springboot2.0和springcloud Finchley版項(xiàng)目的搭建示例

小編給大家分享一下springboot2.0和springcloud Finchley版項(xiàng)目的搭建示例，希望大家閱讀完這篇文章之后都有所收獲，下面讓我們一起去探討吧！

前段時(shí)間spring boot 2.0發(fā)布了，與之對(duì)應(yīng)的spring cloud Finchley版本也隨之而來(lái)了，兩者之間的關(guān)系和版本對(duì)應(yīng)詳見(jiàn)我這邊文章：spring boot和spring cloud對(duì)應(yīng)的版本關(guān)系

項(xiàng)目地址：spring-cloud-demo

spring boot 1.x和spring cloud Dalston和Edgware版本搭建的微服務(wù)項(xiàng)目現(xiàn)在已經(jīng)很流行了，現(xiàn)在很多企業(yè)都已經(jīng)在用了，這里就不多說(shuō)了。

使用版本說(shuō)明：

• spring boot 2.0.x

• spring cloud Finchley.RELEASE

• jdk 1.8

• maven 3.9

Eureka 注冊(cè)中心

spring cloud Finchley在支持spring 2.0時(shí)修改了eureka的jar包，把之前netflix系列的jar引入的時(shí)候都加上了netflix

<dependency>
  <groupId>org.springframework.cloud</groupId>
  <artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
</dependency>

新建一個(gè)eureka-service注冊(cè)中心服務(wù)，pom.xml 文件內(nèi)容如下：

<?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>
 
  <groupId>com.sunvalley</groupId>
  <artifactId>eureka-service</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>jar</packaging>
 
  <name>eureka-service</name>
  <description>Demo project for Spring Boot</description>
 
  <parent>
   <groupId>com.sunvalley.springcloud</groupId>
   <artifactId>spring-cloud-demo</artifactId>
   <version>0.0.1-SNAPSHOT</version>
  </parent>
 
  <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>Finchley.RELEASE</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>

eureka-service服務(wù)的配置文件，application.yml

spring:
 application:
  name: eureka-service
 
server:
 port: 5000
 
eureka:
 instance:
  hostname: localhost
 client:
  registerWithEureka: false
  fetchRegistry: false
  serviceUrl:
   defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/

eureka-service服務(wù)的配置文件，EurekaServiceApplication

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

使用IDEA啟動(dòng)eureka-service服務(wù)，本地訪問(wèn) http://localhost:5000/ 即可看到注冊(cè)中心內(nèi)容。

服務(wù)消費(fèi)者consumer和提供者provider

實(shí)際工作中大多數(shù)一個(gè)服務(wù)既是其它服務(wù)的消費(fèi)者又有可能是服務(wù)的提供者，所以我們也就不用刻意的取區(qū)分開。

新建一個(gè)order-service服務(wù)，pom.xml文件

注意：除了eureka-client，openfeign等jar包外，記得引入spring-boot-starter-web不然會(huì)出現(xiàn)啟動(dòng)報(bào)錯(cuò)。

<?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>
 
  <groupId>com.sunvalley</groupId>
  <artifactId>order-service</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>jar</packaging>
 
  <name>order-service</name>
  <description>Demo project for Spring Cloud</description>
 
  <parent>
   <groupId>com.sunvalley.springcloud</groupId>
   <artifactId>spring-cloud-demo</artifactId>
   <version>0.0.1-SNAPSHOT</version>
  </parent>
 
  <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>Finchley.RELEASE</spring-cloud.version>
  </properties>
 
  <dependencies>
   <dependency>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter</artifactId>
   </dependency>
 
   <!-- eureka 里面已經(jīng)包含 ribbon 了， 所以不用單獨(dú)添加， ribbon依賴， 點(diǎn)擊依賴就去看就知道了 -->
   <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.cloud</groupId>
     <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
   </dependency>
 
   <dependency>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-web</artifactId>
   </dependency>
 
   <dependency>
     <groupId>org.projectlombok</groupId>
     <artifactId>lombok</artifactId>
     <optional>true</optional>
   </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>
 
  <repositories>
   <repository>
     <id>spring-snapshots</id>
     <name>Spring Snapshots</name>
     <url>https://repo.spring.io/snapshot</url>
     <snapshots>
      <enabled>true</enabled>
     </snapshots>
   </repository>
   <repository>
     <id>spring-milestones</id>
     <name>Spring Milestones</name>
     <url>https://repo.spring.io/milestone</url>
     <snapshots>
      <enabled>false</enabled>
     </snapshots>
   </repository>
  </repositories>
 
