function TXmlHelper.ModifyNodeElementValue(targetNode: IXmlNode;
sNewElementValue: WideString): Boolean;
begin
Result := false;
try
if(targetNode.ReadOnly) then
exit;
targetNode.NodeValue := Encode(sNewElementValue);
Result := true;
except
Result := false;
end;
end;
function TXmlHelper.CreateNodeAttribute(targetNode: IXmlNode; sAttrName,
sAttrValue: WideString): Boolean;
begin
targetNode.SetAttributeNS(sAttrName,targetNode.NamespaceURI,Encode(sAttrValue));
end;
function TXmlHelper.DeleteNodeAttribute(targetNode: IXmlNode;
sAttrName: WideString): Boolean;
var
oAttrXmlNode : IXmlNode;
nRet : Integer;
begin
Result := false;
try
oAttrXmlNode := targetNode.AttributeNodes[sAttrName];
if( (oAttrXmlNode <> nil) and (oAttrXmlNode.NodeType = ntAttribute) ) then
begin
nRet := targetNode.AttributeNodes.Remove(oAttrXmlNode);
if(nRet <> -1) then
Result := true;
end;
except
Result := false;
end;
end;
function TXmlHelper.ModifyNodeAttributeValue(targetNode: IXmlNode;
sAttrName, sNewAttrValue: WideString): Boolean;
begin
targetNode.SetAttributeNS(sAttrName,targetNode.NamespaceURI,Encode(sNewAttrValue));
end;
function TXmlHelper.GetChildNodesFromRoot(
sElementName: WideString): TObjectList;
var
I : Integer;
node : IXmlNode;
nodeslists : TObjectList;
selectNode : TXmlNodeObject;
begin
node := RootNode;
nodeslists := TObjectList.Create;
for I := 0 to node.ChildNodes.Count - 1 do // Iterate
begin
if node.ChildNodes[I].NodeName = sElementName then
begin
selectNode := TXmlNodeObject.Create;
selectNode.XmlNode := node.ChildNodes[I];
nodeslists.Add(selectNode);
end;
end; // for
Result := nodeslists;
end;
function TXmlHelper.GetFirstChildXmlNode(parentNode: IXmlNode;
sElementname: WideString): IXmlNode;
var
I: Integer;
foundNode : IXmlNode;
begin
foundNode := nil;
for I := 0 to parentNode.ChildNodes.Count - 1 do // Iterate
begin
if parentNode.ChildNodes[I].NodeName = sElementName then
begin
foundNode := parentNode.ChildNodes[I];
break;
end
end; // for
Result := foundNode;
end;
function TXmlHelper.GetFirstChildXmlNodeFromRoot(
sElementName: WideString): TXmlNodeObject;
var
nodeslists : TObjectList;
begin
if nodeslists.Count > 0 then
Result := nodeslists[0] as TXmlNodeObject;
end;
function TXmlHelper.GetRecursiveChildNodesFromParent(parentNode : IXmlNode;
sElementName: WideString): TObjectList;
var
I,J,K: Integer;
childNodeLists : TObjectList;
tmpChildNodeLists : TObjectList;
selectNode : TXmlNodeObject;
begin
childNodeLists := TObjectList.Create;
for I := 0 to parentNode.ChildNodes.Count - 1 do // Iterate
begin
if parentNode.ChildNodes[I].NodeName = sElementName then
begin
selectNode := TXmlNodeObject.Create;
selectNode.XmlNode := parentNode.ChildNodes[I];
childNodeLists.Add(selectNode);
end;
//Recursive
if parentNode.ChildNodes[I].HasChildNodes then
begin
tmpChildNodeLists := GetRecursiveChildNodesFromParent(parentNode.ChildNodes[I],sElementName);
for J := 0 to tmpChildNodeLists.Count - 1 do // Iterate
childNodeLists.Add(tmpChildNodeLists.Items[J]);
//这里如果不注释掉总会有异常抛出,不知道为什么,所以递归调用时,这里会有内存没有Free!!!
