使用Aspose把office文件转换为Html文件及生成文件浏览乱码的解决

使用Aspose把office文件转换为Html 文件转换方法如下：

        /// 

        /// office文件转换为Html
        /// 
        /// 扩展名
        /// 源文件路径
        /// 目标文件
        /// 
        public static string FileToHtmlFile(string extFileName, string sourceFile, string desFile)
        {
            if (string.IsNullOrEmpty(sourceFile))
            {
                return "0";//没有文件
            }

            switch (extFileName.ToUpper())
            {
                case "PPT":
                case "PPTX":
                    Aspose.Slides.Presentation ppt = new Aspose.Slides.Presentation(sourceFile);
                    ppt.Save(desFile, Aspose.Slides.Export.SaveFormat.Html);
                    break;
                case "DOC":
                case "DOCX":
                    Aspose.Words.Document doc = new Aspose.Words.Document(sourceFile);
                    doc.Save(desFile, Aspose.Words.SaveFormat.Html);
                    break;
                //case "XLS":
                    //case "XLSX":
                   //    break;
            }
            return "ok";
        }

PPT文件生成的html 会出现编码识别错误 导致浏览器网页乱码

解决方法如下，

                System.IO.StreamReader sr = new System.IO.StreamReader(strFilePath);
                string html = sr.ReadToEnd();
                sr.Close();
                System.IO.StreamWriter sw = new System.IO.StreamWriter(strFilePath, false);
                //System.IO.StreamWriter sw = new System.IO.StreamWriter(strFilePath, false, Encoding.UTF8);
                //特别重要：添加编码标志，解决浏览器识别错误
                html = html.Replace("", "");
                //去除试用标志
                html = html.Replace("Evaluation only", "");
                html = html.Replace("Created with Aspose.Slides for .NET 2.0 14.8.1.0.", "");
                html = html.Replace("Copyright 2004-2014 Aspose Pty Ltd.", "");
                //html = html.Replace("Evaluation Only. Created with Aspose.Words. Copyright 2003-2014 Aspose Pty Ltd.", "");
                html = html.Replace("Evaluation Only. Created with Aspose.Words. Copyright 2003-2014 Aspose Pty Ltd.", "");
                html = html.Replace("This document was truncated here because it was created using Aspose.Words in Evaluation Mode.", "");
                // < meta http - equiv = "X-UA-Compatible" content = "IE=9" >< meta http - equiv = "Content-Type" content = "text/html; charset=utf-8" />
                sw.Write(html);
                sw.Close();