无法通过适用于Java -8、64位及更高版本的NSIS安装程序检查Win-10中已安装的JAVA版本

Question

该安装程序在Win-7、Win-8上运行良好，但在Win-10上运行得很奇怪。我的Java版本检查函数是-

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

在不同的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Java8 (32位)的Win-10( 64位系统) HKLM\SOFTWARE\JavaSoft\Java Runtime Environment，该路径将注册表搜索重定向到HKLM\SOFTWARE\WOW6432Node\JavaSoft\Java Runtime Environment，因此在两种情况下(32位和64位JAVA版本检查)即使在提升模式中也能找到Java版本这表现相同，

有关更详细的结果，请参阅附件。

​

为了更清楚起见，可以参考这个开放问题NSIS installer issue。

Answer 1

您的64位检测代码没有意义，在32位安装程序中，NSIS默认为32位注册表视图。WOW6432Node是一个reserved name，如果可能的话，你不应该真的使用它。提升安装程序不会更改注册表重定向的工作方式。

它可能看起来像这样：

${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，因此您需要更新代码来处理这些内容。

Answer 2

我通过使用以下命令解决了这个问题：

SetRegView 64

所以用于检查函数如下所示：

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