说明：  1.按下面要求合理建立图形界面。 2.选择一个文件，把文件中的文本显示到文本框中 3.点击分析按钮 把此文章的averageWordLength，typeTokenRatio，numberOfWords，averageSentenceLength显示在图形里面了 4.合理编写异常反馈代码
(1. According to the following requirements set up reasonable graphical interface. 2. Select a file, the file of text into the text box 3. Click the analyze button Put this article averageWordLength, typeTokenRatio numberOfWords, averageSentenceLength show in the graph 4. Reasonable abnormal feedback code)