[Java知识库]springboot 引入nacos

springboot 引入nacos

参考官网：
https://nacos.io/zh-cn/docs/quick-start-spring-cloud.html
依赖

            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
                <version>2.0.4.RELEASE</version>
            </dependency>

启动类bootstrap.yml

server:
  port: 8080
  servlet:
    context-path: /api

spring:
  profiles:
    active: dev
  servlet:
    multipart:
      max-file-size: 10MB
  application:
    name: lcem-server
  cloud:
    nacos:
      config:
        server-addr: XXXXX:8848
        namespace: f70658b1-8a35-42bc-a219-23a309456ce8
        group: DEFAULT_GROUP
        file-extension: yaml
        enabled: true
        refresh-enabled: true
        extension-configs:
          - data-id: application-dev.yml
            refresh: true
          - data-id: securedev.yml
            refresh: true


authEnabled: true

访问nacos网址：http://localhost:8080/nacos，初始用户名和密码都是nacos
nacos配置需要放入的配置文件：
我的data_id 就是我的文件名

获取配置：

@RestController
@RequestMapping("/config")
@RefreshScope
public class ConfigController {

    @Value("${useLocalCache:false}")
    private boolean useLocalCache;

    @RequestMapping("/get")
    public boolean get() {
        return useLocalCache;
    }
}

将读取出来的yml文件转换成对象

依赖：

            <dependency>
                <groupId>com.fasterxml.jackson.dataformat</groupId>
                <artifactId>jackson-dataformat-yaml</artifactId>
                <version>2.12.4</version>
            </dependency>
                        <dependency>
                <groupId>com.fasterxml.jackson.core</groupId>
                <artifactId>jackson-core</artifactId>
                <version>2.11.2</version>
            </dependency>

代码实现：

    @Value("${authConfigUrl:secure.yml}")
    private String secureUrl;//这是配置在nacos中的不同环境的配置
    
	@Value("${spring.cloud.nacos.config.server-addr}")
    private String SERVER_ADDR;

    @Value("${spring.cloud.nacos.config.namespace}")
    private String NAMESPACE;

    @Value("${spring.cloud.nacos.config.group}")
    private String GROUP;
 
/**
     * 使用NacosFactory 从nacos配置中心获取城市编码列表
     *
     * @return
     */
    @SneakyThrows
    public HashMap getCityCodeListByNacosFactory() {
        Properties properties = new Properties();
        // nacos服务器地址
        properties.put(PropertyKeyConst.SERVER_ADDR, SERVER_ADDR);
        // 配置中心的命名空间id
        properties.put(PropertyKeyConst.NAMESPACE, NAMESPACE);
        ConfigService configService = NacosFactory.createConfigService(properties);
        // 根据dataId、group定位到具体配置文件，获取其内容. 方法中的三个参数分别是: dataId, group, 超时时间
        String content = configService.getConfig(secureUrl, GROUP, 3000L);

        ObjectMapper mapper = new ObjectMapper(new YAMLFactory());
        mapper.findAndRegisterModules();
        HashMap hashMap = new HashMap();
        try {
            hashMap = mapper.readValue(content, HashMap.class);
            return hashMap;
        } catch (JsonProcessingException e) {
            e.printStackTrace();
        }
        return hashMap;

    }

多环境配置：
maven多环境配置
配置目录：

dev，uat，prod不同环境，这写配置是放在项目的pom文件中

<profiles>
        <profile>
            <!-- 本地开发环境 -->
            <id>dev</id>
            <properties>
                <profiles.active>dev</profiles.active>
                <deploy.url>http://localhost:8080/manager/text</deploy.url>
                <build-type>war</build-type>
            </properties>
            <activation>
                <activeByDefault>true</activeByDefault>
            </activation>
        </profile>

        <profile>
            <!-- 生产环境 -->
            <id>prod</id>
            <properties>
                <profiles.active>prod</profiles.active>
                <deploy.url>http://host:port/manager/text</deploy.url>
                <build-type>jar</build-type>
            </properties>
        </profile>

        <profile>
            <!-- uat环境 -->
            <id>uat</id>
            <properties>
                <profiles.active>uat</profiles.active>
                <deploy.url>http://host:port/manager/text</deploy.url>
                <build-type>jar</build-type>
            </properties>
        </profile>
    </profiles>

配置

<build>
        <resources>
            <resource>
                <directory>src/main/resources</directory>
                <!-- 资源根目录排除各环境的配置，使用单独的资源目录来指定 -->
                <excludes>
                    <exclude>prod/*</exclude>
                    <exclude>dev/*</exclude>
                    <exclude>uat/*</exclude>
                </excludes>
            </resource>
            <resource>
                <directory>src/main/resources/${profiles.active}</directory>
            </resource>

            <resource>
                <directory>../resources</directory>
                <!-- 资源根目录排除各环境的配置，使用单独的资源目录来指定 -->
                <excludes>
                    <exclude>prod/*</exclude>
                    <exclude>dev/*</exclude>
                    <exclude>uat/*</exclude>
                </excludes>
            </resource>
            <resource>
                <directory>../resources/${profiles.active}</directory>
            </resource>

            <resource>
                <directory>src/main/java</directory>
                <!-- java资源目录下的xml配置文件也打包 -->
                <includes>
                    <include>**/*.xml</include>
                    <include>**/*.wsdl</include>
                </includes>
            </resource>


        </resources>


        <pluginManagement>
            <plugins>

                <plugin>
                    <artifactId>maven-compiler-plugin</artifactId>
                    <configuration>
                        <source>1.8</source>
                        <target>1.8</target>
                        <encoding>UTF-8</encoding>
                    </configuration>
                </plugin>


                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-surefire-plugin</artifactId>
                    <configuration>
                        <skip>true</skip>
                    </configuration>
                </plugin>
            </plugins>
        </pluginManagement>


    </build>

idea本地启动成功，远程打包失败：
可以现本地打远程包看看内容

查看内容是否和自己预想的一致