存入MySQL的相关操作与配置

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#导入settings文件中的配置
from scrapy.utils.project import get_project_settings
class MyMySqlPipeline(object):
    def open_spider(self, spider):
        # 连接数据库，需要在settings.py 文件中配置
        settings = get_project_settings()
        host = settings[‘DB_HOST‘]
        port = settings[‘DB_PORT‘]
        user = settings[‘DB_USER‘]
        password = settings[‘DB_PASSWORD‘]
        dbname = settings[‘DB_NAME‘]
        dbcharset = settings[‘DB_CHARSET‘]
        self.conn = pymysql.Connect(host=host, port=port, user=user, password=password, db=dbname, charset=dbcharset)
        self.conn = pymysql.Connect(host=host, port=port, user=user, password=password, db=dbname, charset=dbcharset)

    def process_item(self, item, spider):
        # 写入数据库中
        sql = ‘insert into movies(movie_poster, movie_name, movie_score, movie_type, movie_director, movie_screenwriter, movie_actor, movie_time, movie_content) values("%s", "%s", "%s", "%s", "%s", "%s", "%s", "%s", "%s")‘% (
        item[‘movie_poster‘], item[‘movie_name‘], item[‘movie_score‘], item[‘movie_type‘], item[‘movie_director‘], item[‘movie_screenwriter‘], item[‘movie_actor‘],
        item[‘movie_time‘], item[‘movie_content‘])
        # 执行sql语句
        self.cursor = self.conn.cursor()
        try:
　　　　　　　#创建游标
            self.cursor.execute(sql)
　　　　　　　#提交操作
            self.conn.commit()
        except Exception as e:
            print(e)
            self.conn.rollback()
        return item

    def close_spider(self, spider):
        self.cursor.close()
        self.conn.close()
注意：另外需要在数据库中定义数据结构，应为mysql不会自己创建

在settings.py 中任意位置配置MySQL

 激活使用

也可以在爬虫文件中自定义

存入MySQL的相关操作与配置

标签：img   文件   import   提交   inf   图片   iter   激活   screen   

原文地址：https://www.cnblogs.com/airapple/p/9158989.html