封装直传阿里云存储文件上传控件

平凡人笔记
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本文目标

封装一个直传阿里云OSS云存储图片上传控件

控件效果图

上传之前
上传之前
上传成功
上传成功
预览图片
预览图片

文件上传前后台及阿里云存储数据流转过程

1、前端先访问后台接口获取上传阿里云存储权限相关信息和文件编号信息

2、前端获取到权限信息之后将文件上至阿里云存储


3、前端上传完成之后 提示用户上传完成


4、阿里云存储将上传结果异步通知到后端接口


5、后端接口将该文件的上传信息入库保存

代码

前端代码

html代码

<table style="width: 70%;text-align:left" class="pull-left">
	<tr>
		<td rowspan="2">
			<div id="uploadImage">
				<div class="statusBar" style="display:none;">
					<div class="progress">
						<span class="text">0%</span>
						<span class="percentage"></span>
					</div>
					<div class="info"></div>
				</div>
				<div class="queueList" style="display: flex;width: 204px;">
					<img id="showImage" src="/static/images/yyzz.jpg">
				</div>
			</div>
		</td>
		<td style="padding-left:10px;padding-top:10px">
			<label>原件扫描上传，图片大小不超过5M，文件格式为jpg、jpeg</label>
			<div class="btns">
				<div id="filePicker"></div><div class="uploadBtn"></div>
				<input type="hidden" id="licenseImgUrl" name="licenseImgUrl"/>
			</div>
		</td>
	</tr>
</table>

引用的资源文件

<link rel="stylesheet" type="text/css" href="/static/common/webuploader.css"/>
<link rel="stylesheet" type="text/css" href="/static/common/customerUploader-shiming.css"/>
<script src="/static/common/webuploader.js"></script>
<script type="text/javascript" src="/static/common/crypto1/hmac/hmac.js"></script>
<script type="text/javascript" src="/static/common/crypto1/crypto/crypto.js"></script>
<script type="text/javascript" src="/static/common/crypto1/sha1/sha1.js"></script>
<script type="text/javascript" src="/static/common/base64.js"></script>
<script type="text/javascript" src="/static/common/upload.js"></script>

js代码

<script>

var getExplorer = (function() {
	var explorer = window.navigator.userAgent,
			compare = function(s) { return (explorer.indexOf(s) &gt;= 0); },
			ie11 = (function() { return ("ActiveXObject" in window) })();
	if (compare("MSIE") || ie11) { return 'ie'; }
	else if (compare("Firefox") &amp;&amp; !ie11) { return 'Firefox'; }
	else if (compare("Chrome") &amp;&amp; !ie11) { return 'Chrome'; }
	else if (compare("Opera") &amp;&amp; !ie11) { return 'Opera'; }
	else if (compare("Safari") &amp;&amp; !ie11) { return 'Safari'; }
})()


$(function(){

	var $ = jQuery,
			$wrap = $('#uploadImage'),

			// 图片容器
			$queue = $('&lt;ul class="filelist"&gt;&lt;/ul&gt;').appendTo( $wrap.find('.queueList') ),

			// 状态栏，包括进度和控制按钮
			$statusBar = $wrap.find('.statusBar'),

			// 文件总体选择信息。
			$info = $statusBar.find('.info'),

			// 上传按钮
			$upload = $wrap.find('.uploadBtn'),

			// 没选择文件之前的内容。
			$placeHolder = $wrap.find('img'),

			// 总体进度条
			// $progress = $statusBar.find('.progress').hide(),

			// 添加的文件数量
			fileCount = 0,

			// 添加的文件总大小
			fileSize = 0,

			// 优化retina, 在retina下这个值是2
			ratio = window.devicePixelRatio || 1,

			// 缩略图大小
			thumbnailWidth = 1000 * ratio,
			thumbnailHeight = 800 * ratio,
			// thumbnailBigWidth = 600 * ratio,
			// thumbnailBigHeight = 400 * ratio,

			// 可能有pedding, ready, uploading, confirm, done.
			state = 'pedding',

			// 所有文件的进度信息，key为file id
			percentages = {},

			supportTransition = (function(){
				var s = document.createElement('p').style,
						r = 'transition' in s ||
								'WebkitTransition' in s ||
								'MozTransition' in s ||
								'msTransition' in s ||
								'OTransition' in s;
				s = null;
				return r;
			})(),

