inno-setup – 需要关于Inno安装脚本的帮助 – 检查jre安装问题

我使用以下脚本来安装 Java程序.我正面临着这个脚本的2个问题.
如果您知道这些问题的解决方案,请通知我.我非常感谢您的时间

> JRE检查发生了2次,即安装开始和安装结束.我希望JRE检查仅在安装开始时发生
>我正在检查下面的Windows注册表项以检查JRE,并且此脚本不适用于所有情况.我的意思是有些时候这是有效的,有时候失败了64位JRE安装.我正在寻找一个逻辑来检查所有方案的注册表(即32位,64位和所有Windows版本)

; Script generated by the Inno Setup Script Wizard.
; SEE THE DOCUMENTATION FOR DETAILS ON CREATING INNO SETUP SCRIPT FILES!

#define MyAppName "Test"
#define MyAppVersion "1.0"
#define MyAppPublisher "Test"
#define MyAppURL "gmail.com"
#define MyAppExeName "abc.exe"
#define MinJRE "1.6"


[Setup]
; NOTE: The value of AppId uniquely identifies this application.
; Do not use the same AppId value in installers for other applications.
;(To generate a new GUID,click Tools | Generate GUID inside the IDE.)
AppId={{200DC169-9647-4295-91B4-B1D1D8482B82}
AppName={#MyAppName}
AppVersion={#MyAppVersion}
;AppVerName={#MyAppName} {#MyAppVersion}
AppPublisher={#MyAppPublisher}
AppPublisherURL={#MyAppURL}
AppSupportURL={#MyAppURL}
AppUpdatesURL={#MyAppURL}
DefaultDirName={userdocs}\xsxsxs\bvb
disableDirPage=yes
DefaultGroupName=test
disableProgramGroupPage=yes
AllowNoIcons=yes
LicenseFile=C:\test\Installers_PC_MAC\CORRECTIONS_TO_INSTALLER_BUGS\TemsOfUse.txt
OutputDir=C:\test\test
OutputBaseFilename=test
SetupIconFile=C:\test\Installers_PC_MAC\CORRECTIONS_TO_INSTALLER_BUGS\Icon\icon.ico
Compression=lzma
SolidCompression=yes
Privilegesrequired=lowest


[Tasks]
Name: "desktopicon"; Description: "{cm:CreateDesktopIcon}"; GroupDescription: "{cm:AdditionalIcons}"; Flags: unchecked
Name: "quicklaunchicon"; Description: "{cm:CreateQuickLaunchIcon}"; GroupDescription: "{cm:AdditionalIcons}"; Flags: unchecked; OnlyBelowVersion: 0,6.1

[Dirs]
Name: "{app}\Graphics"
Name: "{app}\lib"
Name: "{app}\Database"
Name: "{app}\Grades"
Name: "{app}\HelpFiles"
Name: "{app}\images"
Name: "{app}\Scripts"

[Files]

Source: "C:\test\Installers_PC_MAC\CORRECTIONS_TO_INSTALLER_BUGS\test.exe"; DestDir: "{app}"; Flags: ignoreversion;
Source: "C:\test\Installers_PC_MAC\CORRECTIONS_TO_INSTALLER_BUGS\Graphics\*"; DestDir: "{app}\Graphics"; Flags: ignoreversion recursesubdirs createallsubdirs
Source: "C:\test\Installers_PC_MAC\CORRECTIONS_TO_INSTALLER_BUGS\lib\*"; DestDir: "{app}\lib"; Flags: ignoreversion recursesubdirs createallsubdirs
Source: "C:\test\Installers_PC_MAC\CORRECTIONS_TO_INSTALLER_BUGS\DataBase\*"; DestDir: "{app}\DataBase"; Flags: ignoreversion recursesubdirs createallsubdirs
Source: "C:\test\Installers_PC_MAC\CORRECTIONS_TO_INSTALLER_BUGS\Grades\*"; DestDir: "{app}\Grades"; Flags: ignoreversion recursesubdirs createallsubdirs


