NSIS – detect problems with Java installations on x64 systems

I have an NSIS installer. At some point, I must check whether Java is installed in the system. If not, it must install it silently It must also return the path to Java because I have to create Java_ Home environment variable

This is the function I wrote to check the Java installation and save the Java path in the variable:

Var JavaInstallationPath
Function FindJava 
    Strcpy $1 "SOFTWARE\JavaSoft\Java Runtime Environment"  
    Strcpy $2 0  
    ReadRegStr $2 HKLM "$1" "CurrentVersion"  
    ${If} $2 == ""
        Goto DetectTry2
    ${Else}
        ReadRegStr $5 HKLM "$1\$2" "JavaHome"  
        ${If} $5 == ""
            Goto DetectTry2
        ${Else}
            Strcpy $JavaInstallationPath $5
            Message@R_721_2419@ MB_OK "Javahome value: $JavaInstallationPath"
        ${EndIf}
    ${EndIf}

DetectTry2:  
     ReadRegStr $2 HKLM "SOFTWARE\JavaSoft\Java Development Kit" "CurrentVersion"  
     ${If} $2 == ""
        Goto NoJava
    ${Else}
        ReadRegStr $5 HKLM "SOFTWARE\JavaSoft\Java Development Kit\$2" "JavaHome"  
        ${If} $5 == ""
            Goto NoJava
        ${Else}
             Strcpy $JavaInstallationPath $5
             Message@R_721_2419@ MB_OK "Javahome value: $JavaInstallationPath"
        ${EndIf}
     ${EndIf}

NoJava:  
    Message@R_721_2419@ MB_OK "No Java installation detected. Installing Java."
     # Install Java 
    Message@R_721_2419@ MB_OK "Running x32" 
    ExecWait "$INSTDIR\temp\jre-6u26-windows-i586.exe"    
    # get jre path value after installation
    Strcpy $1 "SOFTWARE\JavaSoft\Java Runtime Environment"  
    Strcpy $2 0         
    ReadRegStr $2 HKLM "$1" "CurrentVersion"            
    ReadRegStr $5 HKLM "$1\$2" "JavaHome"           
    Strcpy $JavaInstallationPath $5     
    Message@R_721_2419@ MB_OK "Java installation path: $JavaInstallationPath"    
FunctionEnd

Later in the installer, I installed a service that runs Ruby scripts:

nsExec::ExecToLog 'jruby "$INSTDIR\Application\install\install_service.rb"'

(. RB file will not cause problems, because I tried to hard code the Java path, and everything is normal)

However, everything applies to 32 - bit operating systems However, when I run setup on a 64 bit system, the service will fail to start with error 1067

At first, I thought the findjava function didn't work properly and led to the installation error of the service, but I sent all the results to the message box, and they were exactly what I expected

Unfortunately, the problem is actually this function I deleted this function, I have hard coded $Java installationpath, and the installer works normally

I really don't know what's wrong Please help.

Solution

Windows exit code 1067 refers to "unexpected termination of the process" see http://www.chicagotech.net/troubleshooting/exitcode2.htm

I try to check if there is any problem running jruby on Windows 64 bit, and there is! Check this link:

http://hype-free.blogspot.com/2011/09/running-jruby-on-64-bit-windows.html

But I think if jruby Jar depends on the currently installed Java runtime to run it, but without the Java runtime installed, it may not run at all