I want to install Java using an NSIS script, but i have to know whether Java is installed or not in the system (Windows). based on the register keys how can we check if Java is installed or not?
Can anybody provide an NSI开发者_如何学编程S script to check Java installation based on registery keys?
I didn't compile it, but I would try following. I chose registry key based on How can I detect the installed Sun JRE on Windows?.
;--------------------------------
;Defines
!define JavaRegKey 'HKLM "Software\JavaSoft\Java Runtime Environment" ""'
;--------------------------------
;Installer Sections
Section 'Java Runtime' SecJava
SetOutPath '$TEMP'
SetOverwrite on
File 'c:\<yourdir>\javasetup.exe'
ExecWait '$TEMP\javasetup.exe' $0
DetailPrint '..Java Runtime Setup exit code = $0'
Delete '$TEMP\javasetup.exe'
SectionEnd
;--------------------------------
; Functions
Function .onInit
ReadRegStr $R0 ${JavaRegKey}
StrCmp $R0 "" JavaMissing JavaFound
JavaFound:
!insertmacro UnselectSection ${SecJava}
Goto JavaCheckDone
JavaMissing:
!insertmacro SelectSection ${SecJava}
JavaCheckDone:
FunctionEnd
The following fragment of code checks if Java is installed (jre or jdk).
If Java is not installed, it will install it.
The script also saves the path to Java in a variable $JavaInstallationPath
.
Var JavaInstallationPath
Section "Find Java" FINDJAVA
DetectTry1:
StrCpy $1 "SOFTWARE\JavaSoft\Java Runtime Environment"
StrCpy $2 0
ReadRegStr $2 HKLM "$1" "CurrentVersion"
StrCmp $2 "" DetectTry2 JRE
JRE:
ReadRegStr $5 HKLM "$1\$2" "JavaHome"
StrCmp $5 "" DetectTry2 GetValue
DetectTry2:
ReadRegStr $2 HKLM "SOFTWARE\JavaSoft\Java Development Kit" "CurrentVersion"
StrCmp $2 "" NoJava JDK
JDK:
ReadRegStr $5 HKLM "SOFTWARE\JavaSoft\Java Development Kit\$2" "JavaHome"
StrCmp $5 "" NoJava GetValue
GetValue:
StrCpy $JavaInstallationPath $5
Messagebox MB_OK "Javahome value: $JavaInstallationPath"
Goto done
NoJava:
Messagebox MB_OK "No Java installation detected. Installing Java."
# Install Java
ExecWait "$INSTDIR\java\jre-6u26-windows-i586.exe"
Goto DetectTry1
done:
#$JavaInstallationPath should contain the system path to Java
SectionEnd
I think you can also put the above code in a function and call it wherever you like in your NSIS script.
Another example with online jre installer and 64/32 bit check
java min version
!define JRE_VERSION_6 "1.5"
check function
Function DetectJRE
;64bit jre und jdk check
SetRegView 64
ReadRegStr $2 HKLM "SOFTWARE\JavaSoft\Java Runtime Environment" \
"CurrentVersion"
;StrCmp $2 ${JRE_VERSION_6} done
${VersionCompare} $2 ${JRE_VERSION_6} $R0
StrCmp $R0 "1" done
ReadRegStr $2 HKLM "SOFTWARE\JavaSoft\Java Development Kit" \
"CurrentVersion"
;StrCmp $2 ${JRE_VERSION_6} done
${VersionCompare} $2 ${JRE_VERSION_6} $R0
StrCmp $R0 "1" done
;32bit jre und jdk check
SetRegView 32
ReadRegStr $2 HKLM "SOFTWARE\JavaSoft\Java Runtime Environment" \
"CurrentVersion"
;StrCmp $2 ${JRE_VERSION_6} done
${VersionCompare} $2 ${JRE_VERSION_6} $R0
StrCmp $R0 "1" done
ReadRegStr $2 HKLM "SOFTWARE\JavaSoft\Java Development Kit" \
"CurrentVersion"
;StrCmp $2 ${JRE_VERSION_6} done
${VersionCompare} $2 ${JRE_VERSION_6} $R0
StrCmp $R0 "1" done
Call GetJRE
done:
FunctionEnd
version compare
Function VersionCompare
!define VersionCompare `!insertmacro VersionCompareCall`
!macro VersionCompareCall _VER1 _VER2 _RESULT
Push `${_VER1}`
Push `${_VER2}`
Call VersionCompare
Pop ${_RESULT}
!macroend
Exch $1
Exch
Exch $0
Exch
Push $2
Push $3
Push $4
Push $5
Push $6
Push $7
begin:
StrCpy $2 -1
IntOp $2 $2 + 1
StrCpy $3 $0 1 $2
StrCmp $3 '' +2
StrCmp $3 '.' 0 -3
StrCpy $4 $0 $2
IntOp $2 $2 + 1
StrCpy $0 $0 '' $2
StrCpy $2 -1
IntOp $2 $2 + 1
StrCpy $3 $1 1 $2
StrCmp $3 '' +2
StrCmp $3 '.' 0 -3
StrCpy $5 $1 $2
IntOp $2 $2 + 1
StrCpy $1 $1 '' $2
StrCmp $4$5 '' equal
StrCpy $6 -1
IntOp $6 $6 + 1
StrCpy $3 $4 1 $6
StrCmp $3 '0' -2
StrCmp $3 '' 0 +2
StrCpy $4 0
StrCpy $7 -1
IntOp $7 $7 + 1
StrCpy $3 $5 1 $7
StrCmp $3 '0' -2
StrCmp $3 '' 0 +2
StrCpy $5 0
StrCmp $4 0 0 +2
StrCmp $5 0 begin newer2
StrCmp $5 0 newer1
IntCmp $6 $7 0 newer1 newer2
StrCpy $4 '1$4'
StrCpy $5 '1$5'
IntCmp $4 $5 begin newer2 newer1
equal:
StrCpy $0 0
goto end
newer1:
StrCpy $0 1
goto end
newer2:
StrCpy $0 2
end:
Pop $7
Pop $6
Pop $5
Pop $4
Pop $3
Pop $2
Pop $1
Exch $0
FunctionEnd
getJre
Function GetJRE
MessageBox MB_YESNO "XXXXXX require at least Java 1.5! Do you want to download and install it now?" IDYES doInstall
Abort
doInstall:
StrCpy $2 "$TEMP\Java Runtime Environment.exe"
nsisdl::download /TIMEOUT=30000 ${JRE_URL} $2
Pop $R0 ;Get the return value
StrCmp $R0 "success" +3
MessageBox MB_OK "Download failed: $R0"
Quit
ExecWait $2
Delete $2
Call DetectJRE
FunctionEnd
if theire is something missing you will find it at nsis-wiki page
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