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azure - 尝试在天蓝色函数中使用绑定名称作为参数时出现 System.InvalidOperationException

问题描述

遵循本教程chain-azure-functions-data-using-bindings，使用 JavaScript 时它可以工作，但是使用 .net 作为运行时堆栈创建了一个新的函数应用程序，添加了所需的 cosmos db 映射，当使用 https等查询参数发送 GET 请求时://azurefuncurl?code=abc&id=docs appinsights 显示 azure 函数/主机由于 System.InvalidOperationException 而无法启动

尝试通过官方文档：azure-functions/configInput-Usage，没有运气

函数.json 

{
 "bindings": [
{
  "authLevel": "function",
  "name": "req",
  "type": "httpTrigger",
  "direction": "in",
  "methods": [
    "get",
    "post"
  ]
},
{
  "name": "$return",
  "type": "http",
  "direction": "out"
},
{
  "type": "cosmosDB",
  "name": "bookmark",
  "databaseName": "func-io-learn-db",
  "collectionName": "Bookmarks",
  "connectionStringSetting": "chainazurefunctions_DOCUMENTDB",
  "id": "{id}",
  "partitionKey": "{id}",
  "direction": "in"
 }]
}

运行.csx

#r "Newtonsoft.Json"
using System.Net;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Primitives;
using Newtonsoft.Json;

public static async Task<IActionResult> Run(HttpRequest req, ILogger log, dynamic bookmark)
{

log.LogInformation("C# HTTP trigger function processed a request.");

string name = req.Query["id"];

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");
}

异常消息：

Error indexing method 'Functions.find-bookmark' Unable to resolve binding parameter 'id'. Binding expressions must map to either a value provided by the trigger or a property of the value the trigger is bound to, or must be a system binding expression (e.g. sys.randguid, sys.utcnow, etc.).

标签： azureazure-functionscsx

解决方案

只需替换{id}为{Query.id}，看看csx 示例。

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