日期:2014-05-16 浏览次数:20611 次
/** * List导出为csv格式 * @param arrayList * @param file 已经创建好的file文件 * @throws Exception */ private void exportFile(List<String[]> arrayList,File file) throws Exception{ OutputStream out = new FileOutputStream(file,true); for(String [] arr:arrayList){ for(int i = 0 ; i < arr.length ; i ++){ out.write(arr[i]==null?"".getBytes():arr[i].getBytes()); if(i<arr.length-1)out.write(",".getBytes()); } out.write('\r'); // \r\n表示换行 out.write('\n'); } out.close(); }
public static void ExportCsv(String fileName,List<String[]> list,HttpServletResponse response){ PrintWriter out = null; CSVWriter writer = null; List<String[]> lines = new ArrayList<String[]>(); lines.addAll(list); try{ response.setHeader("Content-Disposition", "attachment; filename=\"" + new String(fileName.getBytes("gb2312"), "iso8859-1") + ".csv" + "\""); response.setCharacterEncoding("Gb2312"); response.setContentType("text/plain;charset=Gb2312"); out = response.getWriter(); writer = new CSVWriter(out); writer.writeAll(lines); writer.flush(); }catch (IOException e){ error_logger.error("CsvExport.ExportCsv() error!",e); } catch (Exception e){ error_logger.error("CsvExport.ExportCsv() error!",e); }finally{ try{ writer.close(); out.close(); }catch(Exception ex){} } }
/* * 一键备份指定表 * @deprecated * @return */ public String backupTable_old(){ //存放备份文件的路径 String backup_path = getProps("backup_file_path"); //配置文件中获取数据库连接信息 String user_name = getProps("user_name"); String user_psw = getProps("user_psw"); String db_name = getProps("db_name"); String host_ip = getProps("host_ip"); //获取文件保存备份路径,如果不存在,则先创建目录 String saveFileDir=backup_path + ab + "/"; File dir=new File(saveFileDir); if(!dir.exists())dir.mkdirs(); backup_path = saveFileDir + "backup_"+ab+"_"+dataFormat.format(new Date())+".sql"; //需要备份的表,目前为已定义好的表 String tableClass = TB_CLASS + ab; String tableClassUser = TB_CLASS_USER + ab; String black = " "; String allTable = black + tableClass + black + tableClassUser; StringBuffer sb = new StringBuffer(); //拼接字符串,mysqldump命令。 sb.append("mysqldump").append(" -h ").append(host_ip).append(" -u ").append(user_name) .append(" -p").append(user_psw).append(black).append(db_name).append(" --add-drop-table") .append(" -t ").append(allTable).append(" --result-file=").append(backup_path); String dumpSQL = sb.toString(); System.out.println(dumpS