dom4jerror:Premature end of file.error:Premature end of file. Nested exception: Premature end of fi
dom4j error:Premature end of file.
error:Premature end of file. Nested exception: Premature end of file.
可能原因 BufferedReader 已经被读过，dom4j再读的时候就不是从头开始读，所以报错