bootstrap fileinput 文件上传

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" >
                                <input type="radio" name="excelType" class="radio" id="station" value="station"><label for="station">&nbsp;参数1</label>
                            </div>
                            <div class="col-md-3  ">
                                <input type="radio" name="excelType" class="radio" id="line" value="line"><label for="line">&nbsp;参数2</label>
                            </div>
                            <div class="col-md-3 ">
                                <input type="radio" name="excelType" class="radio" id="pipeline" value="pipeline"><label for="pipeline">&nbsp;参数3</label>
                            </div>
                            <div class="col-md-3 ">
                                <input type="radio" name="excelType" class="radio" id="jdj" value="jdj"><label for="jdj">&nbsp;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>

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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};
                    }
                });

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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')
                    }

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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);
        });

    });

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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);

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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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基本流程终于走通啦，修改后记录一下跟大家分享，欢迎拍砖~~~ 
不定时更新，查看更新请点击这里