<div class="form-group"> 
<label for="inputEmail3" class="col-xs-3 control-label">项目LOGO</label> 
<div class="col-xs-7"> 
<input id="testlogo" type="file" name="icoFile" class="file-loading" /> 
<input type="text" name="htestlogo" id="htestlogo" onchange="addFile(this)" > 
</div> 
</div>

// 初始化获取原有文件 
$(function(){ 
$.ajax({ 
type : "post", 
url : "/eim/project/testFileUpload.do", 
dataType : "json", 
success : function(data) { 
layer.msg('操作成功！'); 
showPhotos(data); 
}, 
error: function(XMLHttpRequest, textStatus, errorThrown) { 
layer.msg('操作失败！'); 
} 
}); 
}); 

function showPhotos(djson){ 
//后台返回json字符串转换为json对象 
var reData = eval(djson); 
// 预览图片json数据组 
var preList = new Array(); 
for ( var i = 0; i < reData.length; i++) { 
var array_element = reData[i]; 
// 此处指针对.txt判断，其余自行添加 
if(array_element.fileIdFile.name.indexOf("txt")>0){ 
// 非图片类型的展示 
preList[i]= "<div class='file-preview-other-frame'><div class='file-preview-other'><span class='file-icon-4x'><i class='fa fa-file-text-o text-info'></i></span></div></div>" 
}else{ 
// 图片类型 
preList[i]= "<img src=\"/eim/upload/getIMG.do"+array_element.fileIdFile.filePath+"&name="+array_element.fileIdFile.name+"\" class=\"file-preview-image\">"; 
} 
} 
var previewJson = preList; 
// 与上面 预览图片json数据组 对应的config数据 
var preConfigList = new Array(); 
for ( var i = 0; i < reData.length; i++) { 
var array_element = reData[i]; 
var tjson = {caption: array_element.fileIdFile.fileName, // 展示的文件名 
width: '120px', 
url: '/eim/project/deleteFile.do', // 删除url 
key: array_element.id, // 删除是Ajax向后台传递的参数 
extra: {id: 100} 
}; 
preConfigList[i] = tjson; 
} 
// 具体参数自行查询 
$('#testlogo').fileinput({ 
uploadUrl: '/eim/upload/uploadFile.do', 
uploadAsync:true, 
showCaption: true, 
showUpload: true,//是否显示上传按钮 
showRemove: false,//是否显示删除按钮 
showCaption: true,//是否显示输入框 
showPreview:true, 
showCancel:true, 
dropZoneEnabled: false, 
maxFileCount: 10, 
initialPreviewShowDelete:true, 
msgFilesTooMany: "选择上传的文件数量 超过允许的最大数值！", 
initialPreview: previewJson, 
previewFileIcon: '<i class="fa fa-file"></i>', 
allowedPreviewTypes: ['image'], 
previewFileIconSettings: { 
'docx': '<i class="fa fa-file-word-o text-primary"></i>', 
'xlsx': '<i class="fa fa-file-excel-o text-success"></i>', 
'pptx': '<i class="fa fa-file-powerpoint-o text-danger"></i>', 
'pdf': '<i class="fa fa-file-pdf-o text-danger"></i>', 
'zip': '<i class="fa fa-file-archive-o text-muted"></i>', 
'sql': '<i class="fa fa-file-word-o text-primary"></i>', 
}, 
initialPreviewConfig: preConfigList 
}).off('filepreupload').on('filepreupload', function() { 
// alert(data.url); 
}).on("fileuploaded", function(event, outData) { 
//文件上传成功后返回的数据， 此处我只保存返回文件的id 
var result = outData.response.id; 
// 对应的input 赋值 
$('#htestlogo').val(result).change(); 
}); 
}

