單節點Eureka註冊中心搭建

Eureka Server相關配置

1、Maven 引入相關的依賴：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 https://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>2.2.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.springboot.media.eureka.server</groupId>
    <artifactId>media-eureka-server</artifactId>
    <version>1.0.0</version>
    <name>media-eureka-server</name>
    <description>Eureka project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
        <spring-cloud.version>Hoxton.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>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </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>

2、啓動類添加@EnableEurekaServer註解

package com.springboot.media.eureka.server;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;

@SpringBootApplication
@EnableEurekaServer
public class MediaEurekaServerApplication {

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

}

3、配置文件application.properties

server.port=19980
# 設置微服務部署服務器IP地址
eureka.instance.hostname=${spring.cloud.client.ip-address}
# 是否註冊到Eureka Server，默認爲true。單節點Eureka Server可設置爲false
eureka.client.register-with-eureka=false
# 是否從Eureka Server獲取註冊信息，默認爲true。單節點Eureka Server可設置爲false
eureka.client.fetch-registry=false
# 微服務註冊到註冊中心的服務名稱以及調用名稱
#spring.application.name=media-eureka-server
# 表示eureka client發送心跳給server端的頻率。如果在leaseExpirationDurationInSeconds後，server端沒有收到client的心跳，則將摘除該instance，默認30秒
#eureka.instance.lease-renewal-interval-in-seconds=10
# 表示eureka server至上一次收到client的心跳之後，等待下一次心跳的超時時間，在這個時間內若沒收到下一次心跳，則將移除該instance，默認爲90秒
eureka.instance.lease-expiration-duration-in-seconds=20
#表示eureka client間隔多久去拉取服務註冊信息，默認爲30秒，如果要迅速獲取服務註冊狀態，可以縮小該值，比如5秒
#eureka.client.registry-fetch-interval-seconds=5
eureka.client.service-url.defaultZone=http://${spring.cloud.client.ip-address}:${server.port}/eureka/

Eureka Client相關配置

1、Maven 引入相關的依賴：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 https://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>2.2.2.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.springboot.media.permission.authentication</groupId>
    <artifactId>media-permission-authentication</artifactId>
    <version>1.0.0</version>
    <name>media-permission-authentication</name>
    <description>Demo project for Spring Boot</description>

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

    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
            <!--解決JSON數據返回XML格式的問題-->
            <exclusions>
                <exclusion>
                    <groupId>com.fasterxml.jackson.dataformat</groupId>
                    <artifactId>jackson-dataformat-xml</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-ribbon</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </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>

2、啓動類添加@EnableEurekaClient註解

package com.springboot.media.permission.authentication;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.transaction.annotation.EnableTransactionManagement;

@SpringBootApplication
@EnableEurekaClient
public class MediaPermissionAuthenticationApplication {

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

}

3、配置文件application.properties

# 微服務註冊到註冊中心的服務名稱以及調用名稱
spring.application.name=media-permission-authentication
# 將IP註冊到eureka中，如果爲false默認註冊主機名，和配置eureka.instance.hostname=${spring.cloud.client.ip-address}任選其一
eureka.instance.prefer-ip-address=true
#eureka.instance.hostname=127.0.0.1
# 設置註冊到eureka上的名字
eureka.instance.instance-id=${spring.cloud.client.ip-address}:${server.port}
# 是否註冊到Eureka Server，默認爲true。單節點Eureka Server可設置爲false
eureka.client.register-with-eureka=true
# 是否從Eureka Server獲取註冊信息，默認爲true。單節點Eureka Server可設置爲false
eureka.client.fetch-registry=true
# 表示eureka client發送心跳給server端的頻率。如果在leaseExpirationDurationInSeconds後，server端沒有收到client的心跳，則將摘除該instance，默認30秒
eureka.instance.lease-renewal-interval-in-seconds=10
#表示eureka client間隔多久去拉取服務註冊信息，默認爲30秒，如果要迅速獲取服務註冊狀態，可以縮小該值，比如5秒
eureka.client.registry-fetch-interval-seconds=5
# 設置需要連接的註冊中心，多個可用逗號隔開
eureka.client.service-url.defaultZone=http://127.0.0.1:19980/eureka/