java另存为下载xml

/** * 导出xml文件 * @param picDir * picDir * @param fileName * fileName * @param list * list * @param names * names * @param response * response */ @SuppressWarnings("unchecked") public static void writerXml(File picDir,String fileName,List<Map> list, List<String> names,HttpServletResponse response) { BufferedWriter bw = null; try { FileWriter fw = new FileWriter(fileName);//用来写入字符文件的便捷类 bw = new BufferedWriter(fw);//包装一下 StringBuffer str = new StringBuffer(""); //用来存储xml字符串的 str.append("<?xml version=\"1.0\" encoding=\"GB2312\"?>\n"); str.append("<root>\n"); String[] title = new String[]{"监测终端编号:(6位字母或数字 必填", "监测终端类型:（必填）", " 监测终端型号:（必填）", " SIM卡号:", "生产厂家:" ,"出厂日期:(日期格式 'yyyy-mm-dd'例如2013-10-12)" ,"出厂编号:","终端密码:","终端投运日期:(日期格式 'yyyy-mm-dd'例如2013-10-12" ,"终端状态:(0或1)","终端经度:(-180.00000~180.00000 必填)" ,"终端纬度:(-90.00000~90.00000 必填)","分局:","区域:(东南西北中或者空)","数据同步主站(0或1):","安装位置:","(导地线拉力及倾角监测功能22H)," +"(绝缘子泄漏电流监测功能24H),(气象数据监测功能25H),(导线温度、电流数据监测功能26H),(杆塔振动数据监测功能27H),(导线侧倾角监测功能28H)," +"(舞动振幅频率监测功能29H),(杆塔倾斜数据监测功能2AH),(导线微风震动数据监测功能2BH),(综合防盗功能2CH),(山火报警功能2DH),(大风舞动报警功能2EH)" +",(设备故障自检功能30H),(微风振动动态数据监测功能32H),(舞动动态数据监测功能36H),(图像监测功能84H)" }; for (int i = 0; i < list.size(); i++) { str.append("\t<row id=\"" + (i + 1) + "\">\n"); Map map = new HashMap(); map = list.get(i); for (int j = 0; j < names.size(); j++) { String name = names.get(j); String value = (String) map.get(name); str.append("<!-- "+title[j]+"-->\n"); if (value != null && value.length() > 0) { str.append("\t\t<" + name + ">" + value + "</" + name + ">\n"); } else { str.append("\t\t<" + name + ">"+"</" + name + ">\n"); } } str.append("\t</row>\n"); } str.append("</root>"); bw.write(str.toString());//写出到文件 bw.flush(); //刷新输出流 } catch (Exception e) { e.printStackTrace(); } finally { try { bw.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } try { FileInputStream fis = new FileInputStream(fileName); java.io.OutputStream os = response.getOutputStream(); byte[] b = new byte[1024]; int len = 0; while ((len = fis.read(b))!=-1) { os.write(b, 0, len); } os.flush(); os.close(); fis.close(); } catch (Exception e) { return; } deleteFile(picDir); } /** * 导出xml * @param request * request * @param response * response * @throws IOException */ @SuppressWarnings("unchecked") @RequestMapping(params = "act=writerXml1") public void writerXml1(HttpServletRequest request,HttpServletResponse response) throws IOException { //调用写出xml File picDir=null; String path = request.getSession().getServletContext().getRealPath("/testXml/"); path=path.replace("/", File.separator); String filePath = path; picDir = new File(filePath); if (!picDir.exists()) { picDir.mkdir(); } File pictureFile = new File(filePath + File.separator + "netInformation.xml"); if (!pictureFile.exists()) { pictureFile.createNewFile(); } String path1 = pictureFile+""; response.setHeader("Content-disposition", "attachment;fileName=netInformation" + ".xml"); response.setContentType("application/x-tar"); //定义一个存放数据的List List<String> names = new ArrayList<String>(); names.add("bsId"); names.add("bsType"); names.add("bsModal"); names.add("bsSim"); names.add("bsManufacturer"); names.add("bsLeaveFactoryDay"); names.add("bsIndentifier"); names.add("bsPassword"); names.add("bsServiceDate"); names.add("bsStatus"); names.add("longitude"); names.add("latitude"); names.add("bureau"); names.add("area"); names.add("bsNeedUpload"); names.add("remarks"); names.add("functions"); List<Map> list = new ArrayList<Map>(); Map map = new HashMap(); map.put("bsId", ""); map.put("bsType", ""); map.put("bsModal", ""); map.put("bsSim", ""); map.put("bsManufacturer", ""); map.put("bsLeaveFactoryDay", ""); map.put("bsIndentifier", ""); map.put("bsPassword", ""); map.put("bsServiceDate", ""); map.put("bsStatus", ""); map.put("longitude", ""); map.put("latitude", ""); map.put("bureau", ""); map.put("area", ""); map.put("bsNeedUpload", ""); map.put("remarks", ""); map.put("functions", ""); list.add(map); //把文件名，list集合，数据的列名做参数， writerXml(picDir,path1,list, names,response); logger.debug("导出成功------"); } private static void deleteFile(File file) { if (file.exists()) { //判断文件是否存在 if (file.isFile()) { //判断是否是文件 file.delete(); //delete()方法 你应该知道 是删除的意思; } else if (file.isDirectory()) { //否则如果它是一个目录 File files[] = file.listFiles(); //声明目录下所有的文件 files[]; for (int i=0;i<files.length;i++) { //遍历目录下所有的文件 //System.out.println(files[i]); deleteFile(files[i]); //把每个文件 用这个方法进行迭代 } } file.delete(); } else { logger.debug("所删除的文件不存在！"); } }