在web.xml文件中添加：

<filter>
??<filter-name>Set Character Encoding</filter-name>
??<filter-class>
???com.SetCharacterEncodingFilter
??</filter-class>
?</filter>
?<filter-mapping>
??<filter-name>Set Character Encoding</filter-name>
??<url-pattern>*.do</url-pattern>
?</filter-mapping>

?SetCharacterEncodingFilter? 類代碼如下：

package com.db;

/**
?* @author?cool
?*
?*/

import java.io.IOException;
import javax.servlet.*;

public class SetCharacterEncodingFilter implements Filter {

?public void init(FilterConfig config) throws ServletException {

?}

?public void destroy() {

?}

?public void doFilter(ServletRequest request, ServletResponse response,
???FilterChain chain) throws IOException, ServletException {
??request.setCharacterEncoding("GB2312");
??chain.doFilter(request, response);
?}
}

前提是你必須要設置好eclipse和myeclipse的字符集，將所有字符集都設為UTF-8，見我的文章，這樣就不用在任何地方

犯愁亂碼了。