			// WebUploader实例
			uploader;
	var objdata = {};

	if ( !WebUploader.Uploader.support() ) {
		alert( 'Web Uploader 不支持您的浏览器！如果你使用的是IE浏览器，请尝试升级 flash 播放器');
		throw new Error( 'WebUploader does not support the browser you are using.' );
	}

	// 实例化
	uploader = WebUploader.create({
		auto:true,
		pick: {
			id: '#filePicker',
			label: '点击选择图片'
		},
		// dnd: '#uploadImage .queueList',
		// paste: document.body,

		accept: {
			title: 'Images',
			extensions: 'jpg,jpeg',
			mimeTypes: 'image/jpg,image/jpeg'
		},

		// swf文件路径
		swf: "/static/common/Uploader.swf",

		disableGlobalDnd: false,

		chunked: false,
		// server: 'http://webuploader.duapp.com/server/fileupload.php',
		// server: 'http://2betop.net/fileupload.php',
		method: 'POST',
		server: 'xxxxx',//这里要换成你自己的后台接口访问地址
		fileNumLimit: 1,
		threads:1,
		fileSizeLimit: 1*5 * 1024 *1024,    // 文件上传总大小
		fileSingleSizeLimit: 5 * 1024 * 1024,    // 单个文件大小
		duplicate:true,							//允許重複上傳
		compress:false,
		thumb: {
			allowMagnify: false,
			quality: 85,
			crop:false,
			type: 'image/jpeg'
		},
		resize:false
	});

	uploader.on('uploadBeforeSend',function (obj,data,headers) {
		$.ajax({
			type: "post",
			url: "${ctx}/upload/getOssSign",
			data:{
				type:4,
				originName:obj.file.name
			},
			async: false,
			success: function (re) {
				var r = JSON.parse(re);
				objdata.upfileEndPoint = r.endpoint;
				objdata.bucketName = r.bucketName;
				objdata.ossSign = {
					'key': r.dir,
					'policy': r.policy,
					'OSSAccessKeyId': r.accessid,
					'success_action_status': '200',
					'signature': r.signature,
					'callback':r.callback,
					'guid':r.guid
				}
			}
		});

		data = $.extend(data, objdata.ossSign);

		data.key = objdata.ossSign.key + calculate_object_name(data.name, 'random_name');
		obj.file.filepath=data.key;
		obj.filepath = data.key;
		objdata.filepath = data.key;
		obj.bucketName = objdata.bucketName;
		obj.endPoint = objdata.upfileEndPoint;
		obj.file.bucketName = objdata.bucketName;
		obj.file.endPoint = objdata.upfileEndPoint;
		obj.file.guid=objdata.ossSign.guid;
		$("#licenseImgUrl").val(objdata.ossSign.guid);

		$("#licenseImgUrl").attr("data",objdata.filepath);
		// file.path = data.key;
		headers['Access-Control-Allow-Origin'] = "*";
		// headers['Content-disposition'] = "inline";
	});

	// 添加“添加文件”的按钮，
	// uploader.addButton({
	// 	id: '#filePicker2',
	// 	label: '继续添加'
	// });

	// 当有文件添加进来时执行，负责view的创建
	function addFile( file ) {
		var $li = $( '&lt;li id="' + file.id + '"&gt;' +
				'&lt;p class="title" style="display: none;"&gt;' + file.name + '&lt;/p&gt;' +
				'&lt;p class="imgWrap"&gt;&lt;/p&gt;'+
				'&lt;p class="progress"&gt;&lt;span&gt;&lt;/span&gt;&lt;/p&gt;' +
				'&lt;/li&gt;' ),

