现在把它分享出来吧，

第一步：进入安装Tomcat文件夹 >> colmx.revres 到nf 目录>> 找到 server.xml

修改server.xml配置文件，在Server标签中加入URIEncoding="UTF-8"

<Server URIEncoding="UTF-8" port="8005" shutdown="SHUTDOWN">

第二步：建立一个.filter的类，实现过滤字符

Fil .java

package sun.filter;
import java.io.IOException;
import javax.servlet.;

public class Fil implements Filter {

 public void destroy() 
         {
            }

 public void doFilter(ServletRequest arg0, ServletResponse arg1,
   FilterChain arg2) throws IOException, ServletException
            {
                  // 将Request 、Response都转化为utf-8编码
                   arg0.setCharacterEncoding("UTF-8");  
                  arg1.setCharacterEncoding("UTF-8");                
                  arg2.doFilter(arg0, arg1);
            }

 public void init(FilterConfig arg0) throws ServletException
          {
              }        
}

第三步： 在网站配置文件web.xml, 为了更好理解把我的给帖出来

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
 xmlns="http://java.sun.com/xml/ns/j2ee"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
 http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"&gt;
 
  <filter>
  <filter-name>encoding</filter-name>
  <filter-class>sun.filter.Fil</filter-class>
  </filter>
 
  <servlet>
    <servlet-name>userpass</servlet-name>
    <servlet-class>sun.sta.userpass</servlet-class>
  </servlet>

<filter-mapping>
     <filter-name>encoding</filter-name>
      <url-pattern>/</url-pattern>
    </filter-mapping>
   
  <servlet-mapping>
    <servlet-name>userpass</servlet-name>
    <url-pattern>/userpass</url-pattern>
  </servlet-mapping>

  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
</web-app>