  <pluginRepositories>
   <pluginRepository>
     <id>spring-snapshots</id>
     <name>Spring Snapshots</name>
     <url>https://repo.spring.io/snapshot</url>
     <snapshots>
      <enabled>true</enabled>
     </snapshots>
   </pluginRepository>
   <pluginRepository>
     <id>spring-milestones</id>
     <name>Spring Milestones</name>
     <url>https://repo.spring.io/milestone</url>
     <snapshots>
      <enabled>false</enabled>
     </snapshots>
   </pluginRepository>
  </pluginRepositories>
 
 
</project>

order-service服務(wù)的配置文件，application.yml

spring:
 application:
  name: order-service
 
server:
 port: 5100
 
eureka:
 client:
  service-url:
   defaultZone: http://localhost:5000/eureka/
 
 
feign:
 hystrix:
  enabled: true

order-service服務(wù)的啟動(dòng)類，OrderServiceApplication

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

order-service服務(wù)的接口，OrderController

@RestController
@RequestMapping("/order")
public class OrderController {
  @Value("${server.port}")
  private String port;
 
  /**
   * 獲取服務(wù)端口號(hào)
   * @return
   */
  @GetMapping("/getOrderPort")
  public String getOrderPort() {
    return "order-service port：" + port;
  }
}

新建一個(gè)user-service服務(wù)，pom.xml文件跟order-service一樣的這里就不列出來(lái)了

user-service服務(wù)的配置文件，application.yml

spring:
 application:
  name: user-service
 
server:
 port: 5200
 
eureka:
 client:
  service-url:
   defaultZone: http://localhost:5000/eureka/
 
feign:
 hystrix:
  enabled: true

user-service服務(wù)的啟動(dòng)類也跟order-service一樣的

在user-service工程目錄下新建一個(gè)package，再新建一個(gè)OrderRemote接口使用feign調(diào)用order-service的方法

@FeignClient(value = "order-service", fallback = OrderRemoteHystrix.class)
public interface OrderRemote {
  @GetMapping("/order/getOrderPort")
  String getOrderPort();
}

熔斷機(jī)制提示類

@Component
public class OrderRemoteHystrix implements OrderRemote {
  @Override
  public String getOrderPort() {
    return "order service 調(diào)用失?。?quot;;
  }
}

user-service服務(wù)的接口，UserController

@RestController
@RequestMapping("/user")
public class UserController {
  @Autowired
  OrderRemote orderRemote;
  @Value("${server.port}")
  String port;
 
  /**
   * 獲取用戶服務(wù)的端口
   * @return
   */
  @GetMapping("/getUserPort")
  public String getUserPort() {
    return "user-service port：" + port;
  }
 
  /**
   * 獲取訂單服務(wù)的端口
   * @return
   */
  @GetMapping("/getOrderPort")
  public String getOrderPort() {
    return "user-order-service port：" + orderRemote.getOrderPort();
  }
}

測(cè)試，分別啟動(dòng)eureka-service，order-service，user-service就可以在注冊(cè)中心看到服務(wù)

在瀏覽器訪問(wèn) http://localhost:5100/order/getOrderPort 調(diào)用order-service的接口

 在瀏覽器訪問(wèn) http://localhost:5200/user/getOrderPort 通過(guò)user-service使用feign聲明式調(diào)用order-service的接口

關(guān)閉order-service，再次調(diào)用就會(huì)發(fā)現(xiàn)熔斷機(jī)制起了作用

spring cloud gateway

Spring Cloud Gateway是Spring官方基于Spring 5.0，Spring Boot 2.0和Project Reactor等技術(shù)開發(fā)的網(wǎng)關(guān)，Spring Cloud Gateway旨在為微服務(wù)架構(gòu)提供一種簡(jiǎn)單而有效的統(tǒng)一的API路由管理方式。Spring Cloud Gateway作為Spring Cloud生態(tài)系中的網(wǎng)關(guān)，目標(biāo)是替代Netflix ZUUL，其不僅提供統(tǒng)一的路由方式，并且基于Filter鏈的方式提供了網(wǎng)關(guān)基本的功能，例如：安全，監(jiān)控/埋點(diǎn)，和限流等。

新建一個(gè)gateway-service服務(wù)，pom.xml文件如下

<?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>
 
  <groupId>com.sunvalley</groupId>
  <artifactId>gateway-service</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>jar</packaging>
 
  <name>gateway-service</name>
  <description>Demo project for Spring Cloud</description>
 
