在Windows 7问题上启动服务Tomcat8：“创建java失败”

Question

Start tomcat8 as a service on a windows seven computer for development purpose can be really... annoying.

I had this error :

    Failed creating java C:\Program Files (x86)\Java\jdk1.8.0_40\jre\bin\server\jvm.dll

And i saw in :

    C:\Program Files (x86)\Java\jdk1.8.0_40\bin

That the msvcr100.dll wasn't the same file i had in windows/system32 folder. In fact in my windows/System32 folder i had the msvcr100.dll that correspond to the x64 version. Tomcat service won't start and told me that it is not a valid 32 bit version.

What i did to solve this was to install jdk1.8.0_40 in C:\\Program Files And looking in tomcat8w.exe the path in java tab named Java virtual Machine, i set this field to :

C:\Program Files\Java\jdk1.8.0_40\jre\bin\server\mvcr100.dll

Now, for the service Tomcat8, it will be use the x64 dll, and all work correctly.

My Question is, could i replace the msvcr100.dll safely in windows\\system32 by the x86 version ? Or my solution is good ?

Answer 1

Replacing lib it is not very good solution, because there are no any guarantees that it will work correctly with other programas. I propose just download new version of this lib in separate directory and try link it to Tomcat.

Furthermore, looks like it is known issue:

This is usually happen because of missing msvcr71.dll file. However tomcat doesn't use msvcr71.dll directly, it's used by the Java Virtual Machine (JVM).

Solution:

1) Copy msvcr71.dll from java's bin directory to tomcat's bin folder.

2) Add java's bin directory to windows environment variable.

3) Copy msvcr71.dll from java's bin directory to windows\\system32 folder.

4) Make sure your tomcat's pointing to correct jvm.dll folder.