add reactive/webflux/java folder

reactive/webflux/java/hello-security-explicit/src/main/java/example/HelloSecurityExplicitApplication.java

@@ -0,0 +1,35 @@
+/*
+ * Copyright 2002-2017 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package example;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+/**
+ * Explicit WebFlux Security application.
+ *
+ * @author Rob Winch
+ * @since 5.0
+ */
+@SpringBootApplication
+public class HelloSecurityExplicitApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(HelloSecurityExplicitApplication.class, args);
+	}
+
+}

reactive/webflux/java/hello-security-explicit/src/main/java/example/IndexController.java

@@ -0,0 +1,36 @@
+/*
+ * Copyright 2002-2017 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package example;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
+
+/**
+ * Index Controller.
+ *
+ * @author Rob Winch
+ * @since 5.0
+ */
+@Controller
+public class IndexController {
+
+	@GetMapping("/")
+	public String index() {
+		return "index";
+	}
+
+}

reactive/webflux/java/hello-security-explicit/src/main/java/example/SecurityConfiguration.java

@@ -0,0 +1,62 @@
+/*
+ * Copyright 2002-2019 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package example;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.security.config.annotation.web.reactive.EnableWebFluxSecurity;
+import org.springframework.security.config.web.server.ServerHttpSecurity;
+import org.springframework.security.core.userdetails.MapReactiveUserDetailsService;
+import org.springframework.security.core.userdetails.User;
+import org.springframework.security.core.userdetails.UserDetails;
+import org.springframework.security.web.server.SecurityWebFilterChain;
+
+import static org.springframework.security.config.Customizer.withDefaults;
+
+/**
+ * Minimal explicit Security configuration.
+ *
+ * @author Rob Winch
+ * @since 5.0
+ */
+@EnableWebFluxSecurity
+public class SecurityConfiguration {
+
+	@Bean
+	SecurityWebFilterChain springWebFilterChain(ServerHttpSecurity http) {
+		// @formatter:off
+		http
+			.authorizeExchange((exchanges) -> exchanges
+				.anyExchange().authenticated()
+			)
+			.formLogin(withDefaults());
+		// @formatter:on
+		return http.build();
+	}
+
+	@Bean
+	MapReactiveUserDetailsService userDetailsService() {
+		// @formatter:off
+		UserDetails user = User.withDefaultPasswordEncoder()
+			.username("user")
+			.password("password")
+			.roles("USER")
+			.build();
+		// @formatter:on
+		return new MapReactiveUserDetailsService(user);
+	}
+
+}

reactive/webflux/java/hello-security-explicit/src/main/resources/templates/index.html

@@ -0,0 +1,9 @@
+<html xmlns:th="https://www.thymeleaf.org">
+<head>
+    <title>Hello Security!</title>
+</head>
+<body>
+    <h1>Hello Security</h1>
+    <a id="logout" th:href="@{/logout}">Log Out</a>
+</body>
+</html>