java.awt.HeadlessException: No X11 DISPLAY variable was set, but this program performed an operatio

在音频文件转换是我调用了第三方的jar包，jl1.0.1.jar和jmp123.jar

服务器环境是centos5.4，但是将wav格式的语音文件装成wav16时报错java.awt.HeadlessException: 
No X11 DISPLAY variable was set, but this program performed an operation which requires it，转换失败，

修改方法，编辑tomcat的catalina.sh文件，在JAVA_OPTS中加入-Djava.awt.headless=false参数，如下

JAVA_OPTS=" -Djava.awt.headless=false"

成功！