<script type="text/javascript" src="jquery.uploadify.js"></script>

$("#sysLogo").uploadify({

                    'uploader': '${ctx}/web/module/config/configupload/uploadSysLog.action',//文件上传action

                  //  'script': '${ctx}/web/module/config/configupload/uploadSysLog.action',

                  	'swf'      : 'uploadify.swf',

                    'cancelImg': 'cancel.png',

                    'folder': 'UploadFile',

                    'queueID': 'fileQueue', //上传队列id

                    'fileObjName' : 'sysLogoFiles', //后台获取的文件名称，

                    'auto': true,//是否自动上传

                    'multi': true, //是否支持多选

                    'onUploadSuccess' : function(file, data, response) { //上传成功后执行

                    	alert("sucess");

                    	console.log(file);

                    	console.log("data:"+data);

                    }

                });

//注：上面只是部分参数，uploadify还有很多参数，具体请自动搜索api

		                    <div class="controls">

		                        <input type="file" id="sysLogo" name="sysLogoFile" >

		                        <div id="fileQueue"></div>

		                    </div>

	public void uploadSysLog() throws IOException{

		System.out.println(sysLogoFiles);  //sysLogoFiles为全局变量，List<File>

		OutputStream fileOutputStream = null;

		InputStream in = null;

		File file = new File("d:/abc.jpg"); // 新建文件

		try {

			fileOutputStream = new FileOutputStream(file); // 创建文件流

			in = new FileInputStream(sysLogoFiles.get(0));

			int bytesRead = 0;

			byte data[] = new byte[1024 * 1024]; // 用于存放流数据

			while ((bytesRead = in.read(data)) > 0) {

				fileOutputStream.write(data, 0, bytesRead); // 写入文件流

			}

		} catch (RuntimeException e) {

			e.printStackTrace();

		} finally {

			if (fileOutputStream != null) {

				fileOutputStream.close();

				fileOutputStream = null;

			}

			if (in != null) {

				in.close();

				in = null;

			}

		}

		getResponse().getWriter().write("uploadify-cancel.png");//返回到页面的数据，此处随便返回一个图片路径

	}