爲什麼mysql不能識別LONGTEXT dataype上的Unicode字符？

Question

我有

mysql>SHOW VARIABLES LIKE "%version%"; 

+-------------------------+-------------------------+ 
| Variable_name   | Value     | 
+-------------------------+-------------------------+ 
| innodb_version   | 5.5.31     | 
| protocol_version  | 10      | 
| slave_type_conversions |       | 
| version     | 5.5.31-0ubuntu0.12.10.1 | 
| version_comment   | (Ubuntu)    | 
| version_compile_machine | x86_64     | 
| version_compile_os  | debian-linux-gnu  | 
+-------------------------+-------------------------+ 

和

mysql> show variables like 'character%'; 

+--------------------------+----------------------------+ 
| Variable_name   | Value      | 
+--------------------------+----------------------------+ 
| character_set_client  | utf8      | 
| character_set_connection | utf8      | 
| character_set_database | utf8      | 
| character_set_filesystem | utf8      | 
| character_set_results | utf8      | 
| character_set_server  | utf8      | 
| character_set_system  | utf8      | 
| character_sets_dir  | /usr/share/mysql/charsets/ | 
+--------------------------+----------------------------+ 

數據庫MySQL數據庫，當我插入一個非拉丁語的VARCHAR，它工作正常但是當我嘗試插入的LONGTEXT鍵入它顯示我「？ ?????」

我該如何解決這個問題。

我「米使用Java，休眠JSF 2.0 Spring框架

Answer 1

嘗試在初始化連接到數據庫後，運行此查詢：。

SET NAMES UTF8 

Answer 2

我沒有提到前面，我也有。SRING框架工作的解決辦法是在我的web.xml中添加此過濾器希望這幫助其他人

enter code here 


<filter> 
<filter-name>encoding-filter</filter-name> 
<filter-class> 
      org.springframework.web.filter.CharacterEncodingFilter 
    </filter-class> 
<init-param> 
    <param-name>encoding</param-name> 
<param-value>UTF-8</param-value> 
</init-param> 
</filter> 
<filter-mapping> 
<filter-name>encoding-filter</filter-name> 
<url-pattern>/*</url-pattern> 
</filter-mapping>