Java匯出txt檔案的方法_java

本文執行個體講述了Java匯出txt檔案的方法。分享給大家供大家參考。具體如下：

例子一

/** * export匯出檔案 */ @RequestMapping(value="/grab/export/csv",method={RequestMethod.GET}) public void exportCsv(HttpServletRequest request,HttpServletResponse response){  String userId = ServletRequestUtils.getStringParameter(request, "userId", "test");   ModelAndView mav=new ModelAndView();   SqlVideoList sqlVideoList =new SqlVideoList();   List<VideoListModel> list = new ArrayList<VideoListModel>();   try {    list = sqlVideoList.selectSuccessDate(userId);   } catch (SQLException e) {    // TODO Auto-generated catch block    e.printStackTrace();   }   //匯出txt檔案   response.setContentType("text/plain");    String fileName="videolist";   try {    fileName = URLEncoder.encode("videolist", "UTF-8");   } catch (UnsupportedEncodingException e1) {    // TODO Auto-generated catch block    e1.printStackTrace();   }    response.setHeader("Content-Disposition","attachment; filename=" + fileName + ".txt");    BufferedOutputStream buff = null;     StringBuffer write = new StringBuffer();     String enter = "\r\n";     ServletOutputStream outSTr = null;     try {       outSTr = response.getOutputStream(); // 建立       buff = new BufferedOutputStream(outSTr);     //把內容寫入檔案     if(list.size()>0){      for (int i = 0; i < list.size(); i++) {       write.append(list.get(i).getUrl()+",");       write.append(list.get(i).getTitle());       write.append(enter);        }     }     buff.write(write.toString().getBytes("UTF-8"));       buff.flush();       buff.close();     } catch (Exception e) {      e.printStackTrace();     } finally {      try {       buff.close();       outSTr.close();      } catch (Exception e) {       e.printStackTrace();      }     } }

例子二：

/**  * 匯出VIP兌換碼。  * @throws UnsupportedEncodingException  */ @RequestMapping(value = "/{exchangeId}/{packageId}/export", method = RequestMethod.GET) public void writeToTxt(@PathVariable String exchangeId,@PathVariable String packageId, HttpServletRequest request,HttpServletResponse response) throws UnsupportedEncodingException {  String schoolId = this.getSchoolId(request); // 網校ID  // 擷取網校的VIP套餐相應的兌換碼  VipCodeExample example=new VipCodeExample();  example.createCriteria().andSchoolIdEqualTo(schoolId).andPackageIdEqualTo(packageId).andExchangeIdEqualTo(exchangeId);  List<VipCode> vipCodes = vipExchangeManager.getVipCode(example);  if(vipCodes.size()>0){    response.setContentType("text/plain");// 一下兩行關鍵的設定   response.addHeader("Content-Disposition",      "attachment;filename="+java.net.URLEncoder.encode(vipCodes.get(0).getName(),"UTF-8")+".txt");     // filename指定預設的名字   VipCode vipcode=new VipCode();    BufferedOutputStream buff = null;    StringBuffer write = new StringBuffer();    String tab = "  ";    String enter = "\r\n";    ServletOutputStream outSTr = null;    try {     outSTr = response.getOutputStream();// 建立     buff = new BufferedOutputStream(outSTr);     for (int i = 0; i < vipCodes.size(); i++) {      vipcode = vipCodes.get(i);      write.append(i+1); //序號      write.append(tab);      write.append(vipcode.getExchangeCode());      write.append(tab);      if("normal".equals(vipcode.getStatus())){       write.append("正常");        }else{       write.append("已兌換");        }      write.append(enter);     }     buff.write(write.toString().getBytes("UTF-8"));     buff.flush();     buff.close();    } catch (Exception e) {     e.printStackTrace();    } finally {     try {      buff.close();      outSTr.close();     } catch (Exception e) {      e.printStackTrace();     }    }   } }

希望本文所述對大家的java程式設計有所協助。