我具有具有以下配置的Azure功能
{
"bindings": [
{
"authLevel": "function",
"type": "httpTrigger",
"direction": "in",
"name": "req",
"methods": [
"get",
"post"
]
},
{
"type": "http",
"direction": "out",
"name": "res"
},
{
"type": "cosmosDB",
"name": "inputDocument",
"databaseName": "MeasureInputData",
"collectionName": "hubs",
"connectionStringSetting": "measure-cosmosdb_DOCUMENTDB",
"direction": "in",
"sqlQuery": "SELECT * FROM c WHERE c.uuid = {hub}"
}
],
"disabled": false
}
如您在上面看到的,我将{hub}
中的sqlQuery
作为url参数传递。
提出类似要求
https://<my-function-url>?code=<my-function-key>&hub=<my-hub-id>
返回匹配的集线器。
如果将值<my-hub-id>
留空
https://<my-function-url>?code=<my-function-key>&hub=
返回一个空对象。
问题是当我在函数崩溃的URL中不提供hub
参数时。
https://<my-function-url>?code=<my-function-key>
请求以上返回http status code 500
是否应该以某种方式处理缺少的查询参数?
谢谢
不,您应该处理。如果检查hello world示例:
[FunctionName("HttpTriggerCSharp")]
public static async Task<IActionResult> Run(
[HttpTrigger(AuthorizationLevel.Function, "get", "post", Route = null)]
HttpRequest req, ILogger log)
{
log.LogInformation("C# HTTP trigger function processed a request.");
string name = req.Query["name"];
string requestBody = await new StreamReader(req.Body).ReadToEndAsync();
dynamic data = JsonConvert.DeserializeObject(requestBody);
name = name ?? data?.name;
return name != null
? (ActionResult)new OkObjectResult($"Hello, {name}")
: new BadRequestObjectResult("Please pass a name on the query string or in the request body");
}
它试图从查询字符串和正文中读取值。如果它为null,它将返回
new BadRequestObjectResult("Please pass a name on the query string or in the request body")
因此,如果查询字符串中没有提供集线器,请返回400(错误请求)
似乎SQL将是
SELECT * FROM c WHERE c.uuid =
但不是
SELECT * FROM c WHERE c.uuid = "" or SELECT * FROM c WHERE c.uuid = null
缺少参数“集线器”时。
Azure函数cosmos db绑定将无法处理查询中缺少的参数。如果您想处理此错误,我想我们可以创建另一个api或函数,并将原始函数url(调用)放在此新api /函数中。然后,我们可以在新的api /函数中处理此错误。
如果您希望使用天蓝色函数添加此功能,则可以将想法转至天蓝色函数feedback页面。