SQL错误：1064，SQLState：@Query中的42000-JPA，MySQL，Hibernate

问题描述

我正在使用JPA Query for MysqL数据库。我正在传递字符串日期

http：// localhost：8081 / stat / visits / 2020-07-29

为PathVariable-但在查询的JPA存储库中出现错误： 我正在使用Java8 LocalDateTime和参数LocalDate。绑定有问题。这是我的课程，下面是错误：

控制器

    @GetMapping("/visits/{dateParam}")
    public ResponseEntity<List<WebsiteDailyTotal>> getDailyTotalUsage(@PathVariable("dateParam") String dateParam) {

        LocalDate ld = LocalDate.parse(dateParam.subSequence(0,dateParam.length()));
        LOGGER.info("ld: {}",ld.toString());

        List<WebsiteDailyTotal> websitetotalUsage = service.getDomainTotal2(ld);
        return  new ResponseEntity<List<WebsiteDailyTotal>>(websitetotalUsage,new HttpHeaders(),HttpStatus.OK);
    }

JPA存储库：

        public interface TotalDomainRepository2 extends JpaRepository<SuperStatEntityTime,Long> {
        @Query("SELECT new com.proctorio.webtracker.entity.WebsiteDailyTotal(c.domain,SUM(c.duration)) FROM SuperStatEntityTime AS c WHERE c.start.toLocalDate() = :localDate GROUP BY c.domain ORDER BY c.domain ASC")
        public List<WebsiteDailyTotal> countTotalDomainUsageByDay2(@Param("localDate") LocalDate localDate);
    }

实体类：

    @Entity
    @Table(name = "super_stat2")
    public class SuperStatEntityTime {
    
        @Id
        @GeneratedValue(strategy = GenerationType.IDENTITY)
        private Long id;
    
        @Column
        private String uuid;
    
        @Column
        private String domain;
    
        @Column(name = "start",columnDeFinition = "TIMESTAMP")
        private LocalDateTime start;
    
        @Column(name = "end",columnDeFinition = "TIMESTAMP")
        private LocalDateTime end;
    
        @Column
        private Long duration;

数据库表：

  CREATE TABLE `super_stat2` (
      `id` bigint NOT NULL AUTO_INCREMENT,`domain` varchar(255) DEFAULT NULL,`start` datetime DEFAULT '0000-00-00 00:00:00',`end` datetime DEFAULT '0000-00-00 00:00:00',`duration` bigint DEFAULT '0',`uuid` varchar(255) DEFAULT NULL,PRIMARY KEY (`id`)
    ) 

结果类：

public class WebsiteDailyTotal {
    
    private String domainUrl;
    private Long totalTime;
    
    public WebsiteDailyTotal() {
    }
    
    public WebsiteDailyTotal(String domainUrl,Long totalTime) {
        this.domainUrl = domainUrl;
        this.totalTime = totalTime;
    }

有错误：

    Hibernate: 
        select
            superstate0_.domain as col_0_0_,sum(superstate0_.duration) as col_1_0_ 
        from
            super_stat2 superstate0_ 
        where
            c.start.toLocalDate()=? 
        group by
            superstate0_.domain 
        order by
            superstate0_.domain ASC
    
    
     o.h.type.descriptor.sql.BasicBinder      : binding parameter [1] as [DATE] - [2020-07-29]
    o.h.engine.jdbc.spi.sqlExceptionHelper   : sql Error: 1064,sqlState: 42000

是语法错误。没有where子句的查询将成功。请在这件事上给予我帮助。谢谢

解决方法

您不能直接在JPQL中使用toLocalDate()。一种更简单的方法来修复localdate的这一天的开始和结束时间，并在使用它们进行查询之间进行。

LocalDateTime startOfDay = localDate.atTime(LocalTime.MIN);
LocalDateTime endOfDay = localDate.atTime(LocalTime.MAX);

并像c.start between BETWEEN :startOfDay AND :endOfDay

这样查询

@Query("SELECT new com.proctorio.webtracker.entity.WebsiteDailyTotal(c.domain,SUM(c.duration)) " 
       +"FROM SuperStatEntityTime AS c WHERE c.start between BETWEEN :startOfDay AND :endOfDay GROUP BY c.domain ORDER BY c.domain ASC")
public List<WebsiteDailyTotal> countTotalDomainUsageByDay2(@Param("startOfDay") LocalDateTime startOfDay,@Param("endOfDay") LocalDateTime endOfDay);