package com.java1234.util;import java.io.OutputStream;import java.io.PrintWriter;import javax.servlet.http.HttpServletResponse;import org.apache.poi.ss.usermodel.Workbook;public class ResponseUtil {    public static void write(HttpServletResponse response,Object o)throws Exception{        response.setContentType("text/html;charset=utf-8");        PrintWriter out=response.getWriter();        out.print(o.toString());        out.flush();        out.close();    }        public static void export(HttpServletResponse response,Workbook wb,String fileName)throws Exception{        response.setHeader("Content-Disposition", "attachment;filename="+new String(fileName.getBytes("utf-8"),"iso8859-1"));        response.setContentType("application/ynd.ms-excel;charset=UTF-8");        OutputStream out=response.getOutputStream();        wb.write(out);        out.flush();        out.close();    }}