springcloud的eureka集群

其他 2020-01-23 11:18:05 阅读次数: 0

使用的版本

springcloud版本：Greenwich.SR1
springboot 版本：2.1.6.RELEASE

项目目录

在这里插入图片描述

eureka集群 peer1

pom.xml

<?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>2.1.6.RELEASE</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<groupId>com.wuk</groupId>
	<artifactId>movie-service-eureka-peer1</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>movie-service-eureka-peer1</name>
	<description>Demo project for Spring Boot</description>

	<properties>
		<java.version>1.8</java.version>
		<spring-cloud.version>Greenwich.SR1</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>

application.yml

server:
  port: 8761
spring:
  application:
    name: peer1
eureka:
  client:
    register-with-eureka: false #是否注册到eureka上 
    fetch-registry: true #获取注册表（eureka集群时候用到）
    service-url:
      defaultZone: http://peer2:8762/eureka #配置eureka的server的注册地址
  instance:
    hostname: peer1

启动类

package com.wuk;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
@EnableEurekaServer
@SpringBootApplication
public class MovieServiceEurekaPeer1Application {

	public static void main(String[] args) {
		SpringApplication.run(MovieServiceEurekaPeer1Application.class, args);
	}

}

eureka集群 peer2

application.yml

server:
  port: 8762
spring:
  application:
    name: peer2
eureka:
  client:
    register-with-eureka: false #是否注册到eureka上 
    fetch-registry: true #获取注册表（eureka集群时候用到）
    service-url:
      defaultZone: http://peer1:8761/eureka #配置eureka的server的注册地址
  instance:
    hostname: peer2

其他的文件都和peer1一致。
注意：
要在host里面配置peer1和peer2
C:\Windows\System32\drivers\etc\hosts

127.0.0.1 peer1 peer2

服务者 movie-service-user

pom.xml

<?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>2.1.6.RELEASE</version>
		<!-- <version>1.4.3.RELEASE</version> -->
		<relativePath /> <!-- lookup parent from repository -->
	</parent>
	<groupId>com.wuk</groupId>
	<artifactId>movie-service-user</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>movie-service-user</name>
	<description>Demo project for Spring Boot</description>

	<properties>
		<java.version>1.8</java.version>
		<spring-cloud.version>Greenwich.SR1</spring-cloud.version>
	</properties>

	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-data-jpa</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-actuator</artifactId>
		</dependency>
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>5.1.47</version>
			<scope>runtime</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-devtools</artifactId>
		</dependency>
		<dependency>
			<groupId>org.projectlombok</groupId>
			<artifactId>lombok</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
		</dependency>
		<dependency>
			<groupId>com.zaxxer</groupId>
			<artifactId>HikariCP</artifactId>
			<version>3.3.1</version>
		</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>

application.yml

server:
  port: 8000
spring:
  application: 
    name: movie-service-user
  jpa:
    show-sql: true
    hibernate:
      ddl-auto: none
    database: MYSQL
  datasource:
    url: jdbc:mysql://127.0.0.1:3306/movieservice
    username: root
    password: root
    driver-class-name: com.mysql.jdbc.Driver  
    type: com.zaxxer.hikari.HikariDataSource
    hikari: 
      minimum-idle: 20
      maximum-pool-size: 60
      max-lifetime: 180000
      auto-commit: true
      idle-timeout: 30000
      pool-name: DatebookHikariCP
      connection-test-query: SELECT 1
      connection-timeout: 30000
    #schema: classpath:sql/user.sql
    #data: classpath:sql/data.sql
logging:
  level:
    root: info
    com.wuk: debug
eureka: 
  client:
    service-url:
       defaultZone:  http://peer1:8761/eureka, http://peer2:8762/eureka
  instance:
    prefer-ip-address: true #表示将自己的ip注册到Eureka上面    
    instance-id: movie-service-user:8000

启动类

package com.wuk;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
@EnableEurekaClient
@SpringBootApplication
public class MovieServiceUserApplication {

	public static void main(String[] args) {
		SpringApplication.run(MovieServiceUserApplication.class, args);
	}

