Nacos_04｜nacos-名称空间切换
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Maven3.6
Tomcat8.5
消费者
package com.atguigu.consumerdemo.controller;
import com.atguigu.consumerdemo.feign.ProviderClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class Hiconsumer {
@Autowired
private ProviderClient providerClient;
@GetMapping("/hi")
public String hi(){
String hello = this.providerClient.hello();
return "hi consumer,========="+hello;
}
}
package com.atguigu.consumerdemo.feign;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.GetMapping;
/**
* OpenFeign用法:
* 1.这是方法是一个接口;
* 2.注解括号里面的名字是提供者的服务名;
* 3.想调用哪个方法,就从提供者里面复制过来就行,不用复制实现;
* 4.然后在自己(消费者)的方法调用实现;
*/
@FeignClient("service-provider")
public interface ProviderClient {
@GetMapping("/hello")
public String hello();
}
package com.atguigu.consumerdemo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.openfeign.EnableFeignClients;
@SpringBootApplication
//@EnableDiscoveryClient 这个注解,在消费者这边是可以省略的
@EnableFeignClients
public class ConsumerDemoApplication {
public static void main(String[] args) {
SpringApplication.run(ConsumerDemoApplication.class, args);
}
}
server.port=8080
spring.application.name=service-consumer
### Nacos注册中心端口号
spring.cloud.nacos.discovery.server-addr=127.0.0.1:8848
<?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>2.2.6.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.atguigu</groupId>
<artifactId>consumer-demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>consumer-demo</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!--nacos服务中心-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
<version>0.2.2.RELEASE</version>
</dependency>
<!--openfeign,因为它是原生的,在springcloud里面已经有版本号,(注:这是消费者引入)-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-openfeign</artifactId>
</dependency>
<!--热部署-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</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>
<!-- SpringCloud的依赖 -->
<dependencyManagement>
<dependencies>
<!--spring cloud Hoxton.SR1-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Hoxton.SR1</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>
提供者
package com.atguigu.providerdemo.controller;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class HelloController {
@Value("${myName}")
private String myName;
@GetMapping("/hello")
public String hello(){
return "hello"+myName;
}
}
package com.atguigu.providerdemo;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
@SpringBootApplication
@EnableDiscoveryClient
public class ProviderDemoApplication {
public static void main(String[] args) {
SpringApplication.run(ProviderDemoApplication.class, args);
}
}
server.port=8070
### Nacos注册中心端口号
spring.cloud.nacos.discovery.server-addr=127.0.0.1:8848
### bootstrap.properties这配置文件被读取的优先级比application.properties要高
spring.cloud.nacos.config.server-addr=127.0.0.1:8848
### 如果是设置配置中心,那么这行配置就不能放在application.properties里面,放在这里,这是要先读取,才能被Data Id扫到
spring.application.name=service-provider
# .1
### 切换环境配置
spring.cloud.nacos.config.namespace=c66f32aa-0a1a-41ad-afb2-28578821b6d1
# .2
### 可以配置多个环境配置
# 开启动态刷新配置，配置下面这行代码之后,就可以不用重启服务器也能实现数据刷新;
spring.cloud.nacos.config.ext-config[0].refresh=true
spring.cloud.nacos.config.ext-config[0].data-id=jdbc.properties
spring.cloud.nacos.config.ext-config[1].refresh=true
spring.cloud.nacos.config.ext-config[1].data-id=redis.properties
<?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>2.2.6.RELEASE</version>
<relativePath/> <!-- 如果要用2.2.x版本的springboot,那么SpringCloud就要用H版本,否则可能会有版本问题出现 -->
</parent>
<groupId>com.atguigu</groupId>
<artifactId>provider-demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>provider-demo</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!--
nacos服务中心,
注意：版本 0.2.x.RELEASE 对应的是 Spring Boot 2.x 版本，版本 0.1.x.RELEASE 对应的是 Spring Boot 1.x 版本。
-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
<version>0.2.2.RELEASE</version>
</dependency>
<!--热部署-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</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>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-commons</artifactId>
<version>2.2.1.RELEASE</version>
<scope>compile</scope>
</dependency>
</dependencies>
<!-- SpringCloud的依赖 -->
<dependencyManagement>
<dependencies>
<!--spring cloud Hoxton.SR1-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Hoxton.SR1</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>
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