MySQL抛出错误的字符串值错误

Question

我正在尝试将以下推文存储到longtext列/ utf8 charset/MySQL 5.5中.带有MyISAM存储的数据库.

我们也尝试过utf8mb4,utf16,utf32字符集,但无法解决这个问题.

tweet="@Dorable_Dimples: Okay enough of those #IfYouWereMines I'm getting dep
ressed. #foreveralone ?" lol yes

mysql> ALTER DATABASE foo CHARACTER SET utf8 COLLATE utf8_bin;

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 | /rdsdbbin/mysql-5.5.12.R1/share/charsets/ |

Incorrect string value: '\xF0\x9F\x98\x94\xE2\x80...' for column 'tweet' at row 1

Unable to store tweet "@Dorable_Dimples: Okay enough of those #IfYouWereM
ines I'm getting depressed. #foreveralone ?" lol yes
javax.persistence.PersistenceException: org.hibernate.exception.GenericJDBCExcept
ion: could not insert
at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityMana
gerImpl.java:1387)
at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityMana
gerImpl.java:1315)
at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityMana
gerImpl.java:1321)
at org.hibernate.ejb.AbstractEntityManagerImpl.persist(AbstractEntityMana
gerImpl.java:843)
at java.util.TimerThread.mainLoop(Timer.java:512)
at java.util.TimerThread.run(Timer.java:462)

at org.hibernate.exception.SQLStateConverter.handledNonSpecificException(
SQLStateConverter.java:140)
at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.ja
va:128)
at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelpe
r.java:66)
at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(Abstra
ctReturningDelegate.java:64)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(Abstract
EntityPersister.java:2345)
at org.hibernate.persister.entity.AbstractEntityPersister.insert(Abstract
EntityPersister.java:2852)
at org.hibernate.action.EntityIdentityInsertAction.execute(EntityIdentity
InsertAction.java:71)
at org.hibernate.engine.ActionQueue.execute(ActionQueue.java:273)
at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplica
te(AbstractSaveEventListener.java:320)
at org.hibernate.event.def.AbstractSaveEventListener.performSave(Abstract
SaveEventListener.java:203)
at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(
AbstractSaveEventListener.java:129)
at org.hibernate.ejb.event.EJB3PersistEventListener.saveWithGeneratedId(E
JB3PersistEventListener.java:69)
at org.hibernate.event.def.DefaultPersistEventListener.entityIsTransient(
DefaultPersistEventListener.java:179)
at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultP
ersistEventListener.java:135)
at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultP
ersistEventListener.java:61)
at org.hibernate.impl.SessionImpl.firePersist(SessionImpl.java:808)
at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:782)
at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:786)
at org.hibernate.ejb.AbstractEntityManagerImpl.persist(AbstractEntityMana
gerImpl.java:837)
... 5 more
Caused by: java.sql.SQLException: Incorrect string value: '\xF0\x9F\x98\x94\xE2\x
80...' for column 'tweet' at row 1
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1073)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3609)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3541)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2002)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2163)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2624)
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.jav
a:2127)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:
2427)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:
2345)
at com.mysql.jdbc.PreparedStatement.executeUpdate(PreparedStatement.java:
2330)
at org.hibernate.id.IdentityGenerator$GetGeneratedKeysDelegate.executeAnd
Extract(IdentityGenerator.java:94)
at org.hibernate.id.insert.AbstractReturningDelegate.performInsert(Abstra
ctReturningDelegate.java:57)

Answer 1

这是导致问题的推文末尾的角色.

它看起来像一个'表情符号'字符又名日本笑脸,但它不会在Chrome或Safari中显示给我.

在某些版本的MySQL中存在存储4字节utf字符的已知问题.显然你必须使用utf8mb4来表示4字节的UTF字符,因为普通的utf8字符集只能表示长度最多3个字节的字符,所以不能存储基本多语言平面之外的字符.

http://dev.mysql.com/doc/refman/5.5/en/charset-unicode-utf8mb4.html

这对我来说是新闻,因为它基本上意味着MySQL中的utf8数据类型并不是真正合适的utf8.

有如何处理这里的建议如何 在mysql中插入utf-8 mb4字符(表情符号在ios5中)？包含:

"还要确保你的应用层将其数据库连接的字符集设置为utf8mb4.仔细检查这是否真的发生 - 如果你运行的是所选框架的mysql客户端库的旧版本,它可能没有使用utf8mb4支持编译并且它不会正确设置charset.如果没有,你可能需要更新它或自己编译它"

如果您使用的是Connector/J,则需要在连接配置中设置character_set_server = utf8mb4.

您的所有字符集都应该是utf8mb4,您可能已尝试但目前尚未设置.

Answer 2

我喜欢Danask57的答案 - 这是正确的,也是'正确'的方式.(我自己投了票)

但是,另一个快速而肮脏的解决方案是更改架构.使用varbinary或binary来存储tweet字符串:

http://dev.mysql.com/doc/refman/5.0/en/binary-varbinary.html

好处是你不会遇到任何字符集问题.

缺点是您的字符串比较和排序将丢失,您将无法对列进行全文索引.

只是一个建议,但这不是'正确'的答案,只是一个快速而肮脏的解决方案,让事情有效.

Answer 3

我有这个问题.要解决这个问题,请按照以下优秀指南将mysql服务器端的默认编码更改为utf8mb4:http://mathiasbynens.be/notes/mysql-utf8mb4 .

请记住在更改配置文件后重新启动mysqld服务.

对我来说,我还需要将mysql jdbc驱动程序更新到版本5.1.18(从版本5.1.6).我已经阅读过某个地方,你必须使用至少版本5.1.14的mysql jdbc驱动程序才能很好地使用utf8mb4字符编码.希望这可以帮助!

Answer 4

为什么示例中的引号外有文本 - 即“lol yes”

tweet="@Dorable_Dimples: Okay enough of those #IfYouWereMines I'm getting depressed. #foreveralone ?" lol yes