java insert mysql 中文乱码

jdbc:mysql://192.168.1.77:3306/db360?useUnicode=true&characterEncoding=UTF-8

drop database if exists ljdb;
create database ljdb character set 'utf8' collate 'utf8_general_ci';

use ljdb;
drop table if exists rinfo;
create table rinfo(
day varchar(30)
,id bigint
,abc varchar(30)
,addr1 varchar(30)
,addr2 varchar(30)
,abcd decimal(5,2)
,cc decimal(5,2)
,dd bigint
,eee bigint
,fff varchar(30)
,mask varchar(30)
)
ENGINE=InnoDB DEFAULT CHARSET=utf8
;

CREATE USER 'abc'@'%' IDENTIFIED BY 'abc123';
grant all privileges on ljdb to abc@'%';
grant all on *.* to abc@'%';

修改my.ini配置文件

[client]
default-character-set=utf8
[mysql]
default-character-set=utf8
[mysqld]
default-character-set=utf8

修改MySql默认编码

MySql默认编码是Latin1，不支持中文，要想修改默认编码，需要修改my.ini文件

[client]增加default-character-set=utf8

[mysql]增加default-character-set=utf8

[mysqld]增加

character_set_server=utf8

init_connect='SET NAMES utf8'

ref: https://blog.csdn.net/kakarot5/article/details/40088137

mysql> show variables like 'char_%';
+--------------------------+----------------------------+
| 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     | latin1                     |
| character_set_system     | utf8                       |
| character_sets_dir       | /usr/share/mysql/charsets/ |
+--------------------------+----------------------------+
8 rows in set (0.01 sec)

mysql> set names utf8;
Query OK, 0 rows affected (0.00 sec)

mysql> show variables like 'char_%';
+--------------------------+----------------------------+
| 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     | latin1                     |
| character_set_system     | utf8                       |
| character_sets_dir       | /usr/share/mysql/charsets/ |
+--------------------------+----------------------------+
8 rows in set (0.00 sec)