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我試圖在名爲YDN-DB的框架中訪問我的WebApi服務。它是一個本地存儲類型數據庫。它允許你從一個URL加載和 我試圖用一個十字原點調用。WebAPI2 - Cross Origin腳本問題
這是創建XMLHttpRequest,並使得調用的代碼:
var xhr = new XMLHttpRequest();
xhr.open('GET', url, true);
var me = this;
xhr.onload = function(e) {
var lines = xhr.responseText.split('\n');
var documents = [];
for (var i = 0; i < lines.length; i++) {
var data = lines[i].split(';');
if (data.length == 2) {
for(i=0; i<data.length; i++) {
// Here, I will be loading the records into the YDN-DB.
}
}
}
var msg = Documents.length + ' Documents loaded, indexing...';
me.setStatus(msg);
var i=0;
var load = function(i) {
var n = 50;
me.db.put('Document', docs.slice(i, i + n)).then(function(keys) {
i = i + n;
if (i < docs.length) {
this.setStatus(msg + ' ' + i);
load(i);
} else {
this.setStatus(msg + ' done.');
}
}, function(e) {
throw e;
}, me);
};
};
xhr.send();
我不斷收到一個錯誤,我想不通爲什麼。
XMLHttpRequest cannot load http://localhost:51946/api/Archive/c4020343622d57162cbdc11e603a49d93d64018e5c/1026697/1/10000/D.
No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:8040' is therefore not allowed access.
這是從我的控制器我的WebAPI的功能,我已經啓用CORS以及從原點:
[HttpGet]
[ResponseType(typeof(List<string>))]
[Route("api/Archive/{LogonTicket}/{PID}/{MinRow}/{MaxRow}/{Direction}")]
[EnableCors("http://localhost:8040", // Origin
"Accept, Origin, Content-Type, Options", // Request headers
"GET", // HTTP methods
PreflightMaxAge = 600 // Preflight cache duration
)]
public object Archive(string LogonTicket, int PID, int MinRow, int MaxRow, string Direction)
{
if (svc.ValidateTicket(LogonTicket, PID))
{
List<string> e = mp.GetArchiveJson(PID.ToString(), MinRow, MaxRow, Direction);
return e;
}
else
{
throw new AuthenticationException("Invalid LogonTicket");
}
}
任何想法?我是否需要向XMLHttpRequest添加第二個調用?
推測你已經安裝了'Microsoft.AspNet.WebApi.Cors' NuGet包。你是否也在你的啓動中運行'HttpConfiguration.EnableCors()',根據文檔? https://www.asp.net/web-api/overview/security/enabling-cross-origin-requests-in-web-api#enable-cors – Snixtor
我想我可能已經忘記這麼做了,我會檢查。 – MB34
好吧,發佈,我會接受。天哪,我不能相信我忘了那個 – MB34