@echo off
setlocal enabledelayedexpansion
set "regPath=HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Apache Software Foundation\Procrun 2.0\xxxx_Tomcat7\Parameters\Java"

set "append=\0-XX:+UseConcMarkSweepGC\0-XX:+UseParNewGC\0-XX:NewRatio=1\0-XX:+PrintGCDetails\0-XX:+PrintGCDateStamps\0-XX:+HeapDumpOnOutOfMemoryError"


for /f "delims=" %%A in ('reg query "%regPath%" /v Options') do (
    set "line=%%A"
)
echo "注册表原值："%line%
echo.

rem 截取字符串
set "substring=!line:*REG_MULTI_SZ    =!"
echo "截取Data："%substring%
echo.

rem 不包含UseConcMarkSweepGC，则拼接新参数
if not "!substring!"=="!substring:UseConcMarkSweepGC=!" (
    echo 已经包含UseConcMarkSweepGC，本次不操作
) else (
    set "result=!substring!%append%"
    echo "新Data："!result!
    reg add "HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Apache Software Foundation\Procrun 2.0\xxxx_Tomcat7\Parameters\Java" /v Options /t REG_MULTI_SZ /d "!result!" /f
    echo "已添加UseConcMarkSweepGC参数"
)
pause