problem in reading attribute value from xml

[YolandaFang]

hi,
am using Jaxb2Marshaller to unmarshall xml data.i cant able to read attribute value.

xml record ...

<?xml version="1.0" encoding="Shift_JIS"?>
<ExposureData xsi:noNamespaceSchemaLocation="Exposure_Data.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<ProductType>a</ProductType>
<Product>SFT_NHA</Product>
<BusinessUnit Entity="NHA">NHA</BusinessUnit>
<BaseDate>2008-12-30</BaseDate>
<CSAContract>YES</CSAContract>
</ExposureData>

i want to get Entity value and have annotated the field like this ....

@XmlAttribute(required = true)
@XmlJavaTypeAdapter(CollapsedStringAdapter.class)
private String Entity = null;

any idea's....
how to get attribute value.

thanks,
Yolanda.

XML inspection before OXM binding

[YolandaFang]

Help!! I find the answer for a long time.