在做微信公众号开发过程中,经常碰到用户的昵称中有表情,在MySQL保存时常用的utf8 字符集根本无法存储表情,提示错误如下:java.sql.SQLException: Incorrect string value: '\xF0\x9F\x92\x94' for column 'nick_name' at row 1
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1073)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3593)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3525)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1986)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2140)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2620)
at com.mysql.jdbc.StatementImpl.executeUpdate(StatementImpl.java:1662)
at com.mysql.jdbc.StatementImpl.executeUpdate(StatementImpl.java:1581)
一、数据库默认字符集由utf8 更改为utf8mb4,对应的表默认字符集也更改为utf8mb4 已经存储表情的字段默认字符集也做了相应的调整。
1、修改数据库:ALTER DATABASE test_opr CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci;
2、修改表:ALTER TABLE t_user CONVERT TO CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
3、修改表字段:ALTER TABLE t_user CHANGE nick_name VARCHAR(191) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
二、修改MySQL配置文件
新增如下参数:[client]
default-character-set = utf8mb4
[mysql]
default-character-set = utf8mb4
[mysqld]
character-set-client-handshake = FALSE
character-set-server = utf8mb4
collation-server = utf8mb4_unicode_ci
init_connect='SET NAMES utf8mb4'