@RequestMapping(value="/uploadFile",method=RequestMethod.POST) 
@ResponseBody 
public Object uploadFile(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { 
//转型为MultipartHttpServletRequest 
MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest)request; 
//获取文件到map容器中 
Map<String,MultipartFile> fileMap = multipartRequest.getFileMap(); 
//获取页面传递过来的路径参数 
folderPath = request.getParameter("folder"); 
String rootPath = BaseConfig.uploadPath; 
String filePath = rootPath + folderPath+"/"; 
//文件上传并返回map容器，map存储了文件信息 
FileModel fileModel = UploadifyUtils.uploadFiles(filePath,fileMap); 
boolean flag = service.add(fileModel); 
if(flag){ 
String result = fileModel.getId()+";"+fileModel.getFilePath()+";"+fileModel.getName()+";"+fileModel.getFilePath(); 
Map map = new HashMap<>(); 
map.put("id", fileModel.getId()); 
//返回文件保存ID 
//response.getWriter().write(map); 
return map; 
} 
return null; 
} 

/** 
* 文件下载 
* 
* @param savePath 
* 保存目录 
* @param name 
* 文件原名 
* @param file 
* 保存时的名称 包含后缀 
* @param request 
* @param response 
* @return 
*/ 
public static String down(String savePath, String name, String fileName, HttpServletRequest request, 
HttpServletResponse response) { 
try { 
String path = savePath + "/" + name; 
File file = new File(path); 
if (!file.exists()) { 
// 不存在 
request.setAttribute("name", fileName); 
return "download_error";// 返回下载文件不存在 
} 
response.setContentType("application/octet-stream"); 
// 根据不同浏览器 设置response的Header 
String userAgent = request.getHeader("User-Agent").toLowerCase(); 
if (userAgent.indexOf("msie") != -1) { 
// ie浏览器 
// System.out.println("ie浏览器"); 
response.addHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(name, "utf-8")); 
} else { 
response.addHeader("Content-Disposition", 
"attachment;filename=" + new String(name.getBytes("utf-8"), "ISO8859-1")); 
} 
response.addHeader("Content-Length", "" + file.length()); 
// 以流的形式下载文件 
InputStream fis = new BufferedInputStream(new FileInputStream(path)); 
byte[] buffer = new byte[fis.available()]; 
fis.read(buffer); 
fis.close(); 
//response.setContentType("image/*"); // 设置返回的文件类型 
OutputStream toClient = response.getOutputStream(); 
OutputStream bos = new BufferedOutputStream(toClient); 
//BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(bos)); 
bos.write(buffer); 
//bw.close(); 
bos.close(); 
toClient.close(); 
return null; 
} catch (Exception e) { 
e.printStackTrace(); 
//response.reset(); 
return "exception";// 返回异常页面 
} finally { 
/* if (toClient != null) { 
try { 
toClient.close(); 
} catch (IOException e) { 
e.printStackTrace(); 
} 
}*/ 
} 
}

public static FileModel uploadFiles(String savePath,Map<String,MultipartFile> fiLeMap){ 
//上传文件 
//附件模型对象 
FileModel fm=new FileModel(); 
try { 
File file = new File(savePath); 
//判断文件夹是否存在,如果不存在则创建文件夹 
makeDir(file); 
if(fiLeMap!=null){ 
for(Map.Entry<String, MultipartFile> entity:fiLeMap.entrySet()){ 
MultipartFile f = entity.getValue(); 
if(f!=null&&!f.isEmpty()){ 
String uuid=UploadifyUtils.getUUID();//uuid作为保存时的文件名 
String ext=UploadifyUtils.getFileExt(f.getOriginalFilename());//获取文件后缀 
//保存文件 
File newFile = new File(savePath+"/"+uuid+"."+ext); 
f.transferTo(newFile); 
fm.setFileName(f.getOriginalFilename()); 
fm.setName(uuid+"."+ext); 
fm.setFilePath(savePath);//保存路径 
fm.setExt(ext); 
fm.setSize(f.getSize()); 
} 
} 
} 
return fm; 
}catch (Exception e) { 
log.error(e); 
return null; 
} 
}