實體類與數據庫字段不匹配問題,java.sql.SQLSyntaxErrorException: Unknown column 'xxx' in 'field list'


控制台報錯

### 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 cause

java.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]

 

瀏覽器報錯

Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.

Tue Aug 06 13:10:39 CST 2019
There 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'

 

出錯的時候

 

 

修改之后,修改之后重啟,就可以正常訪問了!!!

 

 


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