CKEditor与dotnetcore实现图片上传功能

本文实例为大家分享了CKEditor与dotnetcore实现图片上传的具体代码，供大家参考，具体内容如下

CKEditor的使用

1.引入js库

<script src="https://cdn.ckeditor.com/4.6.1/standard-all/ckeditor.js"></script> 

2.定义一个textarea标签

<textarea id="editor">
 </textarea> 

3.用CkEditor替换textarea即可使用基本功能

CKEDITOR.replace('editor'); 

4.配置CkEditor

添加图片上传，代码插入工具

CKEDITOR.replace('editor-box', {
 //GitHub地址：https://github.com/ckeditor 
 toolbar: [
 { name: 'document', items: ['Source'] },
 { name: 'basicstyles', items: ['Bold', 'Italic'] },
 { name: 'paragraph', items: ['NumberedList', 'BulletedList', '-', 'Outdent', 'Indent', '-', 'Blockquote'] },
 { name: 'links', items: ['Link', 'Unlink'] },
 { name: 'insert', items: ['Image','CodeSnippet'] },
 { name: 'styles', items: ['Format', 'Styles'] }
 ],
 filebrowserImageUploadUrl: '/Blogs/UploadImageUrl', //配置图片上传后台Url 
 customConfig: '', 
 extraPlugins: 'codesnippet,image2,uploadimage', 
 removePlugins: 'image', 
 //mathJaxLib: 'https://cdn.mathjax.org/mathjax/2.6-latest/MathJax.js?config=TeX-AMS_HTML', 
 codeSnippet_theme: 'ir_black',
 height: 450, 
 contentsCss: ['https://cdn.ckeditor.com/4.6.1/standard-all/contents.css'], 
 format_tags: 'p;h1;h2;h3;pre', 
 removeDialogTabs: 'image:advanced;link:advanced;link:target', 
 stylesSet: [
 /* Inline Styles */
 { name: 'Marker', element: 'span', attributes: { 'class': 'marker' } },
 { name: 'Cited Work', element: 'cite' },
 { name: 'Inline Quotation', element: 'q' },
 /* Object Styles */
 {
 name: 'Special Container',
 element: 'div',
 styles: {
 padding: '5px 10px',
 background: '#eee',
 border: '1px solid #ccc'
 }
 },
 {
 name: 'Compact table',
 element: 'table',
 attributes: {
 cellpadding: '5',
 cellspacing: '0',
 border: '1',
 bordercolor: '#ccc'
 },
 styles: {
 'border-collapse': 'collapse'
 }
 },
 { name: 'Borderless Table', element: 'table', styles: { 'border-style': 'hidden', 'background-color': '#E6E6FA' } },
 { name: 'Square Bulleted List', element: 'ul', styles: { 'list-style-type': 'square' } },
 /* Widget Styles */
 { name: 'Illustration', type: 'widget', widget: 'image', attributes: { 'class': 'image-illustration' } },
 { name: 'Featured snippet', type: 'widget', widget: 'codeSnippet', attributes: { 'class': 'code-featured' } },
 { name: 'Featured formula', type: 'widget', widget: 'mathjax', attributes: { 'class': 'math-featured' } }
 ]
 });

5.后台接收图片

/// <summary>
 /// 图片上传
 /// </summary>
 /// <param name="env"></param>
 /// <returns></returns>
 public async Task<IActionResult> UploadImageUrl([FromServices]IHostingEnvironment env)
 {
 // CKEditor提交的很重要的一个参数 
 string callback = Request.Query["CKEditorFuncNum"];
 var form = Request.Form;
 var img = form.Files[0]; //获取图片
 string fileName = img.FileName;
 var openReadStream = img.OpenReadStream();
 byte[] buff = new byte[openReadStream.Length];
 await openReadStream.ReadAsync(buff, 0, buff.Length);
 string filenameGuid = Guid.NewGuid().ToString();
 var bowerPath = PathUtils.GetSavePath(filenameGuid, true) + ".jpg";//获取到图片保存的路径，这边根据自己的实现
 var savePath = Path.Combine(env.WebRootPath, bowerPath);
 using (FileStream fs = new FileStream(savePath, FileMode.Create))
 {
 await fs.WriteAsync(buff, 0, buff.Length);
 //服务器返回JavaScript脚本
 string result = $"<script type=\"text/javascript\">window.parent.CKEDITOR.tools.callFunction(\"{callback}\", \"{"/"+bowerPath}\", \"\");</script>";
 Response.ContentType = "text/html;charset=UTF-8";
 return Content(result);
 }
 }
 

6.注意

服务器返回需要加上这个，否则会遇到前端页面不执行返回的JavaScript脚本的问题

Response.ContentType = "text/html;charset=UTF-8";

配置完成即可使用图片上传功能