如何从Inno Setup安装JRE？

Question

我正在尝试通过Inno Setup(以及其他应用程序)安装最新的平台(x64或x86)相应的Java Runtime Environment.我找到了一些脚本示例,说明如何检测版本并安装如果正确并根据我的需要调整它们但我仍然遇到这样:

无法打开文件"path\to\JREInstall.exe":
CreateProcess失败:代码5:
访问被拒绝

这是严格负责安装JRE的代码:

[Setup]
AppName="JRE Setup"
AppVersion=0.1
DefaultDirName="JRE Setup"

[Languages]
Name: "english"; MessagesFile: "compiler:Default.isl"

[Files]
Source: "jre-8u11-windows-x64.exe"; DestDir: "{tmp}\JREInstall.exe"; \
    Check: IsWin64 AND InstallJava();
Source: "jre-8u11-windows-i586.exe"; DestDir: "{tmp}\JREInstall.exe"; \
    Check: (NOT IsWin64) AND InstallJava();

[Run]
Filename: "{tmp}\JREInstall.exe"; Parameters: "/s"; \
    Flags: nowait postinstall runhidden runascurrentuser; Check: InstallJava()

[Code]

procedure DecodeVersion(verstr: String; var verint: array of Integer);
var
  i,p: Integer; s: string;
begin
  { initialize array }
  verint := [0,0,0,0];
  i := 0;
  while ((Length(verstr) > 0) and (i < 4)) do
  begin
    p := pos ('.', verstr);
    if p > 0 then
    begin
      if p = 1 then s:= '0' else s:= Copy (verstr, 1, p - 1);
      verint[i] := StrToInt(s);
      i := i + 1;
      verstr := Copy (verstr, p+1, Length(verstr));
    end
    else
    begin
      verint[i] := StrToInt (verstr);
      verstr := '';
    end;
  end;
end;

function CompareVersion (ver1, ver2: String) : Integer;
var
  verint1, verint2: array of Integer;
  i: integer;
begin
  SetArrayLength (verint1, 4);
  DecodeVersion (ver1, verint1);

  SetArrayLength (verint2, 4);
  DecodeVersion (ver2, verint2);

  Result := 0; i := 0;
  while ((Result = 0) and ( i < 4 )) do
  begin
    if verint1[i] > verint2[i] then
      Result := 1
    else
      if verint1[i] < verint2[i] then
        Result := -1
      else
        Result := 0;
    i := i + 1;
  end;
end;

function InstallJava() : Boolean;
var
  ErrCode: Integer;
  JVer: String;
  InstallJ: Boolean;
begin
  RegQueryStringValue(
    HKLM, 'SOFTWARE\JavaSoft\Java Runtime Environment', 'CurrentVersion', JVer);
  InstallJ := true;
  if Length( JVer ) > 0 then
  begin
    if CompareVersion(JVer, '1.8') >= 0 then
    begin
      InstallJ := false;
    end;
  end;
  Result := InstallJ;
end;

在完整的安装脚本中,相同的消息继续出现.如何从此脚本安装文件中运行JRE安装程序？

Answer 1

我能够弄明白这个问题:显然我在使用这些线时错了:

Source: "jre-8u11-windows-x64.exe"; DestDir: "{tmp}\JREInstall.exe"; Check: IsWin64 AND InstallJava();
Source: "jre-8u11-windows-i586.exe"; DestDir: "{tmp}\JREInstall.exe"; Check: (NOT IsWin64) AND InstallJava();

它们应该像这样存在:

Source: "jre-8u11-windows-x64.exe"; DestDir: "{tmp}"; DestName: "JREInstall.exe"; Check: IsWin64 AND InstallJava();
Source: "jre-8u11-windows-i586.exe"; DestDir: "{tmp}"; DestName: "JREInstall.exe"; Check: (NOT IsWin64) AND InstallJava();

这似乎解决了这个问题.

这条线我错了:

Filename: "{tmp}\JREInstall.exe"; Parameters: "/s"; Flags: nowait postinstall runhidden runascurrentuser; Check: InstallJava()

应该是:

Filename: "{tmp}\JREInstall.exe"; Parameters: "/s"; Flags: nowait runhidden runascurrentuser; Check: InstallJava()

这是我使用这种特殊工具的有限经验的最佳解决方案.当我有机会时,我会查看PrepareToInstall选项,但现在可以使用.