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初始化数据字典

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YunaiV
2021-09-27 09:47:37 +08:00
parent 15e2c0945d
commit 0439a5505a
13 changed files with 249 additions and 10 deletions
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7
yudao-user-server/src/main/java/cn/iocoder/yudao/userserver/UserServerApplication.java
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package cn.iocoder.yudao.userserver;
import cn.iocoder.yudao.framework.dict.config.YudaoDictAutoConfiguration;
import cn.iocoder.yudao.framework.security.config.YudaoSecurityAutoConfiguration;
import cn.iocoder.yudao.framework.security.config.YudaoWebSecurityConfigurerAdapter;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication(exclude = {
YudaoDictAutoConfiguration.class,
})
@SpringBootApplication
public class UserServerApplication {
public static void main(String[] args) {

20
yudao-user-server/src/main/java/cn/iocoder/yudao/userserver/modules/system/convert/dict/SysDictDataConvert.java Normal file
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package cn.iocoder.yudao.userserver.modules.system.convert.dict;
import cn.iocoder.yudao.framework.dict.core.dto.DictDataRespDTO;
import cn.iocoder.yudao.userserver.modules.system.dal.dataobject.dict.SysDictDataDO;
import org.mapstruct.Mapper;
import org.mapstruct.factory.Mappers;
import java.util.Collection;
import java.util.List;
@Mapper
public interface SysDictDataConvert {
SysDictDataConvert INSTANCE = Mappers.getMapper(SysDictDataConvert.class);
DictDataRespDTO convert02(SysDictDataDO bean);
List<DictDataRespDTO> convertList03(Collection<SysDictDataDO> list);
}

1
yudao-user-server/src/main/java/cn/iocoder/yudao/userserver/modules/system/convert/package-info.java Normal file
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package cn.iocoder.yudao.userserver.modules.system.convert;

54
yudao-user-server/src/main/java/cn/iocoder/yudao/userserver/modules/system/dal/dataobject/dict/SysDictDataDO.java Normal file
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package cn.iocoder.yudao.userserver.modules.system.dal.dataobject.dict;
import cn.iocoder.yudao.framework.common.enums.CommonStatusEnum;
import cn.iocoder.yudao.framework.mybatis.core.dataobject.BaseDO;
import com.baomidou.mybatisplus.annotation.TableId;
import com.baomidou.mybatisplus.annotation.TableName;
import lombok.Data;
import lombok.EqualsAndHashCode;
/**
* 字典数据表
*
* @author ruoyi
*/
@TableName("sys_dict_data")
@Data
@EqualsAndHashCode(callSuper = true)
public class SysDictDataDO extends BaseDO {
/**
* 字典数据编号
*/
@TableId
private Long id;
/**
* 字典排序
*/
private Integer sort;
/**
* 字典标签
*/
private String label;
/**
* 字典值
*/
private String value;
/**
* 字典类型
*
* 冗余 {@link SysDictDataDO#getDictType()}
*/
private String dictType;
/**
* 状态
*
* 枚举 {@link CommonStatusEnum}
*/
private Integer status;
/**
* 备注
*/
private String remark;
}

1
yudao-user-server/src/main/java/cn/iocoder/yudao/userserver/modules/system/dal/dataobject/package-info.java Normal file
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package cn.iocoder.yudao.userserver.modules.system.dal.dataobject;

28
yudao-user-server/src/main/java/cn/iocoder/yudao/userserver/modules/system/dal/mysql/dict/SysDictDataMapper.java Normal file
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package cn.iocoder.yudao.userserver.modules.system.dal.mysql.dict;
import cn.iocoder.yudao.framework.mybatis.core.mapper.BaseMapperX;
import cn.iocoder.yudao.userserver.modules.system.dal.dataobject.dict.SysDictDataDO;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import org.apache.ibatis.annotations.Mapper;
import java.util.Date;
@Mapper
public interface SysDictDataMapper extends BaseMapperX<SysDictDataDO> {
default SysDictDataDO selectByDictTypeAndValue(String dictType, String value) {
return selectOne(new QueryWrapper<SysDictDataDO>().eq("dict_type", dictType)
.eq("value", value));
}
default int selectCountByDictType(String dictType) {
return selectCount("dict_type", dictType);
}
default boolean selectExistsByUpdateTimeAfter(Date maxUpdateTime) {
return selectOne(new QueryWrapper<SysDictDataDO>().select("id")
.gt("update_time", maxUpdateTime).last("LIMIT 1")) != null;
}
}

1
yudao-user-server/src/main/java/cn/iocoder/yudao/userserver/modules/system/dal/mysql/package-info.java Normal file
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package cn.iocoder.yudao.userserver.modules.system.dal.mysql;

17
yudao-user-server/src/main/java/cn/iocoder/yudao/userserver/modules/system/dict/SysDictDataService.java Normal file
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package cn.iocoder.yudao.userserver.modules.system.dict;
import cn.iocoder.yudao.framework.dict.core.service.DictDataFrameworkService;
/**
* 字典数据 Service 接口
*
* @author ruoyi
*/
public interface SysDictDataService extends DictDataFrameworkService {
/**
* 初始化字典数据的本地缓存
*/
void initLocalCache();
}

