ckeditor默认首行缩进是margin。是整段缩进、解决问题的核心是text-indent:2em

解决首行缩进

修改源码，然后让他变成上面的代码，这样点击缩进的时候就是text-indent:2em

打开ckeditor.js文件，使用ctrl+f进行搜索。

d.config.indentOffset||40  将40修改为2
d.config.indentUnit||"px"  将px修改为em
b.getComputedStyle("direction"))?"margin-left":"margin-right"}  将"margin-left":"margin-right"修改为"text-indent":"text-indent"

修改完成后、页面配置加上

    CKEDITOR.config.extraAllowedContent = 'p{text-indent}';

网上有人说用这个config.allowedContent = true;但是配置后期他也不会被过滤

上传文件的配置

由于插件更新以前默认上传的方式是form表单、现在默认方式为ajax

<script>
    // CKEDITOR.config.filebrowserImageUploadUrl = "/admin/article/itArticle_img";
    // CKEDITOR.config.filebrowserUploadMethod = 'form'; //4。9默认是xhr 的方式ajax
    CKEDITOR.config.filebrowserImageUploadUrl = '/admin/article/uploadImage';
    CKEDITOR.config.uploadUrl = '/admin/article/uploadImage';
    CKEDITOR.config.removePlugins = "devtools,flash,about";
    CKEDITOR.config.height = 390;
    CKEDITOR.config.extraAllowedContent = 'p{text-indent}';
    if (CKEDITOR.env.ie && CKEDITOR.env.version < 9) CKEDITOR.tools.enableHtml5Elements(document);
    var tmpConfig = {
        language: 'zh-cn',
        filebrowserBrowseUrl: '/static/plugins/common/ckfinder/ckfinder.html',
        filebrowserUploadUrl: '/static/plugins/common/ckfinder/core/connector/php/connector.php?command=QuickUpload&type=Files',
        wordcount: {
            showParagraphs: false, showWordCount: false, showCharCount: true,
            countSpacesAsChars: false, countHTML: false, maxWordCount: -1, maxCharCount: 16000,
            filter: new CKEDITOR.htmlParser.filter({
                elements: {
                    div: function (element) {
                        if (element.attributes.class == 'mediaembed') {
                            return false;
                        }
                    }
                }
            })
        }
    };
    window.instansAnswer = CKEDITOR.replace('content', tmpConfig);
    CKFinder.setupCKEditor( window.instansAnswer );
</script>