Spring Cloud Zookeeper (#1399)

* Spring Cloud Zookeeper

* Spring Cloud Zookeeper Updated

spring-cloud/spring-cloud-zookeeper/Greeting/src/main/java/com/baeldung/spring/cloud/greeting/GreetingApplication.java

@@ -0,0 +1,27 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package com.baeldung.spring.cloud.greeting;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
+import org.springframework.cloud.netflix.feign.EnableFeignClients;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.ResponseBody;
+import org.springframework.web.bind.annotation.RestController;
+
+@SpringBootApplication
+@EnableDiscoveryClient
+public class GreetingApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(GreetingApplication.class, args);
+	}
+
+}

spring-cloud/spring-cloud-zookeeper/Greeting/src/main/java/com/baeldung/spring/cloud/greeting/GreetingController.java

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+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package com.baeldung.spring.cloud.greeting;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.cloud.netflix.feign.EnableFeignClients;
+import org.springframework.stereotype.Controller;
+
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.ResponseBody;
+import org.springframework.web.bind.annotation.RestController;
+
+@Controller
+public class GreetingController {
+
+	@Autowired
+	private HelloWorldClient helloWorldClient;
+
+	@RequestMapping(value = "/get-greeting", method = RequestMethod.GET)
+
+	public String greeting(Model model) {
+
+		model.addAttribute("greeting", helloWorldClient.HelloWorld());
+		return "greeting-view";
+
+	}
+
+}

spring-cloud/spring-cloud-zookeeper/Greeting/src/main/java/com/baeldung/spring/cloud/greeting/HelloWorldClient.java

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+package com.baeldung.spring.cloud.greeting;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
+import org.springframework.cloud.netflix.feign.EnableFeignClients;
+import org.springframework.cloud.netflix.feign.FeignClient;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.http.MediaType;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.ResponseBody;
+
+/**
+ * This class provides operations on the Validation service.
+ *
+ * <p>
+ * When booting up, Spring will try and find a service named "Validation" (see
+ * the FeignClient below) under the available ZooKeeper instance.
+ * </p>
+ *
+ */
+@Configuration
+@EnableFeignClients
+@EnableDiscoveryClient
+public class HelloWorldClient {
+
+	@Autowired
+	private TheClient theClient;
+
+	@FeignClient(name = "HelloWorld")
+	interface TheClient {
+
+		@RequestMapping(path = "/helloworld", method = RequestMethod.GET)
+		@ResponseBody
+		String HelloWorld();
+	}
+
+	/**
+	 * Initiate call to Validation.
+	 *
+	 * @param name
+	 * @return the response
+	 */
+	public String HelloWorld() {
+		return theClient.HelloWorld();
+	}
+
+}

spring-cloud/spring-cloud-zookeeper/Greeting/src/main/resources/application.yml

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+spring:
+  application:
+    name: Greeting
+  cloud:
+    zookeeper:
+      connect-string: localhost:2181
+server:
+  port: 8083
+logging:
+  level:
+    org.apache.zookeeper.ClientCnxn: WARN

spring-cloud/spring-cloud-zookeeper/Greeting/src/main/resources/templates/greeting-view.html

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+<!DOCTYPE html>
+<html xmlns:th="http://www.thymeleaf.org">
+    <head>
+        <title>Greeting Page</title>
+    </head>
+    <body>
+        <h2 th:text="${greeting}"/>
+    </body>
+</html>