122
yudao-user-server/src/main/java/cn/iocoder/yudao/userserver/modules/system/dict/impl/SysDictDataServiceImpl.java Normal file
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package cn.iocoder.yudao.userserver.modules.system.dict.impl;
import cn.hutool.core.collection.CollUtil;
import cn.iocoder.yudao.framework.dict.core.dto.DictDataRespDTO;
import cn.iocoder.yudao.framework.mybatis.core.dataobject.BaseDO;
import cn.iocoder.yudao.userserver.modules.system.convert.dict.SysDictDataConvert;
import cn.iocoder.yudao.userserver.modules.system.dal.dataobject.dict.SysDictDataDO;
import cn.iocoder.yudao.userserver.modules.system.dal.mysql.dict.SysDictDataMapper;
import cn.iocoder.yudao.userserver.modules.system.dict.SysDictDataService;
import com.google.common.collect.ImmutableTable;
import lombok.extern.slf4j.Slf4j;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Service;
import javax.annotation.PostConstruct;
import javax.annotation.Resource;
import java.util.Comparator;
import java.util.Date;
import java.util.List;
/**
* 字典数据 Service 实现类
*
* @author ruoyi
*/
@Service
@Slf4j
public class SysDictDataServiceImpl implements SysDictDataService {
/**
* 定时执行 {@link #schedulePeriodicRefresh()} 的周期
* 因为已经通过 Redis Pub/Sub 机制，所以频率不需要高
*/
private static final long SCHEDULER_PERIOD = 5 * 60 * 1000L;
/**
* 字典数据缓存，第二个 key 使用 label
*
* key1：字典类型 dictType
* key2：字典标签 label
*/
private ImmutableTable<String, String, SysDictDataDO> labelDictDataCache;
/**
* 字典数据缓存，第二个 key 使用 value
*
* key1：字典类型 dictType
* key2：字典值 value
*/
private ImmutableTable<String, String, SysDictDataDO> valueDictDataCache;
/**
* 缓存字典数据的最大更新时间，用于后续的增量轮询，判断是否有更新
*/
private volatile Date maxUpdateTime;
@Resource
private SysDictDataMapper dictDataMapper;
@Override
@PostConstruct
public synchronized void initLocalCache() {
// 获取字典数据列表，如果有更新
List<SysDictDataDO> dataList = this.loadDictDataIfUpdate(maxUpdateTime);
if (CollUtil.isEmpty(dataList)) {
return;
}
// 构建缓存
ImmutableTable.Builder<String, String, SysDictDataDO> labelDictDataBuilder = ImmutableTable.builder();
ImmutableTable.Builder<String, String, SysDictDataDO> valueDictDataBuilder = ImmutableTable.builder();
dataList.forEach(dictData -> {
labelDictDataBuilder.put(dictData.getDictType(), dictData.getLabel(), dictData);
valueDictDataBuilder.put(dictData.getDictType(), dictData.getValue(), dictData);
});
labelDictDataCache = labelDictDataBuilder.build();
valueDictDataCache = valueDictDataBuilder.build();
assert dataList.size() > 0; // 断言，避免告警
maxUpdateTime = dataList.stream().max(Comparator.comparing(BaseDO::getUpdateTime)).get().getUpdateTime();
log.info("[initLocalCache][缓存字典数据，数量为:{}]", dataList.size());
}
@Scheduled(fixedDelay = SCHEDULER_PERIOD, initialDelay = SCHEDULER_PERIOD)
public void schedulePeriodicRefresh() {
initLocalCache();
}
/**
* 如果字典数据发生变化，从数据库中获取最新的全量字典数据。
* 如果未发生变化，则返回空
*
* @param maxUpdateTime 当前字典数据的最大更新时间
* @return 字典数据列表
*/
private List<SysDictDataDO> loadDictDataIfUpdate(Date maxUpdateTime) {
// 第一步，判断是否要更新。
if (maxUpdateTime == null) { // 如果更新时间为空，说明 DB 一定有新数据
log.info("[loadDictDataIfUpdate][首次加载全量字典数据]");
} else { // 判断数据库中是否有更新的字典数据
if (!dictDataMapper.selectExistsByUpdateTimeAfter(maxUpdateTime)) {
return null;
}
log.info("[loadDictDataIfUpdate][增量加载全量字典数据]");
}
// 第二步，如果有更新，则从数据库加载所有字典数据
return dictDataMapper.selectList();
}
@Override
public DictDataRespDTO getDictDataFromCache(String type, String value) {
return SysDictDataConvert.INSTANCE.convert02(valueDictDataCache.get(type, value));
}
@Override
public DictDataRespDTO parseDictDataFromCache(String type, String label) {
return SysDictDataConvert.INSTANCE.convert02(labelDictDataCache.get(type, label));
}
@Override
public List<DictDataRespDTO> listDictDatasFromCache(String type) {
return SysDictDataConvert.INSTANCE.convertList03(labelDictDataCache.row(type).values());
}
}