129 lines
4.9 KiB
Python
129 lines
4.9 KiB
Python
import pandas as pd
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import sqlalchemy
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from sqlalchemy import create_engine
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import configparser
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import os
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from urllib.parse import quote_plus
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def get_db_connection_string(config, section):
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"""从配置文件中构建数据库连接字符串"""
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return f"mysql+pymysql://{config[section]['user']}:{quote_plus(config[section]['password'])}@" \
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f"{config[section]['host']}:{config[section]['port']}/{config[section]['database']}"
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def transform_and_load_agreement(config_file_path):
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"""
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从源数据库提取ba_ma_agreement数据，转换后加载到目标数据库bm_agreement_info
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:param config_file_path: 配置文件路径
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"""
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# 读取配置文件
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if not os.path.exists(config_file_path):
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raise FileNotFoundError(f"配置文件不存在: {config_file_path}")
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config = configparser.ConfigParser()
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config.read(config_file_path)
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# 定义替换规则
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is_slt_mapping = {
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0: 1, # 已结算 → 1
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1: 0 # 未结算 → 0
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}
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try:
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# 获取数据库连接
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source_conn_str = get_db_connection_string(config, 'source_db')
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target_conn_str = get_db_connection_string(config, 'target_db')
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source_engine = create_engine(source_conn_str)
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target_engine = create_engine(target_conn_str)
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# 从源表读取数据（过滤COMPANY_ID=1的记录）
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print("正在从源表ba_ma_agreement读取数据...")
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source_query = """
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SELECT ID, \
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CODE, \
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SIGN_DATE, \
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LEASE_COMPANY, \
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PROJECT, \
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START_TIME,
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AUTHORIZING_PERSON, \
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AUTHORIZING_PHONE, \
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CONTRACT_NUMBER,
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IS_BALANCE, \
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is_push, CREATE_TIME
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FROM ba_ma_agreement
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WHERE COMPANY_ID = 1 \
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"""
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source_df = pd.read_sql(source_query, source_engine)
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if source_df.empty:
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print("没有符合条件的数据需要转换")
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return
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print(f"读取到{len(source_df)}条待转换数据")
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# 数据转换
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print("正在进行数据转换...")
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target_df = pd.DataFrame()
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# 直接复制字段
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target_df['agreement_id'] = source_df['ID']
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target_df['agreement_code'] = source_df['CODE']
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target_df['sign_time'] = source_df['SIGN_DATE']
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target_df['unit_id'] = source_df['LEASE_COMPANY']
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target_df['project_id'] = source_df['PROJECT']
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target_df['plan_start_time'] = source_df['START_TIME']
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target_df['auth_person'] = source_df['AUTHORIZING_PERSON']
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target_df['phone'] = source_df['AUTHORIZING_PHONE']
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target_df['contract_code'] = source_df['CONTRACT_NUMBER']
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target_df['is_push'] = source_df['is_push']
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target_df['create_time'] = source_df['CREATE_TIME']
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# 替换字段（IS_BALANCE → is_slt）
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target_df['is_slt'] = source_df['IS_BALANCE'].map(is_slt_mapping)
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# 检查未映射的值
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if target_df['is_slt'].isna().any():
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unmapped = source_df[target_df['is_slt'].isna()]['IS_BALANCE'].unique()
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print(f"警告: 发现未映射的IS_BALANCE值: {unmapped}")
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# 写入目标表
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print("正在写入目标表bm_agreement_info...")
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target_df.to_sql(
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'bm_agreement_info',
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target_engine,
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if_exists='append',
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index=False,
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dtype={
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'agreement_id': sqlalchemy.types.INTEGER(),
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'agreement_code': sqlalchemy.types.VARCHAR(length=50),
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'sign_time': sqlalchemy.types.DateTime(),
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'unit_id': sqlalchemy.types.INTEGER(),
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'project_id': sqlalchemy.types.INTEGER(),
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'plan_start_time': sqlalchemy.types.DateTime(),
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'auth_person': sqlalchemy.types.VARCHAR(length=50),
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'phone': sqlalchemy.types.VARCHAR(length=20),
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'contract_code': sqlalchemy.types.VARCHAR(length=50),
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'is_slt': sqlalchemy.types.SmallInteger(),
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'is_push': sqlalchemy.types.SmallInteger(),
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'create_time': sqlalchemy.types.DateTime()
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}
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)
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print(f"成功写入{len(target_df)}条数据")
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except Exception as e:
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print(f"处理过程中发生错误: {str(e)}")
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raise
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finally:
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if 'source_engine' in locals():
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source_engine.dispose()
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if 'target_engine' in locals():
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target_engine.dispose()
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if __name__ == "__main__":
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# 配置文件路径（根据实际情况修改）
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config_file = "config.ini"
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try:
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transform_and_load_agreement(config_file)
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except Exception as e:
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print(f"程序执行失败: {str(e)}") |