????@Test
????public?void?insert(){
????????User?user?=?new?User();
????????user.setName("tom");
????????user.setManagerId(1088248166370832385L);
????????user.setCreateTime(new?Date());
????????int?insert?=?userMapper.insert(user);
????????System.out.println("insert?=?"?+?insert);
????}

org.springframework.dao.DataIntegrityViolationException:?

### Error updating database.? Cause: java.sql.SQLException: Field 'id' doesn't have a default value

### The error may exist in com/exam/demo/mapper/UserMapper.java (best guess)

### The error may involve com.exam.demo.mapper.UserMapper.insert-Inline

### The error occurred while setting parameters

### SQL: INSERT INTO user? ( name,? ?manager_id, create_time )? VALUES? ( ?,? ??, ? )

### Cause: java.sql.SQLException: Field 'id' doesn't have a default value

; Field 'id' doesn't have a default value; nested exception is java.sql.SQLException: Field 'id' doesn't have a default value