从 Spring Boot 应用程序中的 properties.yml 文件中读取复杂值答案

【问题标题】：Read complex values from properties.yml file in spring boot application从 Spring Boot 应用程序中的 properties.yml 文件中读取复杂值
【发布时间】：2020-07-30 17:19:06
【问题描述】：

spring:
  profiles:
    active: dev
  data:
    mongodb:
      uri: mongodb://127.0.1:27017/FeteBird-Product
  kafka:
    bootstrapAddress: localhost:9092
    producer:
      key-serializer: org.springframework.kafka.support.serializer.JsonSerializer
      value-serializer: org.springframework.kafka.support.serializer.JsonSerializer
    consumer:
      key-deserializer: org.springframework.kafka.support.serializer.JsonDeserializer
      value-deserializer: org.springframework.kafka.support.serializer.JsonDeserializer
      auto-offset-reset: earliest
      properties:
        spring:
          json:
            trusted:
              packages: '*'

如何读取spring boot中的所有值，我知道我可以通过如下配置读取

@Configuration
@EnableConfigurationProperties
@ConfigurationProperties("demo")
public class Config {}

我不知道如何在其他类中创建属性和访问。

【问题讨论】：

标签： java spring spring-boot

【解决方案1】：

@Configuration
@EnableConfigurationProperties
@ConfigurationProperties(prefix = "spring")
public class ApplicationYmlConfiguration {
    private KafkaConfigurationYml kafka;

    public KafkaConfigurationYml getKafka() {
        return kafka;
    }

    public void setKafka(KafkaConfigurationYml kafka) {
        this.kafka = kafka;
    }
}


public class KafkaConfigurationYml {
    private String bootstrapAddress;

    public String getBootstrapAddress() {
        return bootstrapAddress;
    }

    public void setBootstrapAddress(String bootstrapAddress) {
        this.bootstrapAddress = bootstrapAddress;
    }
}

随时随地阅读

@Configuration
public class KafkaConfiguration {
    private ApplicationYmlConfiguration bootstrapAddress;

    public KafkaConfiguration(ApplicationYmlConfiguration bootstrapAddress) {
        this.bootstrapAddress = bootstrapAddress;
    }}

【讨论】：