Windows下使用批处理配置Java环境变量

直接贴代码

@echo off
chcp 65001
    rem --- Base Config ---
    :init 
    set JAVA_HOME_1_8=C:\Program Files\Java\jdk1.8.0_131
    set JAVA_HOME_1_7=C:\Program Files\Java\jdk1.7.0_25
    set JAVA_HOME_1_6=C:\Program Files\Java\jdk1.6.0_43
    
    :start 
    echo JDK 版本: 
    java -version 
    ping 127.0.0.1 -n 2 -w 1000 > nul 
    echo. 
    echo ============================================= 
    echo jdk版本列表 
    echo 1.8 
    echo 1.7 
    echo 1.6 
    echo ============================================= 
    
    :select
    set /p opt=请选择jdk版本： 
    if %opt%==1.8 (
     set TARGET_JAVA_HOME=%JAVA_HOME_1_8%
    )
    if %opt%==1.7 (
     set TARGET_JAVA_HOME=%JAVA_HOME_1_7%
    )
    if %opt%==1.6 (
     set TARGET_JAVA_HOME=%JAVA_HOME_1_6%
    )
    
    echo "当前选择的Java路径:%TARGET_JAVA_HOME%"
    
    wmic ENVIRONMENT where "name='JAVA_HOME'" delete
    wmic ENVIRONMENT create name="JAVA_HOME",username="<system>",VariableValue="%TARGET_JAVA_HOME%"
    
    rem --- set path ---
    set jhb=%TARGET_JAVA_HOME%\bin
    set pt=%Path%
    
    call set pt=%%pt:%jhb%;=%%
    call set pt=%%pt:%jhb%=%%
    
    wmic ENVIRONMENT where "name='Path' and username='<system>'" set VariableValue="%jhb%;%pt%"
    
    rem -- refresh env ---
    call RefreshEnv
    echo 任意键退出...
    pause>nul
    chcp 936
    @echo on

粘贴到TXT文本中，另存为 .bat就可以使用了。