如何通过注解读取springboot yml配置

要通过注解读取Spring Boot的YML配置，请按照以下步骤操作：

1. 首先，确保已经在项目中引入了Spring Boot和YAML相关的依赖。在pom.xml文件中添加以下依赖：

   <groupId>org.springframework.boot</groupId>    <artifactId>spring-boot-starter</artifactId> </dependency><dependency>    <groupId>org.springframework.boot</groupId>    <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency><dependency>    <groupId>org.springframework.boot</groupId>    <artifactId>spring-boot-starter-web</artifactId> </dependency><dependency>    <groupId>org.springframework.boot</groupId>    <artifactId>spring-boot-starter-mail</artifactId> </dependency><dependency>    <groupId>org.springframework.boot</groupId>    <artifactId>spring-boot-starter-freemarker</artifactId> </dependency><dependency>    <groupId>org.springframework.boot</groupId>    <artifactId>spring-boot-starter-jdbc</artifactId> </dependency><dependency>    <groupId>org.springframework.boot</groupId>    <artifactId>spring-boot-starter-security</artifactId> </dependency><dependency>    <groupId>org.springframework.boot</groupId>    <artifactId>spring-boot-starter-validation</artifactId> </dependency><dependency>    <groupId>org.springframework.boot</groupId>    <artifactId>spring-boot-starter-websocket</artifactId> </dependency><dependency>    <groupId>org.springframework.boot</groupId>    <artifactId>spring-boot-starter-actuator</artifactId> </dependency><dependency>    <groupId>org.springframework.boot</groupId>    <artifactId>spring-boot-devtools</artifactId>    <optional>true</optional> </dependency><dependency>    <groupId>org.yaml</groupId>    <artifactId>snakeyaml</artifactId> </dependency> 

2. 在src/main/resources目录下创建一个名为application.yml或application.properties的配置文件，并添加需要的配置信息。例如：

app:   name: MyApplication   version: 1.0.0 

3. 创建一个Java类，用于存储配置信息。使用@Configuration和@ConfigurationProperties注解标记这个类。例如：

import org.springframework.boot.context.properties.ConfigurationProperties; import org.springframework.context.annotation.Configuration;  @Configuration @ConfigurationProperties(prefix = "app") public class AppConfig {     private String name;     private String version;      // Getters and setters } 

4. 在需要使用配置信息的地方，使用@Autowired注解将AppConfig类注入到相应的类中。例如：

import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.RestController;  @RestController public class MyController {     @Autowired     private AppConfig appConfig;      @GetMapping("/config")     public String getConfig() {         return "Name: " + appConfig.getName() + ", Version: " + appConfig.getVersion();     } } 

现在，当你访问/config端点时，将会看到从YML配置文件中读取的配置信息。