TP5(thinkPHP5框架)基于bootstrap实现的单图上传插件用

<!--图片上传-->
<link href="/public/static/css/bootstrap.min.css" rel="external nofollow" rel="stylesheet">
<link href="/public/static/css/fileinput.css" rel="external nofollow" media="all" rel="stylesheet" type="text/css" />
<script src="/public/static/js/jquery-2.0.3.min.js"></script>
<script src="/public/static/js/fileinput.js" type="text/javascript"></script>
<script src="/public/static/js/fileinput_locale_de.js" type="text/javascript"></script>
<script src="/public/static/js/bootstrap.min.js" type="text/javascript"></script>

<div class="form-group">
  <label for="inputPassword3" class="col-sm-2 control-label">轮播图</label>
  <div class="col-sm-10">
    <input class="file" type="file" name="img">
  </div>
</div>

public function add() {
 $file = $request->file("img");
//声明一个空的文件路径
$imgPath = "";
//移动文件到框架应用更目录的public/uploads/
if ($file) {
  $info = $file->move(ROOT_PATH . 'public' . DS . 'upload' . DS . '_bar' . DS . date('Y') . DS . date('m-d'),md5(microtime(true)));
  if ($info) {
    $imgPath = "/public/upload/_bar/" . date('Y') . '/' . date('m-d') . '/' . $info->getSaveName();
       }
   } else {
  //错误提示用户
  return $this->error($file->getError());
    }
//赋值
$data["thumb_url"] = $imgPath;
$dataId = Db::name('_bar')->insertGetId($data);
}