解決安裝tomcat時(shí)出現(xiàn)的問(wèn)題

更新時(shí)間：2024年02月19日 16:43:13 作者：qq_36443319

這篇文章主要介紹了解決安裝tomcat時(shí)出現(xiàn)的問(wèn)題,具有很好的參考價(jià)值,希望對(duì)大家有所幫助,如有錯(cuò)誤或未考慮完全的地方,望不吝賜教

找出問(wèn)題的原因

右鍵編輯打開(kāi)“startup.bat"文件，然后找文件的最后一行代碼是:end 在:end的后面輸入pause

如下圖所示：

接下來(lái)在DOS命令窗口運(yùn)行startup.bat

此時(shí)提示報(bào)錯(cuò)信息如下：

the JRE_HOME environment variable is not defined correctly This environment variabl

原因知道了，下面來(lái)看解決辦法

1、分析startup.bat啟動(dòng)腳本：發(fā)現(xiàn)其調(diào)用了catalina.bat,而catalina.bat調(diào)用了setclasspath.bat

2、在setclasspath.bat的頭部定義了JAVA_HOME和JRE_HOME的值，那么這里需要我們手動(dòng)設(shè)置JAVA_HOME變量和JRE_HOME變量（紅色代碼為新添加

注意：你所設(shè)置的變量要和自己的電腦中”環(huán)境變量“里的JAVA_HOME和JRE_HOME保持一致，我的是紅色的代碼。

第一還是配錯(cuò)了路徑，是應(yīng)為環(huán)境變量中JRE_HOME的問(wèn)題。

錯(cuò)把jre的絕對(duì)路徑放在JAVA_HOME中了。

把JAVA_HOME中的jre的絕對(duì)路徑刪除掉。

重新建一個(gè)JRE_HOME，并且加入jre的絕對(duì)路徑。

改完后就如下：

@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 ---------------------------------------------------------------------------

set JAVA_HOME=D:\D:\tomcat\apache-tomcat-8.5.43

set JRE_HOME= C:\Program Files\Java\jre-9.0.4

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