(1). spring-cloud-nacos-provider项目结构
spring-cloud-nacos-provider
├── pom.xml
├── src
│ ├── main
│ │ ├── java
│ │ │ └── help
│ │ │ └── lixin
│ │ │ └── samples
│ │ │ ├── ProviderApplication.java
│ │ │ └── controller
│ │ │ └── HelloController.java
│ │ └── resources
│ │ ├── bootstrap.properties
│ │ └── logback-spring.xml
│ └── test
│ ├── java
│ │ └── help
│ │ └── lixin
│ │ └── samples
│ └── resources
└── target
(2). 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>help.lixin</groupId>
<artifactId>spring-colue-nacos-provider</artifactId>
<packaging>jar</packaging>
<version>1.1.0</version>
<name>spring-cloud-nacos-provider ${project.version}</name>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencyManagement>
<dependencies>
<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>2.1.0.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-netflix</artifactId>
<version>2.1.1.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-alibaba-dependencies</artifactId>
<version>2.1.2.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.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<mainClass>help.lixin.samples.ProviderApplication</mainClass>
</configuration>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
(3). bootstrap.properties
server.port=8080
# 注意:配置文件加载的优先级为:
# spring.application.name > spring.cloud.nacos.config.ext-config > spring.cloud.nacos.config.shared-configs
# 指定DataId,nacos默认的dataId是:
# spring.application.name + spring.cloud.nacos.config.file-extension
# 该例中是:test-provider.properties
spring.application.name=test-provider
# nacos配置地址
spring.cloud.nacos.config.server-addr=127.0.0.1:8848
# 配置内容的数据格式
spring.cloud.nacos.config.file-extension=properties
# 指定namespace
spring.cloud.nacos.config.namespace=45a6112b-a866-4e92-a8d6-9e440bcdebbe
# 指定group(建议group直接指向项目组)
spring.cloud.nacos.config.group=erp:test-provider
# 分析: com.alibaba.cloud.nacos.NacosConfigProperties$Config
# 只有三个属性:dataId/group/refresh,所以,扩展data-id,不支持:namespace
# 扩展data-id
spring.cloud.nacos.config.ext-config[0].dataId=datasource.properties
spring.cloud.nacos.config.ext-config[0].group=common
spring.cloud.nacos.config.ext-config[0].refresh=true
# 也可以这样配置
#spring.cloud.nacos.config.shared-configs[0].dataId=datasource.properties
#spring.cloud.nacos.config.shared-configs[0].group=common
#spring.cloud.nacos.config.shared-configs[0].refresh=true
# 不建议这样配置,因为它不支持:group,也就意味着,这样配置group=DEFAULT_GROUP
# spring.cloud.nacos.config.shared-dataids=datasource.properties,datasource-2.properties
# spring.cloud.nacos.config.refreshable-dataids=dataids=datasource.properties
# nacos注册中心地址
spring.cloud.nacos.discovery.server-addr=${spring.cloud.nacos.config.server-addr:127.0.0.1:8848}
# 指定namespace
spring.cloud.nacos.discovery.namespace=45a6112b-a866-4e92-a8d6-9e440bcdebbe
# nacos注册中心group(不建议配置,或者:统一好一个group)
#spring.cloud.nacos.discovery.group=erp:test-provider
(4). HelloController
package help.lixin.samples.controller;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.cloud.context.config.annotation.RefreshScope;
import org.springframework.core.env.Environment;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
@RefreshScope
public class HelloController {
private Logger logger = LoggerFactory.getLogger(HelloController.class);
@Value("${useLocalCache:false}")
private boolean useLocalCache;
@Autowired
private Environment env;
@GetMapping("/hello")
public String hello() {
String jdbcurl = env.getProperty("spring.datasource.url", "");
logger.debug("useLocalCache", useLocalCache);
return "Hello World!!! " + useLocalCache + " jdbcUrl:" + jdbcurl;
}
}
(5). ProviderApplication
package help.lixin.samples;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
@EnableDiscoveryClient
@SpringBootApplication
public class ProviderApplication {
public static void main(String[] args) throws Exception {
SpringApplication.run(ProviderApplication.class, args);
}
}
(6). 项目源码下载
“spring-cloud-nacos-provider.zip”
(7). 启动服务并查看nacos
