报错：springmvc threw exception com.ibatis.sqlmap.client.SqlMapException: There is
no statement named 语句名 in this SqlMap.sqlmap-config.xml 中 必须加上这行：<settings cacheModelsEnabled="true" enhancementEnabled="false" lazyLoadingEnabled="false" maxRequests="3000" maxSessions="3000" maxTransactions="3000" useStatementNamespaces="true"/>