MysqlDB具有断开自动重连特性，支持多线程下操作，内置连接池，最大连接数100。

from feapder.db.mysqldb import MysqlDB
db = MysqlDB(
    ip="localhost", port=3306, db="feapder", user_name="feapder", user_pass="feapder123"
)

若环境变量中配置了数据库连接方式或者setting中已配置，则可不传参。

db = MysqlDB()
或者
db = MysqlDB.from_url("mysql://username:password@ip:port/db?charset=utf8mb4")

MysqlDB封装了增删改查等方法，方便使用，但太复杂可以直接上sql

# -*- coding: utf-8 -*-
"""
Created on 2022-10-03 23:00:36
---------
@summary:
---------
@author: Administrator
"""

import feapder
from items import *
from feapder.db.mysqldb import MysqlDB

class FirstSpider(feapder.AirSpider):

    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.db = MysqlDB()
    def start_requests(self):
        yield feapder.Request("https://www.baidu.com")

    def parse(self, request, response):
        # 提取网站title
        print(response.xpath("//title/text()").extract_first())
        # 提取网站描述
        print(response.xpath("//meta[@name='description']/@content").extract_first())
        print("网站地址: ", response.url)
        item=feader1_item.Feader1Item()
        item.url=response.url
        sqll='select url from feader1'
        cc=self.db.find(sqll);
        print(cc)
        yield item
if __name__ == "__main__":
    FirstSpider().start()