我正在为客户发送电子邮件的webservice工作，我在debian jessie上使用netbeans 8.2作为IDE，avery认为工作得很好，但是当我在vps上部署tomcat8 web服务器上的web服务时 类型异常报告
message Servlet execution threw an exception
description The server encountered an internal error that prevented
it from fulfilling this request.
exception
javax.servlet.ServletException: Servlet execution threw an exception
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause
java.lang.NoClassDefFoundError: com/sun/mail/util/MailLogger
javax.mail.internet.MailDateFormat.<clinit>(MailDateFormat.java:154)
javax.mail.internet.MimeMessage.<clinit>(MimeMessage.java:177)
dz.GpsTracker.daoe.DAOEGestionEmailsImp.envoyer(DAOEGestionEmailsImp
.java:42)
dz.GpsTracker.servlets.Inscription.doPost(Inscription.java:167)
javax.servlet.http.HttpServlet.service(HttpServlet.java:644)
javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause
java.lang.ClassNotFoundException: com.sun.mail.util.MailLogger
org.apache.catalina.loader.WebappClassLoaderBase.loadClass
(WebappClassLoaderBase.java:1294)
org.apache.catalina.loader.WebappClassLoaderBase.loadClass
(WebappClassLoaderBase.java:1146)
javax.mail.internet.MailDateFormat.<clinit>(MailDateFormat.java:154)
javax.mail.internet.MimeMessage.<clinit>(MimeMessage.java:177)
dz.GpsTracker.daoe.DAOEGestionEmailsImp.envoyer(DAOEGestionEmailsImp.
java: 42)
dz.GpsTracker.servlets.Inscription.doPost(Inscription.java:167)
javax.servlet.http.HttpServlet.service(HttpServlet.java:644)
javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
note The full stack trace of the root cause is available in the
Apache Tomcat/8.0.14 (Debian) logs.
我没有使用maven
我在/ usr / share / tomcat8 / lib /上复制java.mail
我在/ var / lib / tomcat8 / webapps / mywebservice / WEB-INF / classes / dz / mywebservice / lib /上的java.mail
我在java.mail jar上使用了chmod 777
我是javax.mail-api-1.6.0.jar和mail.jar
答案 0 :(得分：1)