Help. how to trim the body using Spring XML

Hi,

Please help. Xpath throw exception "Premature end of file" as following
when the XML message has extra space or some other character in front. How
do I trim on it such as <transform><trim>${body}</trim></transform>?
Thanks. Justin

11:06:17,390 | ERROR | test | DefaultErrorHandler
| 91 - org.apache.camel.camel-core - 2.8.5 | Failed delivery for
exchangeId: ID-huhehaotehome1-3996-1372559195953-10-315. Exhausted after
delivery attempt: 1 caught: org.apache.camel.TypeConversionException: Error
during type conversion from type:
org.apache.camel.converter.stream.CachedOutputStream.WrappedInputStream to
the required type: org.w3c.dom.Document with value
org.apache.camel.converter.stream.CachedOutputStream$WrappedInputStream [ at ] d4dd2ddue
org.xml.sax.SAXParseException: Premature end of file.

org.apache.camel.TypeConversionException: Error during type conversion from
type:
org.apache.camel.converter.stream.CachedOutputStream.WrappedInputStream to
the required type: org.w3c.dom.Document with value
org.apache.camel.converter.stream.CachedOutputStream$WrappedInputStream [ at ] d4dd2ddue
org.xml.sax.SAXParseException: Premature end of file.
at
org.apache.camel.impl.converter.BaseTypeConverterRegistry.convertTo(BaseTypeConverterRegistry.java:116)[91:org.apache.camel.camel-core:2.8.5]
at
org.apache.camel.core.osgi.OsgiTypeConverter.convertTo(OsgiTypeConverter.java:102)[152:org.apache.camel.camel-blueprint:2.8.5]