Thinkphp框架+Layui实现图片/文件上传功能分析

本文实例讲述了thinkphp框架+layui实现图片/文件上传功能。分享给大家供大家参考，具体如下：

在项目中用到了，再网上找了现成的代码世界第一大河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。

htm全国四六级考试官网l：

<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-ve高一数学知识点rify="required" 澳洲高中/>    <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.u('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（ba64）        $('#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());    }el{      foreach($info as $file){      $data = '/public'.$file['savepath'] . $filepm时间['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：