设计模式之责任链模式

阿无，2026-08-24 15:23
java 复制代码
package com.ruijie.futurewindow.order.order.strategy.chain;

import com.ruijie.futurewindow.order.order.strategy.OrderModifyCommitValidateHandler;
import com.ruijie.futurewindow.order.order.strategy.model.ModifyCommitReviewContext;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Service;

import javax.annotation.PostConstruct;
import java.util.ArrayList;
import java.util.List;

/**
 * 修改订单规则校验处理器类
 *
 * @author Long Yu
 * @date 2024-05-30 21:16:03
 */
@Service
public class ModifyCommitOrderRuleValidateChainExecutor {
    
    public List<OrderModifyCommitValidateHandler> chainList = new ArrayList<>();
    
    @Autowired
    @Qualifier("seckillOrderDetailModifyValidateHandler")
    private OrderModifyCommitValidateHandler seckillOrderDetailModifyValidateHandler;
    
    @Autowired
    @Qualifier("orderComplianceVerificationValidateHandler")
    private OrderModifyCommitValidateHandler orderComplianceVerificationValidateHandler;
    
    @Autowired
    @Qualifier("composeOrderDetailModifyValidateHandler")
    private OrderModifyCommitValidateHandler composeOrderDetailModifyValidateHandler;
    
    @Autowired
    @Qualifier("minSaleCountModifyValidateHandler")
    private OrderModifyCommitValidateHandler minSaleCountModifyValidateHandler;
    
    @PostConstruct
    public void init() {
        // 初始化三个顺序未来考虑其他方式维护顺序
        chainList.add(seckillOrderDetailModifyValidateHandler);
        chainList.add(composeOrderDetailModifyValidateHandler);
        chainList.add(orderComplianceVerificationValidateHandler);
        chainList.add(minSaleCountModifyValidateHandler);
    }
    
    /**
     * 执行校验
     *
     * @param context 参数
     */
    public void execute(ModifyCommitReviewContext context){
        // 按照顺序逐个遍历校验处理
        chainList.forEach(handler -> handler.executeCheck(context));
    }
    
}