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58 lines
1.8 KiB
Python
58 lines
1.8 KiB
Python
import pymysql , config
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def userSurplus(userkey):
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#打开数据库连接
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db = pymysql.connect(host=config.readConf()["db"]["host"],
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port=config.readConf()["db"]["port"],
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user=config.readConf()["db"]["user"],
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password=config.readConf()["db"]["passwd"],
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database=config.readConf()["db"]["database"])
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# 使用 cursor() 方法创建一个游标对象 cursor
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cursor = db.cursor()
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# 使用 execute() 方法执行 SQL 查询
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cursor.execute(f"SELECT surplus FROM usersurplus WHERE userkey = '{userkey}';")
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# 使用 fetchone() 方法获取单条数据.
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data = cursor.fetchone()
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# 关闭连接
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db.close()
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if data != None:
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return data[0]
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return -99999
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def reduce_value(userkey, value): # 减去对应的值
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#打开数据库连接
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db = pymysql.connect(host=config.readConf()["db"]["host"],
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port=config.readConf()["db"]["port"],
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user=config.readConf()["db"]["user"],
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password=config.readConf()["db"]["passwd"],
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database=config.readConf()["db"]["database"])
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# 使用 cursor() 方法创建一个游标对象 cursor
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cursor = db.cursor()
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# 执行 SQL 查询以获取当前值
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cursor.execute(f"SELECT surplus FROM usersurplus WHERE userkey = '{userkey}';")
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current_value = cursor.fetchone()[0]
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# 如果没有找到用户,则返回错误信息
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if current_value is None:
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db.close()
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return -1
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# 计算新的值
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new_value = current_value - value
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# 更新数据库中的值
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cursor.execute(f"UPDATE usersurplus SET surplus={new_value} WHERE userkey='{userkey}'")
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# 提交事务
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db.commit()
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# 关闭连接
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db.close()
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# 返回新值
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return 0 |