问题
tl;dr: How can I run the Tomcat JSP compiler from a Windows command line with verbose or debug logging and compile both the JSP and the Java code?
I want to do a simple test compilation of a JSP for a Tomcat6 environment running on Windows 2008 Server. I'd like to do it with as little installed "stuff" (including Ant) as possible, because I'm going to do this on a build grid that has no other reason to compile any Java code. And I'm going to throw away the compilation result when I'm done - this is just a compilation for an early sanity check. So I really want to avoid "stuff" I don't Need-with-a-capital-N.
It should be pretty easy to run Tomcat's JSP compiler (Jasper, aka JspC) from the command line, but it isn't. I've been able to convice JspC to translate the JSP to Java with the following (buried in a BAT file, but here for simplicity):
"C:\Program Files\Java\jdk1.7.0_17\bin\java" ...
... "-classpath" ".\Jasper\lib\jasper.jar;" ...
... ".\Jasper\lib\servlet-api.jar;" ...
... ".\Jasper\lib\catalina.jar;" ...
... ".\Jasper\lib\tomcat-juli.jar;" ...
... ".\Jasper\lib\ant.jar;" ...
... ".\Jasper\lib\jsp-api.jar;" ...
... ".\Jasper\lib\jasper-el.jar;" ...
... ".\Jasper\lib\el-api.jar" ...
... "org.apache.jasper.JspC" -uriroot ./ -s -v -l whatever.jsp
And of course I get a nice console message
Aug 20, 2013 12:34:40 PM org.apache.jasper.JspC processFile INFO: Built File: whatever.jsp
and an org\apache\jsp\src\whatever_jsp.java file. But if I add the -compile JspC option, which should compile whatever_jsp.java to whatever_jsp.class, I get no console output, no .class file, and an exit code of 1.
Obviously something's wrong. But since nobody on the net seems to describe how to run JspC except as an Ant task, I'm one clue short of a sixpack. And I can't seem to convince JspC to log at a verbose or DEBUG level, so while I'm sure it's some kind of setup problem, I can't get any diagnostic output.
来源：https://stackoverflow.com/questions/18340673/command-line-procedure-to-precompile-jsps-on-windows-for-tomcat6