无法从 HttpRequestData 获取查询参数 [英] Can't get query parameter from HttpRequestData

问题描述

我正在将我的代码从 .NET 3.0 升级到 .NET 5.0，这对 sintaxis 有很大的改变.在我之前的代码中，这是一个在 AZURE FUNCTIONS .NET 5.0 隔离中构建的 http 请求，构建了一个接受参数的 GET api.

I'm upgrading my code from .NET 3.0 to .NET 5.0, this changes the sintaxis quite a bit. In my previous code, which is a http request build in AZURE FUNCTIONS .NET 5.0 isolate, builds an GET api that takes parameters.

这是我之前的 .NET 3.0 代码

This is my previous code from .NET 3.0

using Microsoft.Azure.WebJobs; 
using Microsoft.Azure.WebJobs.Extensions.Http;


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.");
    byte[] RSA_Key_to_Correct = new byte[0x80];
    string array_var = req.Query["array_var"];
    string i = req.Query["i"];
    string incrementing_value = req.Query["incrementing_value"];
}

我只是找不到一种方法来使用 req 从 api 调用中获取参数，就像在 .NET 3.0 上完成的那样 string i = req.Query["i"];

I just cant find a way to use req to grab a parameter from the api call like it was done on .NET 3.0 string i = req.Query["i"];

在 .NET 5.0 中使用

In .NET 5.0 im using

using Microsoft.Azure.Functions.Worker;
using Microsoft.Azure.Functions.Worker.Http;

有什么提示吗?

推荐答案

在 Azure 函数 .NET 5.0 中，我们使用 Http Trigger 中的 HttpRequestData.该类不包含 Query 参数.更多详情请参考

In Azure function .NET 5.0, we use the HttpRequestData in Http Trigger. The class does not contain Query parameter. For more details, please refer to here

所以如果你想获取查询字符串，你可以使用包Microsoft.AspNetCore.WebUtilities.QueryHelpers来实现它，正如@user1672994所说.

So if you want to get query string, you can use the package Microsoft.AspNetCore.WebUtilities.QueryHelpers to implement it as @user1672994 said.

例如

var queryDictionary = 
    Microsoft.AspNetCore.WebUtilities.QueryHelpers.ParseQuery(req.Url.Query);
var result = queryDictionary["<key name>"];

这篇关于无法从 HttpRequestData 获取查询参数的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！