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68.3. Nacos 配置中心/注册中心代码实例
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68.3. Nacos 配置中心/注册中心代码实例

68.3.1. Maven

			
<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>
	<groupId>cn.netkiller</groupId>
	<artifactId>bottleneck</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<name>bottleneck</name>
	<description>bottleneck</description>
	<organization>
		<name>Netkiller Spring Cloud 手札</name>
		<url>https://www.netkiller.cn</url>
	</organization>
	<developers>
		<developer>
			<name>Neo</name>
			<email>netkiller@msn.com</email>
			<organization>Netkiller Spring Cloud 手札</organization>
			<organizationUrl>https://www.netkiller.cn</organizationUrl>
			<roles>
				<role>Author</role>
			</roles>
		</developer>
	</developers>
	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>2.7.3</version>
		<relativePath />
	</parent>
	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
	</properties>
	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-web</artifactId>
			<!-- Exclude the Tomcat dependency -->
			<exclusions>
				<exclusion>
					<groupId>org.springframework.boot</groupId>
					<artifactId>spring-boot-starter-tomcat</artifactId>
				</exclusion>
			</exclusions>
		</dependency>
		<!-- Use Undertow instead Tomcat -->
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-undertow</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-webflux</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-jdbc</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-actuator</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-data-redis</artifactId>
			<exclusions>
				<exclusion>
					<groupId>io.lettuce</groupId>
					<artifactId>lettuce-core</artifactId>
				</exclusion>
			</exclusions>
		</dependency>
		<dependency>
			<groupId>redis.clients</groupId>
			<artifactId>jedis</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.data</groupId>
			<artifactId>spring-data-commons</artifactId>
		</dependency>
		<dependency>
			<groupId>org.projectlombok</groupId>
			<artifactId>lombok</artifactId>
		</dependency>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-data-elasticsearch</artifactId>
		</dependency>
		<dependency>
			<groupId>com.alibaba.cloud</groupId>
			<artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
			<version>2.2.9.RELEASE</version>
		</dependency>
		<dependency>
			<groupId>com.alibaba.cloud</groupId>
			<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
			<version>2.2.9.RELEASE</version>
		</dependency>

		<!-- https://mvnrepository.com/artifact/org.fluentd/fluent-logger -->
		<dependency>
			<groupId>org.fluentd</groupId>
			<artifactId>fluent-logger</artifactId>
			<version>0.3.4</version>
		</dependency>
		<dependency>
			<groupId>com.sndyuk</groupId>
			<artifactId>logback-more-appenders</artifactId>
			<version>1.8.7</version>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-context</artifactId>
			<version>3.1.4</version>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-commons</artifactId>
			<version>3.1.4</version>
		</dependency>
		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-loadbalancer</artifactId>
			<version>3.1.4</version>
		</dependency>

		<dependency>
			<groupId>org.springframework.cloud</groupId>
			<artifactId>spring-cloud-starter-bootstrap</artifactId>
			<version>3.1.4</version>
		</dependency>
	</dependencies>
	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
				<configuration>
					<mainClass>cn.netkiller.Application</mainClass>
				</configuration>
			</plugin>
			<plugin>
				<artifactId>maven-surefire-plugin</artifactId>
				<configuration>
					<skip>true</skip>
				</configuration>
			</plugin>

