多渠道支付对接-策略模式+工厂模式编码实战超级大汇总—

大致流程

PayInfoVO类开发
策略接口开发 PayStrategy
策略上下文 PayStrategyContext开发
具体支付策略开发 AlipayStrategy、WechatPayStrategy
简单工厂类开发

首先需要建立一个返回类

package net.xdclass.vo;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

import java.math.BigDecimal;


@Data
@AllArgsConstructor
@NoArgsConstructor
public class PayInfoVO {

    /**
     * 订单号
     */
    private String outTradeNo;

    /**
     * 订单总金额
     */
    private BigDecimal payFee;

    /**
     * 支付类型 微信-支付宝-银行-其他
     */
    private String payType;

    /**
     * 端类型 APP/H5/PC
     */
    private String clientType;

    /**
     * 标题
     */
    private String title;

    /**
     * 描述
     */
    private String description;


    /**
     * 订单支付超时时间，毫秒
     */
    private long orderPayTimeoutMills;

}

AlipayStrategy

import lombok.extern.slf4j.Slf4j;
import net.xdclass.config.PayUrlConfig;
import net.xdclass.vo.PayInfoVO;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;


@Slf4j
@Service
public class AlipayStrategy implements PayStrategy {

    @Autowired
    private PayUrlConfig payUrlConfig;


    @Override
    public String unifiedorder(PayInfoVO payInfoVO) {

        return null;
    }

    @Override
    public String refund(PayInfoVO payInfoVO) {
        return null;
    }

    @Override
    public String queryPaySuccess(PayInfoVO payInfoVO) {
        return null;
    }
}

PayFactory

package net.xdclass.component;

import lombok.extern.slf4j.Slf4j;
import net.xdclass.enums.ProductOrderPayTypeEnum;
import net.xdclass.vo.PayInfoVO;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;



@Component
@Slf4j
public class PayFactory {


    @Autowired
    private AlipayStrategy alipayStrategy;

    @Autowired
    private WechatPayStrategy wechatPayStrategy;


    /**
     * 创建支付，简单工程模式
     * @param payInfoVO
     * @return
     */
    public String pay(PayInfoVO payInfoVO){

        String payType = payInfoVO.getPayType();

        if(ProductOrderPayTypeEnum.ALIPAY.name().equalsIgnoreCase(payType)){
            //支付宝支付
            PayStrategyContext payStrategyContext = new PayStrategyContext(alipayStrategy);

            return payStrategyContext.executeUnifiedorder(payInfoVO);

        } else if(ProductOrderPayTypeEnum.WECHAT.name().equalsIgnoreCase(payType)){
            //微信支付 暂未实现
            PayStrategyContext payStrategyContext = new PayStrategyContext(wechatPayStrategy);

            return payStrategyContext.executeUnifiedorder(payInfoVO);
        }


        return "";
    }


    /**
     * 查询订单支付状态
     *
     * 支付成功返回非空，其他返回空
     *
     * @param payInfoVO
     * @return
     */
    public String queryPaySuccess(PayInfoVO payInfoVO){
        String payType = payInfoVO.getPayType();

        if(ProductOrderPayTypeEnum.ALIPAY.name().equalsIgnoreCase(payType)){
            //支付宝支付
            PayStrategyContext payStrategyContext = new PayStrategyContext(alipayStrategy);

            return payStrategyContext.executeQueryPaySuccess(payInfoVO);

        } else if(ProductOrderPayTypeEnum.WECHAT.name().equalsIgnoreCase(payType)){
            //微信支付 暂未实现
            PayStrategyContext payStrategyContext = new PayStrategyContext(wechatPayStrategy);

            return payStrategyContext.executeQueryPaySuccess(payInfoVO);
        }


        return "";


    }




}

PayStrategy

package net.xdclass.component;

import net.xdclass.vo.PayInfoVO;


public interface PayStrategy {


    /**
     * 下单
     * @return
     */
    String unifiedorder(PayInfoVO payInfoVO);


    /**
     *  退款
     * @param payInfoVO
     * @return
     */
    default String refund(PayInfoVO payInfoVO){return "";}


    /**
     * 查询支付是否成功
     * @param payInfoVO
     * @return
     */
    default String queryPaySuccess(PayInfoVO payInfoVO){return "";}


}

PayStrategyContext

package net.xdclass.component;

import net.xdclass.vo.PayInfoVO;



public class PayStrategyContext {

    private PayStrategy payStrategy;

    public PayStrategyContext(PayStrategy payStrategy){

        this.payStrategy = payStrategy;
    }


    /**
     * 根据支付策略，调用不同的支付
     * @param payInfoVO
     * @return
     */
    public String executeUnifiedorder(PayInfoVO payInfoVO){
        return this.payStrategy.unifiedorder(payInfoVO);
    }


    /**
     * 根据支付的策略，调用不同的查询订单支持状态
     * @param payInfoVO
     * @return
     */
    public String executeQueryPaySuccess(PayInfoVO payInfoVO){
        return this.payStrategy.queryPaySuccess(payInfoVO);

    }


}

WechatPayStrategy

package net.xdclass.component;

import lombok.extern.slf4j.Slf4j;
import net.xdclass.vo.PayInfoVO;
import org.springframework.stereotype.Service;



@Slf4j
@Service
public class WechatPayStrategy implements PayStrategy {

    @Override
    public String unifiedorder(PayInfoVO payInfoVO) {


        return null;
    }

    @Override
    public String refund(PayInfoVO payInfoVO) {
        return null;
    }

    @Override
    public String queryPaySuccess(PayInfoVO payInfoVO) {
        return null;
    }
}

本文作者为DBC，转载请注明。