Question

我正在尝试使用Forge API从Autodesk BIM360 Doc（https://docs.b360.autodesk.com）下载文件，以便随后将文件归档到我们的本地存储中。

我已经成功使用数据管理API https://forge.autodesk.com/en/docs/data/v2/reference/http/projects-project_id-versions-version_id-GET/从“项目文件” 文件夹中下载了任何文件，利用该文件我可以在 data.relationships下获得存储ID。 storage.data.id 。

但是使用相同的API查询“计划” 文件夹下的文件时，我无法获得存储ID，

那么Forge API有什么办法可以从Plan文件夹下载文件？任何帮助表示赞赏。

Answer 1

“计划”文件夹中列出的项目是一种items:autodesk.bim360:Document，这种类型的项目不会直接在其GET versions/:version_id和GET items/:item_id的响应中显示存储属性。

要获取物理文件的位置，您应该调用GET versions/:version_id/relationships/refs，有关类似线程，请参见此处：Download a Document with Autodesk API

更新复制的项目

通过GET versions/:version_id/relationships/refs访问复制项目版本的关系数据时，您会看到一个数据属性，根据我的经验告诉复制项目与源项目之间的关系：

"data": [
    {
        "type": "versions",
        "id": "urn:adsk.wipprod:fs.file:vf.34Xvlw1jTcSQ_XkIVh07cg?version=2",
        "meta": {
            "refType": "derived",
            "fromId": "urn:adsk.wipprod:fs.file:vf.34Xvlw1jTcSQ_XkIVh07cg?version=2",
            "fromType": "versions",
            "toId": "urn:adsk.wipprod:fs.file:vf.y3L7YbfAQJWwumMgqjJUxg?version=1",
            "toType": "versions",
            "direction": "to",
            "extension": {
                "type": "derived:autodesk.bim360:CopyDocument",
                "version": "1.0",
                "schema": {
                    "href": "https://developer.api.autodesk.com/schema/v1/versions/derived:autodesk.bim360:CopyDocument-1.0"
                },
                "data": {}
            }
        }
    }
],

此后，您必须通过调用GET versions/:version_id/relationships/refs访问fromId的版本关系dat。

在这种情况下，它是{PROJ_ID}/versions/urn:adsk.wipprod:fs.file:vf.34Xvlw1jTcSQ_XkIVh07cg%3Fversion=2/relationships/refs，然后您将在调查中看到storage属性。

Answer 2

以防万一其他人遇到相同的问题，我发布了我的代码，最终我设法通过这些代码获取了文件存储信息。但是，请随意为迭代整个关系树建议其他方法。

internal static ForgeFileInfo getItemVersion(string token, string projectID, string versionID)
    {
        ForgeFileInfo forgeFileInfo = new ForgeFileInfo();

        ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;
        versionApi.Configuration.AccessToken = token;
        var version = versionApi.GetVersion(projectID, versionID);
        string fileType = version.data.attributes.extension.type;
        switch (fileType) {
            case "versions:autodesk.bim360:File":
                //File from Project File library or is regual file
                forgeFileInfo.FileName = version.data.attributes.displayName;
                forgeFileInfo.FileLocation = version.data.relationships.storage.meta.link.href;
                forgeFileInfo.StorageId = version.data.relationships.storage.data.id;
                return forgeFileInfo;
            case "versions:autodesk.bim360:Document":
                //File from Plan Library
                var versionRelationship=versionApi.GetVersionRelationshipsRefs(projectID, versionID);

                // the GET Relationship has data node where we can get the related document
                var relationshipData = new DynamicDictionaryItems(versionRelationship.data);
                // let's start iterating the relationship DATA
                foreach (KeyValuePair<string, dynamic> relationshipItem in relationshipData)
                {
                    //Have to loop until we found "derived:autodesk.bim360:FileToDocument"
                    var relationType = relationshipItem.Value.meta.extension.type;
                    var relation = relationshipItem.Value.meta.direction;
                    if ("derived:autodesk.bim360:FileToDocument".Equals(relationType))
                    {
                        if ("to".Equals(relation))
                        {
                            //Go up stream
                            return getItemVersion(token, projectID, relationshipItem.Value.id);
                        }
                    }
                    else if ("derived:autodesk.bim360:CopyDocument".Equals(relationType))
                    {
                        if ("to".Equals(relation))
                        {
                            //Go up stream
                            return getItemVersion(token, projectID, relationshipItem.Value.id);
                        }
                        continue;
                    }               
                }
                break;
        }
        return forgeFileInfo;
    }

BIM360 Doc Plans文件夹中的API下载文件

2 个答案: