Nacos系列---【SpringCloudAlibaba集成Nacos】
1.查看版本对应关系
官网链接：https://github.com/alibaba/spring-cloud-alibaba/wiki/%E7%89%88%E6%9C%AC%E8%AF%B4%E6%98%8E
这里我以springcloudAlibaba的2021.0.5.0版本为例，展开详细介绍:
2.新建parent项目fast-cloud
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>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.6.13</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.fast</groupId>
<artifactId>fast-cloud</artifactId>
<version>1.0.0</version>
<packaging>pom</packaging>
<modules>
<module>fast-auth</module>
<module>fast-common</module>
<module>fast-gateway</module>
<module>fast-service</module>
<module>fast-service-api</module>
<module>fast-common-db</module>
</modules>
<properties>
<skipTests>true</skipTests>
<java.version>1.8</java.version>
<encoding>UTF-8</encoding>
<spring-boot.version>2.6.13</spring-boot.version>
<spring.cloud-version>2021.0.5</spring.cloud-version>
<spring-cloud-alibaba-version>2021.0.5.0</spring-cloud-alibaba-version>
<druid.version>1.2.16</druid.version>
<mybatis-plus-version>3.3.2</mybatis-plus-version>
<velocity-engine-version>2.3</velocity-engine-version>
<knife4j-version>2.0.9</knife4j-version>
<hutool-all.version>5.7.16</hutool-all.version>
</properties>
<dependencies>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
</dependencies>
<profiles>
<profile>
<id>dev</id>
<properties>
<!-- 环境标识，需要与Nacos的命名空间id相对应 -->
<profiles.active>dev</profiles.active>
<nacos.server>192.168.43.201:8848</nacos.server>
<!-- 注意：这里的变量要想在application.yml中引用，这里只能用常量赋值-->
<!--<nacos.group>${project.artifactId}</nacos.group>-->
<nacos.group>fast-cloud</nacos.group>
</properties>
<activation>
<!-- 默认环境 -->
<activeByDefault>true</activeByDefault>
</activation>
</profile>
<profile>
<id>prod</id>
<properties>
<!-- 环境标识，需要与Nacos的命名空间id相对应 -->
<profiles.active>prod</profiles.active>
<nacos.server>192.168.43.201:8848</nacos.server>
<!-- 注意：这里的变量要想在application.yml中引用，这里只能用常量赋值-->
<!--<nacos.group>${project.artifactId}</nacos.group>-->
<nacos.group>fast-cloud</nacos.group>
</properties>
</profile>
</profiles>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring.cloud-version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-alibaba-dependencies</artifactId>
<version>${spring-cloud-alibaba-version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>${druid.version}</version>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>${mybatis-plus-version}</version>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-generator</artifactId>
<version>${mybatis-plus-version}</version>
</dependency>
<dependency>
<groupId>org.apache.velocity</groupId>
<artifactId>velocity-engine-core</artifactId>
<version>${velocity-engine-version}</version>
</dependency>
<dependency>
<groupId>com.github.xiaoymin</groupId>
<artifactId>knife4j-spring-boot-starter</artifactId>
<version>${knife4j-version}</version>
</dependency>
<dependency>
<groupId>com.github.xiaoymin</groupId>
<artifactId>knife4j-micro-spring-boot-starter</artifactId>
<version>${knife4j-version}</version>
</dependency>
<dependency>
<groupId>cn.hutool</groupId>
<artifactId>hutool-all</artifactId>
<version>${hutool-all.version}</version>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
3.新建gateway
3.1pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.fast</groupId>
<artifactId>fast-cloud</artifactId>
<version>1.0.0</version>
</parent>
<groupId>com.gateway</groupId>
<artifactId>fast-gateway</artifactId>
<version>1.0.0</version>
<name>fast-gateway</name>
<dependencies>
<!--gateway依赖 -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-gateway</artifactId>
</dependency>
<!-- SpringCloud Alibaba Nacos -->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
</dependency>
<!-- SpringCloud Alibaba Nacos Config -->
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
</dependency>
<dependency>
<groupId>com.github.xiaoymin</groupId>
<artifactId>knife4j-spring-boot-starter</artifactId>
</dependency>
</dependencies>
</project>
3.2application.yml
spring:
profiles:
# 环境配置
active: @profiles.active@
application:
name: fast-gateway
config:
import: optional:nacos:${spring.application.name}.yml
cloud:
nacos:
namespace: ${spring.profiles.active}
server-addr: @nacos.server@
username: nacos
password: nacos
group: @nacos.group@
discovery:
# 注册组
group: ${spring.cloud.nacos.group}
namespace: ${spring.cloud.nacos.namespace}
config:
namespace: ${spring.cloud.nacos.namespace}
group: ${spring.cloud.nacos.group}
3.3FastGatewayApplication.java启动类
package com.gateway;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
@SpringBootApplication
@EnableDiscoveryClient
public class FastGatewayApplication {
public static void main(String[] args) {
SpringApplication.run(FastGatewayApplication.class, args);
}
}
3.4TestController.java
package com.gateway.controller;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.cloud.context.config.annotation.RefreshScope;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@Slf4j
@RestController
@RequestMapping("/test")
@RefreshScope
public class TestController {
@Value("${spring.name:lisi}")
private String name;
@GetMapping
public String test() {
return name;
}
}
4.项目概览
5.Nacos准备
5.1.新建dev命名空间，命名空间名称和ID都叫dev。
5.2.打开配置项列表，在dev命名空间下新增dataId为fast-gateway.yml文件，与3.2的application.yml中的spring.config.import: optional:nacos:${spring.application.name}.yml保持一致，group也要保持一致。（内容添加:spring.name: wangwu123456）
5.3.启动网关项目，访问test接口，在nacos里修改spring.name的值，再访问test接口，发现值变了，说明集成nacos成功了。
愿你走出半生，归来仍是少年！