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"> 参数1</label>
</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')
}

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;
}

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~~~

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