				$btns = $('&lt;div class="file-panel"&gt;' +
						'&lt;span class="cancel"&gt;删除&lt;/span&gt;' +
						'&lt;span class="rotateRight"&gt;向右旋转&lt;/span&gt;' +
						'&lt;span class="rotateLeft"&gt;向左旋转&lt;/span&gt;&lt;/div&gt;').appendTo( $li ),
				$prgress = $li.find('p.progress span'),
				$wrap = $li.find( 'p.imgWrap' ),
				$info = $('&lt;p class="error"&gt;&lt;/p&gt;'),

				showError = function( code ) {
					switch( code ) {
						case 'exceed_size':
							text = '文件大小超出';
							break;

						case 'interrupt':
							text = '上传暂停';
							break;

						default:
							text = '上传失败，请重试';
							break;
					}

					$info.text( text ).appendTo( $li );
				};

		if ( file.getStatus() === 'invalid' ) {
			showError( file.statusText );
		} else {
			// @todo lazyload
			$wrap.text( '预览中' );
			uploader.makeThumb( file, function( error, src ) {
				if ( error ) {
					$wrap.text( '不能预览' );
					return;
				}

				var img = $('&lt;img src="'+src+'" data="'+objdata.filepath+'" onclick="showBigImg(this)"/&gt;');
				$wrap.empty().append( img );
			}, thumbnailWidth, thumbnailHeight );

			percentages[ file.id ] = [ file.size, 0 ];
			file.rotation = 0;
		}

		file.on('statuschange', function( cur, prev ) {
			if ( prev === 'progress' ) {
				$prgress.hide().width(0);
			} else if ( prev === 'queued' ) {		//如果进入队列则取消删除
				$li.off( 'mouseenter mouseleave' );
				$btns.remove();
			}

			if (cur == 'complete'){
				$btns = $('&lt;div class="file-panel"&gt;' +
						'&lt;span class="cancel"&gt;删除&lt;/span&gt;' +
						'&lt;span class="rotateRight"&gt;向右旋转&lt;/span&gt;' +
						'&lt;span class="rotateLeft"&gt;向左旋转&lt;/span&gt;&lt;/div&gt;').appendTo( $li );

				$li.on( 'mouseenter', function() {
					$btns.stop().animate({height: 30});
				});

				$li.on( 'mouseleave', function() {
					$btns.stop().animate({height: 0});
				});

				$btns.on( 'click', 'span', function() {
					var index = $(this).index(),
							deg;

					switch (index) {
						case 0:
							uploader.removeFile(file);
							$("#showImage").show();
							$("#filePicker").show();
							$(".uploadBtn").empty();
							$("#licenseImgUrl").val('');
							uploader.getStats().successNum = 0;
							return;

						case 1:
							file.rotation += 90;
							break;

						case 2:
							file.rotation -= 90;
							break;
					}
				});
			}

			// 成功
			if ( cur === 'error' || cur === 'invalid' ) {
				console.log( file.statusText );
				showError( file.statusText );
				percentages[ file.id ][ 1 ] = 1;
			} else if ( cur === 'interrupt' ) {
				showError( 'interrupt' );
			} else if ( cur === 'queued' ) {
				percentages[ file.id ][ 1 ] = 0;
			} else if ( cur === 'progress' ) {
				$info.remove();
				$prgress.css('display', 'block');
			} else if ( cur === 'complete' ) {
				$li.append( '&lt;span class="success"&gt;&lt;/span&gt;' );
			}

			$li.removeClass( 'state-' + prev ).addClass( 'state-' + cur );
		});

		$li.on( 'mouseenter', function() {
			$btns.stop().animate({height: 30});
		});

		$li.on( 'mouseleave', function() {
			$btns.stop().animate({height: 0});
		});

		$btns.on( 'click', 'span', function() {
			var index = $(this).index(),
					deg;

			switch ( index ) {
				case 0:
					uploader.removeFile( file );
					// enbaleSubmit();
					return;

				case 1:
					file.rotation += 90;
					break;

				case 2:
					file.rotation -= 90;
					break;
			}

			if ( supportTransition ) {
				deg = 'rotate(' + file.rotation + 'deg)';
				$wrap.css({
					'-webkit-transform': deg,
					'-mos-transform': deg,
					'-o-transform': deg,
					'transform': deg
				});
			} else {
				$wrap.css( 'filter', 'progid:DXImageTransform.Microsoft.BasicImage(rotation='+ (~~((file.rotation/90)%4 + 4)%4) +')');
			}


		});

