使用JSPsmartUpload组件上传文件，文件名出现中文字符，下载文件，文件名出现中文字符，都会导致文件名在浏览器出现乱码，自己修改了JSPsmartUpload组件原文件，编译打包成.jar文件。
使用说明：
一、解决上传出现乱码问题
我的WEB项目编码一致为“GBK”，为WEB项目编写一个编码过滤器 package com.model.filter; import java.io.IOException; import java.io.UnsupportedEncodingException; import java.util.logging.Level; import java.util.logging.Logger; import javax.servlet.Filter; import javax.servlet.ServletException; import javax.servlet.ServletRequest; import javax.servlet.ServletResponse; import javax.servlet.FilterChain; import javax.servlet.FilterConfig; import javax.servlet.http.HttpServletRequest; public class CharacterEncodingFilter implements Filter { private FilterConfig config; private String encoding = "UTF-8"; public void init(FilterConfig config) { this.config = config; String encoding = config.getInitParameter("encoding"); if (encoding != null) { this.encoding = encoding; System.out.println("获取编码成功！！"); } else { System.out.println("无法获取编码，采用默认的UTF-8"); } } public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) { try { HttpServletRequest hrequest = (HttpServletRequest) request; hrequest.setCharacterEncoding(this.encoding); } catch (UnsupportedEncodingException ex) { Logger.getLogger(CharacterEncodingFilter.class.getName()).log(Level.SEVERE, null, ex); } try { chain.doFilter(request, response); } catch (IOException ex) { Logger.getLogger(CharacterEncodingFilter.class.getName()).log(Level.SEVERE, null, ex); } catch (ServletException ex) { Logger.getLogger(CharacterEncodingFilter.class.getName()).log(Level.SEVERE, null, ex); } } public void destroy() { } } 过滤器在XML配置文件里需要注册，如下： <filter> <filter-name>CharacterEncodingFilter</filter-name> <filter-class>com.model.filter.CharacterEncodingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>gb2312</param-value> </init-param> </filter> <filter-mapping> <filter-name>CharacterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> 在JSP上传页面，编码设置为“GBK” <%-- Document : upload Created on : 2010-8-5, 18:36:04 Author : Gavin --%> <%@page contentType="text/html" pageEncoding="gb2312"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <title>JSP Page</title> </head> <body> <h1 align="center">Test File Upload</h1> <p> <form action="upload" enctype="multipart/form-data" name="uploadform" method="post" > 文件路径1：<br> <input type="file" name="file1" size="60" /><br> <textarea rows="5" cols="69" name="fileinfo1"></textarea><br> <input type="file" name="file2" size="60" /><br> <textarea rows="5" cols="69" name="fileinfo2"></textarea><br> <input type="submit" value="提交" > <input type="reset" value="重置"> </form> </body> </html>二、在JSPsmartUpload组件中增加下载编码，具体过程不再赘述，提供修改编译打包的.jar文件，可直接使用。
相关资源：jspsmartupload上传下载，已修改过源代码！