/**
* 方法名称规则查询：
* findBy开头： 代表查询
* + 对象中属性名称（首字母大写）--查询的条件
* 默认情况使用 等于 的方式进行查询
* findByCustName --根据用户名称进行查询
* findBy + 属性名 （根据属性名匹配完成查询=）
* findBy + 属性名 + “查询方式（like | isnull）”
* findByCustNameLike
* 多条件查询： findBy + 属性名 + “查询方式” + “多条件的连接符（and|or）” + 属性名 + “查询方式”
*/
public Customer findByCustName(String name);
public List<Customer> findByCustNameLike(String name);
//使用客户名称模糊匹配和客户所属行业精准匹配的查询
public Customer findByCustNameLikeAndCustIndustry(String name,String industry);
更多的关键字以及对应的jpql语句如下：
| Keyword | Sample | JPQL |
|---|---|---|
| And | findByLastnameAndFirstname | … where x.lastname = ?1 and x.firstname = ?2 |
| Or | findByLastnameOrFirstname | … where x.lastname = ?1 or x.firstname = ?2 |
| Is,Equals | findByFirstnameIs,findByFirstnameEquals | … where x.firstname = ?1 |
| Between | findByStartDateBetween | … where x.startDate between ?1 and ?2 |
| LessThan | findByAgeLessThan | … where x.age < ?1 |
| LessThanEqual | indByAgeLessThanEqual | … where x.age ⇐ ?1 |
| GreaterThan | findByAgeGreaterThan | … where x.age > ?1 |
| GreaterThanEqual | findByAgeGreaterThanEqual | … where x.age >= ?1 |
| After | findByStartDateAfter | … where x.startDate > ?1 |
| Before | findByStartDateBefore | … where x.startDate < ?1 |
| IsNull | findByAgeIsNull | … where x.age is null |
| IsNotNull,NotNull | findByAge(Is)NotNull | … where x.age not null |
| Like | findByFirstnameLike | … where x.firstname like ?1 |
| NotLike | findByFirstnameNotLike | … where x.firstname not like ?1 |
| StartingWith | findByFirstnameStartingWith | … where x.firstname like ?1 (parameter bound with appended %) |
| EndingWith | findByFirstnameEndingWith | … where x.firstname like ?1 (parameter bound with prepended %) |
| Containing | findByFirstnameContaining | … where x.firstname like ?1 (parameter bound wrapped in %) |
| OrderBy | findByAgeOrderByLastnameDesc | … where x.age = ?1 order by x.lastname desc |
| Not | findByLastnameNot | … where x.lastname <> ?1 |
| In | findByAgeIn(Collection ages) | … where x.age in ?1 |
| NotIn | findByAgeNotIn(Collection age) | … where x.age not in ?1 |
| TRUE | findByActiveTrue() | … where x.active = true |
| FALSE | findByActiveFalse() | … where x.active = false |
| IgnoreCase | ndByFirstnameIgnoreCase | … where UPPER(x.firstame) = UPPER(?1) |
