分析 Tomcat setclasspath.bat 脚本

迷南。 2021-06-24 15:56 333阅读 0赞

在  catalina.bat 中 调用 ，

rem Get standard Java environment variables  
if exist "%CATALINA\_HOME%\\bin\\setclasspath.bat" goto okSetclasspath  
echo Cannot find "%CATALINA\_HOME%\\bin\\setclasspath.bat"  
echo This file is needed to run this program  
goto end  
:okSetclasspath  
call "%CATALINA\_HOME%\\bin\\setclasspath.bat" %1  
if errorlevel 1 goto end

设置 tomcat 启动前 需要获取的环境变量

@echo off  
rem Licensed to the Apache Software Foundation (ASF) under one or more  
rem contributor license agreements.  See the NOTICE file distributed with  
rem this work for additional information regarding copyright ownership.  
rem The ASF licenses this file to You under the Apache License, Version 2.0  
rem (the "License"); you may not use this file except in compliance with  
rem the License.  You may obtain a copy of the License at  
rem  
rem     http://www.apache.org/licenses/LICENSE-2.0  
rem  
rem Unless required by applicable law or agreed to in writing, software  
rem distributed under the License is distributed on an "AS IS" BASIS,  
rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  
rem See the License for the specific language governing permissions and  
rem limitations under the License.  
  
  
rem ---------------------------------------------------------------------------  
rem Set JAVA\_HOME or JRE\_HOME if not already set, ensure any provided settings  
rem are valid and consistent with the selected start-up options and set up the  
rem endorsed directory.  
rem ---------------------------------------------------------------------------  
  
  
rem Make sure prerequisite environment variables are set  
  
  
rem In debug mode we need a real JDK (JAVA\_HOME)  
if ""%1"" == ""debug"" goto needJavaHome  
  
  
rem Otherwise either JRE or JDK are fine  
if not "%JRE\_HOME%" == "" goto gotJreHome  
if not "%JAVA\_HOME%" == "" goto gotJavaHome  
echo Neither the JAVA\_HOME nor the JRE\_HOME environment variable is defined  
echo At least one of these environment variable is needed to run this program  
goto exit  
  
  
:needJavaHome  
rem Check if we have a usable JDK  
if "%JAVA\_HOME%" == "" goto noJavaHome  
if not exist "%JAVA\_HOME%\\bin\\java.exe" goto noJavaHome  
if not exist "%JAVA\_HOME%\\bin\\javaw.exe" goto noJavaHome  
if not exist "%JAVA\_HOME%\\bin\\jdb.exe" goto noJavaHome  
if not exist "%JAVA\_HOME%\\bin\\javac.exe" goto noJavaHome  
set "JRE\_HOME=%JAVA\_HOME%"  
goto okJava  
  
  
:noJavaHome  
echo The JAVA\_HOME environment variable is not defined correctly.  
echo It is needed to run this program in debug mode.  
echo NB: JAVA\_HOME should point to a JDK not a JRE.  
goto exit  
  
  
:gotJavaHome  
rem No JRE given, use JAVA\_HOME as JRE\_HOME  
set "JRE\_HOME=%JAVA\_HOME%"  
  
  
:gotJreHome  
rem Check if we have a usable JRE  
if not exist "%JRE\_HOME%\\bin\\java.exe" goto noJreHome  
if not exist "%JRE\_HOME%\\bin\\javaw.exe" goto noJreHome  
goto okJava  
  
  
:noJreHome  
rem Needed at least a JRE  
echo The JRE\_HOME environment variable is not defined correctly  
echo This environment variable is needed to run this program  
goto exit  
  
  
:okJava  
rem Don't override the endorsed dir if the user has set it previously  
if not "%JAVA\_ENDORSED\_DIRS%" == "" goto gotEndorseddir  
rem Set the default -Djava.endorsed.dirs argument  
set "JAVA\_ENDORSED\_DIRS=%CATALINA\_HOME%\\endorsed"  
:gotEndorseddir  
  
  
rem Don't override \_RUNJAVA if the user has set it previously  
if not "%\_RUNJAVA%" == "" goto gotRunJava  
rem Set standard command for invoking Java.  
rem Also note the quoting as JRE\_HOME may contain spaces.  
set \_RUNJAVA="%JRE\_HOME%\\bin\\java.exe"  
:gotRunJava  
  
  
rem Don't override \_RUNJDB if the user has set it previously  
rem Also note the quoting as JAVA\_HOME may contain spaces.  
if not "%\_RUNJDB%" == "" goto gotRunJdb  
set \_RUNJDB="%JAVA\_HOME%\\bin\\jdb.exe"  
:gotRunJdb  
  
  
goto end  
  
  
:exit  
exit /b 1  
  
  
:end  
exit /b 0