Struts2文件下載中文亂碼解決

1. 設置Tomcat編碼格式爲UTF-8:修改tomcat-->conf-->server.xml文件，設置URIEncoding爲UTF-8，不設置時默認值爲ISO8859-1

   <Connector port="8080" protocol="HTTP/1.1"
                  connectionTimeout="20000"
                  redirectPort="8443" URIEncoding="UTF-8"/>
   

   <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" URIEncoding="UTF-8"/>

2. 項目及Java文件，JSP文件格式固然也要是UTF-8

3. java代碼

   /**
        * 設置下載文件名
        * @param downloadFileName
        */
       public void setDownloadFileName(String downloadFileName) {
           try {
               HttpServletRequest request=ServletActionContext.getRequest();
               if (request.getHeader("User-Agent").toLowerCase()
                       .indexOf("firefox") > 0) {
                   this.downloadFileName = "=?UTF-8?B?"
                           + (new String(org.apache.commons.codec.binary.Base64.encodeBase64(downloadFileName
                                   .getBytes("UTF-8")))) + "?=";
               } else {
                   this.downloadFileName = java.net.URLEncoder.encode(
                           downloadFileName, "UTF-8");
               }
           } catch (UnsupportedEncodingException e) {
               e.printStackTrace();
           }
       }