Spring + Hibernate + MySQL中文乱码问题
Posted scruffybear
tags:
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概要
在配置Spring + Hibernate存入mysql数据库时有中文乱码的问题,尝试了解决办法。
问题
中文乱码解决起来有时会找不到头绪,必须要把各个配置都做正确才能解决,以下是几个注意点。
解决
MySQL的配置连接
在dispatcherServlet-servlet.xml里的设置尝试了多种配置,如下:
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
<property name="driverClassName">
<value>com.mysql.jdbc.Driver</value>
</property>
<property name="url">
<value>jdbc:mysql://localhost:3306/myNews?useUnicode=true&characterEncoding=utf-8</value>
<!-- <value>jdbc:mysql://localhost/myNews?useUnicode=true&characterEncoding=GBK</value>-->
<!-- <value>jdbc:mysql://localhost:3306/myNews?useUnicode=true&characterEncoding=utf8mb4</value>-->
<!-- <value>jdbc:mysql://localhost:3306/myNews?useUnicode=true&characterEncoding=utf8mb4_unicode_ci</value> -->
</property>
<property name="username">
<value>root</value>
</property>
<property name="password">
<value>P@ssw0rd</value>
</property>
</bean>
web.xml的配置
设置SetCharacterEncodingFilter方法
<filter>
<filter-name>setEncodingFilter</filter-name>
<filter-class>com.SetCharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<!-- <param-value>utf-8</param-value> -->
<!-- <param-value>GBK</param-value> -->
<param-value>utf-8</param-value>
</init-param>
</filter>
SetCharacterEncodingFilter 实现 Filter
/**
* Select and set (if specified) the character encoding to be used to
* interpret request parameters for this request.
*
* @param request The servlet request we are processing
* @param result The servlet response we are creating
* @param chain The filter chain we are processing
*执行过滤的方法
* @exception IOException if an input/output error occurs
* @exception ServletException if a servlet error occurs
*/
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain)
throws IOException, ServletException
// Conditionally select and set the character encoding to be used
if (ignore || (request.getCharacterEncoding() == null))
String encoding = selectEncoding(request);
if (encoding != null)
request.setCharacterEncoding(encoding);
// Pass control on to the next filter
chain.doFilter(request, response);
/**
* Place this filter into service.
*初始化方法
* @param filterConfig The filter configuration object
*/
public void init(FilterConfig filterConfig) throws ServletException
this.filterConfig = filterConfig;
this.encoding = filterConfig.getInitParameter("encoding");
String value = filterConfig.getInitParameter("ignore");
if (value == null)
this.ignore = true;
else if (value.equalsIgnoreCase("true"))
this.ignore = true;
else if (value.equalsIgnoreCase("yes"))
this.ignore = true;
else
this.ignore = false;
/**
* Select an appropriate character encoding to be used, based on the
* characteristics of the current request and/or filter initialization
* parameters. If no character encoding should be set, return
* <code>null</code>.
* <p>
* The default implementation unconditionally returns the value configured
* by the <strong>encoding</strong> initialization parameter for this
* filter.
*
* @param request The servlet request we are processing
*/
protected String selectEncoding(ServletRequest request)
return (this.encoding);
MySQL数据库配置
my.ini里配置
character_set_server=utf8
并重启MySQL
MySQL数据库的整体Collation设置为utf8_bin
MySQL数据库的各中文字段设置Type为varchar,Collation设置为utf8_bin
参考
MysqlDataTruncation: Data truncation: Incorrect string value: ‘\\xF0\\x9D\\x90\\xB6"#…’ for column
100% solution java.sql.SQLException : Unsupported character encoding ‘utf8mb4’.
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