openfire离线消息乱码(XMPP)

Openfire采用MySQL数据库后的中文乱码问题:

建立数据库的时候 create database openfire default character set utf8

MySQL does not have proper Unicode support, which makes supporting data
in non-Western languages difficult. However, the MySQL JDBC driver has a workaround
which can be enabled by adding ?useUnicode=true&characterEncoding=UTF-8&characterSetResults=UTF-8
to the URL of the JDBC driver. You can edit the conf/openfire.xml file to add this value.

点击这里查看原文。

这个东西的原因无非就是编码错误。开始时用下面一句把数据库改了之后

alter database openfire default character set utf8 default collate utf8_general_ci;

改了服务器的的连接字符串还是不行。

一怒之下,删除openfire，删除数据库重装。

dpkg -P openfire 

dpkg -i openfire.deb

结果好了。