JavaMail 的 DCH 类错误 [英] DCH class error with JavaMail
问题描述
我正在尝试使用 Glassfish 3.1 提供的 jar 文件在 Java EE 6 中使用 JavaMail 设置一个简单的日志记录测试.关于这个主题似乎有很多问题，但我还没有找到任何有帮助的答案.我的测试代码如下所示:
I'm attempting to set up a simple logging test with JavaMail in Java EE 6, using the jar files provided with Glassfish 3.1. There seems to be a wealth of questions out there on this subject, but I haven't found any answers that have helped yet. My test code looks like this:
import java.util.logging.Logger;
public class MyClass {
private static final Logger LOGGER = Logger.getLogger("MyClass");
public static void main(String[] args) {
LOGGER.severe("This is a test");
}
}
我的 logging.properties 文件包含以下内容:
My logging.properties file contains this:
com.sun.mail.util.logging.MailHandler.mail.smtp.host={my mail hub FQDN}
com.sun.mail.util.logging.MailHandler.mail.smtp.port=25
com.sun.mail.util.logging.MailHandler.mail.to={me}
com.sun.mail.util.logging.MailHandler.mail.from={support address}
com.sun.mail.util.logging.MailHandler.level=WARNING
com.sun.mail.util.logging.MailHandler.verify=local
com.sun.mail.util.logging.MailHandler.subject=Application Error
com.sun.mail.util.logging.MailHandler.formatter=java.util.logging.SimpleFormatter
我使用以下方法构建类:
I build the class using:
javac -cp $AS_INSTALL/glassfish/modules/javax.mail.jar:$AS_INSTALL/install/lib/external/jaxb/activation.jar:. MyClass.java
然后我使用:
java -cp $AS_INSTALL/glassfish/modules/javax.mail.jar:$AS_INSTALL/install/lib/external/jaxb/activation.jar:. -Djava.util.logging.config.file=logging.properties MyClass
这会导致以下错误:
Sep 22, 2011 4:19:25 PM MyClass main
SEVERE: This is a test
java.util.logging.ErrorManager: 3: SEVERE: no object DCH for MIME type multipart/mixed;
boundary="----=_Part_1_26867996.1316722766145"
javax.activation.UnsupportedDataTypeException: no object DCH for MIME type multipart/mixed;
boundary="----=_Part_1_26867996.1316722766145"
at javax.activation.ObjectDataContentHandler.writeTo(DataHandler.java:877)
at javax.activation.DataHandler.writeTo(DataHandler.java:302)
at javax.mail.internet.MimeBodyPart.writeTo(MimeBodyPart.java:1476)
at javax.mail.internet.MimeMessage.writeTo(MimeMessage.java:1772)
at javax.mail.internet.MimeMessage.writeTo(MimeMessage.java:1748)
at com.sun.mail.util.logging.MailHandler.toRawString(MailHandler.java:2196)
at com.sun.mail.util.logging.MailHandler.send(MailHandler.java:1597)
at com.sun.mail.util.logging.MailHandler.close(MailHandler.java:552)
at java.util.logging.LogManager.resetLogger(LogManager.java:693)
at java.util.logging.LogManager.reset(LogManager.java:676)
at java.util.logging.LogManager$Cleaner.run(LogManager.java:221)
javax.mail.MessagingException: IOException while sending message;
nested exception is:
javax.activation.UnsupportedDataTypeException: no object DCH for MIME type multipart/mixed;
boundary="----=_Part_1_26867996.1316722766145"
at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:1141)
at javax.mail.Transport.send0(Transport.java:195)
at javax.mail.Transport.send(Transport.java:124)
at com.sun.mail.util.logging.MailHandler.send(MailHandler.java:1594)
at com.sun.mail.util.logging.MailHandler.close(MailHandler.java:552)
at java.util.logging.LogManager.resetLogger(LogManager.java:693)
at java.util.logging.LogManager.reset(LogManager.java:676)
at java.util.logging.LogManager$Cleaner.run(LogManager.java:221)
Caused by: javax.activation.UnsupportedDataTypeException: no object DCH for MIME type multipart/mixed;
boundary="----=_Part_1_26867996.1316722766145"
at javax.activation.ObjectDataContentHandler.writeTo(DataHandler.java:877)
at javax.activation.DataHandler.writeTo(DataHandler.java:302)
at javax.mail.internet.MimeBodyPart.writeTo(MimeBodyPart.java:1476)
at javax.mail.internet.MimeMessage.writeTo(MimeMessage.java:1772)
at com.sun.mail.smtp.SMTPTransport.sendMessage(SMTPTransport.java:1099)
... 7 more
我已经确认我的 javax.mail.jar 文件包含多部分处理程序:
I've verified that my javax.mail.jar file contains the multipart handler:
unzip -l $AS_INSTALL/glassfish/modules/javax.mail.jar | grep multipart
2617 01-14-2011 15:37 com/sun/mail/handlers/multipart_mixed.class
我什至在启用了激活调试的情况下运行了该程序.这向我展示了以下相关部分:
I've even run the program with the activation debugging enabled. This shows me the following related parts:
parse: multipart/*;; x-java-content-handler=com.sun.mail.handlers.multipart_mixed; x-java-fallback-entry=true
Type: multipart/*
Command: content-handler, Class: com.sun.mail.handlers.multipart_mixed
MailcapCommandMap: createDataContentHandler for multipart/mixed
search DB #1
search DB #2
search fallback DB #1
got content-handler
class com.sun.mail.handlers.multipart_mixed
Can't load DCH com.sun.mail.handlers.multipart_mixed; Exception: java.lang.ClassNotFoundException: com/sun/mail/handlers/multipart_mixed
我什至得到了上述文本/纯文本类型的副本.
I even get a duplicate of the above for type text/plain.
MailcapCommandMap: createDataContentHandler for text/plain
search DB #1
got content-handler
class com.sun.mail.handlers.text_plain
Can't load DCH com.sun.mail.handlers.text_plain; Exception: java.lang.ClassNotFoundException: com/sun/mail/handlers/text_plain
我在这里遗漏了什么?
谢谢，史蒂夫
推荐答案
我在这里找到了解决方案:
I found the solution here:
http://blog.hpxn.net/2009/12/02/tomcat-java-6-and-javamail-cant-load-dch/
虽然我很想知道更多关于为什么这是一个问题的细节以及这个 -Xbootclasspath 选项正在做什么来纠正这个问题.如果我像这样运行我的课程:
Though I would love to know more about the details behind why this is an issue and what this -Xbootclasspath option is doing to correct the problem. If I run my class like this:
java -Djava.util.logging.config.file=logging.properties -Xbootclasspath/p:/app/glassfish-3.1/glassfish/modules/javax.mail.jar MyClass
它找到了必要的课程，我收到了我的电子邮件.现在我只需要弄清楚如何将这个配置转换到我的 Glassfish 服务器中，并从这个简单的测试用例中尝试一个更真实"的测试.
It finds the necessary classes and I get my email. Now I just have to figure out how to translate this configuration into my Glassfish server and try a more "real" test from this simple test case.
这篇关于JavaMail 的 DCH 类错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
