Linux系统

  if [ ! -z "$JAVA_HOME" ]; then
  JAVA="$JAVA_HOME/bin/java"
  JAVA_TYPE="JAVA_HOME"
  else
  if [ "$(uname -s)" = "Darwin" ]; then
  # macOS has a different structure
  JAVA="$ES_HOME/jdk.app/Contents/Home/bin/java"
  else
    JAVA="$ES_HOME/jdk/bin/java"
  fi
    JAVA_TYPE="bundled jdk"
   fi

修改为

  if [ "$(uname -s)" = "Darwin" ]; then
    # macOS has a different structure
    JAVA="$ES_HOME/jdk.app/Contents/Home/bin/java"
  else
    JAVA="$ES_HOME/jdk/bin/java"
  fi
  JAVA_TYPE="bundled jdk"

Windows环境

  if defined ES_JAVA_HOME (
   set JAVA="%ES_JAVA_HOME%\bin\java.exe"
   set JAVA_TYPE=ES_JAVA_HOME
 ) else if defined JAVA_HOME (
   rem fallback to JAVA_HOME
   echo "warning: usage of JAVA_HOME is deprecated, use ES_JAVA_HOME" >&2
   set JAVA="%JAVA_HOME%\bin\java.exe"
   set "ES_JAVA_HOME=%JAVA_HOME%"
   set JAVA_TYPE=JAVA_HOME
 ) else (
   rem use the bundled JDK (default)
   set JAVA="%ES_HOME%\jdk\bin\java.exe"
   set "ES_JAVA_HOME=%ES_HOME%\jdk"
   set JAVA_TYPE=bundled JDK
 )

修改为

set JAVA="%ES_HOME%\jdk\bin\java.exe" 
set JAVA_HOME="%ES_HOME%\jdk"