HTTP Status 500 - Request processing failed; nested exception is org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.TooManyResultsException: Expected one result (or null) to be returned by selectOne(), but found: 4
查询结果应该为1 数据库根据你提供的查询条件，查出符合条件的记录有多条， 检查自己的数据库----- 检查自己的查询判定条件---------Multiple markers at this line - Unhandled exception type UnsupportedEncodingException- Unhandl
多标记在这一行，Unhandled异常类型unsupportedencod
try catch一下
HTTP Status 500 - Request processing failed; nested exception is org.springframework.dao.Recoverable
message Request processing failed; nested exception is org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLException: An attempt by a client to checkout a Connection has timed out.
可能是数据库c3p0配置不对，设置---连接失败过后，重新连接的时间