本文实例讲述了Java导出txt文件的方法。分享给大家供大家参考。具体如下：

例子一

/**

* 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 list = new ArrayList();

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();

}

}

}

例子二：

/**

* 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 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();

}

}

}

}

希望本文所述对大家的java程序设计有所帮助。