Spring Boot骚操作-多数据源Service层封装

mysql, es, mongodb 三个数据源用配置文件方式连接，JPA只是正对dao做了封装，本文主要介绍如何对service层进行封装。

• Spring Boot - 多个数据源Service层封装

• 类关系图

• 封装的一些配置

  • application.yml

  • pom.xml

• 封装后使用

  • MySQL 动态数据访问

• Mongo 动态数据访问

• ElasticSearch 动态数据访问(单个index+type)

• ElasticSearch 动态数据访问(多个index+type)

• 源代码托管

类关系图

• 对多个数据源连接获取数据进行统一封装

• ES spring-data方式不支持多个Index和Type的查找功能，添加了DynamicESDao支持

• 大大简化封装之后的调用, 调用方式如下

封装的一些配置

application.yml

1. banner:

2. charset: UTF-8

3. location: classpath:banner.txt

4. server:

5. port: 5555

6. contextPath: /

7. session:

8. timeout: 0

9. spring:

10. application:

11. name: 'spring-boot-datasource-demo'

12. output:

13. ansi:

14. enabled: DETECT

15. messages:

16. basename: i18n/messages

17. thymeleaf:

18. cache: false

19. profiles:

20. active: dev

22. # MySQL data source settings

23. datasource:

24. url: jdbc:mysql://localhost:3306/cdc_standalone?useSSL=false

25. username: root

26. password: bfXa4Pt2lUUScy8jakXf

27. # MySQL JPA settings

28. jpa:

29. generate-ddl: true

30. show-sql: true

31. properties:

32. hibernate:

33. dialect: org.hibernate.dialect.MySQLDialect

34. format_sql: true

35. # NoSQL data source settings

36. data:

37. # MongoDB 2.2+ settings

38. mongodb:

39. uri: mongodb://standalone:[email protected]:27017/standalone

40. # ElasticSearch settings

41. elasticsearch:

42. cluster-name: es-logs-01

43. cluster-nodes: 10.11.60.5:9300

pom.xml

2. xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

3. 4.0.0

4. spring-boot-datasource-demo

5. spring-boot-datasource-demo

6. 0.0.1-SNAPSHOT

7. spring-boot-datasource-demo

8. spring-boot-datasource-demo

11. org.springframework.boot

12. spring-boot-starter-parent

13. 1.4.1.RELEASE

17. UTF-8

18. UTF-8

19. 1.8

20. 3.3.2

21. 2.7.0

26. org.springframework.boot

27. spring-boot-starter

30. org.springframework.boot

31. spring-boot-starter-data-mongodb

34. org.springframework.boot

35. spring-boot-starter-data-elasticsearch

38. org.springframework.boot

39. spring-boot-starter-data-jpa

42. mysql

43. mysql-connector-java

44. runtime

47. org.springframework.boot

48. spring-boot-starter-web

52. io.springfox

53. springfox-swagger2

54. ${springfox.version}

57. io.springfox

58. springfox-swagger-ui

59. ${springfox.version}

63. com.alibaba

64. fastjson

65. 1.2.15

68. org.apache.commons

69. commons-lang3

70. ${commons.lang.version}

73. org.apache.commons

74. commons-collections4

75. 4.1

79. com.github.wenhao

80. jpa-spec

81. 3.2.3

87. src

90. maven-compiler-plugin

92. 1.8

93. 1.8

封装后使用

封装之后使用将非常简单，公共的Service行为将被封装处理

MySQL 动态数据访问

通过几行代码即可实现对MySQL的访问，同时支持动态的条件查询；

• User

1. @Entity

2. @Table(name = "tb_user")

3. public class User extends BaseEntity {

5. private static final long serialVersionUID = 1L;

7. /**

8. * 用户id

9. */

10. @Id

11. @GeneratedValue(strategy = GenerationType.AUTO)

12. @Column(name = "id", nullable = false)

13. private Integer id;

14. private String userName;

15. private String nickName;

16. private String password;

17. private Integer sex;

18. private String telephone;

19. private String email;

20. private String address;

21. private Integer deleteStatus;

22. private Integer locked = 0;

23. private String description;

