ORA-01790: 表达式必须具有与对应表达式相同的数据类型

mapper

java 复制代码

void insertBatch(@Param("inventoryAuthHisList") List<InventoryAuthHis> inventoryAuthHisList);

xml

xml 复制代码

    <insert id="insertBatch">
        insert into T_INVENTORY_AUTH_HIS (HIS_OPER_ID, HIS_OPER_DATE, HIS_OPER_TYPE, AUTH_ID, INVENTORY_ID, USER_ID, AUTH_TYPE, AREA_ID)
        <foreach collection="inventoryAuthHisList" item="item" open="(" separator=" union all " close=")">
            select #{item.hisOperId}, #{item.hisOperDate}, #{item.hisOperType}, #{item.authId}, #{item.inventoryId}, #{item.userId}, #{item.authType}, #{item.areaId} from dual
        </foreach>
    </insert>

上面的批量插入报错

在执行SQL时MyBatis会自动通过对象中的属性给SQL中参数赋值，它会自动将Java类型转换成数据库的类型。

而一旦传入的是null它就无法准确判断这个类型应该是什么，就有可能将类型转换错误，从而报错。

jdbcType了解一下啊,参考jdbcType网址

Mybatis	JdbcType	Oracle	MySql
JdbcType	ARRAY
JdbcType	BIGINT		BIGINT
JdbcType	BINARY
JdbcType	BIT	BIT
JdbcType	BLOB	BLOB	BLOB
JdbcType	BOOLEAN
JdbcType	CHAR	CHAR	CHAR
JdbcType	CLOB	CLOB	CLOB
JdbcType	CURSOR
JdbcType	DATE	DATE	DATE
JdbcType	DECIMAL	DECIMAL	DECIMAL
JdbcType	DOUBLE	NUMBER	DOUBLE
JdbcType	FLOAT	FLOAT	FLOAT
JdbcType	INTEGER	INTEGER	INTEGER
JdbcType	LONGVARBINARY
JdbcType	LONGVARCHAR	LONG	VARCHAR
JdbcType	NCHAR	NCHAR
JdbcType	NCLOB	NCLOB
JdbcType	NULL
JdbcType	NUMERIC	NUMERIC/NUMBER	NUMERIC
JdbcType	NVARCHAR
JdbcType	OTHER
JdbcType	REAL	REAL	REAL
JdbcType	SMALLINT	SMALLINT	SMALLINT
JdbcType	STRUCT
JdbcType	TIME	TIME
JdbcType	TIMESTAMP	TIMESTAMP	TIMESTAMP/DATETIME
JdbcType	TINYINT	TINYINT
JdbcType	UNDEFINED
JdbcType	VARBINARY
JdbcType	VARCHAR	VARCHAR	VARCHAR

因此修改一下xml

看数据表字段类型改

xml 复制代码

    <insert id="insertBatch">
        insert into T_INVENTORY_AUTH_HIS (HIS_OPER_ID, HIS_OPER_DATE, HIS_OPER_TYPE, AUTH_ID, INVENTORY_ID, USER_ID, AUTH_TYPE, AREA_ID)
        <foreach collection="inventoryAuthHisList" item="item" open="(" separator=" union all " close=")">
            select #{item.hisOperId}, #{item.hisOperDate}, #{item.hisOperType}, #{item.authId}, #{item.inventoryId}, #{item.userId}, #{item.authType}, #{item.areaId,jdbcType=DOUBLE} from dual
        </foreach>
    </insert>