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POWhy can't Tomcat find SMTPTransport(Session, URLName)?
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  1. POWhy can't Tomcat find SMTPTransport(Session, URLName)?
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    copied!<p>We've got a web application that sends mail. For some reason, an installation of it has decided that it can't find the constructor for SMTPTransport that takes (Session,URLName) arguments. </p> <p>Relevant bits of the stack trace:</p> <pre><code> javax.mail.NoSuchProviderException: Provider class does not have a constructor(Session, URLName): protocol=smtp; type=javax.mail.Provider$Type@1dedf78; class=com.sun.mail.smtp.SMTPTransport; vendor=Sun Microsystems, Inc at javax.mail.Session.getService(Session.java:499) at javax.mail.Session.getTransport(Session.java:387) at javax.mail.Session.getTransport(Session.java:347) at javax.mail.Session.getTransport(Session.java:376) at javax.mail.Transport.send(Transport.java:67) at javax.mail.Transport.send(Transport.java:48) ... Caused by: java.lang.NoSuchMethodException: com.sun.mail.smtp.SMTPTransport.&lt;init&gt;(javax.mail.Session, javax.mail.URLName) at java.lang.Class.getConstructor0(Class.java:2706) at java.lang.Class.getConstructor(Class.java:1657) at javax.mail.Session.getService(Session.java:496) ... 8 more </code></pre> <p>We've already checked that SMTPTransport does exist in the classpath (which is not surprising, since we're not getting a ClassNotFoundException), and that it is the only copy of that class in the classpath. It's in tomcat/lib. Our webapp does not include a duplicate. There is not a duplicate in $JAVA_HOME/jre/lib. </p> <p>I've even gone so far as to <em>decompile</em> the class to verify that it <em>does in fact</em> have the Constructor in question.</p> <p>I've done a bit of googling and have found other people who have <a href="http://groups.google.com/group/google-web-toolkit/browse_thread/thread/d409eca7cae99fe9" rel="noreferrer">seen the same error</a>, but no fixes for the problem.</p>
 

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