SpringCloud项目搭建步骤

springCloud五大核心组件

五大核心组件如下：

服务发现——Netflix Eureka客户端

负载均衡——Netflix Ribbon

断路器——Netflix Hystrix

服务网关——Netflix Zuul

分布式配置——Spring Cloud Config

一、搭建eureka客户端

1.新建一个SpringBoot项目
2.pom文件（springcloud版本需要与springboot版本对应。详情点击)

<?xml version="1.0" encoding="UTF-8"?>
<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>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.4.2</version><relativePath/> <!-- lookup parent from repository --></parent><groupId>eureka-server</groupId><artifactId>eureka-server</artifactId><version>1.0-SNAPSHOT</version><name>eureka-server</name><description>Eureka Server project for Spring Boot</description><properties><java.version>1.8</java.version><spring-cloud.version>2020.0.5</spring-cloud.version></properties><dependencies><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-netflix-eureka-server</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency></dependencies><dependencyManagement><dependencies><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-dependencies</artifactId><version>${spring-cloud.version}</version><type>pom</type><scope>import</scope></dependency></dependencies></dependencyManagement><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build></project>

3.yml文件配置

server:port: 8761
eureka:instance:hostname: localhostclient:registerWithEureka: falsefetchRegistry: falseserviceUrl:defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka

4.启动类

@SpringBootApplication
@EnableEurekaServer
public class EurekaServerApplication {public static void main(String[] args) {SpringApplication.run(EurekaServerApplication.class, args);}
}

5.启动后访问可看到

二、导入项目（搭建项目）

1.项目pom文件（非全部，对应拷贝）

<parent><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.4.2</version>
</parent><properties><spring-cloud.version>2020.0.5</spring-cloud.version></properties><dependencies><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-netflix-eureka-client</artifactId></dependency><dependencies><dependencyManagement><dependencies><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-dependencies</artifactId><version>${spring-cloud.version}</version><type>pom</type><scope>import</scope></dependency></dependencies></dependencyManagement>

2.yml文件

server:port: 8762max-http-header-size: 10240
eureka:client:serviceUrl:defaultZone: http://localhost:8761/eureka/
spring:application:name: xxx #注册中心名称，必填。

3.项目启动后注册中心可看到

feign

1.新建一个SpringBoot项目
2.pom文件

<?xml version="1.0" encoding="UTF-8"?>
<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>org.springframework.boot</groupId><artifactId>spring-boot-starter-parent</artifactId><version>2.4.2</version><relativePath/> <!-- lookup parent from repository --></parent><groupId>service-feign</groupId><artifactId>service-feign</artifactId><version>1.0-SNAPSHOT</version><name>service-feign</name><properties><java.version>1.8</java.version><spring-cloud.version>2020.0.5</spring-cloud.version></properties><dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-netflix-eureka-client</artifactId></dependency><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-openfeign</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope></dependency></dependencies><dependencyManagement><dependencies><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-dependencies</artifactId><version>${spring-cloud.version}</version><type>pom</type><scope>import</scope></dependency></dependencies></dependencyManagement><build><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build>
</project>

3.yml文件配置

server:port: 8765
eureka:client:serviceUrl:defaultZone: http://localhost:8761/eureka/
spring:application:name: service-feign

4.启动类

@SpringBootApplication
@EnableDiscoveryClient
@EnableFeignClients
public class ServiceFeignApplication {public static void main(String[] args) {SpringApplication.run(ServiceFeignApplication.class, args);}
}

5.启动后在注册中心可看到

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SpringCloud项目搭建步骤

SpringCloud项目搭建步骤

springCloud五大核心组件

一、搭建eureka客户端

二、导入项目（搭建项目）

feign

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