【解決方法】：
方法一：設(shè)置postgresql的客戶端編碼為GBK，這時PostgreSQL就知道輸入的內(nèi)容是GBK編碼的，這樣PostgreSQL數(shù)據(jù)庫會自動做字符集的轉(zhuǎn)換，把其轉(zhuǎn)換成UTF8編碼。
方法二：直接設(shè)置終端的字符集編碼為UTF8，讓輸入的編碼直接為UTF8，而不是GBK。
【具體演示】：
設(shè)置postgresql的客戶端編碼：
設(shè)置psql客戶端字符集為GBK，方法有兩種，一種是在psql中輸入“\encoding GBK” ，另一種是設(shè)置環(huán)境變量“export PGCLIENTENCODING=GBK”，演示如下：
#psql -d dsc
dsc=# insert into t values(1,'中國');
ERROR: invalid byte sequence for encoding "UTF8": 0xd6d0
HINT: This error can also happen if the byte sequence does not match the encoding expected by the server, which is controlled by "client_encoding".
dsc=# show client_encoding;
client_encoding
-----------------
UTF8
(1 row)
dsc=# \encoding GBK
dsc=# show client_encoding;
client_encoding
-----------------
GBK
(1 row)
dsc=# insert into t values(1,'中國');
INSERT 0 1
dsc=# commit;
WARNING: there is no transaction in progress
COMMIT
dsc=# select * from t;
id | name
----+------
1 | 中國
(1 row)
[postgres@dsc ~]$ export PGCLIENTENCODING=GBK
[postgres@dsc ~]$ psql
psql: FATAL: conversion between GBK and LATIN1 is not supported
[postgres@dsc ~]$ psql -d dsc
psql (8.4.3)
Type "help" for help.
dsc=# select * from t;
id | name
----+------
1 | 中國
(1 row)
dsc=# insert into t values(2,'我的中國');
INSERT 0 1
dsc=# select * from t;
id | name
----+----------
1 | 中國
2 | 我的中國
(2 rows)