使用的是RegExprvar reg:TRegExpr; s:string; begin s := 'xx_123456789_0_0'; reg := TRegExpr.Create; reg.Expression := '[\d]{9}'; s := reg.Replace(s,'333'); ShowMessage(s); reg.Free; end;
TperlRegEx是这样用的 var PerlRegEx1:TPerlRegEx;beginPerlRegEx1 := TperlRegEx.Create;with PerlRegEx1 do begin Subject := 'abc=xx_123456789_0_0'; //设置待匹配的字符串 RegEx := 'abc=xx_([^_]+)_0_0';//设置正则表达式 study; //学习该表达式,如果需要多次使用的话 replaceMent := ‘123’; //设置被替换成什么 if Match then replace; //替换end;
var PerlRegEx1:TPerlRegEx;beginPerlRegEx1 := TperlRegEx.Create;with PerlRegEx1 do begin Subject := 'abc=xx_123456789_0_0'; //设置待匹配的字符串 RegEx := 'abc=xx_([^_]+)_0_0';//设置正则表达式 study; //学习该表达式,如果需要多次使用的话 replaceMent := ‘123’; //设置被替换成什么 if Match then replace; //替换 showMessage(Subject); end; PerlRegEx1.free;
with TPerlRegEx.Create do try RegEx := '(?<=abc=xx_)(\d+)(?=_0_0)'; Subject := 'abc=xx_123456789_0_0'; Replacement := '333'; if Match then begin Replace; ShowMessage(Subject); end finally Free end;
reg:TRegExpr;
s:string;
begin
s := 'xx_123456789_0_0';
reg := TRegExpr.Create;
reg.Expression := '[\d]{9}';
s := reg.Replace(s,'333');
ShowMessage(s);
reg.Free;
end;
var PerlRegEx1:TPerlRegEx;beginPerlRegEx1 := TperlRegEx.Create;with PerlRegEx1 do begin Subject := 'abc=xx_123456789_0_0'; //设置待匹配的字符串 RegEx := 'abc=xx_([^_]+)_0_0';//设置正则表达式 study; //学习该表达式,如果需要多次使用的话 replaceMent := ‘123’; //设置被替换成什么 if Match then replace; //替换end;
end;
PerlRegEx1.free;
try
RegEx := '(?<=abc=xx_)(\d+)(?=_0_0)';
Subject := 'abc=xx_123456789_0_0';
Replacement := '333';
if Match then
begin
Replace;
ShowMessage(Subject);
end
finally
Free
end;
RegExp1.IgnoreCase := True;
RegExp1.Pattern := 'abc=xx_\d*';
Edit2.Text := RegExp1.Replace(Edit1.text,'333'); Edit1.text := abc=xx_123456789_0_0