单元测试如下

 @Test
    public void insertByMap() {
        Map<String,Object> map=new HashMap<>();
        map.put("category_name","我的最爱");
        map.put("category_type",101);
        int result=mapper.insertByMap(map);
        Assert.assertEquals(1,result);
    }

报错了，感觉没问题呀

org.springframework.dao.DataIntegrityViolationException:

Error updating database. Cause: java.sql.SQLIntegrityConstraintViolationException: Column ‘category_name’ cannot be null

The error may involve com.imooc.dataobject.mapper.ProductCategoryMapper.insertByMap-Inline

The error occurred while setting parameters

SQL: insert into product_category(category_name, category_type) values (?, ?)

Cause: java.sql.SQLIntegrityConstraintViolationException: Column ‘category_name’ cannot be null

; Column ‘category_name’ cannot be null; nested exception is java.sql.SQLIntegrityConstraintViolationException: Column ‘category_name’ cannot be null