在Asp.Net Core中配置使用MarkDown富文本编辑器实现图片上传和截图上传(开源代码.net core3.0)
我们的富文本编辑器不能没有图片上传尤其是截图上传,下面我来教大家怎么实现MarkDown富文本编辑器截图上传和图片上传。
1.配置编辑器到html页
<div id="test-editormd"> <textarea id="articleContent" style="display: none;">@Html.Raw(Model.Context)</textarea> </div>
2.初始化需要配置图片上传
$(function () { testEditor = editormd("test-editormd", { width: "99%", height: 640, syncScrolling: "single", path: "/Lib/MarkDown/lib/", saveHTMLToTextarea: true, emoji: true, //图片上传 imageUpload: true, imageFormats: ["jpg", "jpeg", "gif", "png", "bmp", "webp"], imageUploadURL: "/Editor/UpImage/@Model.Id" }); });
3.截图上传功能添加
$("#test-editormd").on('paste', function (ev) { var items = (event.clipboardData || event.originalEvent.clipboardData).items; for (var index in items) { var item = items[index]; if (item.kind === 'file') { var blob = item.getAsFile(); var reader = new FileReader(); reader.onload = function (event) { //将剪切板中复制信息转换成一种base64格式字符串 var base64 = event.target.result; //ajax上传图片 $.ajax({ url: "/Editor/UpladFilePIC/@Model.Id", type: 'post', data: { 'base': base64}, async: false, dataType: 'json', success: function (res) { if(res.code==1)//新一行的图片显示 testEditor.insertValue("\n![" + "image.png" + "](" + res.msg + ")"); }, error: function () { alert('图片上传错误'); } }); } }; // data url! var url = reader.readAsDataURL(blob); } });
4.后台实现图片保存
(1)截图保存
[HttpPost] public string UpladFilePIC(long? id)//id传过来,如需保存可以备用 { IFormCollection fc = HttpContext.Request.Form; string savePath = string.Empty; int code = 0; string msg = ""; string base64 = fc["base"]; if (base64 != null) { string[] spl = base64.Split(','); string getImgFormat = spl[0].Split(':')[1].Split('/')[1].Split(';')[0]; byte[] arr2 = Convert.FromBase64String(spl[1]); //上传到服务器 DateTime today = DateTime.Today; string md5 = CommonHelper.CalcMD5(spl[1]); string upFileName = md5 + "." + getImgFormat;//生成随机文件名( System.Guid.NewGuid().ToString() ) var pathStart = ConfigHelper.GetSectionValue("FileMap:ImgPath") + DateTime.Now.Year + "/" + DateTime.Now.Month + "/"; if (System.IO.Directory.Exists(pathStart) == false)//如果不存在新建 { System.IO.Directory.CreateDirectory(pathStart); } var filePath = pathStart + upFileName; string pathNew = ConfigHelper.GetSectionValue("FileMap:ImgWeb") + filePath.Replace(ConfigHelper.GetSectionValue("FileMap:ImgPath"), ""); using (MemoryStream memoryStream = new MemoryStream(arr2, 0, arr2.Length)) { memoryStream.Write(arr2, 0, arr2.Length); System.DrawingCore.Image image = System.DrawingCore.Image.FromStream(memoryStream);// 转成图片 image.Save(filePath); // 将图片存到本地 code = 1; msg = pathNew; } } string jsonResult = CommonHelper.GetJsonResult(code, msg); return jsonResult; }
(2)上传保存
public JsonResult UpImage(long? id)//id传过来,如需保存可以备用 { int success = 0; string msg = ""; string pathNew = ""; try { var date = Request; var files = Request.Form.Files; foreach (var formFile in files) { if (formFile.Length > 0) { string fileExt = formFile.FileName.Substring(formFile.FileName.LastIndexOf(".") + 1, (formFile.FileName.Length - formFile.FileName.LastIndexOf(".") - 1)); //扩展名 long fileSize = formFile.Length; //获得文件大小,以字节为单位 string md5 = CommonHelper.CalcMD5(formFile.OpenReadStream()); string newFileName = md5 + "." + fileExt; //MD5加密生成文件名保证文件不会重复上传 var pathStart = ConfigHelper.GetSectionValue("FileMap:ImgPath") + DateTime.Now.Year + "/" + DateTime.Now.Month + "/"; if (System.IO.Directory.Exists(pathStart) == false)//如果不存在新建 { System.IO.Directory.CreateDirectory(pathStart); } var filePath = pathStart + newFileName; pathNew = ConfigHelper.GetSectionValue("FileMap:ImgWeb") + filePath.Replace(ConfigHelper.GetSectionValue("FileMap:ImgPath"), ""); using (var stream = new FileStream(filePath, FileMode.Create)) { formFile.CopyTo(stream); success = 1; } } } } catch (Exception ex) { success = 0; msg = ex.ToString(); } var obj = new { success = success, url = pathNew, message = msg }; return Json(obj); }
5.效果图
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1.在Asp.Net或.Net Core中配置使用MarkDown富文本编辑器有开源模板代码(代码是.net core3.0版本)
开源地址 动动小手,点个推荐吧!
注意:我们机遇屋该项目将长期为大家提供asp.net core各种好用demo,旨在帮助.net开发者提升竞争力和开发速度,建议尽早收藏该模板集合项目。