}

User.ajva

package com.wuk.domain;

import java.io.Serializable;
import java.math.BigDecimal;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;

import com.fasterxml.jackson.annotation.JsonIgnoreProperties;

import lombok.Data;

@Data
@Entity
@JsonIgnoreProperties(value = { "hibernateLazyInitializer", "handler" })
public class User implements Serializable{

	@Id
	@GeneratedValue(strategy=GenerationType.AUTO)
	private Long id;
	@Column
	private String username;
	@Column
	private String name;
	@Column
	private Integer age;
	@Column
	private BigDecimal balance;
	
}

注意：
如果访问报错：
No serializer found for class org.hibernate.proxy.pojo.bytebuddy.ByteBuddyInterceptor
加上如下注解
@JsonIgnoreProperties(value = { “hibernateLazyInitializer”, “handler” })

UserController.java

package com.wuk.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;

import com.wuk.dao.UserRepository;
import com.wuk.domain.User;

import lombok.extern.slf4j.Slf4j;

@Slf4j
@RestController
public class UserController {

	@Autowired
	private UserRepository userRepository;
	
	@GetMapping("/{id}")
	public User findById(@PathVariable Long id) {
		
		User user = userRepository.getOne(id);
		log.info("user={}",user);
		return user;
	}
}

UserRepository.java

package com.wuk.dao;

import org.springframework.data.jpa.repository.JpaRepository;

import com.wuk.domain.User;

public interface UserRepository extends JpaRepository<User, Long>{

}

消费者

pom.xml

<?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>2.1.6.RELEASE</version>
		<relativePath/> <!-- lookup parent from repository -->
	</parent>
	<groupId>com.wuk</groupId>
	<artifactId>movie-service-movie</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>movie-service-movie</name>
	<description>Demo project for Spring Boot</description>

	<properties>
		<java.version>1.8</java.version>
		<spring-cloud.version>Greenwich.SR1</spring-cloud.version>
	</properties>

	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-devtools</artifactId>
		</dependency>
		<dependency>
			<groupId>org.projectlombok</groupId>
			<artifactId>lombok</artifactId>
		</dependency>
		<dependency>
	        <groupId>com.zaxxer</groupId>
	        <artifactId>HikariCP</artifactId>
	        <version>3.3.1</version>
    	</dependency>
    	 <dependency>
		     <groupId>org.springframework.cloud</groupId>
		     <artifactId>spring-cloud-netflix-ribbon</artifactId>
		   </dependency>
		   <dependency>
		     <groupId>org.springframework.cloud</groupId>
		     <artifactId>spring-cloud-starter-config</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>
	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>

</project>

注意这两个特别重要
在这里插入图片描述

application.yml

server:
  port: 8010
spring:
  application:
    name: movie-service-movie
eureka:
  client:
    service-url:
       defaultZone:  http://peer1:8761/eureka, http://peer2:8762/eureka 
  instance:
    prefer-ip-address: true #表示将自己的ip注册到Eureka上面
    instance-id: movie-service-movie:8010

ConfigBean.java

package com.wuk.config;

import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.client.RestTemplate;

@Configuration
public class ConfigBean {
	/**
	 * RestTemplate提供了多种便捷访问远程Http服务的方法， 
		是一种简单便捷的访问restful服务模板类，是Spring提供的用于访问Rest服务的客户端模板工具集
	 */
	@Bean
	@LoadBalanced//获取rest时候加入Ribbon的配置
	public RestTemplate getRestTemplate() {
		return new RestTemplate();
	}

}

UserController.java

package com.wuk.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import com.wuk.domain.User;

import lombok.extern.slf4j.Slf4j;

@Slf4j
@RestController
public class UserController {

	@Autowired
	private RestTemplate restTemplate;
	private String URL="http://movie-service-user:8000"; 
	
	@GetMapping("/{id}")
	public User findById(@PathVariable Long id) {
		
		log.info(URL+"/1");
		User user=restTemplate.getForObject(URL+"/1", User.class);
		return user;
	}
}

请求访问：

在这里插入图片描述

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