  <parent>
   <groupId>com.sunvalley.springcloud</groupId>
   <artifactId>spring-cloud-demo</artifactId>
   <version>0.0.1-SNAPSHOT</version>
  </parent>
 
  <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>Finchley.RELEASE</spring-cloud.version>
  </properties>
 
  <dependencies>
   <dependency>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-actuator</artifactId>
   </dependency>
   <dependency>
     <groupId>org.springframework.cloud</groupId>
     <artifactId>spring-cloud-starter-gateway</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-netflix-hystrix</artifactId>
   </dependency>
 
   <dependency>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-devtools</artifactId>
     <scope>runtime</scope>
   </dependency>
   <dependency>
     <groupId>org.projectlombok</groupId>
     <artifactId>lombok</artifactId>
     <optional>true</optional>
   </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>

gateway-service的配置文件,application.yml

spring:
 application:
  name: gateway-service
 cloud:    # spring cloud gateway 路由配置方式
  gateway:
   discovery:   #是否與服務(wù)發(fā)現(xiàn)組件進(jìn)行結(jié)合，通過(guò) serviceId(必須設(shè)置成大寫) 轉(zhuǎn)發(fā)到具體的服務(wù)實(shí)例。默認(rèn)為false，設(shè)為true便開啟通過(guò)服務(wù)中心的自動(dòng)根據(jù) serviceId 創(chuàng)建路由的功能。
    locator:   #路由訪問(wèn)方式：http://Gateway_HOST:Gateway_PORT/大寫的serviceId/**，其中微服務(wù)應(yīng)用名默認(rèn)大寫訪問(wèn)。
     enabled: true
   routes:
   - id: 163           #網(wǎng)關(guān)路由到網(wǎng)易官網(wǎng)
    uri: http://www.163.com/
    predicates:
     - Path=/163/**
#   - id: ORDER-SERVICE      #網(wǎng)關(guān)路由到訂單服務(wù)order-service
#    uri: lb://ORDER-SERVICE
#    predicates:
#     - Path=/ORDER-SERVICE/**
#   - id: USER-SERVICE      #網(wǎng)關(guān)路由到用戶服務(wù)user-service
#    uri: lb://USER-SERVICE
#    predicates:
#     - Pach=/USER-SERVICE/**
 
server:
 port: 5001
 
 
logging:
 level:
  org.springframework.cloud.gateway: trace
  org.springframework.http.server.reactive: debug
  org.springframework.web.reactive: debug
  reactor.ipc.netty: debug
 
 
eureka:
 client:
  service-url:
   defaultZone: http://localhost:5000/eureka/
 
feign:
 hystrix:
  enabled: true

gateway-service的啟動(dòng)類，Application

package com.sunvalley.demo;
 
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.gateway.route.RouteLocator;
import org.springframework.cloud.gateway.route.builder.RouteLocatorBuilder;
import org.springframework.context.annotation.Bean;
 
@SpringBootApplication
public class GatewayServiceApplication {
 
  /**
  * spring cloud gateway 配置方式之一，啟動(dòng)主程序配置，還有一種是配置文件配置
  * @param builder
  * @return
  */
  @Bean
  public RouteLocator customRouteLocator(RouteLocatorBuilder builder) {
   return builder.routes()
      .route(r -> r.path("/qq/**")
           .and()
           .uri("http://www.qq.com/"))
      .build();
  }
 
  public static void main(String[] args) {
   SpringApplication.run(GatewayServiceApplication.class, args);
  }
}

通過(guò)上面我們可以看到，gateway網(wǎng)關(guān)路由配置有兩種方式：

1.通過(guò)@Bean自定義RouteLocator，在啟動(dòng)主類Application中配置

2.在配置文件yml中配置

這兩種方式都可以實(shí)現(xiàn)網(wǎng)關(guān)路由是等價(jià)的，但是通常項(xiàng)目開發(fā)中會(huì)使用配置文件yml方式。

運(yùn)行測(cè)試：

訪問(wèn) http://localhost:8080/qq，路由轉(zhuǎn)發(fā)到 http://www.qq.com
訪問(wèn)http://localhost:8080/163, 路由轉(zhuǎn)發(fā)到 http://www.163.com

看完了這篇文章，相信你對(duì)“springboot2.0和springcloud Finchley版項(xiàng)目的搭建示例”有了一定的了解，如果想了解更多相關(guān)知識(shí)，歡迎關(guān)注億速云行業(yè)資訊頻道，感謝各位的閱讀！