6、service层

接口：

package com.wzy.springcloud.service;
import com.wzy.springcloud.Entities.Payment;
import com.wzy.springcloud.dao.PaymentDao;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Param;
import org.springframework.stereotype.Service;
import javax.annotation.Resource;
@Mapper
public interface PaymentService {
    public int create(Payment payment);
    public Payment getPaymentById(@Param("id") Long id);
}

实现类：

package com.wzy.springcloud.service.impl;
import com.wzy.springcloud.Entities.Payment;
import com.wzy.springcloud.dao.PaymentDao;
import com.wzy.springcloud.service.PaymentService;
import org.springframework.stereotype.Service;
import javax.annotation.Resource;
@Service
public class PaymentServiceImpl implements PaymentService {
    @Resource
    private PaymentDao paymentDao;
    public int create(Payment payment){
        return paymentDao.create(payment);
    }
    public Payment getPaymentById(Long id){
        return paymentDao.getPaymentById(id);
    }
}