java - 在 application.properties 和 application.yaml 中合并相同的属性

Question

我有两个属性文件：application.properties：

spring.datasources[0].url = jdbc:postgresql://localhost:5432/earch
spring.datasources[0].username = postgres
spring.datasources[0].password = 
spring.dataSources[0].driver-class-name=org.postgresql.Driver
spring.dataSources[0].liquibase.enabled=false

spring.dataSources[1].tenantId=db4
spring.dataSources[1].url=jdbc:mysql://localhost:3306/test_liquibase?createDatabaseIfNotExist=true&allowPublicKeyRetrieval=true&useSSL=false&useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC
spring.dataSources[1].username=root
spring.dataSources[1].password=
spring.dataSources[1].driver-class-name=com.mysql.cj.jdbc.Driver
spring.dataSources[1].spring.jpa.hibernate.connection.charset=utf8
spring.dataSources[1].spring.jpa.hibernate.connection.useUnicode=true
spring.dataSources[1].spring.jpa.hibernate.ddl-auto=validate
spring.dataSources[1].spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL5InnoDBDialect
spring.dataSources[1].liquibase.enabled=true
spring.dataSources[1].liquibase.change-log=classpath:db/master/changelog/db.changelog-master.yaml

和 application.yaml：

spring:
 dataSources:
  - tenantId: db5
    url: jdbc:postgresql://localhost:5432/db4
    username: postgres
    password: 
    driver-class-name: org.postgresql.Driver
    liquibase:
      enabled: true
      change-log: classpath:db/yaml-change/changelog/db.changelog-master.yaml

和配置文件：

@Bean(name = "dataSources")
    @Primary
    public Map<Object, Object> getDataSources(DataSourceProperties dataSourceProperties) {
        return dataSourceProperties.getDataSources().stream().map(dataSourceProperty -> {
            DataSource dataSource = DataSourceBuilder.create()
                    .url(dataSourceProperty.getUrl())
                    .username(dataSourceProperty.getUsername())
                    .password(dataSourceProperty.getPassword())
                    .driverClassName(dataSourceProperty.getDriverClassName())
                    .build();
            return new TenantIdDataSource(dataSourceProperty.getTenantId(), dataSource);
        }).collect(Collectors.toMap(TenantIdDataSource::getTenantId, TenantIdDataSource::getDataSource));
    }

现在只解析 yaml 属性。如果删除 yaml 属性，则从 application.properties 解析属性

是否可以将此属性从两个文件合并到 dataSourceProperties？

标签： javaspring-boot

Answer 1

创建相同的 DataSourceProperties 类，例如 DSProps：

@Data
@Component
@ConfigurationProperties(prefix = "spring1")
@PropertySource({"application.yml"})
public class DSProps {

    private List<DataSourceProperty> dataSources = new LinkedList<>();
}

@Data
@Component
@ConfigurationProperties(prefix = "spring")
@PropertySource({"application.properties"})
public class DataSourceProperties {

    private List<DataSourceProperty> dataSources = new LinkedList<>();
}

并在 getDataSources 方法中添加一行：

dataSourceProperties.getDataSources().addAll(dsProps.getDataSources());

当然在 application.yaml 前缀必须不同