		$li.appendTo( $queue );
	}

	// 负责view的销毁
	function removeFile( file ) {
		var $li = $('#'+file.id);

		delete percentages[ file.id ];
		$("#licenseImgUrl").val('');
		updateTotalProgress();
		$li.off().find('.file-panel').off().end().remove();
	}

	function updateTotalProgress() {

	}

	function updateStatus() {

	}

	function setState( val ) {
		var file, stats;

		if ( val === state ) {
			return;
		}

		$upload.removeClass( 'state-' + state );
		$upload.addClass( 'state-' + val );
		state = val;

		switch ( state ) {
			case 'pedding':
				uploader.refresh();
				break;

			case 'ready':
				$statusBar.removeClass('element-invisible');
				uploader.refresh();
				break;

			case 'uploading':
				// $( '#filePicker2' ).addClass( 'element-invisible' );
				// $progress.show();
				// $upload.text( '暂停上传' );

				$upload.text( '点击选择图片' ).removeClass("state-uploading").addClass("disabled");
				break;

			case 'paused':
				// $progress.show();
				// $upload.text( '继续上传' );
				$upload.text( '点击选择图片' ).removeClass("state-paused").addClass("disabled");
				break;

			case 'confirm':
				// $progress.hide();
				$upload.text( '点击选择图片' ).addClass( 'disabled' );

				stats = uploader.getStats();
				if ( stats.successNum &amp;&amp; !stats.uploadFailNum ) {
					setState( 'finish' );
					return;
				}
				break;
			case 'finish':
				if (fileCount == 0){
					$("#filePicker").show();
					$(".uploadBtn").empty();
					$("#showImage").show();
				}else {
					$("#filePicker").hide();
					$(".uploadBtn").text("上传成功");
					$("#showImage").hide();
					$(".uploadBtn").css("color","green");
				}

				break;
		}

		updateStatus();
	}

	uploader.onUploadProgress = function( file, percentage ) {
		var $li = $('#'+file.id),
				$percent = $li.find('.progress span');

		$percent.css( 'width', percentage * 100 + '%' );
		percentages[ file.id ][ 1 ] = percentage;
		// updateTotalProgress();
	};

	uploader.onFileQueued = function( file ) {
		if (fileCount == 0){
			fileSize = 0;
		}
		fileCount++;
		fileSize += file.size;

		// if ( fileCount === 1 ) {
		// 	$placeHolder.addClass( 'element-invisible' );
		// 	$statusBar.show();
		// }

		addFile( file );
		$("#showImage").hide();
		$upload.text( '开始上传' ).removeClass( 'disabled' );
		setState( 'ready' );
		updateTotalProgress();
	};

	uploader.onFileDequeued = function( file ) {
		fileCount--;
		fileSize -= file.size;

		if ( !fileCount ) {
			setState( 'pedding' );
		}

		removeFile( file );
		updateTotalProgress();

	};

	uploader.on( 'all', function( type ) {
		var stats;
		switch( type ) {
			case 'uploadFinished':
				setState( 'confirm' );
				break;

			case 'startUpload':
				setState( 'uploading' );
				break;

			case 'stopUpload':
				setState( 'paused' );
				break;

		}
	});

	uploader.onError = function( code ) {
		var msg;
		switch (code){
			case 'F_EXCEED_SIZE':
				msg = '上传错误，文件大小不得大于10M';
				break;
			case 'Q_EXCEED_NUM_LIMIT':
				msg = '最多可以上传1个文件';
				break;
			case 'Q_EXCEED_SIZE_LIMIT':
				msg = '上传文件大小过大';
				break;
			case 'Q_TYPE_DENIED':
				msg = '文件类型上传错误';
				break;
			case 'F_DUPLICATE':
				msg = '已经上传过该图片';
				break;
		}
		layer.alert(msg);
	};

	$upload.on('click', function() {
		if ( $(this).hasClass( 'disabled' ) ) {
			return false;
		}

		if ( state === 'ready' ) {
			uploader.upload();
		} else if ( state === 'paused' ) {
			uploader.upload();
		} else if ( state === 'uploading' ) {
			uploader.stop();
		}
	});

	$info.on( 'click', '.retry', function() {
		uploader.retry();
	} );

	$info.on( 'click', '.ignore', function() {
		alert( 'todo' );
	} );

	$upload.addClass( 'state-' + state );
	updateTotalProgress();

