How to export txt file in Java

The example in this article describes the method of exporting txt files in Java. Share it with everyone for your reference. The details are as follows:

Example 1

/** 
* export导出文件 
*/
@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(); 
  } 
  //导出txt文件 
  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); 
    //把内容写入文件 
    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();   
   }   
  } 
}

Example 2:

/** 
 * 导出VIP兑换码。 
 * @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); // 网校ID 
 // 获取网校的VIP套餐相应的兑换码 
 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");// 一下两行关键的设置
   response.addHeader("Content-Disposition", 
     "attachment;filename="+java.net.URLEncoder.encode(vipCodes.get(0).getName(),"UTF-8")+".txt");
     // filename指定默认的名字
   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); //序号 
     write.append(tab); 
     write.append(vipcode.getExchangeCode()); 
     write.append(tab); 
     if("normal".equals(vipcode.getStatus())){ 
      write.append("正常");   
     }else{ 
      write.append("已兑换");   
     } 
     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(); 
    } 
   } 
  } 
}

I hope this article will be helpful to everyone’s java programming.

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