Thinkphp——Layui图片/文件上传

在项目中用到了，再网上找了现成的代码都是借口异常或者非法上传，所以在一番摸索搞定之后拿来和大家分享。

html：

<form class="layui-form layui-form-pane" action="" style="margin-top:20px;" enctype="multipart/form-data">
	<center>	 
		<div class="layui-upload-drag" id="uploadBanner">
			<img class="layui-upload-img" id="upload-photo">
			<i class="layui-icon" id="upload-icon"></i>
			<p>点击上传，或将文件拖拽到此处</p>
			<p>建议尺寸1920*512</p>
		</div>
		<input type="hidden" id="res" name="banner_photo" value="" lay-verify="required"  />
		<div class="layui-form-item" style="margin-top:10px;">
			<button class="layui-btn" lay-submit="" lay-filter="sub">提交</button>
		</div>
		<div id="demoText"></div>
	</center>
</form>

JS：

layui.use('upload', function(){
	var $ = layui.jquery
		,upload = layui.upload;
	  
	//普通图片上传
	var uploadInst = upload.render({
		elem: '#uploadBanner'
		,url: "{:U('Api/doUploadPic')}"
		,before: function(obj){
			//预读本地文件示例，不支持ie8
			obj.preview(function(index, file, result){
				$('#upload-photo').attr('src', result); //图片链接（base64）
				$('#upload-photo').attr('style', 'height:10rem;');
				$('#upload-icon').attr('style','display:none;');
			});
		}
		,done: function(res, index, upload){
			//如果上传失败
			if(res.code > 0){
				return layer.msg('上传失败');
			}
			//上传成功
			console.log("成功啦！" + obj2string(res) + "    " + index + "    " + upload);
		}
		,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-xs demo-reload">重试</a>');
			demoText.find('.demo-reload').on('click', function(){
				uploadInst.upload();
			});
		}
	});
});

PHP接口：

public function doUploadPic()//上传模块
    {
        $upload = new \Think\Upload();
        $upload->maxSize = 3145728;
        $upload->exts = array('jpg', 'gif', 'png', 'jpeg');
        $upload->rootPath = './Public/'; // 设置附件上传根目录
		$upload->savePath = 'upload/'; // 设置附件上传子目录
        $info = $upload->upload();
        if(!$info){
            $this->error($upload->getError());
        }else{
            foreach($info as $file){
		    $data = '/Public'.$file['savepath'] . $file['savename'];
		    $file_a=$data;
		    echo '{"code":0,"msg":"成功上传","data":{"src":"'.$file_a.'"}}';
			}
        }
    }

图片就上传到/Public/upload文件夹下了：

不需要点击提交，Layui下图片自动上传，回传上传图片的地址，然后提交到数据库，也就是伪提交