Ryan-Miao opened a new issue #11318:
URL: https://github.com/apache/shardingsphere/issues/11318
## Question
I use standard table strantegy to sharding. My class implements
PreciseShardingAlgorithm, Cannot get anything from Spring context beacase of is
not the same class loader?
中文：
我自定义了分片策略，在实现的PreciseShardingAlgorithm调用Spring Context，调用静态类的静态成员变量，
都是空。我想要分片策略可以查询redis等其他介质货主分片， 但sharding加载的自定义策略不能获取其他静态对象。
```
public class SkuDbPreciseShardingAlgorithm implements
PreciseShardingAlgorithm<String> {
private static final Logger LOGGER =
LoggerFactory.getLogger(SkuDbPreciseShardingAlgorithm.class);
/**
* 分库分表
*
* @param dsNameList 可选db列表
* @param shardingValue 货主编码
* @return ds
*/
@Override
public String doSharding(Collection<String> dsNameList,
PreciseShardingValue<String> shardingValue) {
String companyCode = shardingValue.getValue();
// 这里获取的是null, 静态方法返回值null。 但我实际上在springboot启动后插入了路由
ShardingRoute route = SkuRouteRepository.getRouteMap(companyCode);
if (route != null) {
String dbName = route.getDbNo();
if (StringUtils.isNoneBlank(dbName) &&
dsNameList.contains(dbName)) {
return dbName;
}
}
LOGGER.error("没有找到配置的分片：{}", companyCode);
throw new UnsupportedOperationException();
}
}
```
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