Word文件上传转换成Html

原创

jhtchina 2021-08-04 16:18:57 博主文章分类：Asp.Net ©著作权

文章标签 html 上传 microsoft 字节数上传文件 文章分类 代码人生

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首先声明文章不是原创，摘抄网络的。

增加

Microsoft.Office.Interop.Word.dll引用。前台页面代码：

代码

<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs" Inherits="_Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>页面上传</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
       <input id="File1" type="file" runat="server" />
        <asp:Button ID="btnUpload" runat="server"  Text="上传转换"
            onclick="btnUpload_Click" />

    </div>
    </form>
</body>
</html>

后台代码：

代码

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class _Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    //public WordToHTML() { }

    //上传文件并转换为html wordToHtml(wordFilePath)
    ///<summary>
    ///上传文件并转存为html
    ///</summary>
    ///<param name="wordFilePath">word文档在客户机的位置</param>
    ///<returns>上传的html文件的地址</returns>
    public string wordToHtml(System.Web.UI.HtmlControls.HtmlInputFile wordFilePath)
    {
        Microsoft.Office.Interop.Word.ApplicationClass word = new Microsoft.Office.Interop.Word.ApplicationClass();
        Type wordType = word.GetType();
        Microsoft.Office.Interop.Word.Documents docs = word.Documents;

        // 打开文件
        Type docsType = docs.GetType();

        //应当先把文件上传至服务器然后再解析文件为html
        string filePath = uploadWord(wordFilePath);

        //判断是否上传文件成功
        if (filePath == "0")
            return "0";
        //判断是否为word文件
        if (filePath == "1")
            return "1";

        object fileName = filePath;

        Microsoft.Office.Interop.Word.Document doc = (Microsoft.Office.Interop.Word.Document)docsType.InvokeMember("Open",
        System.Reflection.BindingFlags.InvokeMethod, null, docs, new Object[] { fileName, true, true });

        // 转换格式，另存为html
        Type docType = doc.GetType();

        string filename = System.DateTime.Now.Year.ToString() + System.DateTime.Now.Month.ToString() + System.DateTime.Now.Day.ToString() +
        System.DateTime.Now.Hour.ToString() + System.DateTime.Now.Minute.ToString() + System.DateTime.Now.Second.ToString();

        //被转换的html文档保存的位置
        string ConfigPath = HttpContext.Current.Server.MapPath("html/" + filename + ".html");
        object saveFileName = ConfigPath;


        /*下面是Microsoft Word 9 Object Library的写法，如果是10，可能写成：
         * docType.InvokeMember("SaveAs", System.Reflection.BindingFlags.InvokeMethod,
         * null, doc, new object[]{saveFileName, Word.WdSaveFormat.wdFormatFilteredHTML});
         * 其它格式：
         * wdFormatHTML
         * wdFormatDocument
         * wdFormatDOSText
         * wdFormatDOSTextLineBreaks
         * wdFormatEncodedText
         * wdFormatRTF
         * wdFormatTemplate
         * wdFormatText
         * wdFormatTextLineBreaks
         * wdFormatUnicodeText
         */
        docType.InvokeMember("SaveAs", System.Reflection.BindingFlags.InvokeMethod,
        null, doc, new object[] { saveFileName, Microsoft.Office.Interop.Word.WdSaveFormat.wdFormatFilteredHTML });

        //关闭文档
        docType.InvokeMember("Close", System.Reflection.BindingFlags.InvokeMethod,
        null, doc, new object[] { null, null,null });

        // 退出 Word
        wordType.InvokeMember("Quit", System.Reflection.BindingFlags.InvokeMethod, null, word, null);
        //转到新生成的页面
        return ("/" + filename + ".html");
    }

      public string uploadWord(System.Web.UI.HtmlControls.HtmlInputFile uploadFiles)
    {
        if (uploadFiles.PostedFile != null)
        {
            string fileName = uploadFiles.PostedFile.FileName;
            int extendNameIndex = fileName.LastIndexOf(".");
            string extendName = fileName.Substring(extendNameIndex);
            string newName = "";
            try
            {
                //验证是否为word格式
                if (extendName == ".doc")
                {

