Nacos微服务获取配置

1.新建nacos配置

 

 

 

 

 

 2.新建maven项目

一个父工程nacos-config-demo,2个module服务

 父工程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>

    <groupId>com.leo.nacos</groupId>
    <artifactId>nacos-config-demo</artifactId>
    <packaging>pom</packaging>
    <version>1.0-SNAPSHOT</version>
    <modules>
        <module>service1</module>
        <module>service2</module>
    </modules>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>2.1.0.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Greenwich.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>2.1.3.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>2.6.0</version>
            </plugin>
        </plugins>
    </build>
</project>

service1

（1）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">
    <parent>
        <artifactId>nacos-config-demo</artifactId>
        <groupId>com.leo.nacos</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>service1</artifactId>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>
    <dependencies>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    </dependencies>
</project>

（2）配置 bootstrap.yml

server:
  port: 56010

spring:
  application:
    name: service1
  cloud:
    nacos:
      config:
        server-addr: 127.0.0.1:8848,127.0.0.1:8849,127.0.0.1:8850
        file-extension: yaml
        namespace: 0c74cab7-f503-4fa8-af6d-25a5b65f598c
        group: TEST_GROUP
        ext-config[0]:
          data-id: ext-config-db.properties
        ext-config[1]:
            data-id: ext-config-redis.properties
            group: GLOBAL_GROUP
        ext-config[2]:
          data-id: ext-config-refresh.properties
          group: REFRESH_GROUP
          refresh: true # 支持动态刷新

（3）启动类

package com.simon.nacos.serviceone;


import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@SpringBootApplication
@RestController
public class ServiceOneBootstrap {

    @Autowired
    ConfigurableApplicationContext applicationContext;

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

    @GetMapping("/configs")
    public String getConfigs()
    {
        return applicationContext.getEnvironment().getProperty("common.name");
    }

    @GetMapping("/configs2")
    public String getConfigs2()
    {
        String dbUsername = applicationContext.getEnvironment().getProperty("database.username");
        String dbPassword = applicationContext.getEnvironment().getProperty("database.password");
        String redisHost = applicationContext.getEnvironment().getProperty("redis.host");
        String redisPort = applicationContext.getEnvironment().getProperty("redis.port");
        String refresh = applicationContext.getEnvironment().getProperty("ext.name");

        return dbUsername + dbPassword + redisHost + redisPort + refresh;
    }
}

service2

（1）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">
    <parent>
        <artifactId>nacos-config-demo</artifactId>
        <groupId>com.leo.nacos</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>service2</artifactId>

    <properties>
        <maven.compiler.source>8</maven.compiler.source>
        <maven.compiler.target>8</maven.compiler.target>
    </properties>
    <dependencies>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    </dependencies>
</project>

service2

（2）配置bootstrap.yml

server:
  port: 56020

spring:
  application:
    name: service2
  cloud:
    nacos:
      config:
        server-addr: 127.0.0.1:8848
        file-extension: yaml
        namespace: 0c74cab7-f503-4fa8-af6d-25a5b65f598c
        group: TEST_GROUP

（3）启动类

package com.simon.nacos.servicetwo;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ConfigurableApplicationContext;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@SpringBootApplication
@RestController
public class ServiceTwoBootstrap {

    @Autowired
    ConfigurableApplicationContext applicationContext;

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

    @GetMapping("/configs")
    public String getConfigs()
    {
        return applicationContext.getEnvironment().getProperty("common.name");
    }
}

3.测试结果