在MyBatis中使用LocalDateTime进行数据库操作需要进行以下步骤:
import org.apache.ibatis.type.BaseTypeHandler;
import org.apache.ibatis.type.JdbcType;
import java.sql.CallableStatement;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.time.LocalDateTime;
public class LocalDateTimeTypeHandler extends BaseTypeHandler<LocalDateTime> {
@Override
public void setNonNullParameter(PreparedStatement ps, int i, LocalDateTime parameter, JdbcType jdbcType) throws SQLException {
ps.setTimestamp(i, Timestamp.valueOf(parameter));
}
@Override
public LocalDateTime getNullableResult(ResultSet rs, String columnName) throws SQLException {
Timestamp timestamp = rs.getTimestamp(columnName);
if (timestamp != null) {
return timestamp.toLocalDateTime();
}
return null;
}
@Override
public LocalDateTime getNullableResult(ResultSet rs, int columnIndex) throws SQLException {
Timestamp timestamp = rs.getTimestamp(columnIndex);
if (timestamp != null) {
return timestamp.toLocalDateTime();
}
return null;
}
@Override
public LocalDateTime getNullableResult(CallableStatement cs, int columnIndex) throws SQLException {
Timestamp timestamp = cs.getTimestamp(columnIndex);
if (timestamp != null) {
return timestamp.toLocalDateTime();
}
return null;
}
}
<typeHandlers>
<typeHandler handler="com.example.LocalDateTimeTypeHandler"/>
</typeHandlers>
import java.time.LocalDateTime;
public interface UserMapper {
void insertUser(@Param("name") String name, @Param("createTime") LocalDateTime createTime);
}
<insert id="insertUser" parameterType="map">
INSERT INTO user (name, create_time) VALUES (#{name}, #{createTime, jdbcType=TIMESTAMP})
</insert>
通过以上步骤,就可以在MyBatis中使用LocalDateTime进行数据库操作了。
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