public function insert()
 {
     $upload = new \Think\Upload();
     // 实例化上传类
     $upload->maxSize = 3145728;
     // 设置附件上传大小
     $upload->exts = array('jpg', 'gif', 'png', 'jpeg');
     // 设置附件上传类型
     $upload->rootPath = './Public';
     $upload->savePath = './Uploads/';
     $upload->autoSub = false;
     // 设置附件上传目录
     // 上传文件
     $info = $upload->upload();
     if (!$info) {
         // 上传错误提示错误信息
         $this->error($upload->getError());
     } else {
         // 上传成功
         $pic[0] = $info['gdetail_picname1']['savename'];
         $pic[1] = $info['gdetail_picname2']['savename'];
         $pic[2] = $info['gdetail_picname3']['savename'];
         $pic[3] = $info['gdetail_picname4']['savename'];
     }
     //创建信息操作对象
     $gdetail = new \Think\Model("Gdetail");
     //初始化添加数据(将POST中的添加信息加载到本对象中)
     $_POST['gdetail_picname1'] = $pic[0];
     $_POST['gdetail_picname2'] = $pic[1];
     $_POST['gdetail_picname3'] = $pic[2];
     $_POST['gdetail_picname4'] = $pic[3];
     $gdetail->create();
     //执行添加
     if ($gdetail->add()) {
         $this->success("添加成功!", U("Gdetail/index"));
     } else {
         $this->error("添加失败");
     }
 }