\bin\logstash.bat文件中，

SETLOCAL的後面，CALL "%SCRIPT_DIR%\setup.bat" 的前面增加一行：

@echo off

SETLOCAL

set SCRIPT_DIR=%~dp0
set JAVA_HOME=C:\Program Files\Java\jdk1.8.0_40
CALL "%SCRIPT_DIR%\setup.bat"

:EXEC
REM is the first argument a flag? If so, assume ‘agent‘
set first_arg=%1
setlocal EnableDelayedExpansion
 
if "!first_arg:~0,1!" equ "-" (
  if "%VENDORED_JRUBY%" == "" (
    %RUBYCMD% "%LS_HOME%\lib\bootstrap\environment.rb" "logstash\runner.rb" %*
  ) else (
    %JRUBY_BIN% %jruby_opts% "%LS_HOME%\lib\bootstrap\environment.rb" "logstash\runner.rb" %*
  )
) else (
  if "%VENDORED_JRUBY%" == "" (
    
 
%RUBYCMD% "%LS_HOME%\lib\bootstrap\environment.rb" "logstash\runner.rb" %*
  ) else (
    %JRUBY_BIN% %jruby_opts% "%LS_HOME%\lib\bootstrap\environment.rb" "logstash\runner.rb" %*
  )
)

ENDLOCAL

elk-logstash: window下指定jdk目錄