错误信息如下：
Caused by: org.yaml.snakeyaml.error.YAMLException: java.io.IOException: Stream closed
at org.yaml.snakeyaml.reader.StreamReader.update(StreamReader.java:200)
at org.yaml.snakeyaml.reader.StreamReader.<init>(StreamReader.java:60)
at org.yaml.snakeyaml.Yaml.load(Yaml.java:412)
at com.config.ConfigProvider.<init>(ConfigProvider.java:20)
... 49 more
Caused by: java.io.IOException: Stream closed
at java.io.PushbackInputStream.ensureOpen(PushbackInputStream.java:57)
at java.io.PushbackInputStream.read(PushbackInputStream.java:149)
at org.yaml.snakeyaml.reader.UnicodeReader.init(UnicodeReader.java:90)
at org.yaml.snakeyaml.reader.UnicodeReader.read(UnicodeReader.java:122)
at java.io.Reader.read(Reader.java:123)
at org.yaml.snakeyaml.reader.StreamReader.update(StreamReader.java:184)
... 55 more
解决方案：
吼吼，犯了一个低级错误呢，有可能是你的项目刚执行了maven clean ,忘记 install 了。
重新install一次即可。
