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树莓派上的Tomcat无法初始化gnu.io.CommPortIdentifier

[英]Tomcat on raspberry pi couldnt initialize gnu.io.CommPortIdentifier

原文 2015-03-06 17:49:57 1 1 java/ tomcat/ java-ee/ raspberry-pi/ rxtx

I have Oracle's Java JDK 8 and Tomcat 8 installed on Raspberry PI. 我在Raspberry PI上安装了Oracle的Java JDK 8和Tomcat 8。

I have a standalone and a web application, both with the same functionaties (open serial communication). 我有一个独立的和一个Web应用程序，两者具有相同的功能（开放式串行通信）。 Both are running on my macbook. 两者都在我的Macbook上运行。

The problem is: The standalone application runs well on raspbian when I give the CLASSPATH with RXTXcomm.jar, like java -Djava.library.path=/usr/lib/jni -cp /usr/share/java/RXTXcomm.jar:. -jar myapp.jar 问题是：当我给CLASSPATH加上RXTXcomm.jar时，独立应用程序在raspbian上运行良好，例如java -Djava.library.path=/usr/lib/jni -cp /usr/share/java/RXTXcomm.jar:. -jar myapp.jar java -Djava.library.path=/usr/lib/jni -cp /usr/share/java/RXTXcomm.jar:. -jar myapp.jar

But the web application doesn't run. 但是该Web应用程序无法运行。 I put the war file is Tomcat's webapps directory. 我把war文件放在Tomcat的webapps目录中。 When I try to go to http://localhost:8080/myApp/ , I get the message: 当我尝试转到http://localhost:8080/myApp/ ，收到消息：

HTTP Status 500 - javax.servlet.ServletException: java.lang.NoClassDefFoundError: Could not initialize class gnu.io.CommPortIdentifier HTTP状态500-javax.servlet.ServletException：java.lang.NoClassDefFoundError：无法初始化类gnu.io.CommPortIdentifier

What would cause it? 是什么原因造成的？

1 个解决方案

You can try copying a compatible version of RXTXcomm.jar into your tomcat/lib directory. 您可以尝试将兼容版本的RXTXcomm.jar复制到tomcat / lib目录中。 All jars in Tomcat/lib are available on the classpath when running webapps. 运行webapps时，classpath中可以使用Tomcat / lib中的所有jar。