Adding code for the tutorial tracked under BAEL-2488 (#6598)

spring-security-mvc-socket/src/main/java/com/baeldung/springsockets/config/WebSocketMessageBrokerConfig.java

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+package com.baeldung.springsockets.config;
+
+import java.util.List;
+
+import org.springframework.context.annotation.Configuration;
+import org.springframework.messaging.converter.MessageConverter;
+import org.springframework.messaging.handler.invocation.HandlerMethodArgumentResolver;
+import org.springframework.messaging.handler.invocation.HandlerMethodReturnValueHandler;
+import org.springframework.messaging.simp.config.ChannelRegistration;
+import org.springframework.messaging.simp.config.MessageBrokerRegistry;
+import org.springframework.web.socket.config.annotation.EnableWebSocketMessageBroker;
+import org.springframework.web.socket.config.annotation.StompEndpointRegistry;
+import org.springframework.web.socket.config.annotation.WebSocketMessageBrokerConfigurer;
+import org.springframework.web.socket.config.annotation.WebSocketTransportRegistration;
+
+@Configuration
+@EnableWebSocketMessageBroker
+public class WebSocketMessageBrokerConfig implements WebSocketMessageBrokerConfigurer {
+
+    @Override
+    public void registerStompEndpoints(StompEndpointRegistry registry) {
+        registry.addEndpoint("/ws");
+    }
+
+    @Override
+    public void configureMessageBroker(MessageBrokerRegistry config) {
+        config.setApplicationDestinationPrefixes("/app");
+        config.enableSimpleBroker("/topic");
+    }
+
+    @Override
+    public void configureWebSocketTransport(WebSocketTransportRegistration registry) {
+        // TODO Auto-generated method stub
+
+    }
+
+    @Override
+    public void configureClientInboundChannel(ChannelRegistration registration) {
+        // TODO Auto-generated method stub
+
+    }
+
+    @Override
+    public void configureClientOutboundChannel(ChannelRegistration registration) {
+        // TODO Auto-generated method stub
+
+    }
+
+    @Override
+    public void addArgumentResolvers(List<HandlerMethodArgumentResolver> argumentResolvers) {
+        // TODO Auto-generated method stub
+
+    }
+
+    @Override
+    public void addReturnValueHandlers(List<HandlerMethodReturnValueHandler> returnValueHandlers) {
+        // TODO Auto-generated method stub
+
+    }
+
+    @Override
+    public boolean configureMessageConverters(List<MessageConverter> messageConverters) {
+        // TODO Auto-generated method stub
+        return false;
+    }
+
+}

spring-security-mvc-socket/src/main/java/com/baeldung/springsockets/controllers/RestAPIController.java

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+package com.baeldung.springsockets.controllers;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping(path = "/rest")
+public class RestAPIController {
+
+    @GetMapping(path = "/{name}", produces = "application/json")
+    public String getGreeting(@PathVariable("name") String name) {
+        return "{\"greeting\" : \"Hello, " + name + "!\"}";
+    }
+
+}

spring-security-mvc-socket/src/main/java/com/baeldung/springsockets/controllers/WebSocketController.java

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+package com.baeldung.springsockets.controllers;
+
+import org.springframework.messaging.handler.annotation.MessageMapping;
+import org.springframework.messaging.handler.annotation.SendTo;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.util.HtmlUtils;
+
+import com.baeldung.springsockets.models.Greeting;
+import com.baeldung.springsockets.models.Message;
+
+@Controller
+public class WebSocketController {
+
+    @MessageMapping("/hello")
+    @SendTo("/topic/greetings")
+    public Greeting greeting(Message message) throws Exception {
+        return new Greeting("Hello, " + HtmlUtils.htmlEscape(message.getName()) + "!");
+    }
+
+}

spring-security-mvc-socket/src/main/java/com/baeldung/springsockets/models/Greeting.java

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+package com.baeldung.springsockets.models;
+
+public class Greeting {
+
+    private String content;
+
+    public Greeting() {
+    }
+
+    public Greeting(String content) {
+        this.content = content;
+    }
+
+    public String getContent() {
+        return content;
+    }
+
+}

spring-security-mvc-socket/src/main/java/com/baeldung/springsockets/models/Message.java

