linux下开发短信猫遇到问题，请帮忙

[abiandbel]

linux下jdk
jdk/jre/lib javax.comm.properties 内容：Driver=gun.io.RXTXCommDriver
jdk/jre/lib/i386 下放linuxSerrial.so

RXTXcomm.jar我放在了classpath
还有commons-net-1.4.1.jar
jindisms-3.1-RC1.jar
log4j-1.2.15.jar

例子程序SendMessage.java
这句
SerialModemGateway gateway = new SerialModemGateway("jindi",
"/dev/ttyS0", 115200, "wavecom", "M1306B", srv.getLogger());

报错：
Exception in thread "main" java.lang.NoClassDefFoundError: javax/comm/SerialPortEventListener
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:632)
at java.lang.ClassLoader.defineClass(ClassLoader.java:616)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
at com.jindi.SendMessage.doIt(SendMessage.java:25)
at com.jindi.SendMessage.main(SendMessage.java:82)
Caused by: java.lang.ClassNotFoundException: javax.comm.SerialPortEventListener
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
... 14 more