The content of elements must consist of well-formed character data or markup.

mybaties Mapper.xml sql语句报： The content of elements must consist of well-formed character data or markup.

xml里不支持小于（<）符号，网上说被当成页面元素解析。解决方法把符号写在<![CDATA[ ]]>里，即<![CDATA[<]]>。