使用spring框架後在靜態類中使用注入對象報錯

1：使用spring boot微服務時，想創建一個靜態util類供其他地方調用

2：使用@PostConstruct註解初始化注入對象，此註解在:當前類中只能使用一次，而且不能是static，只能返回void，不能允許有參數。

3：此方法執行是在依賴注入完成後執行。可使用靜態變量接收初始化的接口。

4：完整代碼如下：

package com.x3.bills.factory.utils;

import java.util.ArrayList;
import java.util.List;

import javax.annotation.PostConstruct;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import com.x3.b2b.sdk.entity.BillPrice;
import com.x3.b2b.sdk.entity.ParamBillPrice;
import com.x3.b2b.sdk.service.IB2BService;
import com.x3.base.core.exception.BusinessException;
import com.x3.base.core.util.DoubleUtil;
import com.x3.base.core.util.StringUtil;
import com.x3.bills.base.archives.biz.IclothingBiz;
import com.x3.bills.base.archives.biz.IparamBiz;
import com.x3.bills.base.archives.entity.ClothingInfoEntity;

@Component
public class SuppPriceUtil {
	
	private static IparamBiz curParamBiz;
	
	private static IB2BService curB2bService;
	
	private static IclothingBiz curClothingBiz;
	
	@Autowired
	private IparamBiz paramBiz;
	
	@Autowired
	private IB2BService b2bService;
	
	@Autowired
	private IclothingBiz clothingBiz;
	
	@PostConstruct
	private void Init(){
		curParamBiz=this.paramBiz;
		curB2bService=this.b2bService;
		curClothingBiz=this.clothingBiz;
	}
	
	/**
	 * 根據貨品、及收發地等信息獲取供應商結算價格 和系統參數1051有關
	 * @param clos 貨品集合
	 * @param set_depot_id 發貨地ID
	 * @param get_depot_id 收貨地ID
	 * @param sell_class_id 發貨類型，可爲空
	 * @return
	 */
	public static List<BillPrice> getSuppPrice(List<String> clos,String set_depot_id,String get_depot_id,String sell_class_id){
		//驗證參數
		if(clos==null || clos.size()==0){
			throw new BusinessException("SuppPriceUtil-getPrice-01", "獲取供應商價格失敗，參數clos至少包含一個元素！");
		}
		if(StringUtil.isBlankOrNull(set_depot_id)){
			throw new BusinessException("SuppPriceUtil-getPrice-02", "獲取供應商價格失敗，參數set_depot_id不允許爲空！");
		}
		if(StringUtil.isBlankOrNull(get_depot_id)){
			throw new BusinessException("SuppPriceUtil-getPrice-03", "獲取供應商價格失敗，參數get_depot_id不允許爲空！");
		}
		
		String p_1051=curParamBiz.getParameterValue(1051, "");
		if(StringUtil.isBlankOrNull(p_1051)){
			throw new BusinessException("SuppPriceUtil-getPrice-04", "獲取供應商價格失敗，請聯繫系統管理員檢查系統參數1051是否設置正確！");
		}
		
		switch(p_1051){
		case "0"://實際成本
		case "1"://採購成本
		case "2"://吊牌價
			//折扣保留6位小數
			return getOtherPrice(clos,p_1051);
		case "3":
			return getPolicyPrice(clos,set_depot_id,get_depot_id,sell_class_id);
		default:
			throw new BusinessException("SuppPriceUtil-getPrice-05", "獲取供應商價格失敗，非法類型！");
		}
	}
	
	
	/**
	 * 獲取實際成本，採購成本，吊牌價
	 * @param clos clothing_id 集合
	 * @param p_1051 參數0,1,2
	 * @return
	 */
	private static List<BillPrice> getOtherPrice(List<String> clos,String p_1051){
		List<ClothingInfoEntity> closlist=curClothingBiz.getClothingInfo(clos);
		List<BillPrice> list=new ArrayList<>();
		if(list!=null && list.size()>0){
			BillPrice priceEntity=null;
			for(ClothingInfoEntity closEntity:closlist){
				priceEntity=new BillPrice();
				priceEntity.setClothing_id(closEntity.getClothing_id());
				switch(p_1051){
					case "0"://實際成本
						priceEntity.setS_price(closEntity.getCost());
						//折扣=實際成本價/吊牌價
						priceEntity.setSale_rate(DoubleUtil.round(DoubleUtil.div(closEntity.getCost(), closEntity.getClothing_jprice()),6));
						break;
					case "1"://採購成本
						priceEntity.setS_price(closEntity.getCost1());
						//折扣=採購成本價/吊牌價
						priceEntity.setSale_rate(DoubleUtil.round(DoubleUtil.div(closEntity.getCost1(), closEntity.getClothing_jprice()),6));
						break;
					case "2"://吊牌價 1折
						priceEntity.setS_price(closEntity.getClothing_jprice());
						priceEntity.setSale_rate(1);
						break;
					default:
						throw new BusinessException("SuppPriceUtil-getOtherPrice-01", "獲取供應商價格失敗，非法類型！");
				}
				priceEntity.setJ_price(closEntity.getClothing_jprice());
				list.add(priceEntity);
			}
		}
		return list;
	}
	
	/**
	 * B2B 獲取供應商政策價格
	 * @param clos clothing_id 集合
	 * @param set_depot_id 發貨地ID
	 * @param get_depot_id 收貨地ID
	 * @param sell_class_id 發貨類型
	 * @return
	 */
	private static List<BillPrice> getPolicyPrice(List<String> clos,String set_depot_id,String get_depot_id,String sell_class_id){
		ParamBillPrice price_param = new ParamBillPrice();
        price_param.setClothing_id(clos);
        price_param.setFlow_type(5);
        price_param.setSet_depot_id(set_depot_id);
        price_param.setGet_depot_id(get_depot_id);
        price_param.setSet_selltype_id(sell_class_id);
        if (curB2bService == null) {
            throw new BusinessException("SuppPriceUtil-getPrice-04", "獲取供應商價格失敗，B2B SDK實例爲空！");
        }
        return curB2bService.getBillPrice(price_param);
	}
}