解決方案：
@Component
public class MessageSet {
@Resource
private UploadToDBase uploadToDBase;
private static MessageSet messageset;
@PostConstruct //服務器加載時運行，只運行一次
public void init(){
messageset = this;
messageset.uploadToDBase = this.uploadToDBase;
}
//靜態方法
public static MailMessage Message(MailMessage mailMessage){
//調用示例
messageset.uploadToDBase.select().get("time");
}