MySql触发器中文乱码问题解决

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    在开发XXXX项目过程中，需要用到触发器，该触发器会将部分数据复制到其它表中，但是复制后的数据，中文部分乱码，影响了正常的功能，所有表的默认字符集都是utf8，表中中文字段的字符集也已经显示指定为utf8,但是还是乱码！

    解决方案就是指定中文变量所用的字符集为utf8，触发器代码如下：

DELIMITER $$
DROP TRIGGER /*!50032 IF EXISTS */ `antsoldier`.`event_ai`$$
create trigger `antsoldier`.`event_ai` AFTER INSERT on `antsoldier`.`event` 
for each row BEGIN
    declare threatName varchar(100) character set utf8;
    declare threatType varchar(100) character set utf8;
    declare threatProtocol varchar(24) character set utf8;
    declare threatPid int;
    declare threatCid int;
    declare existNameCount int;
    declare existTypeCount int;
    declare existHostCount int;
    declare existProtocolCount int;
    /*获取威胁的pid和cid*/
    select pid,cid into threatPid,threatCid from host where ip=inet_ntoa(new.dst_ip);
    if threatPid > 0 and threatCid > 0 then
        /*获取威胁的名称和类型*/
        select t2.name,t3.name into threatName,threatType from plugin_sid t1,classic_eventbase t2,classic_type t3 where t1.plugin_id=new.plugin_id and t1.sid=new.plugin_sid and t1.class_id=t2.class_id and t1.class_sid=t2.sid and t3.class_id=t1.class_id;    
        select name into threatProtocol from protocol where id=new.protocol;
        /*获取该名称的威胁存在的次数*/
        select count(*) into existNameCount from threat_statistic_name where name=threatName and pid=threatPid and cid=threatCid limit 0,1;
        /*获取该类型的威胁存在的次数*/
        select count(*) into existTypeCount from threat_statistic_type where type=threatType and pid=threatPid and cid=threatCid limit 0,1;    
        /*获取威胁的主机ip信息*/
        select count(*) into existHostCount from threat_statistic_host where hostip=new.dst_ip and pid=threatPid and cid=threatCid limit 0,1;
        /*获取威胁的协议存在的次数*/
        select count(*) into existProtocolCount from threat_statistic_protocol t1,protocol t2 where t2.id=new.protocol and t1.name=t2.name and pid=threatPid and cid=threatCid limit 0,1;
        /*处理高危主机*/
        if existHostCount>0 then
            update threat_statistic_host set counts=counts+1 where hostip=new.dst_ip and pid=threatPid and cid=threatCid;
        else
            insert into threat_statistic_host(hostip,counts,pid,cid) values(new.dst_ip,1,threatPid,threatCid);
        end if;
        /*处理威胁名称*/
        if existNameCount>0 then
            update threat_statistic_name set counts=counts+1 where pid=threatPid and cid=threatCid and name=threatName;
        else
            insert into threat_statistic_name(name,counts,pid,cid) values(threatName,1,threatPid,threatCid);
        end if;
        /*处理威胁类型*/
        if existTypeCount>0 then
            update threat_statistic_type set counts=counts+1 where pid=threatPid and cid=threatCid and type=threatType;
        else
            insert into threat_statistic_type(type,counts,pid,cid) values(threatType,1,threatPid,threatCid);
        end if;

        /*处理威胁协议*/
        if existProtocolCount>0 then
            update threat_statistic_protocol set counts=counts+1 where name=threatProtocol and pid=threatPid and cid=threatCid;
        else
            insert into threat_statistic_protocol(name,counts,pid,cid) values(threatProtocol,1,threatPid,threatCid);
        end if;
    end if;
END;
$$
DELIMITER ;