> For the complete documentation index, see [llms.txt](https://docs.exoclick.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.exoclick.com/publishers/zh/vast/vast-wrapper.md).

# VAST Wrapper 标签

## XML 示例

```xml
<?xml version="1.0" encoding="UTF-8"?>
<VAST version="3.0">
    <Ad id="1111111">
        <Wrapper>
            <AdSystem>EXADS</AdSystem>
            <VASTAdTagURI><![CDATA[https://external.adserver.com/xml?cid=1111111]]></VASTAdTagURI>
            <Impression id="exotr">
                <![CDATA[https://syndication.realsrv.com/vregister.php?a=vimp&tracking_event=impression&idzone=22222&data=abcd]]></Impression>
            <Error>
                <![CDATA[https://syndication.realsrv.com/vregister.php?a=vview&errorcode=[ERRORCODE]&idzone=22222]]></Error>
            <Creatives>
                <Creative sequence="1" id="12345">
                    <Linear>
                        <TrackingEvents>
                            <Tracking id="prog_1" event="progress" offset="00:00:10.000">
                                <![CDATA[https://syndication.realsrv.com/vregister.php?a=vview&tracking_event=progress&progress=00:00:10.000&idzone=22222&data=abcd]]></Tracking>
                        </TrackingEvents>
                        <VideoClicks>
                            <ClickThrough>
                                <![CDATA[https://syndication.realsrv.com/click.php?data=abcd]]></ClickThrough>
                        </VideoClicks>
                    </Linear>
                </Creative>
            </Creatives>
        </Wrapper>
    </Ad>
</VAST>
```

## 属性

| 选项                                       | 说明                                                                                                                                             |
| ---------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------- |
| `<?xml version="1.0" encoding="UTF-8"?>` | 带有定义版本和编码的 XML 声明。                                                                                                                             |
| `VAST`                                   | 此元素使用的 VAST 版本                                                                                                                                 |
| `Wrapper fallbackOnNoAd`                 | 表示树中还有另一个 VAST 元素。如果在广告位设置中启用了“视频回退”，则这也会指明该元素在 VAST 队列中的位置                                                                                    |
| `VASTAdTagURI`                           | 该元素用于提供指向次级 VAST 响应的 URI。该次级响应可能是另一个 Wrapper，但最终 VAST wrapper 必须返回一个 `<InLine>` 广告。版本 3 不限制 Wrapper 重定向次数，但从版本 4 开始，最多允许 5 次 Wrapper VAST 重定向。 |
| `VideoClicks`                            | 用于指定当广告显示时，如果用户直接在视频播放器框架内点击，视频播放器应执行的操作。当提供一个 `<VideoClicks>` 元素时，其中包含一个子 `<ClickTracking>` 元素，带有 URI（或 `<ClickThrough>` 在 VAST Tag 的情况下）。    |
| `ClickTracking`                          | 该元素用于跟踪 `点击跳转` 当创意文件处理该 `点击跳转`.                                                                                                                |
| `扩展`                                     | 广告服务器提供的附加设置                                                                                                                                   |


---

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