Java优学网SpringBoot配置绑定解析：轻松掌握配置注入技巧，告别配置错误烦恼

@ConfigurationProperties(prefix = "app.datasource") @Component public class DataSourceConfig {

private String url;
private String username;
private String password;
private int maxConnections;

// 省略getter和setter方法

}

@SpringBootApplication @EnableConfigurationProperties(DataSourceConfig.class) public class Application {

public static void main(String[] args) {
    SpringApplication.run(Application.class, args);
}

}

// 配置类 @ConfigurationProperties(prefix = "datasource") public class DataSourceConfig {

private String url;

}

// application.yml data-source: # 错误的前缀 url: jdbc:mysql://localhost:3306/test

// 用户服务配置 @ConfigurationProperties(prefix = "user.service") @Component public class UserServiceConfig {

private int maxLoginAttempts;
private Duration sessionTimeout;
private List<String> allowedDomains;

}

// 数据库配置
@ConfigurationProperties(prefix = "database") @Component public class DatabaseConfig {

private String url;
private String username;
private PoolConfig pool;

// 内嵌配置类
public static class PoolConfig {
    private int maxSize;
    private int minSize;
}

}