Question

我有demo.properties文件，我可以加载文件并迭代以获取其中的所有值。 hibernate.connection.username=jack hibernate.connection.password=queen hibernate.connection.url=jdbc:jtds:sqlserver://localhost/cabinet

但是当我得到第1行（能够逐行获取但无法获得特定字符串）并且我想填充插孔并存储到用户名字符串中同样使用密码字符串进入密码字符串并将localhost存入数据库字符串。这是我的代码/获得价值的逻辑。

procedure InitializeWizard;
var  

  xmlInhalt: TArrayOfString;  
  k : Integer;
  CurrentLine : String;
  Uname : String;  
   Password : String;
   HostName : String;
   STR : String;                        

begin
          LoadStringsFromFile('C:\demo.properties', xmlInhalt);
          for k:=0 to GetArrayLength(xmlInhalt)<>-1 do
          begin
            CurrentLine := xmlInhalt[k];
            MsgBox(CurrentLine, mbError, MB_OK);
            if (Pos('hibernate.connection.username=', CurrentLine) <>-1 ) then
                begin
                              MsgBox(CurrentLine, mbError, MB_OK);
                    Uname := Pos('://', CurrentLine);
                    STR :=IntToStr(Uname);    
                    STR :=IntToStr(Length('://')); 
                    Password := Pos(':1', CurrentLine);
                    HostName :=Password -Uname;                  

              end;    
         end; 
end;

请帮助我了解我的要求。非常感谢您的帮助。

Answer 1

如果TStrings类已发布NameValueSeparator和Values属性，我建议您使用它。但它没有，所以这里有一个解决方法的代码（它使用TArrayOfString，但很容易为TStrings类修改它：

[Setup]
AppName=My Program
AppVersion=1.5
DefaultDirName={pf}\My Program

[Code]
function TryGetValue(const Strings: TArrayOfString; const Name: string;
  out Value: string): Boolean;
var
  S: string;
  P: Integer;
  I: Integer;
begin
  Result := False;
  // loop through the array
  for I := 0 to GetArrayLength(Strings) - 1 do
  begin
    // store the currently iterated string into a local variable
    S := Strings[I];
    // try to get position of the name value separator ('='in this case)
    P := Pos('=', S);
    // if the separator was found on this line, and a text on the left of
    // it matches (case insensitively) the input Name parameter value, we
    // found what we were looking for, so return True and the rest of the
    // text after the found separator
    if (P <> 0) and (CompareText(Copy(S, 1, P - 1), Name) = 0) then
    begin
      Value := Copy(S, P + 1, MaxInt);
      Result := True;
      Exit;
    end;
  end;
end;

// do note, that this function may not conform the RFC 3986 specification;
// preferred way should be e.g. InternetCrackUrl, but with this particular
// scheme (jdbc:jtds:sqlserver) it didn't crack the URL properly
function GetHostName(const URL: string): string;
var
  P: Integer;
begin
  Result := '';
  P := Pos('://', URL);
  if P <> 0 then
  begin
    Result := Copy(URL, P + 3, MaxInt);
    P := Pos('/', Result);
    if P = 0 then
      P := MaxInt;
    Result := Copy(Result, 1, P - 1);
  end;
end;

procedure InitializeWizard;
var  
  URL: string;
  HostName: string;
  UserName: string;
  Password: string;
  StrArray: TArrayOfString;
begin
  if LoadStringsFromFile('C:\File.txt', StrArray) then
  begin
    TryGetValue(StrArray, 'hibernate.connection.url', URL);
    HostName := GetHostName(URL);
    TryGetValue(StrArray, 'hibernate.connection.username', UserName);
    TryGetValue(StrArray, 'hibernate.connection.password', Password);
    MsgBox(Format(
      'HostName: %s' + #13#10 + 'UserName: %s' + #13#10 + 'Password: %s', [
      HostName, UserName, Password]
    ), mbInformation, MB_OK);
  end; 
end;

无法在文件中查找字符串并使用innosetup填充它？

1 个答案: