广告投放系统启动主类说明
/**
* SponsorApplication for 广告赞助商/投递服务启动类
* 添加注解{@link EnableFeignClients}之后,当前微服务就可以调用别的微服务,
* 但是当前服务是广告提供,不需要调用别的微服务,在此只是为了在dashboard中监控
* {@link EnableCircuitBreaker} 也是为了dashboard监控
*
* @author <a href="mailto:magicianisaac@gmail.com">Isaac.Zhang</a>
* @since 2019/6/15
*/
@EnableDiscoveryClient //开启服务发现Eureka Client
@EnableCircuitBreaker //开启断路器
@EnableFeignClients //开启feign client,使其可以通过HTTP调用其他微服务
@SpringBootApplication
public class SponsorApplication {
public static void main(String[] args) {
SpringApplication.run(SponsorApplication.class, args);
}
}
配置信息
server:
port: 7000
servlet:
context-path: /ad-sponsor #http请求的根路径(请求前缀,在handle的mapping之前,需要127.0.0.1/ad-sponsor/XXXX)
spring:
application:
name: mscx-ad-sponsor
jpa:
show-sql: true #执行时是否打印sql语句,方便调试
hibernate:
ddl-auto: none
properties:
hibernate.format_sql: true
open-in-view: false #控制是否在懒加载时,有可能会找不到bean报错
datasource:
username: ***
url: jdbc:mysql://127.0.0.1:3306/advertisement?useSSL=false&autoReconnect=true
password: ***
tomcat:
max-active: 4 #最大连接数
min-idle: 2 #最小空闲连接数
initial-size: 2 #默认初始化连接数
eureka:
client:
service-url:
defaultZone: http://server1:7777/eureka/,http://server2:8888/eureka/,http://server3:9999/eureka/
创建实体对象
实体类和数据库表一般是一一对应,通常称之为entity
,以用户表为例:Lombok传送门
/**
* AdUser for 数据库ad_user表对应的实体类
* {@link Basic} 标示为数据库的字段信息,如果需要一个不属于数据库的字段,标注为 {@link Transient}
*
* @author <a href="mailto:magicianisaac@gmail.com">Isaac.Zhang</a>
* @since 2019/6/15
*/
@Data
@AllArgsConstructor
@NoArgsConstructor
@Entity
@Table(name = "ad_user")
public class AdUser {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "user_id", nullable = false)
private Long userId;
@Basic //不写的话,默认就是@Basic,表示是数据库表的一个字段
//@Transient //如果打上@Transient 注解,表明当前字段不是表中的字段
@Column(name = "user_name", nullable = false)
private String userName;
@Basic
@Column(name = "token", nullable = false)
private String token;
@Basic
@Column(name = "user_status", nullable = false)
private Integer userStatus;
@Basic
@Column(name = "create_time", nullable = false)
private Date createTime;
@Basic
@Column(name = "update_time", nullable = false)
private Date updateTime;
/**
* 创建用户时所需的必填字段
*
* @param user_name 用户名称
* @param token token
*/
public AdUser(String user_name, String token) {
this.userName = user_name;
this.token = token;
this.userStatus = CommonStatus.VALID.getStatus();
this.createTime = new Date();
this.updateTime = this.createTime;
}
}
---
/**
* CommonStatus for 通用状态枚举
*
* @author <a href="mailto:magicianisaac@gmail.com">Isaac.Zhang</a>
*/
@Getter
public enum CommonStatus {
VALID(1, "有效"),
INVALID(0, "无效状态");
private Integer status;
private String desc;
CommonStatus(Integer status, String desc) {
this.status = status;
this.desc = desc;
}
}
其他的数据库对应实体类(AdUnit
,AdPlan
,AdCreative
,AdUnitDistrict
,AdUnitHobby
,AdUnitKeyword
,RelationshipCreativeUnit
),大家可以参考上面的例子自己实现,也可以去github上下载源码。