[英]64-bit Java Apps: Is a 64-bit OS, 64-bit JRE and 64-bit Application required?
[英]Not able to Check installed Java version in Win-10 through NSIS installer for JAVA -8 , 64-bit and above
安装程序适用于 Win-7、Win-8,但适用于 Win-10。 我的 Java 版本检查功能是 -
Function checkJavaVersion
${If} ${RunningX64}
${registry::Read} "HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environmen" "JAVA_HOME" $0 $1
MessageBox MB_OK "64 bit JAVA Home - $0"
MessageBox MB_OK "64 bit JAVA Home - $1"
${registry::Read} "HKLM\SOFTWARE\JavaSoft\Java Runtime Environment" "CurrentVersion" $0 $1
MessageBox MB_OK "64 bit JRE - $0"
MessageBox MB_OK "64 bit JRE - $1"
${If} $0 == ""
${registry::Read} "HKLM\SOFTWARE\JavaSoft\Java Development Kit" "CurrentVersion" $0 $1
MessageBox MB_OK "64 bit JDK - $0"
MessageBox MB_OK "64 bit JDK - $1"
${EndIf}
${registry::Read} "HKLM\SOFTWARE\WOW6432Node\JavaSoft\Java Runtime Environment" "CurrentVersion" $0 $1
MessageBox MB_OK "32 bit JRE - $0"
MessageBox MB_OK "32 bit JRE - $1"
${If} $0 == ""
${registry::Read} "HKLM\SOFTWARE\WOW6432Node\JavaSoft\Java Development Kit" "CurrentVersion" $0 $1
MessageBox MB_OK "32 bit JDK - $0"
MessageBox MB_OK "32 bit JDK - $1"
${EndIf}
${Else}
${registry::Read} "HKLM\SOFTWARE\JavaSoft\Java Runtime Environment" "CurrentVersion" $0 $1
MessageBox MB_OK "32 bit JRE - $0"
MessageBox MB_OK "32 bit JRE - $1"
${EndIf}
FunctionEnd
在不同系统中运行此示例安装程序后,我发现对于安装了 Java 8(64 位)的 Win-10(64 位系统),它无法识别 JAVA 版本,甚至在提升模式下也无法识别。
同样对于安装了 JAVA 8(32 位)的 Win-10(64 位系统) HKLM\\SOFTWARE\\JavaSoft\\Java Runtime Environment
此路径将注册表搜索重定向到HKLM\\SOFTWARE\\WOW6432Node\\JavaSoft\\Java Runtime Environment
所以在两者中情况(32 位和 64 位 Java 版本检查)即使在 Elevated 模式下也能找到 Java 版本,这行为相同,
请查找附件结果以获得更详细的结果。
为了更清楚,可以参考这个未解决的问题NSIS 安装程序问题。
您的 64 位检测代码没有意义,NSIS 在 32 位安装程序中默认为 32 位注册表视图。 WOW6432Node
是一个保留名称,如果可能,您不应该真正使用它。 提升安装程序不会改变注册表重定向的工作方式。
它应该看起来像这样:
${If} ${RunningX64}
SetRegView 64
${registry::Read} ... $0 $1
...
${EndIf}
SetRegView 32
${If} $0 == ""
${registry::Read} ... $0 $1
...
${EndIf}
根据您链接到的页面,Java v9 更改了注册表路径和名称,因此您也需要更新代码以处理这些内容。
我通过使用解决了这个问题:
SetRegView 64
因此,用于检查的函数如下所示:
Function LocateJVM
;Check for Java version and location
Push $0
Push $1
ReadRegStr $JAVA_VER HKLM "SOFTWARE\JavaSoft\Java Runtime Environment" CurrentVersion
StrCmp "" "$JAVA_VER" Check64Bit CheckJavaVer
Check64Bit:
SetRegView 64
ReadRegStr $JAVA_VER HKLM "SOFTWARE\JavaSoft\Java Runtime Environment" CurrentVersion
StrCmp "" "$JAVA_VER" JavaNotPresent CheckJavaVer
JavaNotPresent:
StrCpy $JAVA_INSTALLATION_MSG "Java Runtime Environment nije instalirana na Vašem računaru. Da bi ste pokrenuli ovaj program potrebno je da instalirate Java 1.7 ili noviju."
Pop $1
Pop $0
;MessageBox MB_OK "Molim instalirajte Javu 1.7 ili noviju."
CheckJavaVer:
ReadRegStr $0 HKLM "SOFTWARE\JavaSoft\Java Runtime Environment\$JAVA_VER" JavaHome
GetFullPathName /SHORT $JAVA_HOME "$0"
StrCpy $0 $JAVA_VER 1 0
StrCpy $1 $JAVA_VER 1 2
StrCpy $JAVA_VER "$0$1"
IntCmp 17 $JAVA_VER FoundCorrectJavaVer FoundCorrectJavaVer JavaVerNotCorrect
FoundCorrectJavaVer:
IfFileExists "$JAVA_HOME\bin\javaw.exe" 0 JavaNotPresent
;MessageBox MB_OK "Found Java: $JAVA_VER at $JAVA_HOME"
Goto Done
JavaVerNotCorrect:
;MessageBox MB_OK "Molim instalirajte Javu 1.7 ili noviju."
StrCpy $JAVA_INSTALLATION_MSG "Verzija Java Runtime Environment instalirana na Vašem računaru je $JAVA_VER. Da bi ste pokrenuli ovaj program potrebno je da instalirate Java 1.7 ili noviju."
Done:
Pop $1
Pop $0
FunctionEnd
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