* `prefix` default value is `spring.application.name` value, which can also be configured via the configuration item `spring.cloud.nacos.config.prefix`.
* `spring.active.profile` is the profile corresponding to the current environment. For details, please refer to [Spring Boot Doc](https://docs.spring.io/spring-boot/docs/current/reference/html/boot-features-profiles.html#boot-features-profiles)
**Note: when the activeprofile is empty, the corresponding connector `-` will also not exist, and the splicing format of the dataId becomes `${prefix}`.`${context.type}`**
**Note: when the activeprofile is empty, the corresponding connector `-` will also not exist, and the splicing format of the dataId becomes `${prefix}`.`${file-extension}`**
* `content-type` is the data format of the configuration content, which can be configured by the configuration item `spring.cloud.nacos.config.content-type`.
* `file-extension` is the data format of the configuration content, which can be configured by the configuration item `spring.cloud.nacos.config.file-extension`.
Currently only the `properties` type is supported.
timeout|spring.cloud.nacos.config.timeout|3000|Get the configuration timeout period,unit is ms
namespace|spring.cloud.nacos.config.namespace||One of the common scenarios is the separation of the configuration of different environments, such as the development of the test environment and the resource isolation of the production environment.