07.LoT.UI 前后台通用框架分解系列之——轻巧的文本编辑器

LoT.UI汇总：http://www.cnblogs.com/dunitian/p/4822808.html#lotui

上次说的是强大的百度编辑器 http://www.cnblogs.com/dunitian/p/5551701.html 这次说下简洁版而又不失功能的WangEditor

先看看效果

基本上常用功能都有了，下面说下完整的demo：

前端案例：

<!DOCTYPE html>
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>WangEditor</title>
    <meta charset="utf-8" />
    <link href="Script/WangEditor/css/wangEditor.min.css" rel="stylesheet" />
</head>
<body>
    <div id="edit" style="min-height:20em"></div>
    <br />
    <input id="btn1" type="button" value="获取HTML" />  
    <input id="btn2" type="button" value="获取Text" />
    <div id="msg"></div>
    <script src="//cdn.bootcss.com/jquery/1.10.2/jquery.min.js"></script>
    <script src="Script/jquery-1.8.3.min.js"></script>
    <script src="Script/WangEditor/js/wangEditor.min.js"></script>
    <script type="text/javascript">        
        var editor = new wangEditor('edit');       
        // 上传图片路径
        editor.config.uploadImgUrl = '/Home/Upload';
        // 设置统一参数名
        editor.config.uploadImgFileName = 'file';       
        //编辑器创建
        editor.create();
 
        $('#btn1').click(function () {
            // 获取编辑器区域完整html代码
            var html = editor.$txt.html();
            $('#msg').html(html);
        });
 
        $('#btn2').click(function () {
            // 获取编辑器纯文本内容
            var text = editor.$txt.text();
            // 获取格式化后的纯文本
            //var formatText = editor.$txt.formatText();
            $('#msg').html(text);
        });
    </script>
</body>
</html>

后端代码：（自己写的，如果有什么问题欢迎联系我）

/// <summary>
        /// 图片上传
        /// </summary>
        /// <returns></returns>
        public ContentResult Upload(HttpPostedFileBase file)
        {
            if (file == null) { return Content("error|文件不能为空"); }
            if (file.ContentLength > 10485760) { return Content("error|文件10M以内"); }
            //如果是上传文件，再添加其他格式即可
            string filterStr = ".gif,.jpg,.jpeg,.bmp,.png";
            string fileExt = Path.GetExtension(file.FileName).ToLower();
            if (!filterStr.Contains(fileExt)) { return Content("error|文件后缀不对"); }
            //防止黑客恶意绕过，从根本上判断下文件后缀
            if (!file.InputStream.CheckingExt())
            {
                //todo：一次危险记录
                return Content("error|文件后缀不对");
            }
 
            //todo: md5判断一下文件是否已经上传过,如果已经上传直接返回 return Content(缩略图地址#sqlPath);
 
            string path = string.Format("{0}/{1}", "/lotFiles", DateTime.Now.ToString("yyyy-MM-dd"));
            string fileName = string.Format("{0}{1}", Guid.NewGuid().ToString("N"), fileExt);
            string sqlPath = string.Format("{0}/{1}", path, fileName);
            string dirPath = Request.MapPath(path);
            if (!Directory.Exists(dirPath)) { Directory.CreateDirectory(dirPath); }
            try
            {
                //todo：未来写缩略图的代码
                file.SaveAs(Path.Combine(dirPath, fileName));
                //todo: 未来写存数据库的Code
            }
            catch { return Content("error|文件保存失败"); }
            return Content(string.Format("{0}#{1}", sqlPath, sqlPath));//第一个sqlPath以后换成缩略图的地址
        }

/// <summary>
    /// 判断扩展名是否是指定类型---默认是判断图片格式，符合返回true（没有释放stream，请手动：file.InputStream.Dispose();）
    /// eg：图片+压缩+文档："7173", "255216", "6677", "13780", "8297", "55122", "8075", "208207"
    /// eg：img，"7173", "255216", "6677", "13780" //gif  //jpg  //bmp //png
    /// eg：file,"8297", "55122", "8075", "208207" //rar //7z //zip + 文档系列
    /// </summary>
    /// <param name="stream">文件流</param>
    /// <param name="fileTypes">文件扩展名</param>
    /// <returns></returns>
    public static bool CheckingExt(this Stream stream, params string[] fileTypes)
    {
        if (fileTypes == null || fileTypes.Length == 0) { fileTypes = new string[] { "7173", "255216", "6677", "13780" }; }
        bool result = false;
        string fileclass = "";
 
        #region 读取头两个字节
        var reader = new BinaryReader(stream);
        byte[] buff = new byte[2];
        try
        {
            reader.Read(buff, 0, 2);//读取每个文件的头两个字节
            fileclass = buff[0].ToString() + buff[1].ToString();
        }
        catch (System.Exception ex) { stream.Dispose(); reader.Dispose(); return false; }
        #endregion
 
        #region 校验
        for (int i = 0; i < fileTypes.Length; i++)
        {
            if (fileclass == fileTypes[i])
            {
                result = true;
                break;
            }
        }
        #endregion
        return result;
    }