ajax 配置写法：
<!DOCTYPE dwr PUBLIC
"-//GetAhead Limited//DTD Direct Web Remoting 1.0//EN"
"http://www.getahead.ltd.uk/dwr/dwr10.dtd">
<dwr>
<allow>
<convert converter="bean" match="com.redmoon.oa.message.MessageDb"/>
<create creator="new" javascript="MessageDb" class="com.redmoon.oa.message.MessageDb">
<include method="getNewMsgsOfUser"/>
</create>
</allow>
</dwr>