layui 图片上传+表单提交+ Spring MVC的实例

Layui 的上传是最常用的, 不可或缺, 记录一下代码, 以后复制都能用!!

1.前端HTML：

<div class=\"layui-form-item\">
 <label class=\"layui-form-label\">修改头像</label>
 <div class=\"layui-input-inline uploadHeadImage\">
  <div class=\"layui-upload-drag\" id=\"headImg\">
   <i class=\"layui-icon\"></i>
   <p>点击上传图片，或将图片拖拽到此处</p>
  </div>
 </div>
 <div class=\"layui-input-inline\">
  <div class=\"layui-upload-list\">
   <img class=\"layui-upload-img headImage\" src=\"http://t.cn/RCzsdCq\" id=\"demo1\">
   <p id=\"demoText\"></p>
  </div>
 </div>
</div>

2.前端js：

<script type=\"text/javascript\">
 layui.use([\"jquery\", \"upload\", \"form\", \"layer\", \"element\"], function () {
  var $ = layui.$,
   element = layui.element,
   layer = layui.layer,
   upload = layui.upload,
   form = layui.form;
  //拖拽上传
  var uploadInst = upload.render({
   elem: \'#headImg\'
   , url: \'/upload/headImg\'
   , size: 500
   , before: function (obj) {
    //预读本地文件示例，不支持ie8
    obj.preview(function (index, file, result) {
     $(\'#demo1\').attr(\'src\', result); //图片链接（base64）
    });
   }
   , done: function (res) {
    //如果上传失败
    if (res.code > 0) {
     return layer.msg(\'上传失败\');
    }
    //上传成功
    //打印后台传回的地址: 把地址放入一个隐藏的input中, 和表单一起提交到后台, 此处略..
    /* console.log(res.data.src);*/
    window.parent.uploadHeadImage(res.data.src);
    var demoText = $(\'#demoText\');
    demoText.html(\'<span style=\"color: #8f8f8f;\">上传成功!!!</span>\');
   }
   , error: function () {
    //演示失败状态，并实现重传
    var demoText = $(\'#demoText\');
    demoText.html(\'<span style=\"color: #FF5722;\">上传失败</span> <a class=\"layui-btn layui-btn-mini demo-reload\">重试</a>\');
    demoText.find(\'.demo-reload\').on(\'click\', function () {
     uploadInst.upload();
    });
   }
  });
  element.init();
 });
</script>

3.页面展示：

4.后台SpringMVC 接受：

/**
 * 个人信息上传
 * @return {Result}
 */
@RequestMapping(value = \"/upload/headImg\", method = {RequestMethod.POST})
@ResponseBody
public Object headImg(@RequestParam(value=\"file\",required=false) MultipartFile file, HttpServletRequest request, HttpServletResponse response) throws Exception {
 if (SecurityUtils.getSubject().isAuthenticated() == false) {
  return \"redirect:/backEnd/login\";
 }
 String prefix=\"\";
 String dateStr=\"\";
 //保存上传
  OutputStream out = null;
 InputStream fileInput=null;
 try{
  if(file!=null){
   String originalName = file.getOriginalFilename();
   prefix=originalName.substring(originalName.lastIndexOf(\".\")+1);
    dateStr = format.format(new Date());
   String filepath = request.getServletContext().getRealPath(\"/static\") + uploadDir + dateStr + \".\" + prefix;
   filepath = filepath.replace(\"\\\\\", \"/\");
   File files=new File(filepath);
   //打印查看上传路径
   System.out.println(filepath);
   if(!files.getParentFile().exists()){
    files.getParentFile().mkdirs();
   }
   file.transferTo(files);
  }
 }catch (Exception e){
 }finally{
  try {
   if(out!=null){
    out.close();
   }
   if(fileInput!=null){
    fileInput.close();
   }
  } catch (IOException e) {
  }
 }
 Map<String,Object> map2=new HashMap<>();
 Map<String,Object> map=new HashMap<>();
 map.put(\"code\",0);
 map.put(\"msg\",\"\");
 map.put(\"data\",map2);
 map2.put(\"src\",\"../../../static\"+uploadDir + dateStr + \".\" + prefix);
 return map;
}

5.关于表单请求, 正常使用layui的表单上传就可以了.. 这里就不写了, 太简单了, 我其它博客有写,请去翻阅,嗯 ,就这样…….

以上这篇layui 图片上传+表单提交+ Spring MVC的实例就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持。