将 jar 文件添加到类路径
我正在制作一个构建脚本作为批处理文件（不要问我为什么或建议替代方案。你不会提供帮助）。我有一个名为 CLASSPATH 的变量，与 java 编译器一起使用。 CLASSPATH 包含许多目录和 jar 文件的路径。除此之外，我想添加 .[some-long-path]\lib\ 目录中的每个 jar 文件
它看起来像这样：
SET /p dummy=%CLASSPATH%>classpath.tmp~<nul
SET WAR_LIB_PATH=war\WEB-INF\lib
DIR %WAR_LIB_PATH% /B | findstr /L ".jar" > jars.tmp~
REM Have to put it into an external file
FOR /f %%j in (jars.tmp~) do (
SET /p dummy=;%WAR_LIB_PATH%\%%j>>classpath.tmp~<nul
)
SET /P CLASSPATH=<classpath.tmp~
ECHO %CLASSPATH%
这几乎可以工作。只有两个问题：
- 条目之间出现空格，这会破坏类路径。
- 它在 1024 个字符后突然结束。
有人可以帮我解决这个问题吗？
I am making a build script as a batch file (don't ask me why or suggest alternatives. You won't be helping). I have a variable called CLASSPATH that I use with the java compiler. CLASSPATH contains paths to numerous directories and jar files. In addition to those, I'd like to add every jar file in the .[some-long-path]\lib\ directory
It looks something like this:
SET /p dummy=%CLASSPATH%>classpath.tmp~<nul
SET WAR_LIB_PATH=war\WEB-INF\lib
DIR %WAR_LIB_PATH% /B | findstr /L ".jar" > jars.tmp~
REM Have to put it into an external file
FOR /f %%j in (jars.tmp~) do (
SET /p dummy=;%WAR_LIB_PATH%\%%j>>classpath.tmp~<nul
)
SET /P CLASSPATH=<classpath.tmp~
ECHO %CLASSPATH%
This ALMOST works. There are just two problems:
- Somehow a space appears between entries, which ruins the classpath.
- It abruptly ends after 1024 characters.
Can someone help me with this?
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如果您使用 java6，则只需编写
dir/*即可包含目录中的所有 jarhttp://download.oracle.com/javase/6/docs/technotes/tools/windows/javac.html
If you use java6, it's enough to write
dir/*to include all jars in the dirhttp://download.oracle.com/javase/6/docs/technotes/tools/windows/javac.html
如果您正在运行
javac，请尝试使用-classpath命令行参数而不是环境变量，因为这些变量在不同操作系统上有大小限制。纯粹作为旁注，如果您从 JAR 运行程序（例如
java -jar app.jar），您可以 添加元数据 执行完成相同操作的 JAR 文件。If you are running
javac, then try using the-classpathcommand-line argument instead of the environment variable, since those variables are size-limited on different operating systems.And purely as a side note, if you are running a program from a JAR (ex
java -jar app.jar), you can add metadata do the JAR file that accomplishes the same thing.