bootstrap fileinput 上传失败,求助

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2016-12-07 · TA获得超过922个赞
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  最近因为项目需要研究了下bootstrap fileinput的使用,来记录下这几天的使用心得吧。

  前台html页面的代码

  <form role="form" id="importFile" method="post"

  enctype="multipart/form-data">

  <div class="row">

  <div class="col-md-3" >

  </div>

  <div class="col-md-3 ">

  <input type="radio" name="excelType" class="radio" id="line" value="line"><label for="line"> 参数2</label>

  </div>

  <div class="col-md-3 ">

  <input type="radio" name="excelType" class="radio" id="pipeline" value="pipeline"><label for="pipeline"> 参数3</label>

  </div>

  <div class="col-md-3 ">

  <input type="radio" name="excelType" class="radio" id="jdj" value="jdj"><label for="jdj"> 参数4</label>

  </div>

  </div>

  <input id="excelFile" name="excelFile" class="file-loading"

  type="file" multiple accept=".xls,.xlsx" data-min-file-count="1"

  data-show-preview="true"> <br>

  </form>

  js进行插件的初始化和一些参数的设置

  $("#excelFile").fileinput({

  uploadUrl:"rest/import/importExcel",//上传的地址

  uploadAsync: true,

  language : "zh",//设置语言

  showCaption: true,//是否显示标题

  showUpload: true, //是否显示上传按钮

  browseClass: "btn btn-primary", //按钮样式

  allowedFileExtensions: ["xls", "xlsx"], //接收的文件后缀

  maxFileCount: 10,//最大上传文件数限制

  uploadAsync: true,

  previewFileIcon: '<i class="glyphicon glyphicon-file"></i>',

  allowedPreviewTypes: null,

  previewFileIconSettings: {

  'docx': '<i class="glyphicon glyphicon-file"></i>',

  'xlsx': '<i class="glyphicon glyphicon-file"></i>',

  'pptx': '<i class="glyphicon glyphicon-file"></i>',

  'jpg': '<i class="glyphicon glyphicon-picture"></i>',

  'pdf': '<i class="glyphicon glyphicon-file"></i>',

  'zip': '<i class="glyphicon glyphicon-file"></i>',

  },

  uploadExtraData: function() {

  var extraValue = null;

  var radios = document.getElementsByName('excelType');

  for(var i=0;i<radios.length;i++){

  if(radios[i].checked){

  extraValue = radios[i].value;

  }

  }

  return {"excelType": extraValue};

  }

  });

  注意: uploadExtraData函数中只能用原生JS来取值,不能用JQuery来获取值,此参数用来向后台传递附加参数,以方便处理,最简单的写法是:

  uploadExtraData: {

  "excelType": document.getElementByID('id')

  }

  <input type="radio" name="excelType" class="radio网络搜索引擎营销sem竞价培训班http://www.yingtaow.com/pxfw?id="station" value="station"><label for="station"> 参数1</label>

  文件上传成功后的回调方法

  $("#excelFile").on("fileuploaded", function(event, data, previewId, index) {

  alert("上传成功!");

  $("#excelImport").modal("hide");

  //后台处理后返回的经纬度坐标json数组,

  var array = data.response;

  console.dir(array);

  //jquery循环取经纬度坐标

  $.each(array,function(index,latAndLon){

  var lon = latAndLon.lon;

  var lat = latAndLon.lat;

  var point = new Point(lon, lat, map.spatialReference);

  var symbol = new esri.symbol.SimpleMarkerSymbol().setStyle(

  SimpleMarkerSymbol.STYLE_CIRCLE).setColor(

  new Color([255,255,0,0.5]));

  var attr = {"address": "addressName" };

  var infoTemplate = new esri.InfoTemplate("标题", "地址 :${address}");

  var graphic = new Graphic(point,symbol,attr,infoTemplate);

  map.graphics.add(graphic);

  });

  });

  arcgis中点的定义的两种方法:

  var point = new Point(lon, lat, new SpatialReference({ wkid: 4326 }));

  var point = new Point(lon, lat, map.spatialReference);

