问一下 flask sqlalchemy 往 mysql 写不了中文

[holinhot]

代码 820 行为 db.session.commit()

错误代码
Traceback (most recent call last):
File "/home/app_sandbox/api/api-service/app.py", line 820, in new_order
db.session.commit()
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/orm/scoping.py", line 162, in do
return getattr(self.registry(), name)(*args, **kwargs)
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/orm/session.py", line 1027, in commit
self.transaction.commit()
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/orm/session.py", line 494, in commit
self._prepare_impl()
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/orm/session.py", line 473, in _prepare_impl
self.session.flush()
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/orm/session.py", line 2459, in flush
self._flush(objects)
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/orm/session.py", line 2597, in _flush
transaction.rollback(_capture_exception=True)
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/util/langhelpers.py", line 68, in __exit__
compat.reraise(exc_type, exc_value, exc_tb)
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/util/compat.py", line 153, in reraise
raise value
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/orm/session.py", line 2557, in _flush
flush_context.execute()
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/orm/unitofwork.py", line 422, in execute
rec.execute(self)
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/orm/unitofwork.py", line 589, in execute
uow,
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/orm/persistence.py", line 245, in save_obj
insert,
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/orm/persistence.py", line 1138, in _emit_insert_statements
statement, params
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 988, in execute
return meth(self, multiparams, params)
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/sql/elements.py", line 287, in _execute_on_connection
return connection._execute_clauseelement(self, multiparams, params)
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1107, in _execute_clauseelement
distilled_params,
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1248, in _execute_context
e, statement, parameters, cursor, context
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1468, in _handle_dbapi_exception
util.reraise(*exc_info)
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/util/compat.py", line 153, in reraise
raise value
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/engine/base.py", line 1244, in _execute_context
cursor, statement, parameters, context
File "/usr/local/lib/python3.6/site-packages/sqlalchemy/engine/default.py", line 552, in do_execute
cursor.execute(statement, parameters)
File "/usr/local/lib64/python3.6/site-packages/MySQLdb/cursors.py", line 202, in execute
args = tuple(map(db.literal, args))
File "/usr/local/lib64/python3.6/site-packages/MySQLdb/connections.py", line 271, in literal
s = self.escape(o, self.encoders)
UnicodeEncodeError: 'ascii' codec can't encode characters in position 11-12: ordinal not in range(128)
'ascii' codec can't encode characters in position 11-12: ordinal not in range(128)

[holinhot]

读中文到是没有问题

[mon3]

import sys
reload(sys)
sys.setdefaultencoding('utf8')
换 python3 吧

[Ritter]

s

[Ritter]

ca 按错了 是不是数据库编码问题

[chizuo]

把 mysql 编码格式改为 utf8emb4

[4everLoveU]

mysqldb 的用法，供参考，写入数据之前保证数据是 UTF-8 编码，以及数据库编码也是 UTF8

cursor.execute("SET NAMES utf8mb4;")
cursor.execute("SET CHARACTER SET utf8mb4;")
cursor.execute("SET character_set_connection=utf8mb4;")

[holinhot]

@mon3 已经是 python36

[holinhot]

@4everLoveU 数据库编码是 utf-8，写入的中文字符串打印在屏幕是正常的，没有乱码。从数据库读出来的也正常。就是写入不行

[msy45]

mysql 默认的 utf-8 是 utf8mb3，改成 utf8mb4 试试吧