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Notice how we can reuse the namespace prefixes, foo in this case, in the XPath expression for easier namespace based XPath expressions!

Setting result type

The XPath expression will return a result type using native XML objects such as org.w3c.dom.NodeList. But many times you want a result type to be a String. To do this you have to instruct the XPath which result type to use.

In Java DSL:

xpath("/foo:person/@id", String.class)

In Spring DSL you use the resultType attribute to provide a fully qualified classname:

<xpath resultType="java.lang.String">/foo:person/@id</xpath>

Examples

Here is a simple example using an XPath expression as a predicate in a Message Filter

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