控制台报错### Error querying database. Cause: java.sql.SQLSyntaxErrorException: Unknown column ‘user_name‘ in ‘field list‘### The error may exist in panfeng/mapper/StudentMapper.java (best guess)### The error may involve panfeng.mapper.StudentMapper.selectByPrimaryKey-Inline### The error occurred while setting parameters### SQL: SELECT id,user_name,password,email FROM student WHERE id = ?### Cause: java.sql.SQLSyntaxErrorException: Unknown column ‘user_name‘ in ‘field list‘; bad SQL grammar []; nested exception is java.sql.SQLSyntaxErrorException: Unknown column ‘user_name‘ in ‘field list‘] with root causejava.sql.SQLSyntaxErrorException: Unknown column ‘user_name‘ in ‘field list‘ at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:120) ~[mysql-connector-java-8.0.16.jar:8.0.16] at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) ~[mysql-connector-java-8.0.16.jar:8.0.16]
浏览器报错Whitelabel Error PageThis application has no explicit mapping for /error, so you are seeing this as a fallback.Tue Aug 06 13:10:39 CST 2019There was an unexpected error (type=Internal Server Error, status=500).### Error querying database. Cause: java.sql.SQLSyntaxErrorException: Unknown column ‘user_name‘ in ‘field list‘ ### The error may exist in panfeng/mapper/StudentMapper.java (best guess) ### The error may involve panfeng.mapper.StudentMapper.selectByPrimaryKey-Inline ### The error occurred while setting parameters ### SQL: SELECT id,user_name,password,email FROM student WHERE id = ? ### Cause: java.sql.SQLSyntaxErrorException: Unknown column ‘user_name‘ in ‘field list‘ ; bad SQL grammar []; nested exception is java.sql.SQLSyntaxErrorException: Unknown column ‘user_name‘ in ‘field list‘
