docs: update document about openapi exporter (#2778)
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diff --git a/docs/en/latest/api/api.md b/docs/en/latest/api/api.md
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@@ -200,6 +200,25 @@
| 0 | list response | [ [service](#service) ] |
| default | unexpected error | [ApiError](#ApiError) |
+### /apisix/admin/export/routes/{ids}
+
+#### Summary
+
+Export specific or all routes as OpenAPI schema.
+
+##### Parameters
+
+| Name | Located in | Description | Required | Schema |
+|------------|------------|---------------------------------------------------------------------------------------------------------------------------------------------| -------- | ------- |
+| ids | path | To export specific routes, please provide the route IDs separated by commas. If you leave the ids field empty, all routes will be exported. | No | integer |
+
+##### Responses
+
+| Code | Description | Schema |
+| ------- |----------------------|-------------------------------------------------------------------------------------------------------|
+| 0 | openapi json content | [ [OpenAPI schema](https://github.com/OAI/OpenAPI-Specification/blob/main/schemas/v3.0/schema.json) ] |
+| default | unexpected error | [ApiError](#ApiError) |
+
### /apisix/admin/ssl
#### GET
diff --git a/docs/en/latest/modules/data_loader/openapi3.md b/docs/en/latest/modules/data_loader/openapi3.md
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@@ -116,4 +116,9 @@
### Export
-Not supported yet.
+1. Open the route, and select routes you want to export.
+ 
+2. Click `Export OpenAPI` button.
+ 
+3. Select the export format, eg `Yaml`. Then click `Confirm` to export.
+ 