	//=============================================================================================================

});


function showBigImg(obj) {
	if (getExplorer == 'ie'){
		$('&lt;div id="outerdiv2" style="position:fixed;top:0;left:0;background:rgba(0,0,0,0.7);z-index:99999;width:100%;height:100%;display:none;opacity: 1 !important;"&gt;&lt;div id="innerdiv2" style="position:fixed;"&gt;&lt;img id="bigimg" style="border:2px solid #fff;" src="" /&gt;&lt;/div&gt;&lt;/div&gt;').appendTo(document.body);
	}else {
		$('&lt;div id="outerdiv2" style="position:fixed;top:0;left:0;background:rgba(0,0,0,0.7);z-index:99999;width:100%;height:100%;display:none;"&gt;&lt;div id="innerdiv2" style="position:fixed;"&gt;&lt;img id="bigimg" style="border:2px solid #fff;" src="" /&gt;&lt;/div&gt;&lt;/div&gt;').appendTo(document.body);
	}

###这里是图片服务器 用于剪裁图片使用（阿里云图片文档有详细说明）
	var url = "http://ixxx.com/"+$("#licenseImgUrl").attr("data")+"?x-oss-process=image/resize,m_lfit,h_600";;

	$("#bigimg").attr("src",url);
	$("&lt;img/&gt;").attr("src",url).load(function () {
		var globalWidth = $(window).width();
		var globalHeight = $(window).height();
		var imgWidth = this.width;
		var imgHeight = this.height;
		var wid,hei,ratio=window.devicePixelRatio || 1;
		if (imgHeight &gt; globalHeight * ratio){
			hei = globalHeight *ratio;
			wid = hei/imgHeight*imgWidth;
			if (wid &gt; globalWidth*ratio){
				wid = globalWidth * ratio;
			}
		}else {
			if (imgWidth &gt; globalWidth * ratio){
				wid = globalWidth * ratio;
				hei = wid/imgWidth*imgHeight;
			}else {
				wid = imgWidth;
				hei = imgHeight;
			}
		}

		$("#bigimg").css({
			"width":wid
		});

		var posiLeft,posiTop;
		if (imgWidth &gt; imgHeight){
			posiLeft = (globalWidth-$("#bigimg").width())/2;
			posiTop = (globalHeight-imgHeight)/2;
		}else {
			posiLeft = (globalWidth-imgWidth)/2;
			posiTop = (globalHeight-imgHeight)/2;
		}

		if (getExplorer == 'ie'){
			$("#innerdiv2").css({
				top: "0px",
				left:Math.abs(posiLeft)-230,
				"opacity":"opacity: 1 !important"
			});
		}else {
			$("#innerdiv2").css({
				top:Math.abs(posiTop),
				left:Math.abs(posiLeft)
			});
		}

		$("#outerdiv2").fadeIn("fast");
	});

	$("#outerdiv2").click(function () {
		$(this).fadeOut("fast",function () {
			$(this).remove();
		});
	});
}



</script>

后端代码

pom依赖

<dependency>
			<groupId>com.aliyun.oss</groupId>
			<artifactId>aliyun-sdk-oss</artifactId>
			<version>3.8.0</version>
		</dependency>

获取oss权限信息接口

@PostMapping("/getOssSign")
    @ResponseBody
    public String getSign(String type,String originName) throws UnsupportedEncodingException {
        Map<String,Object> map = new HashMap<>();

    String userName= UserUtils.getUser().getUserName();

    long expireTime = 30;
    long expireEndTime = System.currentTimeMillis() + expireTime * 100000;
    OSSClient ossClient = new OSSClient(endpoint,accessKeyId,accessKeySecret);

    Date expiration = new Date(expireEndTime);
    String dir = "";
    if (type.equals("4")){
        dir = profile.concat("/").concat("XXXXer/certification/").concat(userName).concat("/").concat(DateUtils.formatDate(new Date(),DateTimeUtils.YYYY_MM_DD)).concat("/");
    }else {
        dir = profile.concat("/").concat(userName).concat("/").concat(DateUtils.formatDate(new Date(),DateTimeUtils.YYYY_MM_DD)).concat("/");
    }
    PolicyConditions policyConds = new PolicyConditions();
    policyConds.addConditionItem(PolicyConditions.COND_CONTENT_LENGTH_RANGE, 0, 1048576000);
    policyConds.addConditionItem(MatchMode.StartWith, PolicyConditions.COND_KEY, dir);

