Hibernate+mysql 中文问题解决方案.

1. mysql安装时设置字符集utf-8, jdbc驱动3.0.15以上.
2. hibernate配置文件中,加上属性
<property name="connection.useUnicode">true</property>
<property name="connection.characterEncoding">UTF-8</property>

3. web.xml设置Filter
=================================================

< filter >
   < filter-name >
   Set Web Application Character Encoding
   filter-name>
   < filter-class > cn.com.commnet.util.SetEncodeFilter filter-class>
   < init-param >
    < param-name > defaultencoding param-name>
    < param-value > UTF-8 param-value>
   init-param>
  filter>
  < filter-mapping >
   < filter-name >
   Set Web Application Character Encoding
   filter-name>
   < url-pattern > /* url-pattern>
  filter-mapping>

=============================================
SetEncodeFilter.java

public   class  SetEncodeFilter implements Filter  {

    protected FilterConfig filterConfig = null;

    protected String defaultEncoding = null;

    /**//* (non-Javadoc)
     * @see javax.servlet.Filter#init(javax.servlet.FilterConfig)
     */
    public void init(FilterConfig arg0) throws ServletException {
        // TODO Auto-generated method stub
        this.filterConfig = arg0;
        this.defaultEncoding = filterConfig.getInitParameter("defaultencoding");
    }

    /**//* (non-Javadoc)
     * @see javax.servlet.Filter#doFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse, javax.servlet.FilterChain)
     */
    public void doFilter(
        ServletRequest request,
        ServletResponse response,
        FilterChain chain)
        throws IOException, ServletException {
        // TODO Auto-generated method stub
        request.setCharacterEncoding(selectEncoding(request));
        chain.doFilter(request, response);
    }


    public void destroy() {
        
        this.defaultEncoding = null;
        this.filterConfig = null;
    }


    protected String selectEncoding(ServletRequest request) {

        return this.defaultEncoding;
    }

}