[Icons]
Name: "{group}\test"; Filename: "{app}\{#MyAppExeName}"
Name: "{group}\{cm:uninstallProgram,test}"; Filename: "{uninstallexe}"
Name: "{commondesktop}\{#MyAppName}"; Filename: "{app}\{#MyAppExeName}"; Tasks: desktopicon
Name: "{userappdata}\Microsoft\Internet Explorer\Quick Launch\{#MyAppName}"; Filename: "{app}\{#MyAppExeName}"; Tasks: quicklaunchicon

[Run]
Filename: "{app}\{#MyAppExeName}"; Description: "{cm:LaunchProgram,{#StringChange(MyAppName,'&','&&')}}";check:InitializeSetup; Flags: Nowait postinstall skipifsilent


[Code]

function installJRE(): Boolean;
   var
   Result1 : Boolean;
   ErrorCode: Integer;
   begin
   Result1 := false;

   Result1 := MsgBox('Java is required to run the program you are trying to install. Please click on Yes button given below to close this installer and be directed to a website were you can download and install Java.',mbConfirmation,MB_YESNO) = idYes;
   if Result1 = false then
   begin
   // user can install the Java later also
   Result:=true;
   end else
   begin
   Result:=false;        
   ShellExec('open','http://www.oracle.com/technetwork/java/javase/downloads/jre6downloads-1902815.html','',SW_SHOWnorMAL,ewNowait,ErrorCode);
  end;
end;


function InitializeSetup(): Boolean;
var 
 jreversion: String;                            
   begin
   Result := False; 
     if ((RegValueExists(HKEY_LOCAL_MACHINE,'SOFTWARE\JavaSoft\Java Runtime Environment','CurrentVersion'))) then
     begin      
      RegQueryStringValue(HKLM,'Software\JavaSoft\Java Runtime Environment','CurrentVersion',jreversion);
      if CompareStr(jreversion,'{#MinJRE}') > 0 then 
      begin      
          Result:=true;
       end else
       begin
        if(installJRE) then
         Result:=true;  
      end;      
       end else
        if(installJRE) then
        Result:=true;
       end;
    end.

解决方法

为什么在将InitializeSetup函数用作Check函数时多次调用它？

您正在使用InitializeSetup事件方法作为Check函数,这是导致多次调用此方法的原因.第一次初始化设置时(作为实际事件方法)和下一次检查确定时,是否应打开[Run]部分中的文件条目.

基本上,使用Check函数的事件方法是错误的.您甚至不应该手动调用它们,只需让安装程序应用程序触发它们即可.在你的情况下,而是创建一个函数,只检查是否安装了JRE并使用这样的功能进行检查.

如何获得Java SE Runtime Environment版本？

您不需要将设置作为64位运行.您只需从WOW注册表节点读取即可在64位Windows上获取64位JRE的版本.我试着用这样的东西：

[Run]
Filename: "{app}\MyApp.exe"; Flags: Nowait postinstall skipifsilent; Check: IsJREInstalled

[Code]
#define MinJRE "1.6"
#define WebJRE "http://www.oracle.com/technetwork/java/javase/downloads/jre6downloads-1902815.html"

function IsJREInstalled: Boolean;
var
  Jreversion: string;
begin
  // read JRE version
  Result := RegQueryStringValue(HKLM32,Jreversion);
  // if the prevIoUs reading Failed and we're on 64-bit Windows,try to read 
  // the JRE version from WOW node
  if not Result and IsWin64 then
    Result := RegQueryStringValue(HKLM64,Jreversion);
  // if the JRE version was read,check if it's at least the minimum one
  if Result then
    Result := CompareStr(Jreversion,'{#MinJRE}') >= 0;
end;

function InitializeSetup: Boolean;
var
  ErrorCode: Integer;
begin
  Result := True;
  // check if JRE is installed; if not,then...
  if not IsJREInstalled then
  begin
    // show a message Box and let user to choose if they want to download JRE;
    // if so,go to its download site and exit setup; continue otherwise
    if MsgBox('Java is required. Do you want to download it Now ?',MB_YESNO) = IDYES then
    begin
      Result := False;
      ShellExec('','{#WebJRE}',ErrorCode);
    end;
  end;
end;