Nacos Four: config configuration center

nacos Instead eureka + config good things, of course, use the config

 1, set up the project, attach pom file

<?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.hcj</groupId>
    <artifactId>nacos-config</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>nacos-config</name>
    <description>Demo project for Spring Boot</description>
 
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.9.RELEASE</version>
        <relativePath/>
    </parent>
 
    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>Edgware.SR5</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>0.1.0.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>
 
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
        </dependency>
    </dependencies>
 
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
 
</project>

2. Create a profile bootstrap.properties 

spring.cloud.nacos.config.server-addr=127.0.0.1:8848
 
spring.application.name=nacos-config
server.port=1909

Many small partners contacted spring boot project, spring cloud projects all the time with application.properties or .yml file as a configuration file, here why use the bootstrap configuration file it? Take a look: 

 3. Create controller, calling in the config configuration items

@RestController
@RequestMapping("/config")
@RefreshScope
public class ConfigController {
 
    @Value("${useLocalCache:false}")
    private boolean useLocalCache;
 
    @RequestMapping("/get")
    public boolean get() {
        return useLocalCache;
    }
}

Note:

1. Spring Cloud native notes @RefreshScope achieve Configure Automatic Updates
2. No need to modify the main function
3. Do not worry at this time to start the project, config have not configured where's the configuration items read?

4, draw the focus - Added config configuration item to nacos server

There are two ways to add nacos server configuration items:

4.1, calling  Nacos Open API  released to Nacos Server Configuration 

First, by calling  Nacos Open API  released to Nacos Server Configuration: dataId to nacos-config.properties, group as the default, content useLocalCache = true 

curl -X POST "http://127.0.0.1:8848/nacos/v1/cs/configs?dataId=nacos-config.properties&group=DEFAULT_GROUP&content=useLocalCache=true"

4.2, using Nacos Server visual interfaces published to Nacos Server Configuration 

 

 

Then click publish, we can be in the configuration management Nacos Server - see our newly added configuration item configuration list 

 

5, start the service, call interface configuration item to check whether to read  

访问：http://localhost:1909/config/get 

 

6, of course Nacos Server UI can also modify, delete, add configuration items

At this point you're done!