替换WORD/EXCEL模板文档中的内容并下载java

import java.io.BufferedInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Iterator;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hwpf.HWPFDocument;
import org.apache.poi.hwpf.model.FieldsDocumentPart;
import org.apache.poi.hwpf.usermodel.Field;
import org.apache.poi.hwpf.usermodel.Fields;
import org.apache.poi.hwpf.usermodel.Range;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.usermodel.WorkbookFactory;

/*
     * 案件模板下载
     * 
     * */
     public static void generateFile(HttpServletRequest request,HttpServletResponse response){
          Map<String, String> map = FastMap.newInstance();
          String calendarYear = request.getParameter("calendarYear");
          map.put("201X", calendarYear);        //需要替换的内容    key为被替换者
          String engFileTemplateName = "C:\Users\NUH-25\Desktop\ENG20160131.xlsx";     //被替换模板路径
          String fileType = engFileTemplateName.substring(engFileTemplateName.lastIndexOf(".") + 1, engFileTemplateName.length());
         if("xls".equals(fileType)||"xlsx".equals(fileType))
             readwriteExcel(request,response,map,engFileTemplateName);
         else if("doc".equals(fileType)||"docx".equals(fileType))
             readwriteWord(request,response,map,engFileTemplateName);
     }  
     
     
     public static void readwriteWord(HttpServletRequest request,HttpServletResponse response,Map<String, String> map,String engFileTemplateName){  
            FileInputStream in;  
            HWPFDocument hdt = null;  
            try {  
                in = new FileInputStream(new File(engFileTemplateName));  
                hdt = new HWPFDocument(in);  
            } catch (Exception e1) {  
                e1.printStackTrace();  
            }  
              
            Fields fields = hdt.getFields();  
            Iterator<Field> it = fields.getFields(FieldsDocumentPart.MAIN).iterator();  
          /*  while(it.hasNext()){  
                System.out.println(it.next().getType());  
            }  */
      
            //替换读取到的word模板内容的指定字段  
            Range range = hdt.getRange();  
      
            for (Map.Entry<String,String> entry:map.entrySet()) {  
                range.replaceText(entry.getKey(),entry.getValue());  
            }  
      
            //输出word内容文件流，提供下载  
            response.reset();  
            response.setContentType("application/x-msdownload");  
            response.setCharacterEncoding("gbk");
            String fileType = engFileTemplateName.substring(engFileTemplateName.lastIndexOf(".") + 1, engFileTemplateName.length());
            String fileName = ""+System.currentTimeMillis()+"."+fileType;  
            response.addHeader("Content-Disposition", "attachment; filename="+fileName);
            ByteArrayOutputStream ostream = new ByteArrayOutputStream();  
            OutputStream servletOS = null;  
            try {  
                servletOS = response.getOutputStream();  
                hdt.write(ostream);  
                servletOS.write(ostream.toByteArray());  
                servletOS.flush();  
                servletOS.close();  
            } catch (Exception e) {  
                e.printStackTrace();  
            }   
        } 
     
     
     /**
         * 
         * 案件附件模板excel修改下载
         * 
         * @param request
         * 
         * @param response
         *            
         * @throws IOException
         */
        public static void readwriteExcel(HttpServletRequest request,HttpServletResponse response,Map<String, String> map,String engFileTemplateName){
           try
            {
                String fileType = engFileTemplateName.substring(engFileTemplateName.lastIndexOf(".") + 1, engFileTemplateName.length());
                FileInputStream in = new FileInputStream(new File(engFileTemplateName));;
                InputStream inputStream = new BufferedInputStream(in);
                Workbook workbook = null;
               
                if (fileType.equals("xls")) {
                    workbook = new HSSFWorkbook(inputStream);
                  } else if (fileType.equals("xlsx")) {
                      //workbook = new XSSFWorkbook(inputStream);
                      workbook = WorkbookFactory.create(inputStream);
                  } else {
                    System.out.println("您输入的excel格式不正确");
                  }
                Iterator<Sheet> iterator = workbook.sheetIterator();
                while(iterator.hasNext()){
                    Sheet sheet = iterator.next();
                     for(Row row:sheet){
                         for(Cell cell:row){
                             if(1==cell.getCellType()){
                                 String cellString = cell.getStringCellValue();
                                 for (Map.Entry<String,String> entry:map.entrySet()) { 
                                     if(cellString.contains(entry.getKey())){
                                        String newString = cellString.replace(entry.getKey(), entry.getValue());
                                        cell.setCellValue(newString);
                                     }
                                 }
                             } 
                         }
                    }
                }    
                //输出excel内容文件流，提供下载  
                response.reset();  
                response.setContentType("application/x-msdownload");  
                response.setCharacterEncoding("gbk");
                String fileName = ""+System.currentTimeMillis()+"."+fileType;  
                response.addHeader("Content-Disposition", "attachment; filename="+fileName);
                ByteArrayOutputStream ostream = new ByteArrayOutputStream();  
                OutputStream servletOS = null;  
                try {  
                    servletOS = response.getOutputStream();  
                    workbook.write(ostream);  
                    servletOS.write(ostream.toByteArray());  
                    servletOS.flush();  
                    servletOS.close();  
                } catch (Exception e) {  
                    e.printStackTrace();  
                }  
        } catch (Exception e)
        {
            e.printStackTrace();
            Debug.logError(e, module);
        }
    }