//有内存息漏
{if tmpChildNodeLists <> nil then
begin
tmpChildNodeLists.Clear;
tmpChildNodeLists.Free;
end;
}
end;
end; // for
Result := childNodeLists;
end;
function TXmlHelper.CreateNodeElement(parentNode: IXmlNode; sElementName,
sElementValue: WideString): IXmlNode;
var
childNode : IXmlNode;
begin
childNode := parentNode.AddChild(sElementName);
if sElementValue <> '' then
begin
childNode.NodeValue := Encode(sElementValue);
end;
Result := childNode;
end;
function TXmlHelper.DeleteNodeElement(targetNode: IXmlNode): Boolean;
var
nRet : Integer;
begin
Result := false;
try
nRet := targetNode.ParentNode.ChildNodes.Remove(targetNode);
if(nRet <> -1) then
Result := true;
function TXmlHelper.GetRootNode : IXmlNode;
var
nIndex : Integer;
firstnode : IXmlNode;
begin
if(m_XmlDoc = nil) then
raise EInvalidArgument.Create('XmlHelper ÀïµÄDocument Ϊ¿Õ');
nIndex := 0;
firstnode := m_XmlDoc.ChildNodes[nIndex];
while (firstnode.NodeType <> ntElement) do
begin
nIndex := nIndex + 1;
if nIndex >= m_XmlDoc.ChildNodes.Count then
raise EOverflow.Create('XmlHelper 里的document为空');
firstnode := m_XmlDoc.ChildNodes[nIndex];
end;
Result := firstnode;
end;
//节点属性为true or yes 返回真
//否则返回假
function TXmlHelper.GetAttributeBoolean(node: IXmlNode;
sAttributeName: WideString): Boolean;
var
sAttrValue : string;
begin
Result := false;
sAttrValue := GetAttributeValue(node,sAttributeName);
if( (LowerCase(sAttrValue) = 'true') or (LowerCase(sAttrValue) ='yes') ) then
Result := true ;
end;
function TXmlHelper.GetAttributeDouble(node: IXmlNode;
sAttributeName: WideString): Double;
var
sAttrValue : string;
dAttrValue : Double;
begin
if( TryStrToFloat(sAttrValue,dAttrValue) ) then
Result := dAttrValue;
end;
function TXmlHelper.GetAttributeInt32(node: IXmlNode;
sAttributeName: WideString): Integer;
var
sAttrValue : string;
nAttrValue : Integer;
begin
Result := 0;
if( TryStrToInt(sAttrValue,nAttrValue) ) then
Result := nAttrValue;
end;
function TXmlHelper.GetAttributeValue(node: IXmlNode;
sAttributeName: WideString): WideString;
begin
if ( node.HasAttribute(sAttributeName) ) then
begin
Result := Decode(node.Attributes[sAttributeName]);
end
else
raise EXmlDocError.Create('节点没有指定的属性');
end;
function TXmlHelper.GetChildElementBoolean(parentNode: IXmlNode;
sElementName: WideString): Boolean;
var
sElementValue : string;
bElementValue : Boolean;
begin
Result := false;
sElementValue := GetChildElementValue(parentNode,sElementName);
if( (LowerCase(sElementValue) = 'true') or (LowerCase(sElementValue) ='yes') ) then
Result := true;
end;
function TXmlHelper.GetChildElementDouble(parentNode: IXmlNode;
sElementName: WideString): Double;
var
sElementValue : string;
dElementValue : Double;
begin
Result := 0.00;
sElementValue := GetChildElementValue(parentNode,sElementName);
if TryStrToFloat(sElementValue,dElementValue) then
Result := dElementValue;
end;
function TXmlHelper.GetChildElementInt32(parentNode: IXmlNode;
sElementName: WideString): Integer;
var
sElementValue : string;
nElementValue : Integer;
begin
Result := 0;
sElementValue := GetChildElementValue(parentNode,sElementName);
if TryStrToInt(sElementValue,nElementValue) then
Result := nElementValue;
end;
function TXmlHelper.GetChildElementValue(parentNode: IXmlNode;
sElementName: WideString): WideString;
var
I : Integer;
childNodeList : IXmlNodeList;
childNode : IXmlNode;
bFind : Boolean;
