接收参数时，传递的值变成了？?¤???? ，乱码？老问题了，自己做到才想重视。
我是用BEAN写的， "jdbc:mysql://localhost:3306/yarsye?useUnicode=true&characterEncoding=GBK ", "root ", "111 "这句在BEAN里有，
现在在参数传递时就有问题了，传递语句是： <a   href= "lamp_products.jsp?na= <%=na%> " </a>

接收语句是：String   name=request.getParameter( "na ");


------解决方案--------------------
最方便的方法,tomcat配置文件修改下

<Connector port= "8080 " protocol= "HTTP/1.1 "
maxThreads= "150 " connectionTimeout= "20000 "
redirectPort= "8443 "/>

后面加上这一个
URIEncoding= "gb2312 "
------解决方案--------------------
如果请求的参数过多，使用起来代码显得臃肿。既然你用的是Tomcat，这个问题tomcat已经实现了一个转换中文的过滤器，配置起来也相当简单。
源码如下：
/*
* Copyright 2004 The Apache Software Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License ");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS " BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

package filters;


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;
import javax.servlet.UnavailableException;


/**
* <p> Example filter that sets the character encoding to be used in parsing the
* incoming request, either unconditionally or only if the client did not
* specify a character encoding. Configuration of this filter is based on
* the following initialization parameters: </p>
* <ul>
* <li> <strong> encoding </strong> - The character encoding to be configured
* for this request, either conditionally or unconditionally based on
* the <code> ignore </code> initialization parameter. This parameter
* is required, so there is no default. </li>
* <li> <strong> ignore </strong> - If set to "true ", any character encoding
* specified by the client is ignored, and the value returned by the
* <code> selectEncoding() </code> method is set. If set to "false,
* <code> selectEncoding() </code> is called <strong> only </strong> if the
* client has not already specified an encoding. By default, this
* parameter is set to "true ". </li>
* </ul>
*
* <p> Although this filter can be used unchanged, it is also easy to
* subclass it and make the <code> selectEncoding() </code> method more
* intelligent about what encoding to choose, based on characteristics of
* the incoming request (such as the values of the <code> Accept-Language </code&