Added code for new module
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Kiran
GitHub
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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.baeldung</groupId>
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<artifactId>spring-cloud-ribbon</artifactId>
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<version>0.0.1-SNAPSHOT</version>
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<packaging>jar</packaging>
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<name>spring-cloud-ribbon-client</name>
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<description>Introduction to Spring Cloud Rest Client with Netflix Ribbon</description>
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<parent>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-parent</artifactId>
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<version>1.4.1.RELEASE</version>
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<relativePath /> <!-- lookup parent from repository -->
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</parent>
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<java.version>1.8</java.version>
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</properties>
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<dependencies>
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<dependency>
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<groupId>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-starter-ribbon</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-web</artifactId>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-test</artifactId>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<dependencyManagement>
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<dependencies>
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<dependency>
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<groupId>org.springframework.cloud</groupId>
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<artifactId>spring-cloud-dependencies</artifactId>
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<version>Camden.SR1</version>
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<type>pom</type>
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<scope>import</scope>
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</dependency>
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</dependencies>
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</dependencyManagement>
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<build>
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<plugins>
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<plugin>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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</plugin>
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</plugins>
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</build>
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<repositories>
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<repository>
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<id>spring-snapshots</id>
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<name>Spring Snapshots</name>
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<url>https://repo.spring.io/snapshot</url>
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<snapshots>
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<enabled>true</enabled>
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</snapshots>
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</repository>
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<repository>
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<id>spring-milestones</id>
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<name>Spring Milestones</name>
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<url>https://repo.spring.io/milestone</url>
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<snapshots>
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<enabled>false</enabled>
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</snapshots>
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</repository>
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</repositories>
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</project>
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package com.baeldung.spring.cloud.ribbon.client;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.context.annotation.Bean;
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import com.netflix.client.config.IClientConfig;
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import com.netflix.loadbalancer.IPing;
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import com.netflix.loadbalancer.IRule;
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import com.netflix.loadbalancer.PingUrl;
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import com.netflix.loadbalancer.WeightedResponseTimeRule;
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import com.netflix.loadbalancer.AvailabilityFilteringRule;
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public class RibbonConfiguration {
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@Autowired
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IClientConfig ribbonClientConfig;
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@Bean
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public IPing ribbonPing(IClientConfig config) {
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return new PingUrl();
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}
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@Bean
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public IRule ribbonRule(IClientConfig config) {
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return new WeightedResponseTimeRule();
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}
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}
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package com.baeldung.spring.cloud.ribbon.client;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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import org.springframework.cloud.client.loadbalancer.LoadBalanced;
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import org.springframework.cloud.netflix.ribbon.RibbonClient;
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import org.springframework.context.annotation.Bean;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RestController;
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import org.springframework.web.client.RestTemplate;
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@SpringBootApplication
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@RestController
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@RibbonClient(name = "ping-a-server", configuration = RibbonConfiguration.class)
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public class ServerLocationApp {
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@LoadBalanced
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@Bean
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RestTemplate getRestTemplate() {
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return new RestTemplate();
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}
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@Autowired
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RestTemplate restTemplate;
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@RequestMapping("/server-location")
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public String serverLocation() {
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String servLoc = this.restTemplate.getForObject("http://ping-server/locaus", String.class);
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return servLoc;
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}
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public static void main(String[] args) {
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SpringApplication.run(ServerLocationApp.class, args);
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}
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}
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spring:
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application:
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name: spring-cloud-ribbon
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server:
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port: 8888
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ping-server:
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ribbon:
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eureka:
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enabled: false
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listOfServers: localhost:9092,localhost:9999
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ServerListRefreshInterval: 15000
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package com.baeldung.spring.cloud.ribbon.client;
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import static org.assertj.core.api.BDDAssertions.then;
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import static org.junit.Assert.assertEquals;
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import org.junit.After;
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import org.junit.Before;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.context.embedded.LocalServerPort;
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import org.springframework.boot.test.context.SpringBootTest;
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import org.springframework.boot.test.web.client.TestRestTemplate;
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import org.springframework.context.ConfigurableApplicationContext;
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import org.springframework.http.HttpStatus;
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import org.springframework.http.ResponseEntity;
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import org.springframework.test.context.junit4.SpringRunner;
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@SuppressWarnings("unused")
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@RunWith(SpringRunner.class)
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@SpringBootTest(classes = ServerLocationApp.class, webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
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public class ServerLocationAppTests {
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ConfigurableApplicationContext application2;
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ConfigurableApplicationContext application3;
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@Before
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public void startApps() {
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this.application2 = startApp(9092);
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this.application3 = startApp(9999);
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}
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@After
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public void closeApps() {
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this.application2.close();
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this.application3.close();
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}
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@LocalServerPort
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private int port;
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@Autowired
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private TestRestTemplate testRestTemplate;
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@Test
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public void loadBalancingServersTest() throws InterruptedException {
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ResponseEntity<String> response = this.testRestTemplate.getForEntity("http://localhost:" + this.port + "/server-location", String.class);
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assertEquals(response.getBody(), "Australia");
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}
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private ConfigurableApplicationContext startApp(int port) {
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return SpringApplication.run(TestConfig.class, "--server.port=" + port, "--spring.jmx.enabled=false");
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}
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}
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@ -0,0 +1,17 @@
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package com.baeldung.spring.cloud.ribbon.client;
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import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
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import org.springframework.context.annotation.Configuration;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RestController;
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@Configuration
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@EnableAutoConfiguration
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@RestController
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public class TestConfig {
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@RequestMapping(value = "/locaus")
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public String locationAUSDetails() {
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return "Australia";
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}
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}
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