Product.java

public class Product {private Integer productId;private String productName;private Integer quantity;// getters and setters ...
}

ProductMapper.xml

<mapper namespace="com.example.mapper.ProductMapper"><!-- 其他的SQL映射和操作 ... --><!-- 批量插入或更新的操作 --><insert id="insertOrUpdateProducts" parameterType="list">INSERT INTO products (product_id, product_name, quantity)VALUES <foreach collection="list" item="product" separator="," >(#{product.productId}, #{product.productName}, #{product.quantity})</foreach>ON DUPLICATE KEY UPDATEproduct_name = VALUES(product_name),quantity = VALUES(quantity);</insert>
</mapper>