spring实战笔记

Environment中获取配置

1. 方式一：直接getProperties获取

   String bootstrapServers = env.getProperty("hello.kafka.bootstrap-servers");
   

2. 方式二：将属性直接绑定到对象上

   BindResult kafkaProperties = Binder.get(env).bind("hello.kafka", TestKafkaProperties.class);
   

3. 具体Properties类编写

   @Data
   @ConfigurationProperties(prefix = "ldk.kafka")
   public class TestKafkaProperties implements Serializable {
   
   	private String bootstrapServers ;
   
   	private List<TestProducerProperties> producers = new ArrayList<>();
   
   	@Data
   	public static class TestProducerProperties implements Serializable {
   
   		private String username ;
   
   		private String password ;
   
   		private Integer retries = 0;
   
   		private Integer batchSize = 16384;
   
   		private Integer linger = 1;
   	}
   }
   

ate Integer linger = 1;
}
}
```