我對這個錯誤進行了大量的谷歌搜索，并將其歸結為我正在使用的數據庫采用了不同的編碼。

我正在使用的AIX服務器正在運行psql 8.2.4

server_encoding | LATIN1 | | Client Connection Defaults / Locale and Formatting | Sets the server (database) character set encoding.

我正在使用的windows 2008 R2服務器正在運行

psql(9.3.4)CREATE DATABASE postgres

WITH OWNER = postgres

ENCODING = 'UTF8'

TABLESPACE = pg_default

LC_COLLATE = 'English_Australia.1252'

LC_CTYPE = 'English_Australia.1252'

CONNECTION LIMIT = -1;

COMMENT ON DATABASE postgres

IS 'default administrative connection database';

現在，當我嘗試執行下面的python腳本時，我得到了這個錯誤Traceback (most recent call last):

File "datamain.py", line 39, in

sys.exit(main())

File "datamain.py", line 33, in main

write_file_to_table("cms_jobdef.txt", "cms_jobdef", con_S104838)

File "datamain.py", line 21, in write_file_to_table

cur.copy_from(f, table, ",")

psycopg2.DataError: invalid byte sequence for encoding "UTF8": 0xa0

CONTEXT: COPY cms_jobdef, line 15209

這是我的劇本import psycopg2

import StringIO

import sys

import pdb

def connect_db(db, usr, pw, hst, prt):

conn = psycopg2.connect(database=db, user=usr,

password=pw, host=hst, port=prt)

return conn

def write_table_to_file(file, table, connection):

f = open(file, "w")

cur = connection.cursor()

cur.copy_to(f, table, ",")

f.close()

cur.close()

def write_file_to_table(file, table, connection):

f = open(file,"r")

cur = connection.cursor()

cur.copy_from(f, table, ",")

f.close()

cur.close()

def main():

login = open('login.txt','r')

con_tctmsv64 = connect_db("x", "y",

login.readline().strip(),

"d.domain", "c")

con_S104838 = connect_db("x", "y", "z", "a", "b")

try:

write_table_to_file("cms_jobdef.txt", "cms_jobdef", con_tctmsv64)

write_file_to_table("cms_jobdef.txt", "cms_jobdef", con_S104838)

finally:

con_tctmsv64.close()

con_S104838.close()

if __name__ == "__main__":

sys.exit(main())

已刪除一些敏感數據。

所以我不知道該怎么做。據我所知，copy_expert方法可能有助于導出為UTF8編碼。但由于我從中提取數據的服務器運行的是8.2.4，我認為它不支持COPY編碼格式。

我認為我最好的辦法是嘗試在windows服務器上重新安裝postgre數據庫，其中包含拉丁語1的編碼。當我嘗試這樣做時，我得到了下面的錯誤。

所以我很困，任何幫助都將不勝感激！

更新我在windows上安裝了postgre db作為LATIN1編碼，方法是將默認本地更改為“C”。然而，這給了我以下的錯誤，似乎不是一個可能成功/正確的方法

我還嘗試過使用PSQLCOPY函數對文件進行二進制編碼def write_table_to_file(file, table, connection):

f = open(file, "w")

cur = connection.cursor()

#cur.copy_to(f, table, ",")

cur.copy_expert("COPY cms_jobdef TO STDOUT WITH BINARY", f)

f.close()

cur.close()

def write_file_to_table(file, table, connection):

f = open(file,"r")

cur = connection.cursor()

#cur.copy_from(f, table)

cur.copy_expert("COPY cms_jobdef FROM STDOUT WITH BINARY", f)

f.close()

cur.close()

還是不走運我也犯了同樣的錯誤DataError: invalid byte sequence for encoding "UTF8": 0xa0

CONTEXT: COPY cms_jobdef, line 15209, column descript

關于費城人的回答，我嘗試過這種方法，但仍然沒有成功。import psycopg2

import StringIO

import sys

import pdb

import codecs

def connect_db(db, usr, pw, hst, prt):

conn = psycopg2.connect(database=db, user=usr,

password=pw, host=hst, port=prt)

return conn

def write_table_to_file(file, table, connection):

f = open(file, "w")

#fx = codecs.EncodedFile(f,"LATIN1", "UTF8")

cur = connection.cursor()

cur.execute("SHOW client_encoding;")

print cur.fetchone()

cur.copy_to(f, table)

#cur.copy_expert("COPY cms_jobdef TO STDOUT WITH BINARY", f)

f.close()

cur.close()

def write_file_to_table(file, table, connection):

f = open(file,"r")

cur = connection.cursor()

cur.execute("SET CLIENT_ENCODING TO 'LATIN1';")

cur.execute("SHOW client_encoding;")

print cur.fetchone()

cur.copy_from(f, table)

#cur.copy_expert("COPY cms_jobdef FROM STDOUT WITH BINARY", f)

f.close()

cur.close()

def main():

login = open('login.txt','r')

con_tctmsv64 = connect_db("x", "y",

login.readline().strip(),

"ctmtest1.int.corp.sun", "5436")

con_S104838 = connect_db("x", "y", "z", "t", "5432")

try:

write_table_to_file("cms_jobdef.txt", "cms_jobdef", con_tctmsv64)

write_file_to_table("cms_jobdef.txt", "cms_jobdef", con_S104838)

finally:

con_tctmsv64.close()

con_S104838.close()

if __name__ == "__main__":

sys.exit(main())

輸出In [4]: %run datamain.py

('sql_ascii',)

('LATIN1',)

In [5]:

此操作成功完成，但當我運行select * from cms_jobdef;

新數據庫中沒有任何內容

我甚至嘗試過將文件格式從LATIN1轉換為UTF8。還是不走運

奇怪的是，當我只使用postgreCOPY函數手動執行這個過程時，它就工作了。我不知道為什么。再次感謝您的幫助。

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