Structure definition error. The names and types of fields in the structure should correspond to the names and types of XML elements and attributes. If the structure definition does not match the structure of the xml document, golang will not be able to match the content and structure when parsing XML. Go (also called Golang) is a static strongly typed compilation language developed by RobertGriesemer, RobPike and KenThompson of Google. The syntax of Go language is similar to that of C, but its functions are: memory security, GC (garbage collection), structural form and CSP-style concurrent computing.