问题
I develop a project using .jar to reuse code.
So I have on .jar named TOOLS.jar, and I develop a simple application in file HelloWorld.java wich refer my package TOOLS from TOOLS.jar
I compile with this command line :
javac -g -d C:\\MyApp -cp TOOLS.jar HelloWorld.java
It\'s successful, and when I want to execute my application I use this command (I\'m in C:\\MyApp folder) :
java -cp <path>\\TOOLS.jar;. HelloWorld
It\'s successful, but my question is :
How do I execute my application when I have multiples external .jar ?
Do I Have to add each one in command with -cp option ?
Is there a way to generate only one binary file and execute it (as .exe with C programs) ?
回答1:
Concatenate each jar file argument to cp with:
; on Windows
: on Linux or Mac
e.g.
java -cp <path>\TOOLS.jar;.;<path>\jar2.jar;<path>\jar3.jar HelloWorld
on newer JVMs (6+, I think) you can also use the * to append all JARs in a directory e.g.
java -cp .;<path>\*; HelloWorld
To go a step further and create a single packaged executable see this question.
回答2:
If you have many jar files in one folder and don't want to append them to classpath manually. You can you a .bat on windows or shell on linux.
cpappend.bat from tomcat
rem ---------------------------------------------------------------------------
rem Append to CLASSPATH
rem
rem $Id: cpappend.bat 301115 2002-08-04 18:19:43Z patrickl $
rem ---------------------------------------------------------------------------
rem Process the first argument
if ""%1"" == """" goto end
set CLASSPATH=%CLASSPATH%;%1
shift
rem Process the remaining arguments
:setArgs
if ""%1"" == """" goto doneSetArgs
set CLASSPATH=%CLASSPATH% %1
shift
goto setArgs
:doneSetArgs
:end
And another bat file which use "for" statement to append all the jar file to classpath
set CURRENT_DIR=%cd%
set CLASSPATH=.
for %%i in (%CURRENT_DIR%\lib\*.jar) do call cpappend.bat %%i
start java -Duser.dir=%CURRENT_DIR% -cp %CLASSPATH% a.b.c.MainApp
来源：https://stackoverflow.com/questions/6069702/java-command-line-with-external-jar