			<plugin>
				<groupId>com.spotify</groupId>
				<artifactId>docker-maven-plugin</artifactId>
				<version>1.2.2</version>
				<configuration>
					<imageName>netkiller/${project.artifactId}</imageName>
					<baseImage>openjdk:19-alpine</baseImage>
					<maintainer>netkiller@msn.com</maintainer>
					<volumes>/tmp</volumes>
					<workdir>/srv</workdir>
					<exposes>8080</exposes>
					<env>
						<JAVA_OPTS>-server -Xms128m -Xmx2048m</JAVA_OPTS>
					</env>
					<entryPoint>["sh", "-c", "java ${JAVA_OPTS} -jar /srv/${project.build.finalName}.jar ${SPRING_OPTS}"]</entryPoint>
					<resources>
						<resource>
							<targetPath>/srv</targetPath>
							<directory>${project.build.directory}</directory>
							<include>${project.build.finalName}.jar</include>
						</resource>
					</resources>
					<image>netkiller/${project.artifactId}</image>
					<newName>netkiller/${project.artifactId}:${project.version}</newName>
					<!-- <serverId>docker-hub</serverId> -->
					<registryUrl>http://${docker.registry}/v2/</registryUrl>
					<imageTags>
						<imageTag>undertow</imageTag>
						<!-- <imageTag>tomcat</imageTag> <imageTag>${project.version}</imageTag> <imageTag>latest</imageTag> -->
					</imageTags>
				</configuration>
			</plugin>
		</plugins>
	</build>
</project>

68.3.2. SpringBootApplication

			
package cn.netkiller;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;

@EnableDiscoveryClient
@SpringBootApplication
public class Application {

	public static void main(String[] args) {
		System.out.println("Netkiller bottleneck tool!");
		SpringApplication.run(Application.class, args);
	}
}

68.3.3. ConfigController

			
package cn.netkiller.controller;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.cloud.context.config.annotation.RefreshScope;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RefreshScope
@RestController
public class ConfigController {

	public ConfigController() {
		// TODO Auto-generated constructor stub
	}

	@Value("${key}")
	public String name;

	@GetMapping("/config")
	public String config() {

		String name = this.name;
		return name;
	}
}

68.3.4. 配置文件

			
#debug=true
server.port=8080

#server.tomcat.max-connections=10000
#server.tomcat.max-threads=4096
#server.tomcat.accept-count=1000
#server.tomcat.min-spare-threads=100

server.undertow.max-http-post-size=0 
server.undertow.io-threads=16
server.undertow.worker-threads=4096
server.undertow.buffer-size=1024
server.undertow.buffers-per-region=1024
server.undertow.direct-buffers=true

spring.application.name=bottleneck
spring.profiles.active=dev
#spring.profiles.active=test
##spring.profiles.active=prod
#
#logging.file.path=/tmp
##logging.file.name=spring.log
#
endpoints.metrics.enabled=true
management.endpoints.jmx.exposure.include=*
management.endpoints.web.exposure.include=*
management.endpoints.health.show-details=always
#
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.url=jdbc:mysql://172.18.200.5:3306/test?useUnicode=true&characterEncoding=UTF-8
spring.datasource.username=root
spring.datasource.password=passw0rd

spring.datasource.type=com.zaxxer.hikari.HikariDataSource
spring.datasource.hikari.minimum-idle=5
spring.datasource.hikari.maximum-pool-size=200
spring.datasource.hikari.auto-commit=true
spring.datasource.hikari.idle-timeout=30000
spring.datasource.hikari.pool-name=Hikari
spring.datasource.hikari.max-lifetime=55000
spring.datasource.hikari.connection-timeout=30000
spring.datasource.hikari.connection-test-query=SELECT 1

spring.redis.host=172.18.200.5
spring.redis.port=6379
spring.redis.password=passw0rd
spring.redis.database=0

spring.redis.jedis.pool.max-active=1000
spring.redis.jedis.pool.max-idle=80
spring.redis.jedis.pool.min-idle=20
spring.redis.jedis.pool.max-wait=-1

spring.cloud.nacos.server-addr=nacos.netkiller.cn:8848
spring.cloud.nacos.username=neo
spring.cloud.nacos.password=netkiller

#spring.cloud.nacos.config.enable-remote-sync-config=true
spring.cloud.nacos.config.namespace=${spring.profiles.active}
spring.cloud.nacos.config.group=DEFAULT_GROUP
spring.cloud.nacos.config.prefix=${spring.application.name}
spring.cloud.nacos.config.file-extension=yaml
spring.cloud.nacos.discovery.service=${spring.application.name:DEFAULT-SERVICE-NAME}
spring.cloud.nacos.discovery.namespace=${spring.profiles.active}
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