说明：  Dorado 中Chart、RichEditor、Jasperreports、多文件或文件夹上传开发教程，包含dorado中关于饼图各种分析的的开发讲解
(Dorado in the Chart, RichEditor, Jasperreports, upload multiple files or folders development tutorials, including dorado on a pie chart to explain the development of various analysis)