UEditor富文本，文件服务端与文本UI编辑端分离，单图片上传成功，但UI编辑端提示上传错误解决方法

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首次发布：2024-08-27

配置ueditor.all.js文件24507行的方法

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domUtils.on(input, 'change', function(){
                if(!input.value) return;
                var loadingId = 'loading_' + (+new Date()).toString(36);
                var params = utils.serializeParam(me.queryCommandValue('serverparam')) || '';
                var imageActionUrl = me.getActionUrl(me.getOpt('imageActionName'));
                var allowFiles = me.getOpt('imageAllowFiles');
                me.focus();
                me.execCommand('inserthtml', '');
                function callback(){
                    try{
                        var link, json, loader,
                            body = (iframe.contentDocument || iframe.contentWindow.document).body,
                            result = body.innerText || body.textContent || '';
                        json = (new Function("return " + result))();
                        link = me.options.imageUrlPrefix + json.url;
                        if(json.state == 'SUCCESS' && json.url) {
                            loader = me.document.getElementById(loadingId);
                            loader.setAttribute('src', link);
                            loader.setAttribute('_src', link);
                            loader.setAttribute('title', json.title || '');
                            loader.setAttribute('alt', json.original || '');
                            loader.removeAttribute('id');
                            domUtils.removeClasses(loader, 'loadingclass');
                        } else {
                            showErrorLoader && showErrorLoader(json.state);
                        }
                    }catch(er){
                        showErrorLoader && showErrorLoader(me.getLang('simpleupload.loadError'));
                    }
                    form.reset();
                    domUtils.un(iframe, 'load', callback);
                }
                function showErrorLoader(title){
                    if(loadingId) {
                        var loader = me.document.getElementById(loadingId);
                        loader && domUtils.remove(loader);
                        me.fireEvent('showmessage', {
                            'id': loadingId,
                            'content': title,
                            'type': 'error',
                            'timeout': 4000
                        });
                    }
                }
                /* 判断后端配置是否没有加载成功 */
                if (!me.getOpt('imageActionName')) {
                    errorHandler(me.getLang('autoupload.errorLoadConfig'));
                    return;
                }
                // 判断文件格式是否错误
                var filename = input.value,
                    fileext = filename ? filename.substr(filename.lastIndexOf('.')):'';
                if (!fileext || (allowFiles && (allowFiles.join('') + '.').indexOf(fileext.toLowerCase() + '.') == -1)) {
                    showErrorLoader(me.getLang('simpleupload.exceedTypeError'));
                    return;
                }
                domUtils.on(iframe, 'load', callback);
                form.action = utils.formatUrl(imageActionUrl + (imageActionUrl.indexOf('?') == -1 ? '?':'&') + params);
                form.submit();
            });

替换成

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domUtils.on(input, 'change', function() {
             
              if(!input.value) return;
              var loadingId = 'loading_' + (+new Date()).toString(36);
              var imageActionUrl = me.getActionUrl(me.getOpt('imageActionName'));
              var allowFiles = me.getOpt('imageAllowFiles');
              me.focus();
//me.execCommand('inserthtml', '');
//原文章给的是
//me.execCommand('inserthtml', '');
//但是，是无法用loadingId绑定元素，所以也无法将图片的返回路径添加到html中，也就是
//loader = me.document.getElementById(loadingId); loader无法找到
//应该是用下边的写法
               me.execCommand('inserthtml', '<img class="loadingclass" id="' + loadingId + '" src="' + me.options.themePath + me.options.theme +'/images/spacer.gif" title="' + (me.getLang('simpleupload.loading') || '') + '" >');
  
              /* 判断后端配置是否没有加载成功 */
              if (!me.getOpt('imageActionName')) {
                errorHandler(me.getLang('autoupload.errorLoadConfig'));
                return;
              }
              // 判断文件格式是否错误
              var filename = input.value,
                fileext = filename ? filename.substr(filename.lastIndexOf('.')):'';
              if (!fileext || (allowFiles && (allowFiles.join('') + '.').indexOf(fileext.toLowerCase() + '.') == -1)) {
                showErrorLoader(me.getLang('simpleupload.exceedTypeError'));
                return;
              }
              var params = utils.serializeParam(me.queryCommandValue('serverparam')) || '';
              var action = utils.formatUrl(imageActionUrl + (imageActionUrl.indexOf('?') == -1 ? '?' : '&') + params);
              var formData = new FormData();
              formData.append("upfile", form[0].files[0] );
              $.ajax({
                url: action,
                type: 'POST',
                cache: false,
                data: formData,
                processData: false,
                contentType: false,
                success: function (data) {
                  data = JSON.parse(data);
                  var link, loader,
                    body = (iframe.contentDocument || iframe.contentWindow.document).body,
                    result = body.innerText || body.textContent || '';
                  link = me.options.imageUrlPrefix + data.url;
                  if(data.state == 'SUCCESS' && data.url) {
                    loader = me.document.getElementById(loadingId);
                    loader.setAttribute('src', link);
                    loader.setAttribute('_src', link);
                    loader.setAttribute('title', data.title || '');
                    loader.setAttribute('alt', data.original || '');
                    loader.removeAttribute('id');
                    domUtils.removeClasses(loader, 'loadingclass');
                  } else {
                    showErrorLoader && showErrorLoader(data.state);
                  }
                  form.reset();
                }
              });
              function showErrorLoader(title){
                if(loadingId) {
                  var loader = me.document.getElementById(loadingId);
                  loader && domUtils.remove(loader);
                  me.fireEvent('showmessage', {
                    'id': loadingId,
                    'content': title,
                    'type': 'error',
                    'timeout': 4000
                  });
                }
              }
            });

注意：我们引用的是ueditor.all.js，如果引用的是ueditor.all.min.js，得改成ueditor.all.js。这个低级错误我们不要犯哈。

.net core UEditor 开源地址https://github.com/baiyunchen/UEditor.Core

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