如何让在Html中特殊字符被数据加载时对于html标签的自动转义 补充

<div ng-repeat="item in list" >
        <div ng-bind-html="item.content |trustHtml"></div>
</div>

<li ng-repeat="item in msgList" class="clr" >
            <div class="chat-dialog-time" ng-show= "item.send_time1 != ‘‘">{{item.send_time1}}</div>
            <!--<div ng-class="{true: ‘chat-dialog-news-mine‘, false: ‘chat-dialog-news-other‘}[{{item.isOwn}}]" 
　　　　　　　　msgId="{{item.imdn_id}}">-->
            <div ng-class="{‘chat-dialog-news-mine‘:{{item.isOwn}},‘chat-dialog-news-other‘:{{!item.isOwn}},
‘chat-dialog-news-file‘:{{item.content_type == 6}},‘chat-dialog-news-mine-file‘:{{item.isOwn}}&&{{item.content_type == 6}},
‘chat-dialog-news-other-file‘:{{!item.isOwn}}&&{{item.content_type == 6}}}" msgId="{{item.imdn_id}}">
                <div contextmenu="supermenu" ng-right-click="decrementRight($event,item)">
                    <i class="icon warn-icon" ng-if="item.isWarn" ng-click="reSendFile(item)"></i>
                    <i ng-class="{true: ‘icon {{item.status}}‘, false: ‘‘}[{{item.isOwn && item.status !== ‘‘}}]"></i>
                    <i ng-class="{true: ‘bubble-icon right-icon‘, false: ‘bubble-icon left-icon‘}[{{item.isOwn}}]"></i>
                    <span compile=‘item.content|trustHtml‘ ng-click="newsClick($event, item)" 
ng-dblclick="newsDBClick($event, item)"></span>
                </div>

                <!--<span ng-if="!item.isWarn" ng-show="{{item.need_read_report==1||item.need_read_report}}"
 ng-class="{true: ‘chat-news-read‘, false: ‘chat-news-unread‘}[{{item.is_read==1}}]">-->
                   <!--{{item.is_read_report==1?‘已读‘:‘未读‘}}-->
                <!--</span>-->
            </div>