解决POI导出Excel表，中文文件名出现乱码的问题

之前遇到java使用poi导出Excel时候，导出中文文件名称会出现乱码的问题，特来记录一下。有需要的同学可以试一试！！！

String filename="学生信息.xls";
filename = filename.split("\.")[0];
filename = new String(filename.getBytes(), "iso8859-1") + ".xls";
response.setContentType("application/octet-stream");
response.setHeader("Content-disposition", "attachment;filename=" + filename);
response.setContentType("application/x-download");
response.flushBuffer();
response.setCharacterEncoding("UTF-8");
response.addHeader("Content-Length", "" + bytes.length);
response.setHeader("Content-Type", contentType);