無效的Web服務調用，缺少參數值：\ u0027sentQuery \ u0027＆無效的JSON原語(Invalid web service call, missing value for parameter: \u0027sentQuery\u0027 & Invalid JSON primitive)
不知道為什麼我得到這個，但我得到這個錯誤：
Invalid web service call, missing value for parameter: \u0027sentQuery\u0027
嘗試執行jQuery AJAX到我的ASPX Web服務時。
我的AJAX是這樣的：
$.ajax({
type: 'GET',
contentType: "application/json; charset=utf-8",
dataType: 'json',
url: "http://localhost:7665/Service1.asmx/theQ",
data: "{\"sentQuery\":" + "\"SELECT OPRID FROM vwPS_BC_JOB_PERS_DAT\"" + "}",
success: function (data) {
console.log(data);
},
error: function (a) {
alert('ERROR: ' + a.responseText);
}
});
我的VB Web服務代碼：
_
_
Public Sub theQ(ByVal sentQuery As String)
Dim results As Object = fetchSQLQ("query", sentQuery)
Try
Dim ser As New System.Web.Script.Serialization.JavaScriptSerializer()
Dim strResponse As String = ser.Serialize(results)
Context.Response.Clear()
Context.Response.ContentType = "application/json"
Context.Response.AddHeader("content-length", strResponse.Length.ToString())
Context.Response.Write(strResponse)
HttpContext.Current.ApplicationInstance.CompleteRequest()
Catch ex As Exception
Context.Response.Clear()
Context.Response.ContentType = "application/json"
Context.Response.AddHeader("content-length", ex.Message.Length.ToString())
Context.Response.Write(String.Format("[ERROR: {0}]", ex.Message))
HttpContext.Current.ApplicationInstance.CompleteRequest()
End Try
End Sub
UPDATE
我猜以下是正确的：
data: { sentQuery: "SELECT OPRID FROM vwPS_BC_JOB_PERS_DAT" },
但是，它确實産生了另一個錯誤：
Invalid JSON primitive: SELECT.
咦????
Not sure why I am getting this but I get this error:
Invalid web service call, missing value for parameter: \u0027sentQuery\u0027
When trying to execute jQuery AJAX to my ASPX web service.
My AJAX is this:
$.ajax({
type: 'GET',
contentType: "application/json; charset=utf-8",
dataType: 'json',
url: "http://localhost:7665/Service1.asmx/theQ",
data: "{\"sentQuery\":" + "\"SELECT OPRID FROM vwPS_BC_JOB_PERS_DAT\"" + "}",
success: function (data) {
console.log(data);
},
error: function (a) {
alert('ERROR: ' + a.responseText);
}
});
And my VB web service code:
_
_
Public Sub theQ(ByVal sentQuery As String)
Dim results As Object = fetchSQLQ("query", sentQuery)
Try
Dim ser As New System.Web.Script.Serialization.JavaScriptSerializer()
Dim strResponse As String = ser.Serialize(results)
Context.Response.Clear()
Context.Response.ContentType = "application/json"
Context.Response.AddHeader("content-length", strResponse.Length.ToString())
Context.Response.Write(strResponse)
HttpContext.Current.ApplicationInstance.CompleteRequest()
Catch ex As Exception
Context.Response.Clear()
Context.Response.ContentType = "application/json"
Context.Response.AddHeader("content-length", ex.Message.Length.ToString())
Context.Response.Write(String.Format("[ERROR: {0}]", ex.Message))
HttpContext.Current.ApplicationInstance.CompleteRequest()
End Try
End Sub
UPDATE
I am guessing that the following is correct:
data: { sentQuery: "SELECT OPRID FROM vwPS_BC_JOB_PERS_DAT" },
However, it does produce another error:
Invalid JSON primitive: SELECT.
Huh????
原文：https://stackoverflow.com/questions/32998831
更新時間：2020-02-26 03:43
最滿意答案
手動建立json是容易出錯的，并且由于難以閱讀也很難調試。
讓javascript中的序列化方法(如JSON.stringify為您完成
嘗試
data: JSON.stringify({sentQuery:"SELECT OPRID FROM vwPS_BC_JOB_PERS_DAT"}),
Finally got this after reading Chris Brandsma post.
AJAX code:
$.ajax({
type: 'POST',
contentType: 'application/json; charset=utf-8',
dataType: 'json',
url: 'http://localhost:7665/Service1.asmx/theQ',
data: JSON.stringify({ qString: ["SELECT OPRID FROM vwPS_BC_JOB_PERS_DAT"] }),
async: true,
cache: false,
success: function (data) {
console.log(data);
},
error: function (a) {
alert('ERROR: ' + a.responseText);
}
});
VB.net code:
_
_
Public Sub theQ(qString As List(Of String))
Dim results As Object = fetchSQLQ("query", qString(0))
Try
Dim ser As New System.Web.Script.Serialization.JavaScriptSerializer()
Dim strResponse As String = ser.Serialize(results)
Context.Response.Clear()
Context.Response.ContentType = "application/json"
Context.Response.AddHeader("content-length", strResponse.Length.ToString())
Context.Response.Write(strResponse)
HttpContext.Current.ApplicationInstance.CompleteRequest()
Catch ex As Exception
Context.Response.Clear()
Context.Response.ContentType = "application/json"
Context.Response.AddHeader("content-length", ex.Message.Length.ToString())
Context.Response.Write(String.Format("[ERROR: {0}]", ex.Message))
HttpContext.Current.ApplicationInstance.CompleteRequest()
End Try
End Sub
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