使用Java编程和springboot和mybatis框架,连接mysql数据库,给出具体程序,包含Controller层、Service层、Service实现类、Dao层以及Mapper.xml文件,统计本周第一天,本月第一天 ,本年第一天起到今天为止的中奖趋势接口 并对接口使用redis进行缓存处理 过期时间10分钟
时间: 2024-03-26 22:41:44 浏览: 98
毕业设计项目,使用Java语言、mysql数据库,使用springboot+shiro+mybaits框架搭建.zip
好的,这是一个比较复杂的问题,需要一步一步来实现。我会尽力回答你的问题,希望能够帮到你。
首先,我们需要创建一个Spring Boot项目,并且添加MyBatis和MySQL的依赖项。在pom.xml文件中添加以下代码:
```xml
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>2.1.1</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.26</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
</dependencies>
```
然后,我们需要在application.properties文件中添加以下内容,用于配置MySQL和Redis数据库的连接信息:
```properties
# MySQL配置信息
spring.datasource.url=jdbc:mysql://localhost:3306/db_name
spring.datasource.username=root
spring.datasource.password=password
# Redis配置信息
spring.redis.host=localhost
spring.redis.password=
spring.redis.port=6379
```
接下来,我们创建一个实体类,用于表示中奖记录:
```java
public class LotteryRecord {
private int id;
private String name;
private String prize;
private Date date;
// getters and setters
}
```
然后,我们创建一个Mapper接口和对应的Mapper XML文件,用于执行SQL语句:
```java
@Mapper
public interface LotteryRecordMapper {
@Select("SELECT * FROM lottery_record WHERE date >= #{startDate}")
List<LotteryRecord> getRecordsSinceDate(Date startDate);
}
```
```xml
<mapper namespace="com.example.demo.mapper.LotteryRecordMapper">
<select id="getRecordsSinceDate" resultType="com.example.demo.entity.LotteryRecord">
SELECT * FROM lottery_record WHERE date >= #{startDate}
</select>
</mapper>
```
接下来,我们创建一个Service接口和对应的实现类,用于调用Mapper接口:
```java
public interface LotteryRecordService {
List<LotteryRecord> getRecordsSinceDate(Date startDate);
}
@Service
public class LotteryRecordServiceImpl implements LotteryRecordService {
@Autowired
private LotteryRecordMapper lotteryRecordMapper;
@Override
public List<LotteryRecord> getRecordsSinceDate(Date startDate) {
return lotteryRecordMapper.getRecordsSinceDate(startDate);
}
}
```
最后,我们创建一个Controller类,用于处理HTTP请求,并且使用Redis进行缓存处理:
```java
@RestController
@RequestMapping("/lottery")
public class LotteryController {
@Autowired
private LotteryRecordService lotteryRecordService;
@Autowired
private StringRedisTemplate stringRedisTemplate;
@GetMapping("/trend")
public List<String> getTrend() {
// 获取本周第一天、本月第一天、本年第一天
Date now = new Date();
Date weekStartDate = getWeekStartDate(now);
Date monthStartDate = getMonthStartDate(now);
Date yearStartDate = getYearStartDate(now);
// 统计中奖记录
List<LotteryRecord> weekRecords = lotteryRecordService.getRecordsSinceDate(weekStartDate);
List<LotteryRecord> monthRecords = lotteryRecordService.getRecordsSinceDate(monthStartDate);
List<LotteryRecord> yearRecords = lotteryRecordService.getRecordsSinceDate(yearStartDate);
// 拼接结果
List<String> result = new ArrayList<>();
result.add("本周中奖数:" + weekRecords.size());
result.add("本月中奖数:" + monthRecords.size());
result.add("本年中奖数:" + yearRecords.size());
// 缓存结果
String cacheKey = "lottery:trend";
String cacheValue = String.join(",", result);
stringRedisTemplate.opsForValue().set(cacheKey, cacheValue, Duration.ofMinutes(10));
return result;
}
private Date getWeekStartDate(Date date) {
Calendar cal = Calendar.getInstance();
cal.setTime(date);
int dayOfWeek = cal.get(Calendar.DAY_OF_WEEK);
cal.add(Calendar.DAY_OF_WEEK, 1 - dayOfWeek);
return cal.getTime();
}
private Date getMonthStartDate(Date date) {
Calendar cal = Calendar.getInstance();
cal.setTime(date);
cal.set(Calendar.DAY_OF_MONTH, 1);
return cal.getTime();
}
private Date getYearStartDate(Date date) {
Calendar cal = Calendar.getInstance();
cal.setTime(date);
cal.set(Calendar.DAY_OF_YEAR, 1);
return cal.getTime();
}
}
```
以上就是整个项目的代码,你可以根据自己的需求进行修改。注意,这里使用了Redis进行缓存处理,需要在Redis中安装并启动一个Redis实例。
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