i'm doing an application with ajax using jQuery and some other tools, and in some part i want to retrieve data with ajax using a classic ASP backend, i saw that exists a good implementation of a JSON class in AXE (Asp extreme edition) framework, and i used it but currently i don't understand how to use it well.
Edit: based on the correct answer of JSON.Stringify fails on Scripting.Dictionary objects Thread, i decided to make a custom function to process Recordsets.
Edit 2: Now i'm losing the value data when call JSON.stringify inside function JSONStringify(object).
when the Recordset is passed as value to JSONStringify everything is ok but when JSON.stringify is executed, the "value" parameter that must contain the recordset becomes undefined
What i'm expecting (example)
passing a Recordset with from a SQL query SELECT name, tel FROM users
a see an output like this
[
{"name":"Jonh Smith", "tel":"12345678"},
{"name":"April Michelson", "tel":"77788802"},
...
]
passing a Dictionary and see something similar based in the elements declared in dictionary.
{
"element1":"value1",
"element2":"value2",
"element3":"value3",
"element4":"value4",
"element5":"value5"
}
and if i like to support other type object i can do it expanding the function
Source Code
getcatalogos.asp
<!--#include file="../includes/conexion.asp" -->
<!--#include file="../includes/json2.asp" -->
<!--#include file="../includes/json-stringify-parser.asp" -->
<%
Response.ContentType = "application/json"
dim aVals(2)
function getCatalogo(tipo, params)
Dim oConn,oCmd,sSQL,oRs,cont2
Dim aData,oPar,cont
dim Info
set oConn = Server.CreateObject("ADODB.Connection")
set oCmd = Server.CreateObject("ADODB.Command")
sWhere = ""
oConn.ConnectionString = strcon
oConn.Open
Set oCmd.ActiveConnection = oConn
select case tipo
case "g"
sSQL = " SELECT cve_gr, descr FROM gr ORDER BY descr ;"
case "z"
sSQL = " SELECT cve_zn, descr FROM zn WHERE cve_gr = ? ORDER BY descr ;"
if IsArray(params) Then
Set oPar=oCmd.CreateParameter (params(0),129,1,2,params(1))
oCmd.Parameters.Append(oPar)
End if
case else
getCatalogo = false
exit function
end select
oCmd.CommandText = sSQL
Set oRs = oCmd.Execute()
if Not oRs.EOF Then
response.write(JSONStringify(oRs))
getCatalogo = true
else
getCatalogo = false
end if
oConn.Close
end function
aVals(0) = "cve_gr"
aVals(1) = request.querystring("gr")
if Not getCatalogo(request.querystring("t"),aVals) Then
%>error<%
end if
%>
json-stringify-parser.asp
<!--#include file="vbsTyper.asp" -->
<script runat="server" language="JScript">
function JSONStringify(object) {
VBSTypeName(object);
return JSON.stringify(object,stringifyData);
}
function stringifyData(holder, key, value) {
var sType = '';
var result;
//response.write('pre...holder=' + holder + ',key=' + key + ',value=' + value);
sType = VBSTypeName(value);
//response.write('post =' + sType);
//response.write(sType);
switch(sType){
case 'Dictionary':
result = '{';
for(var enr = new Enumerator(value); !enr.atEnd(); enr.moveNext()){
key = enr.item();
result += '"' + key + '": ' + JSON.stringify(value.Item(key));
};
result += '}';
return(result);
break;
case 'Recordset':
response.write('here!!!');
var sTemp = '';
result = '{';
while(!value.EOF){
if(Len(result) > 0){
result += ',';
}
result += '{';
for (var i = value.Fields.Count - 1; i >= 0; i--){
if(len(sTemp) > 0){
sTemp += ',';
}
sTemp += '"' + value.Fields(i).name + '":' + JSON.stringify( value.Fields(i).value);
};
result += '}';
}
result += '}';
return result;
break;
default:
//response.write(sType);
return(value);
}
// return the value to let it be processed in the usual way
return result;
}
</script>
vbsTyper.asp
<%
Function VBSTypeName(Obj)
dim sType
sType = Cstr(TypeName(Obj))
response.write(sType)
VBSTypeName = sType
End Function
%>
See Question&Answers more detail:
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