inno-setup - 需要有关 Inno Setup 脚本的帮助 - 检查 jre 安装的问题

Question

我正在使用以下脚本安装 Java 程序。我面临着这个脚本的两个问题。
如果您知道解决这些问题的方法，请告诉我。我真的很感谢你的时间

JRE 检查发生 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

我正在检查以下 Windows 注册表项以检查 JRE，但此脚本不适用于所有情况。我的意思是有时这是有效的，有时在 64 位 JRE 安装时会失败。我正在寻找一种逻辑来检查所有场景的注册表(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.

Answer 1

为什么 InitializeSetup 函数在用作 Check 函数时会被多次调用？

您正在使用 InitializeSetup事件方法作为 Check函数，是什么导致此方法被多次调用。第一次初始化设置时(作为真实事件方法)和下一次 Check确定，文件条目是否来自 [Run]部分应该打开。

基本上，使用事件方法 Check功能不对。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。在您的情况下，而是创建一个函数来检查是否安装了 JRE 并为您的 Check 使用这样的函数.

如何获取 Java SE 运行时环境版本？

您不需要将设置作为 64 位运行。您可以简单地从 WOW 注册表节点读取以获取 64 位 Windows 上的 64 位 JRE 版本。我会尝试使用这样的东西:

[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, 'Software\JavaSoft\Java Runtime Environment',
    'CurrentVersion', 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, 'Software\JavaSoft\Java Runtime Environment',
      'CurrentVersion', 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 ?',
      mbConfirmation, MB_YESNO) = IDYES then
    begin
      Result := False;
      ShellExec('', '{#WebJRE}', '', '', SW_SHOWNORMAL, ewNoWait, ErrorCode);
    end;
  end;
end;