpServletRequest.html#login(java.lang.String,%20java.lang.String)[`HttpServletRequest#login(java.lang.String, java.lang.String)`]
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** https://docs.oracle.com/javaee/6/api/javax/servlet/http/HttpServletRequest.html#logout()[`HttpServletRequest#logout()`]
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