Re: JavaMail works inside Eclipse but not outside
Magnus Warker wrote:
Dear Nigel & subtenante,
I just called "java -jar myapp.jar", without giving the complete path to the
java interpreter binary file. After subtenantes posting I found out that
there is a java.exe located in c:\Windows\System32. This is different from
my JDK 1.5.0 and JRE 1.5.0. In eclipse there is only the JRE 1.5.0
installed.
So I tested PathTo\JRE1.5.0_07\bin\java and I was sure that it would work
now. But it did not! :-(
I also tested PathTo\JDK1.5.0_07\bin\java and
PathTo\JDK1.5.0_07\jre\bin\java (what's the difference?), but nothing
worked!
Within eclipse, the application works perfectly, i. e. it can send mail.
Here is the exception I receive when the application wants to send mail:
javax.mail.MessagingException: Could not connect to SMTP host:
post.mydomain.de, port: 25;
?? nested exception is:
?? ?? ?? ?? java.net.SocketException: Software caused connection abort: connect
?? ?? ?? ?? at
com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1282)
?? ?? ?? ?? at
com.sun.mail.smtp.SMTPTransport.protocolConnect(SMTPTransport.java:370)
?? ?? ?? ?? at javax.mail.Service.connect(Service.java:275)
?? ?? ?? ?? at javax.mail.Service.connect(Service.java:156)
?? ?? ?? ?? at javax.mail.Service.connect(Service.java:105)
?? ?? ?? ?? at javax.mail.Transport.send0(Transport.java:168)
?? ?? ?? ?? at javax.mail.Transport.send(Transport.java:98)
?? ?? ?? ?? at utl.mail.Mailer.send(Mailer.java:66)
?? ?? ?? ?? at utl.mail.Mailer.sendMail(Mailer.java:97)
?? ?? ?? ?? at utl.mail.Mailer.sendMail(Mailer.java:116)
?? ?? ?? ?? at pms.office.Monitor.report(Monitor.java:66)
?? ?? ?? ?? at pms.office.Monitor.execute(Monitor.java:105)
?? ?? ?? ?? at pms.Application.run_mon(Application.java:143)
?? ?? ?? ?? at pms.Application.run(Application.java:155)
?? ?? ?? ?? at pms.Application.main(Application.java:200)
Caused by: java.net.SocketException: Software caused connection abort:
connect
?? ?? ?? ?? at java.net.PlainSocketImpl.socketConnect(Native Method)
?? ?? ?? ?? at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
?? ?? ?? ?? at
java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
?? ?? ?? ?? at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
?? ?? ?? ?? at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
?? ?? ?? ?? at java.net.Socket.connect(Socket.java:516)
?? ?? ?? ?? at java.net.Socket.connect(Socket.java:466)
?? ?? ?? ?? at
com.sun.mail.util.SocketFetcher.createSocket(SocketFetcher.java:232)
?? ?? ?? ?? at com.sun.mail.util.SocketFetcher.getSocket(SocketFetcher.java:189)
?? ?? ?? ?? at
com.sun.mail.smtp.SMTPTransport.openServer(SMTPTransport.java:1250)
?? ?? ?? ?? ... 14 more
I ist possible that JavaMail behaves differently within eclipse?
I don't see how it could unless Eclipse changes its environment somehow, hence
the question regarding proxies. If, as you said above, you are denied access to
the SMTP server on port 25 I would reverse the question. How is Eclipse able to
connect to a host on port 25 which your network admins. claim is firewalled? Is
it really connecting to the host and port you think it is?
Are you absolutely sure that it is connecting to the host which you really
think it is?
Well, I used *one* host, which was hardcoded within the code, and the same
code works within eclipse and does not outside eclipse. My code
(utl.mail.Mailer.send) just calls JavaMail code. I cannot see what is
happening inside JavaMail. However, when I run the application (inside or
outside eclipse), is there a simple method to verify the network operations
that take place?
As I said, get Wireshark. Use it to capture the packets being sent when you run
your application in Eclipse. Analyse them to see what it really going on. Do
the same when you run your application outside of Eclipse. Look at both
analyses and try to determine the difference.
--
Nigel Wade, System Administrator, Space Plasma Physics Group,
University of Leicester, Leicester, LE1 7RH, UK
E-mail : nmw@ion.le.ac.uk
Phone : +44 (0)116 2523548, Fax : +44 (0)116 2523555