asp使用AspJson转换json数据

2024-03-01 0 699
目录
  • aspJSON1.17.asp文件
  • AspJson官方使用方法参考
  • 示例一—输出json
  • 示例二—转换为json格式输出
  • 示例三—JS读取Json
  • 总结

需要使用json数据的场景很多,那么asp中如何操作json数据呢?asp与json格式又如何交互呢?本文介绍使用AspJson转换为json格式数据输出,以及解析json数据。

aspJSON1.17.asp文件

<%
\’Februari 2014 – Version 1.17 by Gerrit van Kuipers
Class aspJSON
Public data
Private p_JSONstring
private aj_in_string, aj_in_escape, aj_i_tmp, aj_char_tmp, aj_s_tmp, aj_line_tmp, aj_line, aj_lines, aj_currentlevel, aj_currentkey, aj_currentvalue, aj_newlabel, aj_XmlHttp, aj_RegExp, aj_colonfound

Private Sub Class_Initialize()
Set data = Collection()

Set aj_RegExp = new regexp
aj_RegExp.Pattern = \”\\s{0,}(\\S{1}[\\s,\\S]*\\S{1})\\s{0,}\”
aj_RegExp.Global = False
aj_RegExp.IgnoreCase = True
aj_RegExp.Multiline = True
End Sub

Private Sub Class_Terminate()
Set data = Nothing
Set aj_RegExp = Nothing
End Sub

Public Sub loadJSON(inputsource)
inputsource = aj_MultilineTrim(inputsource)
If Len(inputsource) = 0 Then Err.Raise 1, \”loadJSON Error\”, \”No data to load.\”

select case Left(inputsource, 1)
case \”{\”, \”[\”
case else
Set aj_XmlHttp = Server.CreateObject(\”Msxml2.ServerXMLHTTP\”)
aj_XmlHttp.open \”GET\”, inputsource, False
aj_XmlHttp.setRequestHeader \”Content-Type\”, \”text/json\”
aj_XmlHttp.setRequestHeader \”CharSet\”, \”UTF-8\”
aj_XmlHttp.Send
inputsource = aj_XmlHttp.responseText
set aj_XmlHttp = Nothing
end select

p_JSONstring = CleanUpJSONstring(inputsource)
aj_lines = Split(p_JSONstring, Chr(13) & Chr(10))

Dim level(99)
aj_currentlevel = 1
Set level(aj_currentlevel) = data
For Each aj_line In aj_lines
aj_currentkey = \”\”
aj_currentvalue = \”\”
If Instr(aj_line, \”:\”) > 0 Then
aj_in_string = False
aj_in_escape = False
aj_colonfound = False
For aj_i_tmp = 1 To Len(aj_line)
If aj_in_escape Then
aj_in_escape = False
Else
Select Case Mid(aj_line, aj_i_tmp, 1)
Case \”\”\”\”
aj_in_string = Not aj_in_string
Case \”:\”
If Not aj_in_escape And Not aj_in_string Then
aj_currentkey = Left(aj_line, aj_i_tmp – 1)
aj_currentvalue = Mid(aj_line, aj_i_tmp + 1)
aj_colonfound = True
Exit For
End If
Case \”\\\”
aj_in_escape = True
End Select
End If
Next
if aj_colonfound then
aj_currentkey = aj_Strip(aj_JSONDecode(aj_currentkey), \”\”\”\”)
If Not level(aj_currentlevel).exists(aj_currentkey) Then level(aj_currentlevel).Add aj_currentkey, \”\”
end if
End If
If right(aj_line,1) = \”{\” Or right(aj_line,1) = \”[\” Then
If Len(aj_currentkey) = 0 Then aj_currentkey = level(aj_currentlevel).Count
Set level(aj_currentlevel).Item(aj_currentkey) = Collection()
Set level(aj_currentlevel + 1) = level(aj_currentlevel).Item(aj_currentkey)
aj_currentlevel = aj_currentlevel + 1
aj_currentkey = \”\”
ElseIf right(aj_line,1) = \”}\” Or right(aj_line,1) = \”]\” or right(aj_line,2) = \”},\” Or right(aj_line,2) = \”],\” Then
aj_currentlevel = aj_currentlevel – 1
ElseIf Len(Trim(aj_line)) > 0 Then
if Len(aj_currentvalue) = 0 Then aj_currentvalue = aj_line
aj_currentvalue = getJSONValue(aj_currentvalue)