begin
Result := '';
bFind := false;
childNodeList := parentNode.ChildNodes;
for I := 0 to childNodeList.Count - 1 do // Iterate
begin
if(childNodeList[I].NodeName = sElementName) then
begin
childNode := childNodeList[I];
bFind := true;
break;
end
end; // for
if bFind then
Result := GetElementValue(childNode);
constructor TXmlHelper.Create(xmlDoc: IXmlDocument);
begin
Inherited Create;
m_sLastErrorMessage := '';
if( xmlDoc = nil) then
begin
m_XmlDoc := TXMLDocument.Create(nil);
end
else begin
m_XmlDoc := xmlDoc;
end;
end;
destructor TXmlHelper.Free;
begin
if(m_XmlDoc <> nil) then
begin
//m_XmlDoc.Free;
m_XmlDoc.Active := False;
m_XmlDoc := nil;
end;
inherited Destroy;
end;
function TXmlHelper.GetDocument: IXmlDocument;
begin
Result := m_XmlDoc;
end;
function TXmlHelper.GetEncoding: WideString;
begin
if( m_XmlDoc = nil) then
raise EInvalidArgument.Create('XmlHelper ÀïµÄDocument Ϊ¿Õ');
Result := m_XmlDoc.Encoding;
end;
procedure TXmlHelper.SetEncoding(const Value: WideString);
begin
if( m_XmlDoc = nil) then
raise EInvalidArgument.Create('XmlHelper ÀïµÄDocument Ϊ¿Õ');
m_XmlDoc.Encoding := Value;
end;
function TXmlHelper.GetXmlString: WideString;
begin
if( m_XmlDoc = nil) then
raise EInvalidArgument.Create('XmlHelper ÀïµÄDocument Ϊ¿Õ');
Result := m_XmlDoc.XML.Text;
end;
function TXmlHelper.LoadXML(sourceXMLOrFile: WideString;
loadType: TXmlLoadType): Boolean;
begin
Result := false;
try
case loadType of
FromString : m_XmlDoc.LoadFromXML(sourceXMLOrFile);
FromLocalFile : m_XmlDoc.LoadFromFile(sourceXMLOrFile);
FromURL : m_XmlDoc.FileName := sourceXMLOrFile;
else
raise EInvalidArgument.Create('XmlHelper 里的document为空');
end;
m_XmlDoc.Active := true;
Result := true;
except
Result := false;
end;
end;
function TXmlHelper.SaveToFile(sTargetFileName: WideString): Boolean;
begin
Result := false;
try
m_XmlDoc.SaveToFile(sTargetFileName);
Result := true;
except
Result := false;
end;
end;
function SaveToFile(sTargetFileName : WideString):Boolean;
function GetXmlString: WideString;
function LoadXML(sourceXMLOrFile:WideString;loadType:TXmlLoadType):Boolean;
function GetAttributeValue(node : IXmlNode; sAttributeName : WideString):WideString;
function GetAttributeInt32(node : IXmlNode; sAttributeName : WideString):Integer;
function GetAttributeDouble(node : IXmlNode; sAttributeName : WideString):Double;
function GetAttributeBoolean(node : IXmlNode; sAttributeName : WideString):Boolean;
function GetElementValue(node : IXmlNode):WideString;
function GetElementInt32(node : IXmlNode):Integer;
function GetElementDouble(node : IXmlNode):Double;
function GetElementBoolean(node : IXmlNode):Boolean;
function GetChildElementValue(parentNode : IXmlNode;sElementName : WideString):WideString;
function GetChildElementInt32(parentNode : IXmlNode;sElementName : WideString):Integer;
function GetChildElementDouble(parentNode : IXmlNode;sElementName : WideString):Double;
function GetChildElementBoolean(parentNode : IXmlNode;sElementName : WideString):Boolean;
function GetFirstChildXmlNodeFromRoot(sElementName : WideString) : TXmlNodeObject;
function GetFirstChildXmlNode(parentNode : IXmlNode;sElementname : WideString) : IXmlNode;
function GetChildNodesFromRoot( sElementName : WideString ) : TObjectList;
function GetRecursiveChildNodesFromParent(parentNode : IXmlNode;sElementName : WideString) : TObjectList;