js创建xml对象

我们经常会用到xml操作，如下介绍了js、sql、vb等对xml的操作。

JS创建xml对象

//创建对象
function getDataXML() {
    var objTds = $("TEXTAREA");
    var count = objTds.length;
    var jsonData;
    var xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
    //创建根元素
    var root = xmlDoc.createElement("DtCostRecollectOverView");
    xmlDoc.appendChild(root);
    for (var i = 0; i < count; i++) {
        var chatRoom = xmlDoc.createElement(objTds[i].name);
        chatRoom.text = objTds[i].value;
        root.appendChild(chatRoom);
    }
    return xmlDoc.xml;
}

sql解析xml

DECLARE @params xml
 DECLARE @customparams xml = null
 -- 0、解析输入参数
 DECLARE @filter nvarchar (max)
 SET @filter = @params. value( '(/params/filter)[1]' , 'nvarchar(max)') 

 -- 0.2、 (2=2)
 DECLARE @customfilter nvarchar (max)
 SET @customfilter = @params. value ( '(/params/customfilter)[1]', 'nvarchar(max)')
 IF @customfilter = N''
  SET @customfilter = N'2=2'

 -- 0.3、每页显示记录数
 DECLARE @pagesize int
 SET @pagesize = @params. value( '(/params/pagesize)[1]' , 'int') 

 -- 0.4、页码
 DECLARE @pagenum int
 SET @pagenum = @params. value( '(/params/pagenum)[1]' , 'int') 

 -- 0.5、排序字段
 DECLARE @sortcol nvarchar (100)
 SET @sortcol = @params. value( '(/params/sortcol)[1]' , 'nvarchar(100)')
 IF @sortcol IS NULL OR @sortcol = ''
  SET @sortcol = N' p_Provider.ProviderGUID' -- 注意：根据XML中的定义设置默认排序 !!!
 ELSE
  SET @sortcol = @sortcol + N' ,p_Provider.ProviderGUID'    -- 注意：如果 XML中配置了实体主键，这里要拼接主键排序

 -- 0.6、当前公司
 DECLARE @buguid nvarchar (100)
 SET @buguid = @customparams. value ( '(/params/BUGUID)[1]', 'nvarchar(100)') -- 注意：变量大小写与vb代码一致 !!!

 -- 0.7、当前产品服务 Code
 DECLARE @productcode nvarchar (4000)
 SET @productcode = @params. value ( '(/params/customfilter2)[1]', 'nvarchar(4000)')

VB中创建XML

这里是原生的做法，具体使用可做相应的封装：

Private Function GetUpdateRoomXml() As String
        Dim xmlDOM As New XmlDocument
        Dim xmlGACode As XmlElement = xmlDOM.CreateElement("SAVEAREA")
        For Each dr As DataRow In dtUpdate_p_Room.Rows
            Dim xmlRow As XmlElement = xmlDOM.CreateElement("ITEMS")
            Dim xmlRoomGUID As XmlElement = xmlDOM.CreateElement("RoomGUID")
            Dim xmlGABldCode As XmlElement = xmlDOM.CreateElement("GABldCode")
            Dim xmlGAUnitCode As XmlElement = xmlDOM.CreateElement("GAUnitCode")
            Dim xmlGARoomCode As XmlElement = xmlDOM.CreateElement("GARoomCode")
            Dim xmlGACode0 As XmlElement = xmlDOM.CreateElement("GACode")
            Dim xmlRoomCode As XmlElement = xmlDOM.CreateElement("RoomCode")
            xmlRoomGUID.InnerText = dr.Item("RoomGUID").ToString()
            xmlGABldCode.InnerText = dr.Item("GABldCode").ToString()
            xmlGAUnitCode.InnerText = dr.Item("GAUnitCode").ToString()
            xmlGARoomCode.InnerText = dr.Item("GARoomCode").ToString()
            xmlGACode0.InnerText = dr.Item("GACode").ToString()
            xmlRoomCode.InnerText = dr.Item("RoomCode").ToString()
            xmlRow.AppendChild(xmlRoomGUID)
            xmlRow.AppendChild(xmlGABldCode)
            xmlRow.AppendChild(xmlGAUnitCode)
            xmlRow.AppendChild(xmlGARoomCode)
            xmlRow.AppendChild(xmlGACode0)
            xmlRow.AppendChild(xmlRoomCode)
            xmlGACode.AppendChild(xmlRow)
        Next
        Return xmlGACode.OuterXml
    End Function