action 加入 async 造成前端無法呼叫

c#

====

public async void aaa()

{

}

javascript

====

axios.post('./aaa')

.then(response => {                               

}).catch(function (error) {

console.log(error);

})

解法:

1. void 改成 Task

2. web.config 加入

<add key="aspnet:AllowAsyncDuringSyncStages" value="true"/>

※理論上不該允許同步中包含非同步，此為寫法錯誤

javascript 透過 async 和 await 進行同步作業

async aaa() {

        let result=0;

await axios.post('./aaa')

.then(response => {

                        result=response.data;

}).catch(function (error) {

console.log(error);

});     

        consloe.log(result); // 等待 post 完成後才會執行

}

呼叫網址及驗證機制

呼叫端

using (HttpClient httpClient = new HttpClient())

{

httpClient.DefaultRequestHeaders.TryAddWithoutValidation("Authorization", token);

var stringContent = new StringContent(JsonConvert.SerializeObject(new {p1=123,p2="aaa"}), System.Text.Encoding.UTF8, "application/json");

using (var response = await httpClient.PostAsync(url, stringContent)) 

{ }

}

被呼叫端

[AllowAnonymous]

[HttpPost]

public void xxx(int p1,string p2)

{

if (Request.Headers["Authorization"]!=token) {

                Response.Write("非法呼叫");

                Response.StatusCode = (int)System.Net.HttpStatusCode.Unauthorized;

                return;

        }

}