如何使用一个注册表项的值到另一个 [英] How to use value of one registry entry into another

问题描述

我的一个Windows服务使用java.exe来运行。 java在我的C盘中的路径存储在注册表项中。 Java在更新发生时不断更新其修订版，并且不断删除旧文件夹并创建新文件夹。这条新路径需要在我的注册表项中更新，否则我的Windows服务会停止。

我能想到的一个解决方案是使用指向java路径的注册表项作为我的注册表项中的值，这样我的reg条目就没有硬编码的java路径。



基本上我想使用此注册表项中的值（即C：\Program Files（x86）\ Java \ _jre1.8.0_131 \ bin \\ \\ javaava。 exe）



HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\windows\CurrentVersion\App Paths\javaws.exe



在其他注册表项中：HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Services \ EngineWithJenkins \Parameters @ Path



我是什么尝试过：



我使用过这两种方法却失败了：



$ （注册表：HKEY_LOCAL_MACHINE \ SOFTWARE \ Mysoftoft \windows \ CurrentVersion\App Paths\javaws.exe@Path）



并直接路径



HKEY_LOCAL_MA CHINE\SOFTWARE\Microsoft\windows\CurrentVersion\App Paths\javaws.exe\Path

One of my windows service uses the java.exe to run. The path where java lies in my C drive is stored in a registry entry. Java keeps updating its revision when updates happens and it keeps deleting the old folder and creates a new one. This new path needs to be updated in my registry entry other wise my windows service stops.
One solution I can think is use the registry entry that points to java path as a value in my registry entry, so that my reg entry does not have a hard coded java path.

Basically I want to use the value at this registry entry(which is C:\Program Files (x86)\Java\jre1.8.0_131\bin\javaws.exe)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\windows\CurrentVersion\App Paths\javaws.exe

in other registry entry : HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\EngineWithJenkins\Parameters@Path

What I have tried:

I have used these two methods but they failed:

$(Registry:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\windows\CurrentVersion\App Paths\javaws.exe@Path)

and directly the path

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\windows\CurrentVersion\App Paths\javaws.exe\Path

推荐答案

（注册表：HKEY_LOCAL_MACHINE \ SOFTWARE \\ \\ Microsoft /\\windows \ CurrentVersion\App Paths \ javaHavaws.exe@Path）



直接路径



HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\windows\CurrentVersion\App Paths\javaws.exe\Path

(Registry:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\windows\CurrentVersion\App Paths\javaws.exe@Path)

and directly the path

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\windows\CurrentVersion\App Paths\javaws.exe\Path

您必须使用的注册表项Java安装，而不是这些值。提示：您还可以使用 EnumRegistry



另一种解决方案是使用 用FindFirstFile。请参阅示例代码。

You must use the registry entries of the Java installaion, not these values. Tip: You can also use EnumRegistry

Another solution is to find the javaws.exe in the program files folder of the disk with FindFirstFile. See the example code.

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