Create a multi-module Springcloud application Eureka Server and client and consumer demo

Using the environment is STS + maven

1 Creating a parent project, SPRINGCLOUD-DEMO1

Maven Project, New

Configure them as required. Then delete the SRC directory because the parent project is only configuration item dependent and version control is used.

1.2 Modifying the Pom file

<project xmlns="http://maven.apache.org/POM/4.0.0"Xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemalocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.huitong</groupId> <artifactid>springcloud-demo1</ Artifactid> <version>0.0.1-snapshot</version> <packaging>pom</packaging> <properties> < project.build.sourceencoding>utf-8</project.build.sourceEncoding> <project.reporting.outputencoding>utf-8</project.reporting.outputEncoding> <java.version>1.8</java.version> <spring-cloud.version>Edgware.SR4</spring-cloud.version> </properties> & Lt;parent> <groupId>org.springframework.boot</groupId> <artifactId> Spring-boot-starter-parent</artifactid> <version>1.5. -. release</version> </parent> <dependencyManagement> <dependencies> &LT;DEPENDENCY&G        T <groupId>org.springframework.cloud</groupId> <artifactid>spring-cloud-dependencies</ artifactid> <version>${spring-cloud.version}</version> <type>pom</type> &L        t;scope>import</scope> </dependency> </dependencies> </dependencyManagement> <modules> </modules></project>

At this point also note that there is a certain correlation between the Springcloud and springboot versions, preferably using the corresponding version recommended by the official website. Otherwise, there may be an issue with incompatible versions. That's how I came to the pit.

2 Creating the Eureka Server-side project, Spring-cloud-sureka-server

Right-click on the Springcloud-demo1 project, new MAVEN module

2.2 Modify Pom file, add eureka-server dependency, Spring-cloud-starter-eureka-server

<project xmlns="http://maven.apache.org/POM/4.0.0"Xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemalocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>com.huitong</groupId> <artifactId> Springcloud-demo1</artifactid> <version>0.0.1-snapshot</version> </parent> <artifactId>spring-cloud-eureka-server</artifactId> < dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifactid >spring-cloud-starter-eureka-server</artifactId> </dependency> <dependency> <gr Oupid>org.springframework.boot</groupid> <artifactId>spring-boot-devtools</artifactId> < Optional>true</optional> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> &LT;ARTIFACTID&GT;SPRING-BOOT-MAVEN-PLUGIN&LT;/ARTIFAC tid> </plugin> </plugins> </build></project>

2.3 Adding a configuration file application.yml

Server:   8010   Eureka:  instance:    127.0.  0.1    prefertrue      client:    Register false     Fetchfalse    service-URL:      default-zone:http://  ${eureka.instance.hostname}:${server.port}/eureka/

Eureka Configuration Description Visible http://www.cnblogs.com/li3807/p/7282492.html

Specify the exposed registration service address on the server side Service-url. Allows the client to register the app with the address.

2.4 Adding the Startup class, Starteurekaserver

Import Org.springframework.boot.springapplication;import Org.springframework.boot.autoconfigure.springbootapplication;import Org.springframework.cloud.netflix.eureka.server.EnableEurekaServer, @SpringBootApplication @enableeurekaserver Public class  starteurekaserver {    publicstaticvoid Main (string[] args) {        springapplication.run (starteurekaserver. class , args);}    }

3 Create a new service provider Module,spring-cloud-eureka-client-demo1, just like the Eureka method, right-click on the Springcloud-demo1 project, the new MAVEN module

3.2 Modifying the Pom file

<project xmlns="http://maven.apache.org/POM/4.0.0"Xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemalocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>com.huitong</groupId> <artifactId> Springcloud-demo1</artifactid> <version>0.0.1-snapshot</version> </parent> <artifactId>spring-cloud-eureka-client-demo1</artifactId> <dependencies> <dependency> <groupId>org.springframework.cloud</groupId> <artifa ctid>spring-cloud-starter-eureka</artifactid> </dependency> <dependency> &LT;GROUPID&G T;org.springframework.boot</groupid> <artifactId>spring-boot-starter-web</artifactId> </ dependency> <!--https://Mvnrepository.com/artifact/org.projectlombok/lombok --<dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <scope>provided</scope> </dependency> <!--https://Mvnrepository.com/artifact/org.apache.commons/commons-lang3 --<dependency> <groupId>org.apache.commons</groupId> &LT;ARTIFACTID&GT;COMMONS-LANG3&LT;/ARTIFAC tid> </dependency> </dependencies> </project>

3.3 Adding a configuration file application.yml

Server:port:8020Spring:application:name:eureka-client-demo1 eureka:instance:preferIpAddress:truehostname:127.0.0.1instanceId: ${spring.cloud.client.ipaddress:127.0.0.1}:${server.port} Client:registerwitheureka:trueFetchregistry:trueserviceUrl:defaultZone:http://${eureka.instance.hostname}:${eureka.port:8010}/eureka/

3.4 Writing the startup class, SpringCloudDemo1

Import Org.springframework.boot.springapplication;import Org.springframework.boot.autoconfigure.springbootapplication;import Org.springframework.cloud.netflix.eureka.EnableEurekaClient, @SpringBootApplication @enableeurekaclient  publicclass  SpringCloudDemo1 {    publicstaticvoid  Main ( String[] args) {        springapplication.run (SpringCloudDemo1. class , args);}    }

3.5 Simple entity class, Student

import Lombok. Allargsconstructor;import Lombok. Builder;import Lombok. Data;import Lombok. Noargsconstructor, @Data @noargsconstructor@allargsconstructor@builderpublicclass  Student {    private  String name;     Private Integer age;}

3.6 Controller

import Org.apache.commons.lang3.objectutils;import org.springframework.web.bind.annotation.RequestMapping; Import Org.springframework.web.bind.annotation.requestmethod;import Org.springframework.web.bind.annotation.RestController; @RestController Public classStudentcontroller {@RequestMapping (value="/student/demo1", method=requestmethod.get) PublicStudent getStu1 () {Student result= Student.builder (). Name ("Allen"). Age ( at). build (); if(Objectutils.allnotnull (Result)) {System. out. println (Result); }                returnresult; }}

Visit page at this time: http://localhost:8010/

Description: Due to the low Springcloud version or any reason, in the writing of the configuration, using the horizontal line named when the start of the time to give me an error, Com.sun.jersey.api.client.ClientHandlerException:java. NET. Connectexception:connection refused:connect

Later, a large amount of data was found to change the configuration property to the hump naming method .

Create a multi-module Springcloud application Eureka Server and client and consumer demo