webuploader项目中多文件上传实例

时间：2022-08-28 09:35:53

 

<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title> 百度uploader Demo</title>
<!--引入CSS-->
<link rel="stylesheet" type="text/css" href="/js/webuploader/css/webuploader.css">
<script type="text/javascript" src="/js/webuploader/js/jquery-1.9.1.min.js"></script>
<script type="text/javascript" src="/js/webuploader/js/webuploader.min.js"></script>
<!--SWF在初始化的时候指定，在后面将展示-->
</head>
<body>
<h2>文件上传</h2>
<!--dom结构部分-->
<div id="uploader-demo">
    <!--用来存放item-->
    <div id="thelist" class="uploader-list"></div>
    <div class="btns">
	<div id="picker"><input type="file" /></div> 		
	<button id="ctlBtn" class="btn btn-default">开始上传</button> 			
    </div>	
</div>

<script type="text/javascript"> 
jQuery(function() {
    var $ = jQuery,
        $list = $('#thelist'),
        $btn = $('#ctlBtn'),
        state = 'pending',
        uploader;

    uploader = WebUploader.create({

        // 不压缩image
        resize: false,

        // swf文件路径
        swf: '/js/webuploader/js/Uploader.swf',

        // 文件接收服务端。
        server: '/uploadMeterialAttachment.do',
        
        fileVal:'upload',

        // 选择文件的按钮。可选。
        // 内部根据当前运行是创建，可能是input元素，也可能是flash.
        pick: '#picker'
    });

    // 当有文件添加进来的时候
    uploader.on( 'fileQueued', function( file ) {
        $list.append( '<div id="' + file.id + '" class="item">' +
            '<h4 class="info">' + file.name + '</h4>' +
            '<p class="state">等待上传...</p>' +
        '</div>' );
    });

    // 文件上传过程中创建进度条实时显示。
    uploader.on( 'uploadProgress', function( file, percentage ) {
        var $li = $( '#'+file.id ),
            $percent = $li.find('.progress .progress-bar');

        // 避免重复创建
        if ( !$percent.length ) {
            $percent = $('<div class="progress progress-striped active">' +
              '<div class="progress-bar" role="progressbar" style="width: 0%">' +
              '</div>' +
            '</div>').appendTo( $li ).find('.progress-bar');
        }
        
        $li.find('p.state').text('上传中');
        $percent.css( 'width', percentage * 100 + '%' );
    });

    uploader.on( 'uploadSuccess', function( file,data ) {
        $( '#'+file.id ).find('p.state').text('已上传');
        $('#uploader-demo').append('<input  type="text" name="attachmentid" value="'+data.attachmentid+'"/>');   
        $( '#'+file.id ).addClass('upload-state-done');
    });

    uploader.on( 'uploadError', function( file ) {
        $( '#'+file.id ).find('p.state').text('上传出错');
    });

    uploader.on( 'uploadComplete', function( file ) {
        $( '#'+file.id ).find('.progress').fadeOut();
    });

    uploader.on( 'all', function( type ) {
        if ( type === 'startUpload' ) {
            state = 'uploading';
        } else if ( type === 'stopUpload' ) {
            state = 'paused';
        } else if ( type === 'uploadFinished' ) {
            state = 'done';
        }

        if ( state === 'uploading' ) {
            $btn.text('暂停上传');
        } else {
            $btn.text('开始上传');
        }
    });

    $btn.on( 'click', function() {
        if ( state === 'uploading' ) {
            uploader.stop();
        } else {
            uploader.upload();
        }
    });
    
    $("#aaa").click(attachmentids);	  //提交按钮
});  
  
</script>
</body>
</html>

Struts配置中 result = "success"  type="json"　

后台处理的action 方法：

public String uploadMeterialAttachment() throws Exception {				
		String path = ServletActionContext.getServletContext().getRealPath("upload");		
		File file  = new File(path);
		if (!file.exists()) {
			file.mkdirs();
		}		
		List<String>  list = new ArrayList<String>();
		String  filePath = ""; //文件保存路径
		String  fileName = ""; //文件名称
		for (int i = 0,l=upload.length;i<l; i++) {
			fileName = uploadFileName[i];
			File tmp =new File(file,System.nanoTime()+"_"+uploadFileName[i]);
			FileUtils.copyFile(upload[i], tmp);
			System.out.println(path+"/"+tmp.getName()); 
			filePath=("/upload/"+tmp.getName());
		}
		
		/**
		 * 保存到附件表
		 */
		Attachment attachment = new Attachment();			
		attachment.setFilename(fileName);
		attachment.setFilepath(filePath);
		Serializable ser = this.getBaseBean().saveObject(attachment);	
		
		if(ser != null ){
			JSONObject jsonObject = new JSONObject();
			jsonObject.put("attachmentid", ser);   		
		    this.getPrintWriter(jsonObject);
		}
		
		return Action.SUCCESS;
	}

将上传附件的 id 回调到前台，处理成一串字符串

var attachmentids = $("input[name='attachmentid']").map(function(){return $(this).val()}).get().join(",");

后台处理这些ids  只需 用 string的split方法：

　

	String[] ids = attachmentids.split(",");
	    if(ids != null){
	       for(String aid :ids){
	        	Attachment attachment = (Attachment) bean.findObject(Attachment.class,Long.parseLong(aid));

	        }
	    }

　　

　

　

　

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