If Len(aj_currentkey) = 0 Then aj_currentkey = level(aj_currentlevel).Count
level(aj_currentlevel).Item(aj_currentkey) = aj_currentvalue
End If
Next
End Sub

Public Function Collection()
set Collection = Server.CreateObject(\”Scripting.Dictionary\”)
End Function

Public Function AddToCollection(dictobj)
if TypeName(dictobj) <> \”Dictionary\” then Err.Raise 1, \”AddToCollection Error\”, \”Not a collection.\”
aj_newlabel = dictobj.Count
dictobj.Add aj_newlabel, Collection()
set AddToCollection = dictobj.item(aj_newlabel)
end function

Private Function CleanUpJSONstring(aj_originalstring)
aj_originalstring = Replace(aj_originalstring, Chr(13) & Chr(10), \”\”)
aj_originalstring = Mid(aj_originalstring, 2, Len(aj_originalstring) – 2)
aj_in_string = False : aj_in_escape = False : aj_s_tmp = \”\”
For aj_i_tmp = 1 To Len(aj_originalstring)
aj_char_tmp = Mid(aj_originalstring, aj_i_tmp, 1)
If aj_in_escape Then
aj_in_escape = False
aj_s_tmp = aj_s_tmp & aj_char_tmp
Else
Select Case aj_char_tmp
Case \”\\\” : aj_s_tmp = aj_s_tmp & aj_char_tmp : aj_in_escape = True
Case \”\”\”\” : aj_s_tmp = aj_s_tmp & aj_char_tmp : aj_in_string = Not aj_in_string
Case \”{\”, \”[\”
aj_s_tmp = aj_s_tmp & aj_char_tmp & aj_InlineIf(aj_in_string, \”\”, Chr(13) & Chr(10))
Case \”}\”, \”]\”
aj_s_tmp = aj_s_tmp & aj_InlineIf(aj_in_string, \”\”, Chr(13) & Chr(10)) & aj_char_tmp
Case \”,\” : aj_s_tmp = aj_s_tmp & aj_char_tmp & aj_InlineIf(aj_in_string, \”\”, Chr(13) & Chr(10))
Case Else : aj_s_tmp = aj_s_tmp & aj_char_tmp
End Select
End If
Next

CleanUpJSONstring = \”\”
aj_s_tmp = split(aj_s_tmp, Chr(13) & Chr(10))
For Each aj_line_tmp In aj_s_tmp
aj_line_tmp = replace(replace(aj_line_tmp, chr(10), \”\”), chr(13), \”\”)
CleanUpJSONstring = CleanUpJSONstring & aj_Trim(aj_line_tmp) & Chr(13) & Chr(10)
Next
End Function

Private Function getJSONValue(ByVal val)
val = Trim(val)
If Left(val,1) = \”:\” Then val = Mid(val, 2)
If Right(val,1) = \”,\” Then val = Left(val, Len(val) – 1)
val = Trim(val)

Select Case val
Case \”true\” : getJSONValue = True
Case \”false\” : getJSONValue = False
Case \”null\” : getJSONValue = Null
Case Else
If (Instr(val, \”\”\”\”) = 0) Then
If IsNumeric(val) Then
getJSONValue = CDbl(val)
Else
getJSONValue = val
End If
Else
If Left(val,1) = \”\”\”\” Then val = Mid(val, 2)
If Right(val,1) = \”\”\”\” Then val = Left(val, Len(val) – 1)
getJSONValue = aj_JSONDecode(Trim(val))
End If
End Select
End Function

Private JSONoutput_level
Public Function JSONoutput()
dim wrap_dicttype, aj_label
JSONoutput_level = 1
wrap_dicttype = \”[]\”
For Each aj_label In data
If Not aj_IsInt(aj_label) Then wrap_dicttype = \”{}\”
Next
JSONoutput = Left(wrap_dicttype, 1) & Chr(13) & Chr(10) & GetDict(data) & Right(wrap_dicttype, 1)
End Function

