Confluence页面添加水印方法

如何给Confluence页面添加水印呢？
1、进入站点管理—外观—版式—内容版式—页面版式—自定义

2、找到下面一段代码

<div id="main-content" class="wiki-content">
           $body
</div>

3、在下面增加如下的代码

<script>
    (function waterMark() {
        var canvas = document.createElement('canvas');
        var body = document.getElementById('main-content');
        
        body.appendChild(canvas);
        
        canvas.width = 280;
        canvas.height = 280;
        var context = canvas.getContext('2d');
        context.rotate(-20*Math.PI/180);
        context.fillStyle = "rgba(17,17,17,0.20)";
        context.font = "16px Arial";
        context.textAlign = "left";
        context.textBaseline = 'middle';

        var date = new Date();
        var text = "$!action.remoteUser.fullName" + " " + date.toLocaleString();
        context.fillText(text, canvas.width/3-40, canvas.height/2-40, 200);
        context.fillText("版权所有", canvas.width/3-40, canvas.height/2, 200);
        body.style.backgroundImage = "url("+canvas.toDataURL("image/png")+")";
    })();
</script>

4、添加后，点击保存，刷新页面生效。