Java 使用xml文件配置更新数据库数据发生java.lang.Integer cannot be cast to java.util.Collection错误
xml的配置(采用的是注解类型注入参数,所以没加parameterType)
<update id="updateAccountCollection" >
update app_account AS ac
<set>
<if test="display != null">
ac.display = #{display},
</if>
ac.collection = #{collection}
</set>
where ac.id = #{id}
</update>
其中display、collection两个字段在数据库的类型为tinyint(2),在实体类中两个字段的类型为Integer
mapper代码
//更新收藏、是否显示
void updateAccountCollection(@Param("display")int display,@Param("collection")int collection,@Param("id")Long id);
报错日志
org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException:
### Error updating database. Cause: java.lang.ClassCastException: java.lang.Integer cannot be cast to java.util.Collection
### The error may exist in class path resource [mapper/ResourceMapper.xml]
### The error may involve com.selfcare.mapper.ResourceMapper.updateAccountCollection
### The error occurred while executing an update
### Cause: java.lang.ClassCastException: java.lang.Integer cannot be cast to java.util.Collection
请问,这种报错该怎么解决啊?
知道是数据类型无法强制转换,但是我反找了一遍,也没找到是哪里用到了java.util.Collection这个类型