另一个不寻常的Java ClassNotFound

Question

I have a small programm and several .sh files to execute it. I use Raspberry-pi virtual box emulator to run it. (Don't ask why... just need it.. :) ) So, my .sh file looks like:

export HSQLDB_JAR=../lib/hsqldb-2.2.8.jar

java -classpath $HSQLDB_JAR org.hsqldb.Server -database.0 ../my-hsqldb/my-hsqldb -dbname.0        my-hsqldb

I have the needed jars, java is installed properly (checked several times), blah-blah, all the same:

rpi@RaspberryPi:/home/snb/my/apps/MyApp/bin$ sh skysql.sh
: not found2: 
Exception in thread "main" java.lang.NoClassDefFoundError: org/hsqldb/Server
Caused by: java.lang.ClassNotFoundException: org.hsqldb.Server

The most interesting thing, that when I run the script from the sh file directly from bash - it works! But running the .sh file gives this error :(

Any help is very appreciated.

EDIT

The following directories have all of the access rules, so no security issues could happen. They are all accessible.

EDIT #2

I have used the offered answers and comments and that's what happened:

1. Still same stuff :(

2. My .sh file:

    #!/bin/bash export HSQLDB_JAR="$(pwd)/hsqldb-2.2.8.jar" echo $HSQLDB_JAR java -classpath $HSQLDB_JAR org.hsqldb.Server -database.0 ../my-hsqldb/my-hsqldb -dbname.0 my-hsqldb 

The terminal output is:

rpi@RaspberryPi:/home/snb/my/apps/MyApp/bin$ sh skysql.sh
: not found2: 
: not found4: 
/home/snb/my/apps/MyApp/lib/hsqldb-2.2.8.jar
: not found6: 
Exception in thread "main" java.lang.NoClassDefFoundError: org/hsqldb/Server
Caused by: java.lang.ClassNotFoundException: org.hsqldb.Server
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
Could not find the main class: org.hsqldb.Server.  Program will exit.
: not found8: 

So, as you can see, the .jar is actually found and it is in the right path.

Answer 1

This is probably a bug in a part of the script that you don't show. Try this:

1. Make sure the first line of your script reads #!/bin/bash

2. Make sure you're in the folder that you think you are. Add

    if [ ! -e "$HSQLDB_JAR" ]; then echo "Jar not found!" ; exit 1 ; fi 

   before calling java

3. To see what the shell actually executes, use -x (either add -x as parameter to the first line or activate it with the command set -x ).

If you need to generate a path relative to your script, use this code:

BASE=$( cd $( dirname "$0" ) > /dev/null && pwd )
HSQLDB_JAR="$BASE/../lib/hsqldb-2.2.8.jar"

Always quote variables which contain paths to make sure white space works properly.