Refactor example to be SpringBoot idiomatic

.gitignore

@@ -0,0 +1,3 @@
+.idea/
+*.iml
+target/

src/main/java/com/example/IndexController.java

@@ -0,0 +1,13 @@
+package com.example;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+@Controller
+public class IndexController {
+
+    @RequestMapping("/")
+    public String index() {
+        return "index";
+    }
+}

src/main/java/com/example/SecurityConfiguration.java

@@ -1,42 +1,53 @@
 package com.example;
 
-import static org.springframework.security.extensions.saml2.config.SAMLConfigurer.saml;
-
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
 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;
 
+import static org.springframework.security.extensions.saml2.config.SAMLConfigurer.saml;
+
 @EnableWebSecurity
 @Configuration
 @EnableGlobalMethodSecurity(securedEnabled = true)
 public class SecurityConfiguration extends WebSecurityConfigurerAdapter {
     @Value("${security.saml2.metadata-url}")
     String metadataUrl;
 
+    @Value("${server.ssl.key-alias}")
+    String keyAlias;
+
+    @Value("${server.ssl.key-store-password}")
+    String password;
+
+    @Value("${server.port}")
+    String port;
+
+    @Value("${server.ssl.key-store}")
+    String keyStoreFilePath;
+
     @Override
-    protected void configure(HttpSecurity http) throws Exception {
+    protected void configure(final HttpSecurity http) throws Exception {
         http
             .authorizeRequests()
-                .antMatchers("/saml/**").permitAll()
+                .antMatchers("/saml*").permitAll()
                 .anyRequest().authenticated()
                 .and()
             .apply(saml())
                 .serviceProvider()
                     .keyStore()
-                        .storeFilePath("saml/keystore.jks")
-                        .password("secret")
-                        .keyname("spring")
-                        .keyPassword("secret")
+                .storeFilePath("saml/keystore.jks")
+                .password(this.password)
+                .keyname(this.keyAlias)
+                .keyPassword(this.password)
                         .and()
                     .protocol("https")
-                    .hostname("localhost:8443")
+                .hostname(String.format("%s:%s", "localhost", this.port))
                     .basePath("/")
                     .and()
                 .identityProvider()
-                    .metadataFilePath(metadataUrl)
-                    .and();
+                .metadataFilePath(this.metadataUrl);
     }
 }