  后台Java处理,使用common fileupload插件来实现,此处限制只能上传excel 文件

  public JSONArray importExcel(HttpServletRequest request,

  HttpServletResponse response) throws Exception {

  final String allowFileSuffix = "xls,xlsx";

  Subject subject = SecurityUtils.getSubject();

  String uname = (String) subject.getPrincipal();

  String basePath = "D:" + File.separator + uname;

  File tmpDir = new File(basePath);// 初始化上传文件的临时存放目录

  JSONArray jsonArry = new JSONArray();

  if (!tmpDir.exists()) {

  tmpDir.mkdirs();

  }

  // 检查输入请求是否为multipart表单数据。

  if (ServletFileUpload.isMultipartContent(request)) {

  DiskFileItemFactory dff = new DiskFileItemFactory();// 创建该对象

  dff.setRepository(tmpDir);// 指定上传文件的临时目录

  dff.setSizeThreshold(1024000);// 指定在内存中缓存数据大小,单位为byte

  ServletFileUpload sfu = new ServletFileUpload(dff);// 创建该对象

  // sfu.setFileSizeMax(5000000);//指定单个上传文件的最大尺寸

  sfu.setSizeMax(10000000);// 指定一次上传多个文件的总尺寸

  sfu.setHeaderEncoding("utf-8");

  String type = null;

  List<FileItem> fileItems = new ArrayList<FileItem>();

  try {

  fileItems = sfu.parseRequest(request);

  } catch (FileUploadException e1) {

  System.out.println("文件上传发生错误" + e1.getMessage());

  }

  String fullPath = null;

  String fileName = null;

  for (FileItem fileItem : fileItems) {

  // 判断该表单项是否是普通类型

  if (fileItem.isFormField()) {

  String name = fileItem.getFieldName();// 控件名

  String value = fileItem.getString();

  if (name.equals("excelType")) {

  type = value;

  }

  } else {

  String filePath = fileItem.getName();

  if (filePath == null || filePath.trim().length() == 0)

  continue;

  fileName = filePath.substring(filePath

  .lastIndexOf(File.separator) + 1);

  String extName = filePath.substring(filePath

  .lastIndexOf(".") + 1);

  fullPath = basePath + File.separator + fileName;

  if (allowFileSuffix.indexOf(extName) != -1) {

  try {

  fileItem.write(new File(fullPath));

  } catch (Exception e) {

  e.printStackTrace();

  }

  } else {

  throw new FileUploadException("文件格式不正确");

  }

  }

  }

  if (type.equals("station")) {

  jsonArry = readExcel(fullPath, fileName);

  } else if (type.equals("line")) {

  System.out.println("===============:line");

  } else if (type.equals("pipeline")) {

  System.out.println("===============:pipeline");

  } else if (type.equals("jdj")) {

  System.out.println("===============:jdj");

  }

  }

  return jsonArry;

  }

  // 判断文件类型

  public Workbook createWorkBook(InputStream is, String excelFileName)

  throws IOException {

  if (excelFileName.toLowerCase().endsWith("xls")) {

  return new HSSFWorkbook(is);

  }

  if (excelFileName.toLowerCase().endsWith("xlsx")) {

  return new XSSFWorkbook(is);

  }

  return null;

  }

  public JSONArray readExcel(String basePath, String fileName)

  throws FileNotFoundException, IOException {

  File file = new File(basePath);

  Workbook book = createWorkBook(new FileInputStream(file), fileName);

  JSONObject jsonObj = new JSONObject();

  JSONArray jsonArry = new JSONArray();

  Sheet sheet = book.getSheetAt(0);

  for (int i = 3; i < sheet.getLastRowNum(); i++) {

  Row row = sheet.getRow(i);

  String lon = row.getCell(2).getNumericCellValue() + "";

  String lat = row.getCell(3).getNumericCellValue() + "";

  jsonObj.put("lat", lat);// 纬度

  jsonObj.put("lon", lon);// 经度

  jsonArry.add(jsonObj);

  }

  System.out.println(jsonArry.toString());

  return jsonArry;

  }
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