Mybitis模糊查询语句错误问题分析

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/wo_buzhidao/article/details/79549407

Mybitis模糊查询语句错误问题分析

• java代码为

List<Category> cs=session.selectList("listCategoryByName","新");
        for(Category c3:cs){
            System.out.println("新关键字查出的"+c.getName());
        }

• 错误1
  mybitis配置

<select id="listCategoryByName"    resultType="Category">
            select * from category_ t where t.name like concat('%',#{name},'%')
        </select>  

结果：报错ORA-00909: 参数个数无效
- 错误2

<select id="listCategoryByName"    resultType="Category">
            select * from category_ t where t.name like concat(concat("%",#{name}),"%")
        </select>  

结果，错误ORA-00904: “%”: 标识符无效

• 正确

    select * from category_ t where t.name like concat(concat('%',#{name}),'%')