Private Function GetDict(objDict)
dim aj_item, aj_keyvals, aj_label, aj_dicttype
For Each aj_item In objDict
Select Case TypeName(objDict.Item(aj_item))
Case \”Dictionary\”
GetDict = GetDict & Space(JSONoutput_level * 4)

aj_dicttype = \”[]\”
For Each aj_label In objDict.Item(aj_item).Keys
If Not aj_IsInt(aj_label) Then aj_dicttype = \”{}\”
Next
If aj_IsInt(aj_item) Then
GetDict = GetDict & (Left(aj_dicttype,1) & Chr(13) & Chr(10))
Else
GetDict = GetDict & (\”\”\”\” & aj_JSONEncode(aj_item) & \”\”\”\” & \”: \” & Left(aj_dicttype,1) & Chr(13) & Chr(10))
End If
JSONoutput_level = JSONoutput_level + 1

aj_keyvals = objDict.Keys
GetDict = GetDict & (GetSubDict(objDict.Item(aj_item)) & Space(JSONoutput_level * 4) & Right(aj_dicttype,1) & aj_InlineIf(aj_item = aj_keyvals(objDict.Count – 1),\”\” , \”,\”) & Chr(13) & Chr(10))
Case Else
aj_keyvals = objDict.Keys
GetDict = GetDict & (Space(JSONoutput_level * 4) & aj_InlineIf(aj_IsInt(aj_item), \”\”, \”\”\”\” & aj_JSONEncode(aj_item) & \”\”\”: \”) & WriteValue(objDict.Item(aj_item)) & aj_InlineIf(aj_item = aj_keyvals(objDict.Count – 1),\”\” , \”,\”) & Chr(13) & Chr(10))
End Select
Next
End Function

Private Function aj_IsInt(val)
aj_IsInt = (TypeName(val) = \”Integer\” Or TypeName(val) = \”Long\”)
End Function

Private Function GetSubDict(objSubDict)
GetSubDict = GetDict(objSubDict)
JSONoutput_level= JSONoutput_level -1
End Function

Private Function WriteValue(ByVal val)
Select Case TypeName(val)
Case \”Double\”, \”Integer\”, \”Long\”: WriteValue = val
Case \”Null\” : WriteValue = \”null\”
Case \”Boolean\” : WriteValue = aj_InlineIf(val, \”true\”, \”false\”)
Case Else : WriteValue = \”\”\”\” & aj_JSONEncode(val) & \”\”\”\”
End Select
End Function

Private Function aj_JSONEncode(ByVal val)
val = Replace(val, \”\\\”, \”\\\\\”)
val = Replace(val, \”\”\”\”, \”\\\”\”\”)
\’val = Replace(val, \”/\”, \”\\/\”)
val = Replace(val, Chr(8), \”\\b\”)
val = Replace(val, Chr(12), \”\\f\”)
val = Replace(val, Chr(10), \”\\n\”)
val = Replace(val, Chr(13), \”\\r\”)
val = Replace(val, Chr(9), \”\\t\”)
aj_JSONEncode = Trim(val)
End Function

Private Function aj_JSONDecode(ByVal val)
val = Replace(val, \”\\\”\”\”, \”\”\”\”)
val = Replace(val, \”\\\\\”, \”\\\”)
val = Replace(val, \”\\/\”, \”/\”)
val = Replace(val, \”\\b\”, Chr(8))
val = Replace(val, \”\\f\”, Chr(12))
val = Replace(val, \”\\n\”, Chr(10))
val = Replace(val, \”\\r\”, Chr(13))
val = Replace(val, \”\\t\”, Chr(9))
aj_JSONDecode = Trim(val)
End Function

Private Function aj_InlineIf(condition, returntrue, returnfalse)
If condition Then aj_InlineIf = returntrue Else aj_InlineIf = returnfalse
End Function

Private Function aj_Strip(ByVal val, stripper)
If Left(val, 1) = stripper Then val = Mid(val, 2)
If Right(val, 1) = stripper Then val = Left(val, Len(val) – 1)
aj_Strip = val
End Function

Private Function aj_MultilineTrim(TextData)
aj_MultilineTrim = aj_RegExp.Replace(TextData, \”$1\”)
End Function

private function aj_Trim(val)
aj_Trim = Trim(val)
Do While Left(aj_Trim, 1) = Chr(9) : aj_Trim = Mid(aj_Trim, 2) : Loop
Do While Right(aj_Trim, 1) = Chr(9) : aj_Trim = Left(aj_Trim, Len(aj_Trim) – 1) : Loop
aj_Trim = Trim(aj_Trim)
end function
End Class
%>

