Java导出txt文件的方法

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<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();   
   }   
  } 
}

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<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(); 
    } 
   } 
  } 
}

希望本文所述对大家的java程序设计有所帮助。