Python“MySQL 错误 [-1]：执行操作失败；无法处理参数”

Question

我正在使用以下代码为我的表更新许多内容。但是，这在使用 Python 的 Windows 上工作很好，但在我的 Ubuntu 机器上却不行。更新很多人一直说MySQL Error [-1]: Failed executing the operation; Could not process parameters。是否有任何解决方案来追踪导致此错误的确切原因？

def update_wifs(done_data):
    magicwallet = mysql.connector.connect(
        host="localhost",
        user="dumpass",
        password="dumuser",
        database="magicwallet"
    )
    mysql_table = "magic97mil"
    conn = magicwallet.cursor()
    
    query = ""
    values = []

    for data_dict in done_data:

        if not query:
            columns = ', '.join('`{0}`'.format(k) for k in data_dict)
            duplicates = ', '.join('{0}=VALUES({0})'.format(k) for k in data_dict)
            place_holders = ', '.join('%s'.format(k) for k in data_dict)
            query = "INSERT INTO {0} ({1}) VALUES ({2})".format(mysql_table, columns, place_holders)
            query = "{0} ON DUPLICATE KEY UPDATE {1}".format(query, duplicates)

        v = data_dict.values()
        values.append(v)

    try:
        conn.executemany(query, values)
    except Exception as e:
        try:
            print("MySQL Error [%d]: %s" % (e.args[0], e.args[1]))
        except IndexError:
            print("MySQL Error: %s" % str(e))

        magicwallet.rollback()
        return False

    magicwallet.commit()
    conn.close()
    magicwallet.close()

    return done_data

done_data 就这样来了。我的表中列的名称与我的表中的列名完全相同。它在 Windows 机器上运行良好，但在 Unix 上一直出错

{'id': 73399, 'wif': 'uMx1VuwRT4cKQQyE', 'PublicAddress': 'p62GqtrDtRg', 'PublicAddressP2WPKH': 'dj3krprezquku7wkswv', 'phrase': '0075839', 'index_file': 73399, 'imported': 1}

{'id': 73400, 'wif': 'L1Ri4cv3vicfGbESct', 'PublicAddress': 'JfstH24WMHGZz63WEopk', 'PublicAddressP2WPKH': 'ffkt6xxgksktzzkq8ucydrn8ps', 'phrase': '007584', 'index_file': 73400, 'imported': 1}

UPD 0. 查询打印

INSERT INTO magic97mil (id, wif, PublicAddress, PublicAddressP2WPKH, phrase, index_file, imported) 值 (%s, %s, %s, %s, %s, %s, %s) ON DUPLICATE KEY UPDATE id=VALUES(id), wif=值（wif），公共地址=值（公共地址）， 公共地址P2WPKH=值（公共地址P2WPKH）， 短语=值（短语），索引文件=值（索引文件）， 进口=VALUES（进口）

UPD 1. 完整追溯

Traceback (most recent call last):
  File "/usr/local/lib/python3.8/dist-packages/mysql/connector/cursor_cext.py", line 313, in _batch_insert
    prepared = self._cnx.prepare_for_mysql(params)
  File "/usr/local/lib/python3.8/dist-packages/mysql/connector/connection_cext.py", line 659, in prepare_for_mysql
    raise ValueError("Could not process parameters")
ValueError: Could not process parameters

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/var/www/html/WalletMagic97mil/to_wif.py", line 76, in update_wifs
    conn.executemany(query, values)
  File "/usr/local/lib/python3.8/dist-packages/mysql/connector/cursor_cext.py", line 355, in executemany
    stmt = self._batch_insert(operation, seq_params)
  File "/usr/local/lib/python3.8/dist-packages/mysql/connector/cursor_cext.py", line 333, in _batch_insert
    raise errors.InterfaceError(
mysql.connector.errors.InterfaceError: Failed executing the operation; Could not process parameters

UPD 2. windows 和 unix 的区别values

所以print(values)在Unix和Windows上的区别是：

Windows 是这样的：

[{'id': 73401, 'wif': 'iVVUsHiLPLGq3uPaPyzdQ6xFeB3', 'PublicAddress': 'nLNtv3XUiMs7f1q8vU', 'PublicAddressP2WPKH': 'epw8ae08fnjpuva7x8783', 'phrase': '0075840', 'index_file': 73401, 'imported': 1}, 

{'id': 73402, 'wif': 'i41ZqWgvoKbUjYsbA41A', 'PublicAddress': 'Vd1D2krnjMucjmLU9', 'PublicAddressP2WPKH': '20g4my4rm4xgt04ph8xcmgyk', 'phrase': '0075841', 'index_file': 73402, 'imported': 1}]

Unix 是这样的：

[dict_values([73101, 'bmgHbonEKw4LoUqmwSg', '7K77mEtoiH5x8FnmJi2', 'dx3pdppq0zgacldefnge8ea3', '0075576', 73101, 1]),
 
dict_values([73102, 'nojKY4pzXxJ9TeFX14vpnk', 'qkuVECaPs3WcCj', 'j5sv9q28kzaqs0m6g', '0075577', 73102, 1])]

我认为这可能是确切的错误

Answer 1

您应该使用一种模式来构建查询：

        if not query:
            columns = ', '.join('`{0}`'.format(k) for k in data_dict)
            duplicates = ', '.join('{0}=VALUES({0})'.format(k) for k in data_dict)
            place_holders = ', '.join('`{0}`'.format(k) for k in data_dict)

确实，您不应该使用字符串构建查询。这是不安全、容易出错且不必要的。更好的方法是将parameter binding 与准备好的语句一起使用。

Answer 2

我不知道为什么。但我像这样替换以下代码：

v = list(data_dict.values())
values.append(v)

它开始对我很好