一个用批处理（BAT）来运行web工程的例子（jetty）

本代码是为了用BAT（批处理）来完整展示java的编译和执行过程。为方便理解，添加较多备注

下面是代码：保存为.bat格式即可双击运行。如果你想使用，只要更改红色字体部分与你实际代码的相对位置相符即可。

@echo *********************************************************************************
@echo ****  enter into the folder of  current file                           **********
@echo ****  1,make sure that this file is in root folder                     **********          
@echo *********************************************************************************
set DIRNAME=.\
if "%OS%" == "Windows_NT" set DIRNAME=%~dp0%
%~d0
cd %DIRNAME%\..

@echo *********************************************************************************
@echo **** set the CLASSPATH                                  **********
@echo **** 1,find the .jar in root folder                                    **********
@echo **** eg: for  /r %CD% %%i in (*.jar) do echo "%%i"        **********
@echo **** if you want to add var ,you must use this                         **********
@echo "setlocal enabledelayedexpansion"  and !var! as follows                **********
@echo *********************************************************************************
setlocal enabledelayedexpansion
for  /r %CD% %%i in (*.jar) do (
 set  CLASSPATH=!CLASSPATH!;%%i
)

@echo *********************************************************************************
@echo **** compile the .jar file--do not forget the classpath                 *********
@echo *********************************************************************************
javac -classpath %CLASSPATH% src/test/jetty/OneWebApp.java-d %CD%/build/classes

@echo *********************************************************************************
@echo **** run--do not forget the classpath else if you use it in compile     *********
@echo *********************************************************************************
cd build/classes
@echo javaw test.jetty.OneWebApp
java test.jetty.OneWebApp
pause