系统发生内部错误!

展开
org.springframework.dao.RecoverableDataAccessException: ### Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet successfully received from the server was 3,653,124 milliseconds ago. The last packet sent successfully to the server was 0 milliseconds ago. ### The error may exist in file [/www/tms.china.com/WEB-INF/classes/com/china/basic/mybatis/BaikeCategory.xml] ### The error may involve defaultParameterMap ### The error occurred while setting parameters ### SQL: select * from baike_category WHERE group_name =? and source = ? ### Cause: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet successfully received from the server was 3,653,124 milliseconds ago. The last packet sent successfully to the server was 0 milliseconds ago. ; SQL []; Communications link failure The last packet successfully received from the server was 3,653,124 milliseconds ago. The last packet sent successfully to the server was 0 milliseconds ago.; nested exception is com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet successfully received from the server was 3,653,124 milliseconds ago. The last packet sent successfully to the server was 0 milliseconds ago.