25. @JSONField(format = "yyyy-MM-dd HH:mm:ss")

26. private Date createTime;

27. @JSONField(format = "yyyy-MM-dd HH:mm:ss")

28. private Date updateTime;

30. @ManyToMany(cascade = { CascadeType.REFRESH }, fetch = FetchType.LAZY)

31. @JoinTable(name = "tb_user_role", joinColumns = { @JoinColumn(name = "user_id") }, inverseJoinColumns = {

32. @JoinColumn(name = "role_id") })

33. private java.util.Set roles;

35. // getter & setter

36. }

• Dao

1. @Repository

2. public interface IUserDao extends IBaseJpaDao{

3. }

• Service

1. public interface IUserService extends IBaseJpaService {

2. }

3. @Service

4. public class UserServiceImpl extends BaseJpaServiceImpl implements IUserService {

5. @Autowired

6. private IUserDao userDao;

7. @Override

8. public IBaseJpaDao getBaseDao() {

9. return this.userDao;

10. }

11. @Override

12. public void delete(Integer id) {

13. User user = find(id);

14. Assert.state(!"admin".equals(user.getUserName()), "超级管理员用户不能删除");

15. super.delete(id);

16. }

17. }

• Controller

1. @RestController

2. @RequestMapping("/admin/user")

3. public class UserController {

5. /**

6. * user service

7. */

8. @Autowired

9. private IUserService userService;

11. /**

12. * @param searchText

13. * @param user

14. * @param model

15. * @return

16. */

17. @GetMapping(value = "/list")

18. public List list(@RequestParam(value = "searchText", required = false, defaultValue="a") String searchText) {

19. return userService.findAll(Specifications.and().like("userName", "%" + searchText + "%").build());

20. }

21. }

Mongo 动态数据访问

通过几行代码即可实现对Mongo的访问，同时支持动态的条件查询；

• Entity

1. @Document(collection = "security_alert_rules")

2. public class EventRule extends BaseEntity {

4. private static final long serialVersionUID = -2013673868028645757L;

6. public static final int EVENT_STATUS_ENABLE = 0, EVENT_STATUS_DISABLE = 1;

8. private String component;

9. private String name;

10. private String eventId;

11. private String ciaLevel;

12. private String remarks;

13. private String script;

14. private long threshold;

15. private long timeWindow;

16. private String parseEsResultKeys;

17. private String nameCN;

18. private String remarkCN;

19. private String ruleType;

20. private String redisEventKey;

21. private int status = EVENT_STATUS_ENABLE;

23. // getter & setter

24. }

• Dao

1. @Repository

2. public interface IEventRuleDao extends IBaseMongoDao {

3. }

• Service

1. public interface IEventRuleService extends IBaseMongoService {

2. }

3. @Service

4. public class EventRuleServiceImpl extends BaseMongoServiceImpl implements IEventRuleService {

5. @Autowired

6. IEventRuleDao eventRuleDao;

7. @Override

8. public IBaseMongoDao getBaseDao() {

9. return eventRuleDao;

10. }

11. }

• Controller

1. @RestController

2. @RequestMapping("/admin/eventRule")

3. public class EventRuleController {

5. /**

6. */

7. @Autowired

8. private IEventRuleService eventRuleService;

10. /**

11. * @param searchText

12. * @param user

13. * @param model

14. * @return

15. */

16. @GetMapping(value = "/list")

17. public List list(@RequestParam(value = "searchText", required = false) String searchText) {

18. EventRule param = new EventRule();

19. param.setName(searchText);

20. // Example rule = Example.of(param,

21. // ExampleMatcher.matching().withMatcher("name", ExampleMatcher.GenericPropertyMatchers.exact()));

22. Example rule = Example.of(param, ExampleMatcher.matching().withIgnoreCase("name","nameCN"));

23. return eventRuleService.findAll(rule);

24. }

25. }

ElasticSearch 动态数据访问(单个index+type)

通过几行代码即可实现对ElasticSearch的访问，同时支持动态的条件查询；适合数据类型比较固定，且index和type独立的，比如强类型映射的实体类；

• Entity

1. @Document(indexName="syslog", type="logs")

