用javaMail发邮件,出现如下错误!求助~~~以前没的，突然就有了.

DEBUG: setDebug: JavaMail version 1.3
javax.mail.internet.ParseException
at javax.mail.internet.ParameterList.<init>(ParameterList.java:77)
at javax.mail.internet.ContentDisposition.<init>(ContentDisposition.java:69)
at javax.mail.internet.MimeBodyPart.updateHeaders(MimeBodyPart.java:1104)
at javax.mail.internet.MimeBodyPart.updateHeaders(MimeBodyPart.java:824)
at javax.mail.internet.MimeMultipart.updateHeaders(MimeMultipart.java:215)
at javax.mail.internet.MimeBodyPart.updateHeaders(MimeBodyPart.java:1056)
at javax.mail.internet.MimeMessage.updateHeaders(MimeMessage.java:1914)
at javax.mail.internet.MimeMessage.saveChanges(MimeMessage.java:1895)
at com.matrix.sendMail.SendMail.send(SendMail.java:312)
at org.apache.jsp.sendMail_jsp._jspService(sendMail_jsp.java:164)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:334)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:595)