Springboot+QueryDsl实现融合数据查询
更新时间:2023年08月25日 09:48:07 作者:天道酬勤的博客
这篇文章主要将介绍的是 Springboot 使用 QueryDsl 实现融合数据查询,文中有详细的代码讲解,对 SpringBoot Querydsl 查询操作感兴趣的朋友一起看看吧
Springboot+QueryDsl技术
1、添加依赖
<!--基于JPA--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency> <!--QueryDSL支持--> <dependency> <groupId>com.querydsl</groupId> <artifactId>querydsl-apt</artifactId> <scope>provided</scope> </dependency> <!--QueryDSL支持--> <dependency> <groupId>com.querydsl</groupId> <artifactId>querydsl-jpa</artifactId> </dependency>
2、添加配置
@Configuration public class PeopleQueryConfig { @Bean public JPAQueryFactory jpaQuery(EntityManager entityManager) { return new JPAQueryFactory(entityManager); } }
3、添加实体类
@Data @Entity @Table(name = "t_msg_log") public class MsgLog extends PkUUID implements Serializable { private static final long serialVersionUID = -1479947068453421077L; @Column(name = "mobile", length = 16) private String mobile; @Column(name = "openid", length = 64) private String openid; @Column(name = "tsrname", length = 64) private String tsrname; @Column(name = "msg_direction", length = 2) @Convert(converter = MsgDirectionConverter.class) private MsgDirection msgDirection; @Column(name = "msg_type", length = 16) @Enumerated(EnumType.STRING) private MsgType msgType; @Column(name = "msg_channel", length = 2) @Convert(converter = MsgChannelConverter.class) private MsgChannel msgChannel; @Lob @Column(name = "msg_content") private String msgContent; @Column(name = "is_passive") private Boolean isPassive; @Column(name = "status", length = 2) @Convert(converter = MsgStatusConverter.class) private MsgStatus status; @Column(name = "send_time") private Date sendTime; @Column(name = "schedule_flag", length = 2) @Convert(converter = ScheduleFlagConverter.class) private ScheduleFlag scheduleFlag; @Column(name = "src_msg_id") private String srcMsgId; /** * enum */ public enum MsgType { text, image, video, voice, news, link, template, location } @RequiredArgsConstructor public enum MsgDirection implements ValuedEnum<String> { User2Agent("0"), Agent2User("1"); @Getter private final String value; } @RequiredArgsConstructor public enum MsgChannel implements ValuedEnum<String> { SMS("0"), WECHAT("1"); @Getter private final String value; } @RequiredArgsConstructor public enum MsgStatus implements ValuedEnum<String> { Success("1"), Failure("-1"); @Getter private final String value; } @RequiredArgsConstructor public enum ScheduleFlag implements ValuedEnum<String> { ScheduledMsg("0"), InstantMsg("1"); @Getter private final String value; } }
4、JPA-DAO类
DAO 类继承QueryDslPredicateExecutor
@Repository public interface MsgLogRepository extends JpaRepository<MsgLog,String>,QueryDslPredicateExecutor<MsgLog>{ }
5、Controller
@RestController @RequestMapping("/msgLog/") public class MsgLogController { private static final Logger LOGGER = LoggerFactory.getLogger(MsgLogController.class); @Autowired private MsgLogRepository msgLogRepository; /** * 根据条件查询回话内容 * @param predicate * @return */ @RequestMapping(value = "list") public List<MsgLogResp> list(@QuerydslPredicate(root = MsgLog.class) Predicate predicate){ Iterable<MsgLog> msgLogs = msgLogRepository.findAll(predicate); LOGGER.info("msgLogs = "+ JsonUtil.toJson(msgLogs)); List<MsgLog> msgLogList = new ArrayList<>(); msgLogs.forEach((MsgLog msgLog)-> msgLogList.add(msgLog)); return msgLogList.stream().map(new Function<MsgLog, MsgLogResp>() { @Nullable @Override public MsgLogResp apply(@Nullable MsgLog msgLog) { return new MsgLogResp(msgLog); } }).collect(Collectors.toList()); } }
到此这篇关于Springboot+QueryDsl实现融合数据查询的文章就介绍到这了,更多相关Springboot QueryDsl数据查询内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家!
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