Javascript 经典ASP:如何使用AXE json实现将记录集转换为json符号
我正在使用jQuery和其他一些工具使用ajax开发一个应用程序,在某种程度上我想使用经典的ASP后端使用ajax检索数据,我看到AXE(ASP extreme edition)框架中存在一个JSON类的良好实现,我使用了它,但目前我不知道如何很好地使用它 编辑:基于线程的正确答案,我决定创建一个自定义函数来处理记录集 编辑2:现在,在函数JSONStringify(对象)内部调用JSON.stringify时,我丢失了值数据 当记录集作为值传递给JSONStringify时,一切正常,但当执行JSON.stringify时,必须包含记录集的“value”参数将变得未定义 我期待的(示例) 通过SQL查询传递记录集Javascript 经典ASP:如何使用AXE json实现将记录集转换为json符号,javascript,json,asp-classic,vbscript,jscript,Javascript,Json,Asp Classic,Vbscript,Jscript,我正在使用jQuery和其他一些工具使用ajax开发一个应用程序,在某种程度上我想使用经典的ASP后端使用ajax检索数据,我看到AXE(ASP extreme edition)框架中存在一个JSON类的良好实现,我使用了它,但目前我不知道如何很好地使用它 编辑:基于线程的正确答案,我决定创建一个自定义函数来处理记录集 编辑2:现在,在函数JSONStringify(对象)内部调用JSON.stringify时,我丢失了值数据 当记录集作为值传递给JSONStringify时,一切正常,但当执行
SELECT name,tel from users
a查看如下输出
[
{"name":"Jonh Smith", "tel":"12345678"},
{"name":"April Michelson", "tel":"77788802"},
...
]
传递字典并查看字典中声明的元素中的类似内容
{
"element1":"value1",
"element2":"value2",
"element3":"value3",
"element4":"value4",
"element5":"value5"
}
如果我想支持其他类型的对象,我可以扩展函数
源代码
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
%>
<!--#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>
<%
Function VBSTypeName(Obj)
dim sType
sType = Cstr(TypeName(Obj))
response.write(sType)
VBSTypeName = sType
End Function
%>
错误
json stringify parser.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
%>
<!--#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>
<%
Function VBSTypeName(Obj)
dim sType
sType = Cstr(TypeName(Obj))
response.write(sType)
VBSTypeName = sType
End Function
%>
函数JSONStringify(对象){
VBSTypeName(对象);
返回JSON.stringify(对象,stringifyData);
}
函数字符串化数据(持有者、键、值){
var sType='';
var结果;
//write('pre…holder='+holder+',key='+key+',value='+value');
sType=VBSTypeName(值);
//write('post='+sType);
//响应。写入(sType);
开关(sType){
“字典”的大小写:
结果='{';
for(var enr=新枚举数(值);!enr.atEnd();enr.moveNext()){
key=enr.item();
结果+='“'+key+'”:'+JSON.stringify(value.Item(key));
};
结果+='}';
返回(结果);
打破
案例“记录集”:
回答。写('here!!!');
var-sTemp='';
结果='{';
而(!value.EOF){
如果(Len(结果)>0){
结果+=',';
}
结果+='{';
对于(var i=value.Fields.Count-1;i>=0;i--){
如果(len(sTemp)>0){
sTemp+=',';
}
sTemp+=''“'+value.Fields(i.name+'”:'+JSON.stringify(value.Fields(i.value));
};
结果+='}';
}
结果+='}';
返回结果;
打破
违约:
//响应。写入(sType);
回报(价值);
}
//返回值,以便以常规方式对其进行处理
返回结果;
}
vbsTyper.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
%>
<!--#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>
<%
Function VBSTypeName(Obj)
dim sType
sType = Cstr(TypeName(Obj))
response.write(sType)
VBSTypeName = sType
End Function
%>
这是:
response.write(JSON.stringify(oRs))
应该这样读:
Do Until oRS.EOF
response.write(JSON.stringify(oRs("cve_gr") & ":" & oRs("descr"))
oRS.MoveNext
Loop
某种程度上实现了它
简短版本:我不得不修改json2.asp,并修改stringify()函数定义,使其正常工作
长版本
后来,我看到了每一行代码,并放弃了这个问题。我决定研究一下(AXE框架)并尝试看看它在那里发生了什么
看看我看到了什么:
从第682行到第687行,如果找到了自定义stringy解析器,但之后没有做任何事情,则会进行验证。。。仅返回对象值
这里有猜测,因为我不太了解每个Javascript实现是如何工作的,但这意味着原始代码运行良好,一个标准Javascript解释器(读取除microsoft以外的所有内容)将强制在该评估中序列化对象,但是JScript解释器尝试解析对象并将值传递为null。导致每个使用自定义StringyFire的函数都无法读取在函数中传递的对象
为了解决ok,我在第688行之前插入了这段代码,强制执行自定义StringyFire,将值直接作为参数传递,避免隐式解析
// Hack & patch to deliver the stringify-ing of the object correctly
// IDK if this is CORRECT or dont but it works in VbScript
if(replacer){
var textval = rep(this,'',value);
value = textval;
}
后来我不得不在json stringify parser.asp中做一些更改,因为我必须修复导致此代码的一些错误
<!--#include file="vbsTyper.asp" -->
<script runat="server" language="JScript">
function JSONStringify(object) {
//VBSTypeName(object);
return JSON.stringify(object,stringifyData,4);
}
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(result.length > 0){
result += ',';
}
result += '{';
sTemp=''
for (var i = 0; i < value.fields.Count; i++){
if(sTemp.length > 0){
sTemp += ',';
}
//response.write("i=" + i + ",");
sTemp += '"' + value.fields.item(i).name + '":' + JSON.stringify( value.fields.item(i).value);
};
result += sTemp + '}';
value.moveNext();
}
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>
剩下的问题
我留下的问题有点像黑客
- 输出在begging和 结束了,其他一切都有逃避的感觉??或者是什么 这不应该发生
- 这种黑客真的是错误的…我可以做得更好,在这方面 什么情况
- 我的结论或论点有问题吗