Autodesk forge Autodesk Forge模型衍生属性返回空集合

Autodesk Forge模型派生属性返回空集合，我正在使用api

https://developer.api.autodesk.com/modelderivative/v2/designdata/:urn/metadata/:guid/properties

获取demp.dwg文件的属性，但返回空集合

{
"data": {
    "type": "properties",
    "collection": []
}    }

获取清单的调用

详情如下:

{"urn": "dXJuOmFkc2sub2JqZWN0czpvcy5vYmplY3Q6YW50YW1pbmEvUHJ1ZWJhLmR3Zw",
"derivatives": [
    {
        "hasThumbnail": "true",
        "children": [
            {
                "urn": "urn:adsk.viewing:fs.file:dXJuOmFkc2sub2JqZWN0czpvcy5vYmplY3Q6YW50YW1pbmEvUHJ1ZWJhLmR3Zw/output/properties.db",
                "role": "Autodesk.CloudPlatform.PropertyDatabase",
                "mime": "application/autodesk-db",
                "guid": "cb73c076-d3cd-a725-754f-a64cd8c07648",
                "type": "resource",
                "status": "success"
            },
            {
                "guid": "fa729fe0-682e-c3b7-9662-9d88ce4b7b68",
                "type": "geometry",
                "role": "2d",
                "name": "4140",
                "viewableID": "4140",
                "status": "success",
                "hasThumbnail": "true",
                "progress": "complete",
                "children": [
                    {
                        "urn": "urn:adsk.viewing:fs.file:dXJuOmFkc2sub2JqZWN0czpvcy5vYmplY3Q6YW50YW1pbmEvUHJ1ZWJhLmR3Zw/output/Prueba-4140_100.png",
                        "role": "thumbnail",
                        "mime": "image/png",
                        "guid": "816e2536-e012-c3d5-1b5a-fa4146daa077",
                        "type": "resource",
                        "resolution": [
                            100,
                            100
                        ],
                        "status": "success"
                    },
                    {
                        "urn": "urn:adsk.viewing:fs.file:dXJuOmFkc2sub2JqZWN0czpvcy5vYmplY3Q6YW50YW1pbmEvUHJ1ZWJhLmR3Zw/output/Prueba-4140_200.png",
                        "role": "thumbnail",
                        "mime": "image/png",
                        "guid": "21cfc2dc-2b82-13d7-5f37-89aba22ce02d",
                        "type": "resource",
                        "resolution": [
                            200,
                            200
                        ],
                        "status": "success"
                    },
                    {
                        "urn": "urn:adsk.viewing:fs.file:dXJuOmFkc2sub2JqZWN0czpvcy5vYmplY3Q6YW50YW1pbmEvUHJ1ZWJhLmR3Zw/output/Prueba-4140_400.png",
                        "role": "thumbnail",
                        "mime": "image/png",
                        "guid": "7c88e238-088a-f574-cbe8-b86397d67ef9",
                        "type": "resource",
                        "resolution": [
                            400,
                            400
                        ],
                        "status": "success"
                    },
                    {
                        "urn": "urn:adsk.viewing:fs.file:dXJuOmFkc2sub2JqZWN0czpvcy5vYmplY3Q6YW50YW1pbmEvUHJ1ZWJhLmR3Zw/output/1b89b0d3-1560-00ab-c51e-7626cfe4cecb_f2d/primaryGraphics.f2d",
                        "role": "graphics",
                        "mime": "application/autodesk-f2d",
                        "guid": "56187d40-cf5c-e4d9-2fe7-a69210e2fcfe",
                        "type": "resource",
                        "status": "success"
                    }
                ]
            }
        ],
        "name": "Prueba.dwg",
        "progress": "complete",
        "outputType": "svf",
        "status": "success"
    }
],
"hasThumbnail": "true",
"progress": "complete",
"type": "manifest",
"region": "US",
"version": "1.0",
"status": "success" }

---

我无法让它返回属性中的数据这似乎是特定于DWG文件的端点中的问题。我们已经向工程团队报告了这个问题，一旦有更多信息，我们会尽快回复您

---

同时，我建议你看看这篇博文：。它讨论了检索模型属性的其他方法。对于您的特定DWG，我能够毫无问题地检索sqlite表单中的属性。

当您将模型加载到Forge Viewer时，是否有任何模型对象及其属性在“属性”面板中可用？如果是，我们可能需要一个演示DWG文件进行诊断。如果是机密图纸，请将其发送到autodesk.com上的forge.help。谢谢回复。在Forge viewer中显示模型和属性。我会将文件发送到指定的电子邮件，谢谢