substitute the value, e.g. build the URI by concat the strings together, then you can use the java.lang.String.format method. But in Camel 2.0 we have added two convenient methods in the Java DSL so you can do fromF and toF that uses String formattin

介绍了ASP基础知识，从浅到深，通俗易懂-Introduced the basic knowledge of ASP, from shallow to deep, easy to understand