mybatis 如何拦截空 where 条件的 sql - V2EX
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duanzs
V2EX    MySQL

mybatis 如何拦截空 where 条件的 sql

  •  1
     
  •   duanzs Dec 21, 2020 4612 views
    This topic created in 1952 days ago, the information mentioned may be changed or developed.

    最近线上出了个事故,一个极端数据跑了个 sql,没有 where 条件,导致全表更新(泪啊) 我记得 mybatis 可以弄个拦截器,具体怎么搞呢

    21 replies    2020-12-22 14:06:21 +08:00
    kiracyan
        1
    kiracyan  
       Dec 21, 2020
    还有这种操作
    anzu
        2
    anzu  
       Dec 21, 2020
    不要用<where>标签
    kran
        3
    kran  
       Dec 21, 2020 via Android
    Acebiu
        4
    Acebiu  
       Dec 21, 2020
    duanzs
        5
    duanzs  
    OP
       Dec 21, 2020
    @anzu 这个还是要靠人来控制

    @kran 没用这个
    qwerthhusn
        6
    qwerthhusn  
       Dec 21, 2020
    测试背锅
    taogen data-uid=
        7
    taogen  
       Dec 21, 2020 via Android
    和 rm -rf / 问题类似,这种问题确实需要拦截
    FieldFarmer
        8
    FieldFarmer  
       Dec 21, 2020 via Android
    直接来个 where,不要<where>,这样没条件就会报错了
    Cbdy
        9
    Cbdy  
       Dec 21, 2020 via Android
    让 dba 把 sql_safe_updates 设置成 1
    moyixuan
        10
    moyixuan  
       Dec 21, 2020
    后面写个 where 1=1 ,这样没有传条件应该也不起效果吧
    FieldFarmer
        11
    FieldFarmer  
       Dec 21, 2020 via Android
    @moyixuan 这样没用的,没条件该全表更新还是全表更新了
    leeg810312
        12
    leeg810312  
       Dec 21, 2020 via Android
    生产库执行 sql 我们都是要审核才能执行,且开发不能直接碰生产库,随便执行 sql 还是太随意了
    vvvVictoria
        13
    vvvVictoria  
       Dec 21, 2020
    没测试?
    wellsc
        14
    wellsc  
       Dec 21, 2020 via iPhone
    Ci 都跑不过吧
    opengps
        15
    opengps  
       Dec 21, 2020
    为啥会没有条件呢?更新时候不得强制指定 where 条件吗?
    opengps
        16
    opengps  
       Dec 21, 2020
    想起来个事,以前配置的时候有个极端,如果入参集合为空,where 里的 id in ( ) 不生效。最终是全员自检排查 dao 层代码,增加程序拦截
    lraining
        17
    lraining  
       Dec 21, 2020
    只有 select 可以用<where>,update,delete 全部用 where
    daxiguaya
        18
    daxiguaya  
       Dec 21, 2020
    写个拦截器,用 jsqlparser 解析 SQL,剩下的想怎么限制都行.
    duanzs
        19
    duanzs  
    OP
       Dec 22, 2020
    @opengps 我们就是这个问题
    opengps
        20
    opengps  
       Dec 22, 2020
    @duanzs 如果不从程序 dao 层处理,那就得把 where 强制要求写上个 where 1=2 or (真实条件)
    Masonnn
        21
    Masonnn  
       Dec 22, 2020
    <if test="param != null">
    xxxxxx
    </if>
    这样?
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