laravel-文件上传处理

laravel文档中关于文件上传的资料很少，这里实现一个ajax上传：

html内容：

upload.blade.php

@extends('layout.default')@section('title', '注册')@section('content')<!--上传界面--><div class="col-md-offset-2 col-md-8">  <div class="panel panel-default">    <div class="panel-heading">      <h5>上传</h5>    </div>    <div class="panel-body">        @include('shared.upload_image')        <div class="form-group row">            <label class="col-md-2 control-label">图片一</label>            <div class="col-md-4 thumb-wrap">                <div class="pic-upload btn btn-block btn-info btn-flat" title="点击上传">点击上传</div>                <img id="test_upload" src="" height="100px"  />                <input type="hidden" name="test_upload" value="" />            </div>        </div>        <div class="form-group row">            <label class="col-md-2 control-label">图片二</label>            <div class="col-md-4 thumb-wrap">                <div class="pic-upload btn btn-block btn-info btn-flat" title="点击上传">点击上传</div>                <img id="test_upload2" src="" height="100px"  />                <input type="hidden" name="test_upload2" value="">            </div>        </div>    </div>  </div></div>@stop

upload_image.blade.php

<!-- 上传图片弹出层div /S--><div class="upload-mask"></div><div class="panel panel-info upload-file">    <div class="panel-heading">        上传图片        <span class="close pull-right">关闭</span>    </div>    <div class="panel-body">        <div id="validation-errors"></div>        {!! Form::open( array('url' =>['/upload'], 'method' => 'post', 'id'=>'imgForm', 'files'=>true) ) !!}        <div class="form-group">            <label>图片上传</label>            <span class="require">(*)</span>            <input id="thumb" name="file" type="file"  required="required">            <input id="imgID"  type="hidden" name="id" value="">        </div>        {!!Form::close()!!}    </div>    <div class="panel-footer">    </div></div><!-- 上传图片div /E-->

路由：

//上传Route::get('/upload', 'UsersController@showUpload');Route::post('/upload', 'UploadController@imgUpload')->name('upload');

PHP：

showUpload方法

//显示上传页    public function showUpload()    {        return view('users.upload');    }

<?php/* 图片上传 */namespace App\Http\Controllers;use Illuminate\Http\Request;use App\Http\Requests;use App\Http\Controllers\Controller;//上传相关use Redirect, Input, Response;class UploadController extends Controller{    //Ajax上传图片    public function imgUpload(){        $file = Input::file('file');        $id = Input::get('id');        $allowed_extensions = ["png", "jpg", "gif"];        if ($file->getClientOriginalExtension() && !in_array($file->getClientOriginalExtension(), $allowed_extensions)) {            return Response::json(['success' => false,'error' => '你只能上传png,jpg或者gif']);        }        $destinationPath = 'uploads/images/';        $extension = $file->getClientOriginalExtension();        $fileName = str_random(10).'.'.$extension;        $file->move($destinationPath, $fileName);        return Response::json(            [                'success' => true,                'pic' => asset($destinationPath.$fileName),                'id' => $id            ]        );    }   }

JS内容：

<script src="/js/jquery.form.js"></script><script src="/js/upload.js"></script>

upload.js

/* upload image */$(function(){    $('.upload-mask').on('click',function(){        $(this).hide();        $('.upload-file').hide();    })    $('.upload-file .close').on('click',function(){        $('.upload-mask').hide();        $('.upload-file').hide();    })    var imgSrc = $('.pic-upload').next().attr('src');    console.log(imgSrc);    if(imgSrc == ''){        $('.pic-upload').next().css('display','none');    }    $('.pic-upload').on('click',function(){        $('.upload-mask').show();        $('.upload-file').show();        console.log($(this).next().attr('id'));        var imgID = $(this).next().attr('id');        $('#imgID').attr('value',imgID);    })        //ajax 上传    $(document).ready(function() {        var options = {            beforeSubmit:  showRequest,            success:       showResponse,            dataType: 'json'        };        $('#imgForm input[name=file]').on('change', function(){            //$('#upload-avatar').html('正在上传...');            $('#imgForm').ajaxForm(options).submit();        });    });    function showRequest() {        $("#validation-errors").hide().empty();        $("#output").css('display','none');        return true;    }    function showResponse(response)  {        if(response.success == false){            var responseErrors = [response.error];            $.each(responseErrors, function(index, value){                if (value.length != 0){                    $("#validation-errors").append('<div class="alert alert-error"><strong>'+ value +'</strong><div>');                }            });            $("#validation-errors").show();        } else {            $('.upload-mask').hide();            $('.upload-file').hide();            $('.pic-upload').next().css('display','block');            console.log(response.pic);            $("#"+response.id).attr('src',response.pic);            $("#"+response.id).next().attr('value',response.pic);        }    }})

提示：如果你的laravel没有安装form组件，那么可以直接写form标签

{!! Form::open( array('url' =>['/upload'], 'method' => 'post', 'id'=>'imgForm', 'files'=>true) ) !!}

以上是全部代码