[jira] [Created] (MIME4J-307) Header::getField with class cast can fail with NPE

["Benoit Tellier (Jira)" <mi...@james.apache.org>]

Benoit Tellier created MIME4J-307:
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             Summary: Header::getField with class cast can fail with NPE
                 Key: MIME4J-307
                 URL: https://issues.apache.org/jira/browse/MIME4J-307
             Project: James Mime4j
          Issue Type: Task
          Components: dom
            Reporter: Benoit Tellier
             Fix For: 0.8.7



{code:java}
original.getHeader().getField("Sender", MailboxField.class)
{code}

On an email without a sender will yield:

{code:java}
java.lang.NullPointerException
	at org.apache.james.mime4j.message.AbstractHeader.getField(AbstractHeader.java:128)
	at org.apache.james.mime4j.dom.MessageTest.test(MessageTest.java:446)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
{code}

That's a shame, the method is convenient.

To fix this, add a null check.



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