解决MySQL中的乱码问题

时间：2007-10-16 来源：sdaulibin

   最近写一些注册页面的代码（J2EE开发），在MySQL中老是乱码，请教了一下哥们，找到了一个可行的方法，在你的项目中加入一个filter包，新建一个如下的类： package filter; import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse; public class CharsetEncodingFilter implements Filter {
    protected String encoding = null;

    protected FilterConfig filterConfig = null;
    protected boolean ignore = true;
    public void destroy() {         this.encoding = null;
        this.filterConfig = null;     }
    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);

            //request.setCharacterEncoding("UTF-8");
    }
        //response.setCharacterEncoding("utf8");
// Pass control on to the next filter
        chain.doFilter(request, response);     }
    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;     }
    protected String selectEncoding(ServletRequest request) {         return (this.encoding);     }
}
再次进行注册时，乱码就可消失！！！