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+package com.baeldung.springsockets.models;
+
+public class Message {
+
+    private String name;
+
+    public Message() {
+    }
+
+    public Message(String name) {
+        this.name = name;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+}

spring-security-mvc-socket/src/main/resources/static/rest.html

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+<!DOCTYPE html>
+<html>
+<head>
+    <title>Demo for RESTful Service for Comparison to WebSocket</title>
+    <link href="/webjars/bootstrap/css/bootstrap.min.css" rel="stylesheet">
+    <script src="/webjars/jquery/jquery.min.js"></script>
+    <script src="/webjars/sockjs-client/sockjs.min.js"></script>
+    <script src="/webjars/stomp-websocket/stomp.min.js"></script>
+    <script src="/rest.js"></script>
+</head>
+<body>
+<div id="main-content" class="container">
+    <div class="row">
+        <div class="col-md-6">
+            <form class="form-inline">
+                <div class="form-group">
+                    <label for="name">Name: </label>
+                    <input type="text" id="name" class="form-control" placeholder="Please enter yout name">
+                </div>
+                <button id="send" class="btn btn-default" type="submit">Send</button>
+            </form>
+        </div>
+    </div>
+    <div class="row">
+        <div class="col-md-12">
+            <table id="conversation" class="table table-striped">
+                <thead>
+                <tr>
+                    <th>Greetings</th>
+                </tr>
+                </thead>
+                <tbody id="greetings">
+                </tbody>
+            </table>
+        </div>
+    </div>
+</div>
+</body>
+</html>

spring-security-mvc-socket/src/main/resources/static/rest.js

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+var request = new XMLHttpRequest()
+
+function sendName() {  
+    request.open('GET', 'http://localhost:8080/rest/'+$("#name").val(), true)
+    request.onload = function () {
+    	var data = JSON.parse(this.response)
+    	showGreeting(data.greeting)
+    }
+    request.send()
+}
+
+function showGreeting(message) {
+    $("#greetings").append("<tr><td>" + message + "</td></tr>");
+}
+
+$(function () {
+    $("form").on('submit', function (e) {
+        e.preventDefault();
+    });
+    $( "#send" ).click(function() { sendName(); });
+});

spring-security-mvc-socket/src/main/resources/static/ws.html

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+<!DOCTYPE html>
+<html>
+<head>
+    <title>Demo for WebSocket for Comparison to RESTful Service</title>
+    <link href="/webjars/bootstrap/css/bootstrap.min.css" rel="stylesheet">
+    <script src="/webjars/jquery/jquery.min.js"></script>
+    <script src="/webjars/sockjs-client/sockjs.min.js"></script>
+    <script src="/webjars/stomp-websocket/stomp.min.js"></script>
+    <script src="/ws.js"></script>
+</head>
+<body>
+<div id="main-content" class="container">
+    <div class="row">
+        <div class="col-md-6">
+            <form class="form-inline">
+                <div class="form-group">
+                    <label for="name">Name: </label>
+                    <input type="text" id="name" class="form-control" placeholder="Please enter yout name">
+                </div>
+                <button id="send" class="btn btn-default" type="submit">Send</button>
+            </form>
+        </div>
+    </div>
+    <div class="row">
+        <div class="col-md-12">
+            <table id="conversation" class="table table-striped">
+                <thead>
+                <tr>
+                    <th>Greetings</th>
+                </tr>
+                </thead>
+                <tbody id="greetings">
+                </tbody>
+            </table>
+        </div>
+    </div>
+</div>
+</body>
+</html>

spring-security-mvc-socket/src/main/resources/static/ws.js

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+var stompClient = null;
+
+function connect() {
+    stompClient = Stomp.client('ws://localhost:8080/ws');
+    stompClient.connect({}, function (frame) {
+        stompClient.subscribe('/topic/greetings', function (response) {
+            showGreeting(JSON.parse(response.body).content);
+        });
+    });
+}
+
+function sendName() {
+	stompClient.send("/app/hello", {}, JSON.stringify({'name': $("#name").val()}));
+}
+
+function showGreeting(message) {
+    $("#greetings").append("<tr><td>" + message + "</td></tr>");
+}
+
+$(function () {
+	connect();
+    $("form").on('submit', function (e) {
+        e.preventDefault();
+    });
+    $( "#send" ).click(function() { sendName(); });
+});