AspJson官方使用方法参考

<!–#include virtual=\”/aspJSON1.17.asp\” –>
<%
Set oJSON = New aspJSON

\’Load JSON string
oJSON.loadJSON(jsonstring)

\’Get single value
Response.Write oJSON.data(\”firstName\”) & \”<br>\”

\’Loop through collection
For Each phonenr In oJSON.data(\”phoneNumber\”)
Set this = oJSON.data(\”phoneNumber\”).item(phonenr)
Response.Write _
this.item(\”type\”) & \”: \” & _
this.item(\”number\”) & \”<br>\”
Next

\’Update/Add value
oJSON.data(\”firstName\”) = \”James\”

\’Return json string
Response.Write oJSON.JSONoutput()
%>

示例一—输出json

<!–#include virtual=\”/aspJSON1.17.asp\” –>
<%
Set oJSON = New aspJSON

With oJSON.data

.Add \”familyName\”, \”Smith\” \’Create value
.Add \”familyMembers\”, oJSON.Collection()

With oJSON.data(\”familyMembers\”)

.Add 0, oJSON.Collection() \’Create object
With .item(0)
.Add \”firstName\”, \”John\”
.Add \”age\”, 41
End With

.Add 1, oJSON.Collection()
With .item(1)
.Add \”firstName\”, \”Suzan\”
.Add \”age\”, 38
.Add \”interests\”, oJSON.Collection() \’Create array
With .item(\”interests\”)
.Add 0, \”Reading\”
.Add 1, \”Tennis\”
.Add 2, \”Painting\”
End With
End With

.Add 2, oJSON.Collection()
With .item(2)
.Add \”firstName\”, \”John Jr.\”
.Add \”age\”, 2.5
End With

End With

End With

Response.Write oJSON.JSONoutput() \’Return json string
%>

示例二—转换为json格式输出

读取数据库中article表数据,转换为json格式数据输出

dim oJSON
Set oJSON = New aspJSON
sql=\”Select * From article where IsSelected=1 and getdate() between isnull(showBeginTime,\’1900-1-1 00:00:00\’) and isnull(showEndTime,getdate()) and (\’,\’+UserTypeNo+\’,\’ like \’%,\”&OAUserTypeNo&\”,%\’ or UserTypeNo=\’\’)\”
\’response.Write(sql)
set rs=server.CreateObject(\”adodb.recordset\”)
OpenConn : rs.open sql,Conn,1,3
dim n
n=0

With oJSON.data
do while not rs.eof

.Add n, oJSON.Collection()
With .item(n)
.Add \”ID\”, \”\”&rs(\”ID\”)&\”\”
.Add \”Title\”, \”\”&rs(\”Title\”)&\”\”
.Add \”IsActivityTime\”, \”\”&rs(\”IsActivityTime\”)&\”\”
.Add \”activityBeginTime\”, \”\”&rs(\”activityBeginTime\”)&\”\”
.Add \”activityEndTime\”, \”\”&rs(\”activityEndTime\”)&\”\” \’Create value
End With
n=n+1
rs.movenext
loop
End With
Response.Write oJSON.JSONoutput() \’Return json string

示例三—JS读取Json

前端js使用ajax调用后端接口,获取到上面的json数据,解析输出。

var postData=\”Action=Announce\”
//alert(postData)
digtalMessage=\”\”;
digtalMessageAll=\”\”;

$.ajax({
type: \”GET\”,
url: \”/OKOA/CN/AjaxInfo.asp\”,
data: postData,
success: function(msg){
//alert( \”Data Saved: \” + msg );

var obj = jQuery.parseJSON(msg);
$.each(obj,function(idx,item){
//alert(item.activityBeginTime)
digtalMessage=DigitalTime1(item.Title,item.Title,item.activityBeginTime,item.activityEndTime);

digtalMessageAll=digtalMessageAll+\” <a class=\\\”Default\\\” onClick=\\\”OpenWin(\’/OKOA/Announce.asp?ID=\”+item.ID+\”\’,\’Annonce_\”+item.ID+\”\’)\\\” href=\\\”#\\\”>\”+digtalMessage+\”</a>;\”
})
document.getElementById(\”LiveClock1\”).innerHTML=digtalMessageAll;
}
});

总结

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