                    DateTime now = DateTime.Now;
                    newName = now.DayOfYear.ToString() + uploadFiles.PostedFile.ContentLength.ToString();
                    //上传路径指当前上传页面的同一级的目录下面的wordTmp路径
                    uploadFiles.PostedFile.SaveAs(System.Web.HttpContext.Current.Server.MapPath("wordTmp/" + newName + extendName));
                }
                else
                {
                    return "1";
                }
            }
            catch
            {
                return "0";
            }
            //return "http://" + HttpContext.Current.Request.Url.Host + HttpContext.Current.Request.ApplicationPath + "/wordTmp/" + newName + extendName;
            return System.Web.HttpContext.Current.Server.MapPath("wordTmp/" + newName + extendName);
        }
       else
        {
            return "0";
        }
    }

    protected void btnUpload_Click(object sender, EventArgs e)
    {
        try
        {
            //上传
            //uploadWord(File1);
            //转换
            wordToHtml(File1);
        }
        catch (Exception ex)
        {
            throw ex;
        }
        finally
        {
            Response.Write("恭喜，转换成功！");
        }

    }
}

Word大小限制，限制Word文件大小为300k

<system.web>
<httpRuntime maxRequestLength="300" executionTimeout="3600" />
</system.web>

增加Global.asax文件，进行文件大小限制

代码

<%@ Application Language="C#" %>
<%@ Import Namespace="System.Web.Configuration" %>

<script runat="server">

    void Application_Start(object sender, EventArgs e)
    {
        //在应用程序启动时运行的代码

    }

    protected void Application_BeginRequest(object sender, EventArgs e)
    {

        //本代码的功能是检查页面请求的大小，如果超过了配置文件maxRequestLength的设定值，就提示用户超过了所允许的文件大小。

        //从配置文件里得到配置的允许上传的文件大小
        HttpRuntimeSection runTime = (HttpRuntimeSection)WebConfigurationManager.GetSection("system.web/httpRuntime");

        //maxRequestLength 为整个页面的大小，不仅仅是上传文件的大小，所以扣除 100KB 的大小，
        //maxRequestLength单位为KB
        int maxRequestLength = (runTime.MaxRequestLength - 100) * 1024;

        //当前请求上下文的HttpApplication实例
        HttpContext context = ((HttpApplication)sender).Context;

        //判断请求的内容长度是否超过了设置的字节数
        if (context.Request.ContentLength > maxRequestLength)
        {
            //得到服务对象
            IServiceProvider provider = (IServiceProvider)context;
            HttpWorkerRequest workerRequest = (HttpWorkerRequest)provider.GetService(typeof(HttpWorkerRequest));

            //检查请求是否包含正文数据
            if (workerRequest.HasEntityBody())
            {
                //请求正文数据的长度
                int requestLength = workerRequest.GetTotalEntityBodyLength();
                //得到加载的初始字节数
                int initialBytes = 0;
                if (workerRequest.GetPreloadedEntityBody() != null)
                    initialBytes = workerRequest.GetPreloadedEntityBody().Length;

                //检查是否所有请求数据可用
                if (!workerRequest.IsEntireEntityBodyIsPreloaded())
                {
                    byte[] buffer = new byte[512000];
                    //设置要接收的字节数为初始字节数
                    int receivedBytes = initialBytes;
                    //读取数据，并把所有读取的字节数加起来，判断总的大小
                    while (requestLength - receivedBytes >= initialBytes)
                    {
                        //读取下一块字节
                        initialBytes = workerRequest.ReadEntityBody(buffer, buffer.Length);
                        //更新接收到的字节数
                        receivedBytes += initialBytes;
                    }
                    initialBytes = workerRequest.ReadEntityBody(buffer, requestLength - receivedBytes);
                }
            }
            //请求重定向到上载页面，并给用户提示信息。
            context.Response.Redirect(this.Request.Url.LocalPath + "?error=" + Server.UrlEncode("您上传的文件超过了允许的大小。"));
        }

    }



    void Application_End(object sender, EventArgs e)
    {
        //在应用程序关闭时运行的代码

    }

    void Application_Error(object sender, EventArgs e)
    {
        //在出现未处理的错误时运行的代码

    }

    void Session_Start(object sender, EventArgs e)
    {
        //在新会话启动时运行的代码

    }

    void Session_End(object sender, EventArgs e)
    {
        //在会话结束时运行的代码。
        // 注意: 只有在 Web.config 文件中的 sessionstate 模式设置为
        // InProc 时，才会引发 Session_End 事件。如果会话模式
        //设置为 StateServer 或 SQLServer，则不会引发该事件。

    }

</script>