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  • mybatis和mybatisPlus中解决实体类字段与数据库关键字冲突问题

    写在前面

      由于数据库表字段名称设计不合理,导致与MySQL数据库关键字或者预留关键字一致,在这种情况下,将会导致数据插入不成功,这里主要针对Mybatis和MybatisPlus提出对应的解决方案,仅供参考!

    一、Mybatis中解决方案

    1、针对XML文件,可以在冲突的字段名添加 ` ` ( 反单引号在 键盘Esc键下面的那个,注意切换英文输入法 ) 引起来,如下所示:

    <insert id="addParam"  useGeneratedKeys="true" keyProperty="id"  parameterType="com.pct.dotware.pams.entity.SysParam">
            insert into sys_param
            (
                `key`,
                `value`,
                `status`,
                `create_by`,
                `create_time`,
                `remark`
            )
            values(
                #{item.key},
                #{item.value},
                #{item.status},
                #{item.createBy},
                #{item.createTime},
                #{item.remark}
            )
    </insert>        

    2、如果不想修改xml文件,也可针对实体类进行修改,可以通过添加@Column注解,如下所示:

    @Column(name = "`key`")
    private String key;

    针对Mybatis,以上两种任选其一即可。

    二、MybatisPlus解决方案

    对于MybatisPlus解决就很简单了,直接在实体类上添加  @TableField 注解,给上别名加上反单引号即可。如下所示:

    @TableFiled(name = "`key`")
    private String key;

    附录:

      MySQL关键字列表:

    ADD ALL ALTER
    ANALYZE AND AS
    ASC ASENSITIVE BEFORE
    BETWEEN BIGINT BINARY
    BLOB BOTH BY
    CALL CASCADE CASE
    CHANGE CHAR CHARACTER
    CHECK COLLATE COLUMN
    CONDITION CONNECTION CONSTRAINT
    CONTINUE CONVERT CREATE
    CROSS CURRENT_DATE CURRENT_TIME
    CURRENT_TIMESTAMP CURRENT_USER CURSOR
    DATABASE DATABASES DAY_HOUR
    DAY_MICROSECOND DAY_MINUTE DAY_SECOND
    DEC DECIMAL DECLARE
    DEFAULT DELAYED DELETE
    DESC DESCRIBE DETERMINISTIC
    DISTINCT DISTINCTROW DIV
    DOUBLE DROP DUAL
    EACH ELSE ELSEIF
    ENCLOSED ESCAPED EXISTS
    EXIT EXPLAIN FALSE
    FETCH FLOAT FLOAT4
    FLOAT8 FOR FORCE
    FOREIGN FROM FULLTEXT
    GOTO GRANT GROUP
    HAVING HIGH_PRIORITY HOUR_MICROSECOND
    HOUR_MINUTE HOUR_SECOND IF
    IGNORE IN INDEX
    INFILE INNER INOUT
    INSENSITIVE INSERT INT
    INT1 INT2 INT3
    INT4 INT8 INTEGER
    INTERVAL INTO IS
    ITERATE JOIN KEY
    KEYS KILL LABEL
    LEADING LEAVE LEFT
    LIKE LIMIT LINEAR
    LINES LOAD LOCALTIME
    LOCALTIMESTAMP LOCK LONG
    LONGBLOB LONGTEXT LOOP
    LOW_PRIORITY MATCH MEDIUMBLOB
    MEDIUMINT MEDIUMTEXT MIDDLEINT
    MINUTE_MICROSECOND MINUTE_SECOND MOD
    MODIFIES NATURAL NOT
    NO_WRITE_TO_BINLOG NULL NUMERIC
    ON OPTIMIZE OPTION
    OPTIONALLY OR ORDER
    OUT OUTER OUTFILE
    PRECISION PRIMARY PROCEDURE
    PURGE RAID0 RANGE
    READ READS REAL
    REFERENCES REGEXP RELEASE
    RENAME REPEAT REPLACE
    REQUIRE RESTRICT RETURN
    REVOKE RIGHT RLIKE
    SCHEMA SCHEMAS SECOND_MICROSECOND
    SELECT SENSITIVE SEPARATOR
    SET SHOW SMALLINT
    SPATIAL SPECIFIC SQL
    SQLEXCEPTION SQLSTATE SQLWARNING
    SQL_BIG_RESULT SQL_CALC_FOUND_ROWS SQL_SMALL_RESULT
    SSL STARTING STRAIGHT_JOIN
    TABLE TERMINATED THEN
    TINYBLOB TINYINT TINYTEXT
    TO TRAILING TRIGGER
    TRUE UNDO UNION
    UNIQUE UNLOCK UNSIGNED
    UPDATE USAGE USE
    USING UTC_DATE UTC_TIME
    UTC_TIMESTAMP VALUES VARBINARY
    VARCHAR VARCHARACTER VARYING
    WHEN WHERE WHILE
    WITH WRITE X509
    XOR YEAR_MONTH ZEROFILL
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  • 原文地址:https://www.cnblogs.com/cndarren/p/13650437.html
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