使用nacos做配置中心，data id配置为java包名时，启动时解析配置异常

[chuntaojun]

Issue Description

Type: bug report

Describe what happened (or what feature you want)

https://github.com/nacos-group/nacos-spring-boot-project/issues/125

Describe what you expected to happen

How to reproduce it (as minimally and precisely as possible)

Tell us your environment

Anything else we need to know?

[wangweizZZ]

因为NacosUtils.readTypeFromDataId() 的优先级 比 properties.type().getType()高，但是如果优先properties.type().getType()，因为 ConfigType存在默认值 ConfigType.PROPERTIES,data id文件后缀的逻辑就不存在，这样的逻辑是否正确？不太明白是否需要readTypeFromDataId的逻辑

[chuntaojun]

https://github.com/nacos-group/nacos-spring-project/issues/201

[chuntaojun]

https://github.com/nacos-group/nacos-spring-project/issues/202