nacos 示例

lab-44/lab-44-nacos-config-demo/pom.xml

@@ -0,0 +1,30 @@
+<?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">
+    <parent>
+        <groupId>org.springframework.boot</groupId>
+        <artifactId>spring-boot-starter-parent</artifactId>
+        <version>2.2.2.RELEASE</version>
+        <relativePath/> <!-- lookup parent from repository -->
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>lab-44-nacos-config-demo</artifactId>
+
+    <dependencies>
+        <!-- Spring Boot Starter 基础依赖 -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter</artifactId>
+        </dependency>
+
+        <!-- 实现对 Nacos 作为配置中心的自动化配置 -->
+        <dependency>
+            <groupId>com.alibaba.boot</groupId>
+            <artifactId>nacos-config-spring-boot-starter</artifactId>
+            <version>0.2.4</version>
+        </dependency>
+    </dependencies>
+
+</project>

lab-44/lab-44-nacos-config-demo/src/main/java/cn/iocoder/springboot/lab44/nacosdemo/Application.java

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+package cn.iocoder.springboot.lab44.nacosdemo;
+
+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.boot.CommandLineRunner;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.stereotype.Component;
+
+@SpringBootApplication
+// @NacosPropertySource(dataId = "example", type = ConfigType.YAML)
+public class Application {
+
+    public static void main(String[] args) {
+        SpringApplication.run(Application.class, args);
+    }
+
+    @Component
+    public class OrderPropertiesCommandLineRunner implements CommandLineRunner {
+
+        private final Logger logger = LoggerFactory.getLogger(getClass());
+
+        @Autowired
+        private OrderProperties orderProperties;
+
+        @Override
+        public void run(String... args) {
+            logger.info("payTimeoutSeconds:" + orderProperties.getPayTimeoutSeconds());
+            logger.info("createFrequencySeconds:" + orderProperties.getCreateFrequencySeconds());
+        }
+
+    }
+
+    @Component
+    public class ValueCommandLineRunner implements CommandLineRunner {
+
+        private final Logger logger = LoggerFactory.getLogger(getClass());
+
+//        @NacosValue(value = "${order.pay-timeout-seconds}")
+        @Value(value = "${order.pay-timeout-seconds}")
+        private Integer payTimeoutSeconds;
+
+//        @NacosValue(value = "${order.pay-timeout-seconds}")
+        @Value(value = "${order.pay-timeout-seconds}")
+        private Integer createFrequencySeconds;
+
+        @Override
+        public void run(String... args) {
+            logger.info("payTimeoutSeconds:" + payTimeoutSeconds);
+            logger.info("createFrequencySeconds:" + createFrequencySeconds);
+        }
+    }
+
+}

lab-44/lab-44-nacos-config-demo/src/main/java/cn/iocoder/springboot/lab44/nacosdemo/OrderProperties.java

@@ -0,0 +1,53 @@
+package cn.iocoder.springboot.lab44.nacosdemo;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.stereotype.Component;
+
+@Component
+//@NacosConfigurationProperties(prefix = "order", dataId = "${nacos.config.data-id}", type = ConfigType.YAML)
+@ConfigurationProperties(prefix = "order")
+public class OrderProperties {
+
+    /**
+     * 订单支付超时时长，单位：秒。
+     */
+    private Integer payTimeoutSeconds;
+
+    /**
+     * 订单创建频率，单位：秒
+     */
+    private Integer createFrequencySeconds;
+
+//    /**
+//     * 配置描述
+//     */
+//    private String desc;
+
+    public Integer getPayTimeoutSeconds() {
+        return payTimeoutSeconds;
+    }
+
+    public OrderProperties setPayTimeoutSeconds(Integer payTimeoutSeconds) {
+        this.payTimeoutSeconds = payTimeoutSeconds;
+        return this;
+    }
+
+    public Integer getCreateFrequencySeconds() {
+        return createFrequencySeconds;
+    }
+
+    public OrderProperties setCreateFrequencySeconds(Integer createFrequencySeconds) {
+        this.createFrequencySeconds = createFrequencySeconds;
+        return this;
+    }
+
+//    public String getDesc() {
+//        return desc;
+//    }
+//
+//    public OrderProperties setDesc(String desc) {
+//        this.desc = desc;
+//        return this;
+//    }
+
+}

lab-44/lab-44-nacos-config-demo/src/main/resources/application.yaml

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+# Nacos 配置项，对应 NacosConfigProperties 配置类
+nacos:
+  config:
+    server-addr: 127.0.0.1:18848 # Nacos 服务器地址
+    data-id: example # 使用的 Nacos 配置集的 dataId
+    type: YAML # 使用的 Nacos 配置集的配置格式
+    bootstrap:
+      enable: true # 是否开启 Nacos 配置预加载功能

lab-44/pom.xml

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+<?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">
+    <parent>
+        <artifactId>labs-parent</artifactId>
+        <groupId>cn.iocoder.springboot.labs</groupId>
+        <version>1.0-SNAPSHOT</version>
+    </parent>
+    <modelVersion>4.0.0</modelVersion>
+
+    <artifactId>lab-44</artifactId>
+    <packaging>pom</packaging>
+    <modules>
+        <module>lab-44-nacos-config-demo</module>
+    </modules>
+
+
+</project>

pom.xml

@@ -52,6 +52,7 @@
         <module>lab-41</module>
         <module>lab-42</module>
         <module>lab-43</module>
+        <module>lab-44</module>
     </modules>