MySQL异常 # SQLException: sql injection violation, part alway true condition not allow

1.异常现象

Caused by: java.sql.SQLException: sql injection violation, part alway true condition not allow

翻译一下为：sql 注入问题，部分条件一直为 true，这种情况不被允许。

nested exception is java.sql.SQLException: sql injection violation, part alway true condition not allow : SELECT
                 id
                ... 省略 ...
                , is_deleted
                , date_format(create_time, '%Y-%m-%d %H:%i:%s') create_time
                , create_user
                , date_format(update_time, '%Y-%m-%d %H:%i:%s') update_time
                , update_user
                FROM
                t_table_name
                WHERE
                        1 = 1
                                AND provence_id = ?
                                AND user_id = ?
                 OR
                        1 = 1
                                AND provence_id = ?
                                AND user_id = ?
                 OR
                        1 = 1
                                AND provence_id = ?
                                AND user_id = ?
                 OR
                        1 = 1
                                AND provence_id = ?
                                AND user_id = ?
                 OR
                        1 = 1
                                AND provence_id = ?
                                AND user_id = ?
                ORDER BY id ASC
        at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:84) ~[spring-jdbc-4.1.4.RELEASE.jar:4.1.4.RELEASE]
        at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:81) ~[spring-jdbc-4.1.4.RELEASE.jar:4.1.4.RELEASE]
        at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:81) ~[spring-jdbc-4.1.4.RELEASE.jar:4.1.4.RELEASE]
        at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:71) ~[mybatis-spring-1.2.0.jar:1.2.0]
        at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:364) ~[mybatis-spring-1.2.0.jar:1.2.0]
        at com.sun.proxy.$Proxy37.selectList(Unknown Source) ~[?:?]
        at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:194) ~[mybatis-spring-1.2.0.jar:1.2.0]
        at org.apache.ibatis.binding.MapperMethod.executeForMany(MapperMethod.java:122) ~[mybatis-3.3.1.jar:3.3.1]
        at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:64) ~[mybatis-3.3.1.jar:3.3.1]
        at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:53) ~[mybatis-3.3.1.jar:3.3.1]
        at com.sun.proxy.$Proxy93.queryDepartmentUserList(Unknown Source) ~[?:?]
        at ......
        at ......
        at ......
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [?:1.7.0_79]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [?:1.7.0_79]
        at java.lang.Thread.run(Thread.java:745) [?:1.7.0_79]
Caused by: java.sql.SQLException: sql injection violation, part alway true condition not allow : SELECT

2.排查分析

用的是 mybatis 框架作为查询框架，一直报如上的错误。
SQL 写作失误，不小心在 WHERE 条件中重复置入了 1 = 1 这样的永真条件。

3.解决方案

当删除了 OR 1 = 1 之后，就正常了。这里违反了SQL 禁止永真条件 规则。