2. public class SysLog extends BaseEntity {

4. private static final long serialVersionUID = -4491916941883088972L;

6. @Id

7. private String _id;

9. private Set phyPorts = new LinkedHashSet<>();

11. private Set ports = new LinkedHashSet<>();

12. private String sensor;

13. private int vlan;

14. private Set ip = new LinkedHashSet<>();

15. private Set mac = new LinkedHashSet<>();

16. private String description;

17. private String type;

18. private String vendor;

19. private long timestamp;

20. private String name;

21. private String chassisId;

23. // getter & setter

25. }

• Dao

1. @Repository

2. public interface ISysLogDao extends IBaseESDao {

3. }

• Service

1. public interface ILogService extends IBaseESService {

2. }

3. @Service

4. public class LogServiceImpl extends BaseESServiceImpl implements ILogService {

5. @Autowired

6. ISysLogDao sysLogDao;

7. @Override

8. public IBaseESDao getBaseDao() {

9. return sysLogDao;

10. }

11. }

• Controller

1. @RestController

2. @RequestMapping("/admin/log")

3. public class LogController {

4. /**

5. * user service

6. */

7. @Autowired

8. private ILogService logService;

10. /**

11. * @param searchText

12. * @param user

13. * @param model

14. * @return

15. */

16. @GetMapping(value = "/list")

17. public Page list(@RequestParam(value = "searchText", required = false) String searchText) {

18. return logService.search(QueryBuilders.matchQuery("_all", searchText), new PageRequest(0, 100));

19. }

20. }

ElasticSearch 动态数据访问(多个index+type)

通过几行代码即可实现对ElasticSearch的访问，同时支持动态的条件查询；适合数据类型不固定，且index和type有多个，这些index具备相同结构类型，比如syslog-EVERY-DATE(由于日志量大，将每天的日志单独存放在一个Index中)；

• Entity

1. @Document(indexName="syslog", type="logs")

2. public class SysLog extends BaseEntity {

4. private static final long serialVersionUID = -4491916941883088972L;

6. @Id

7. private String _id;

9. private Set phyPorts = new LinkedHashSet<>();

11. private Set ports = new LinkedHashSet<>();

12. private String sensor;

13. private int vlan;

14. private Set ip = new LinkedHashSet<>();

15. private Set mac = new LinkedHashSet<>();

16. private String description;

17. private String type;

18. private String vendor;

19. private long timestamp;

20. private String name;

21. private String chassisId;

23. // getter & setter

25. }

• Dao

1. public interface IDymLogDao extends IDynamicEsDao {

2. }

3. @Repository

4. public class DymLogDaoImpl extends SimpleDynamicEsDaoImpl implements IDymLogDao {

5. @Autowired

6. protected ElasticsearchTemplate elasticsearchTemplate;

7. @Override

8. public ElasticsearchOperations getElasticsearchOperations() {

9. return elasticsearchTemplate;

10. }

11. }

• Service

1. public interface IDymLogService extends IDynamicESService {

2. }

3. @Service

4. public class DymLogServiceImpl extends DynamicESServiceImpl implements IDymLogService {

5. @Autowired

6. IDymLogDao sysLogDao;

7. @Override

8. public IDynamicEsDao getBaseDao() {

9. return sysLogDao;

10. }

11. }

• Controller

1. @RestController

2. @RequestMapping("/admin/dymLog")

3. public class DymLogController {

5. /**

6. * logService

7. */

8. @Autowired

9. private IDymLogService logService;

11. /**

12. * @param searchText

13. * @param user

14. * @param model

15. * @return

16. */

17. @GetMapping(value = "/list")

18. public Page list(

19. @RequestParam(value = "searchText", required = false, defaultValue = "Siemens") String searchText) {

20. QueryBuilder queryBuilder = QueryBuilders.matchQuery("vendor", searchText);

21. return logService.search(new NativeSearchQueryBuilder().withIndices("syslog-2018-12-17").withTypes("logs")

22. .withQuery(queryBuilder).build());

23. }

24. }

源代码托管

https://github.com/realpdai/springboot-data-multidatasource-demo