1、修复导出文档后缀错误的BUG

2、增加自定义导出文档的头部

models/book_result.go

@@ -263,6 +263,9 @@ func (m *BookResult) Converter(sessionId string) (ConvertBookResult, error) {
 		Toc:          tocList,
 		More:         []string{},
 	}
+	if m.Publisher != "" {
+		ebookConfig.Footer = "\"<p style='color:#8E8E8E;font-size:12px;'>本文档由 <span style='text-decoration:none;color:#1abc9c;font-weight:bold;'>"+ m.Publisher +"</span> 生成<span style='float:right'>- _PAGENUM_ -</span></p>\""
+	}
 
 	if tempOutputPath, err = filepath.Abs(tempOutputPath); err != nil {
 		beego.Error("导出目录配置错误：" + err.Error())