1.查询数据库结果乱码

mysql>   select doctitle,docpuburl from wcmdocument order by docpubtime desc limit 0,3;+-----------+-------------------------------------------------------------+| doctitle  | docpuburl                                                   |+-----------+-------------------------------------------------------------+| 2016-???? | http://xxx/case_usa/case_uk_bk/1075572.shtml || 2016-???? | http://xxx/case_uk_bk/1075570.shtml || 444??333  | http://xxx/test/blog/1333090.shtml |+-----------+-------------------------------------------------------------+3 rows in set (0.00 sec)

2.通过show variables like 'character_set_%';命令查询发现字符集不是utf-8

mysql> show variables like 'character_set_%';+--------------------------+----------------------------------------+| Variable_name            | Value                                  |+--------------------------+----------------------------------------+| character_set_client     | latin1                                 || character_set_connection | latin1                                 || character_set_database   | utf8                                   || character_set_filesystem | binary                                 || character_set_results    | latin1                                 || character_set_server     | utf8                                   || character_set_system     | utf8                                   || character_sets_dir       | /usr/local/mysql5.6.39/share/charsets/ |+--------------------------+----------------------------------------+8 rows in set (0.00 sec)

3.修改字符集为utf-8

mysql> set character_set_client=utf8;Query OK, 0 rows affected (0.00 sec)mysql> mysql> set character_set_connection=utf8;Query OK, 0 rows affected (0.00 sec)mysql> set character_set_connection=utf8;Query OK, 0 rows affected (0.00 sec)mysql> set character_set_results=utf8;Query OK, 0 rows affected (0.00 sec)

4.查询修改结果是否生效;

mysql> show variables like 'character_set_%';+--------------------------+----------------------------------------+| Variable_name            | Value                                  |+--------------------------+----------------------------------------+| character_set_client     | utf8                                   || character_set_connection | utf8                                   || character_set_database   | utf8                                   || character_set_filesystem | binary                                 || character_set_results    | utf8                                   || character_set_server     | utf8                                   || character_set_system     | utf8                                   || character_sets_dir       | /usr/local/mysql5.6.39/share/charsets/ |+--------------------------+----------------------------------------+8 rows in set (0.00 sec)

5.再次查询,解决乱码

mysql> select doctitle,docpuburl from wcmdocument order by docpubtime desc limit 0,3;+-------------------+-------------------------------------------------------------+| doctitle          | docpuburl                                                   |+-------------------+-------------------------------------------------------------+| 2016-xx数据 | http://xxx/case_usa/case_uk_bk/1075572.shtml || 2016-xx数据 | http://xxx/case_uk_bk/1075570.shtml || 2016-xx数据  | http://xxx/test/blog/1333090.shtml  |+-------------------+-------------------------------------------------------------+3 rows in set (0.00 sec)