    String postPolicy = ossClient.generatePostPolicy(expiration, policyConds);
    byte[] binaryData = postPolicy.getBytes("utf-8");
    String encodedPolicy = BinaryUtil.toBase64String(binaryData);
    String postSignature = ossClient.calculatePostSignature(postPolicy);

    Map&lt;String,Object&gt; callbackMap = new HashMap&lt;&gt;();
    String guid = BusinessCodeGenUtil.INSTANCE.nextId();
    callbackMap.put("callbackUrl",callbackUrl);
    StringBuffer stringBuffer = new StringBuffer();
    Map&lt;String,Object&gt; customerParam = new HashMap&lt;&gt;();
    customerParam.put("x:guid", guid);
    customerParam.put("x:type",type);
    customerParam.put("x:originName",originName);
    stringBuffer.append("filename=${object}&amp;size=${size}&amp;mimeType=${mimeType}&amp;height=${imageInfo.height}&amp;width=${imageInfo.width}&amp;etag=${etag}&amp;my_param="+JSONObject.toJSONString(customerParam));
    callbackMap.put("callbackBody",stringBuffer.toString());
    callbackMap.put("callbackBodyType","application/json");
    map.put("endpoint",endpoint);
    map.put("accessid",accessKeyId);
    map.put("policy",encodedPolicy);
    map.put("signature",postSignature);
    map.put("expire",String.valueOf(expireEndTime/1000));
    map.put("bucketName",bucketName);
    String encryptContent = JSONObject.toJSONString(callbackMap);
    map.put("callback", Base64Utils.encodeToString(encryptContent.getBytes("UTF-8")));
    //需处理
    map.put("dir",dir);
    map.put("guid",guid);
    String json= JSONObject.toJSONString(map);
    logger.info("callback:{}", json);
    return json;
}

接受阿里云存储回调接口

   @PostMapping("/call")
    @ResponseBody
    public String callback(@RequestBody String data) throws IOException {

    logger.info("回调数据:"+data);
    fileService.saveUploadResult(data);

    return "SUCCESS";
}




@Override
    public void saveUploadResult(String ossCallbackBody) {

        ossCallbackBody=ossCallbackBody.replaceAll("\"","");
        /**解析json字符串**/
        Map<String,String> callbackBodyMap= JsonUtils.strToMap(ossCallbackBody);
        /**获取etag值**/
        String fileName=callbackBodyMap.get("filename");
        String etag=callbackBodyMap.get("etag");
        String size=callbackBodyMap.get("size");
        String myVar=callbackBodyMap.get("my_param");


        myVar=myVar.replaceAll("x\\:","");

//        JsonObject jsonObject=JsonUtils.parseJson(myVar).getAsJsonObject();
//        Map<String,String> map=JsonUtils.strToMap(myVar);
        myVar=myVar.replaceAll("\\{","");
        myVar=myVar.replaceAll("\\}","");

        Map<String,String> map= JsonUtils.parseSpecialJson(myVar);

        String type=map.get("type");

        String guid=map.get("guid");

        String originName=map.get("originName");


        String objectName=fileName;
        String ossUrl= aliyunOSSUtil.getUrl(objectName);
        ossUrl= ossUrl.substring(0,ossUrl.indexOf("?"));

        FileHash fileHash=new FileHash();
        fileHash.setFileHashId(guid);
        fileHash.setRemark(etag);
        fileHash.setOssfilePath(ossUrl);
        fileHash.setTemfilePath(fileName);
        fileHash.setType(Integer.valueOf(type));
        fileHash.setFileSize(Integer.valueOf(size));
        fileHash.setFileName(originName);
//        fileHash.setFileName(fileName.substring(fileName.lastIndexOf("/")+1));
        fileHash.setStatus(CommonConstant.STATUS_SUCCESS);
        fileHashMapper.insertSelective(fileHash);
    }

相关js文件资源

https://gitee.com/pingfanrenbiji/mengfanxiao-resource/tree/master/static/common

本文使用 mdnice 排版

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