struts2下利用jquery、ajaxfileupload实现无刷新上传文件

要想在struts下实现无刷新上传文件,有很多种方式,但我这里用的是ajaxfileupload这个js库,感觉还比较好用,建议从ajaxfileupload官网下载它的包,里面有比较完整的例子,不过是php的,如果是jsp开发,可以参考我的代码,好了,废话不多说,直接上代码(什么struts配置我就不啰嗦了,直接附上上传相关的代码)

需要的东西:struts2-json-plugin-2.2.1.jar、jquery.js和ajaxfileupload.js(附件可下载)

上传文件的fileUpload.jsp

<%@ page language="java" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
  <head>
    <base href="<%=basePath%>" />
	<title>Excel导入</title>
	<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    
    <!-- div(文件上传)css -->
    <link href="css/fileDiv.css" rel="stylesheet" type="text/css" />
    <!-- 一定要注意js加载的前后顺序,先加载jquery再加载ajaxfileupload -->
    <script type="text/javascript" src="jscript/jquery.js"></script>
    <script type="text/javascript" src="jscript/ajaxfileupload.js"></script>
	<!-- div(文件上传)js -->
	<script type="text/javascript" src="jscript/fileDiv.js"></script>
	<script type="text/javascript">
	function ajaxFileUpload()
	{
		//starting setting some animation when the ajax starts and completes
		$("#loading")
		.ajaxStart(function(){
			$(this).show();
		})
		.ajaxComplete(function(){
			$(this).hide();
		});
		
		/*
			prepareing ajax file upload
			url: the url of script file handling the uploaded files
                        fileElementId: the file type of input element id and it will be the index of  $_FILES Array()
			dataType: it support json, xml
			secureuri:use secure protocol
			success: call back function when the ajax complete
			error: callback function when the ajax failed
			
                */
		$.ajaxFileUpload
		(
			{
				url:‘management/excel_Operation!importExcelWms.jspx‘,
				secureuri:false,
				fileElementId:‘file‘,
				dataType: ‘json‘,
				data: {//加入的文本参数  
		            module_number: "${module_number}",
		            right: "${right}"
	        	},
				success: function (data)
				{
					alert(data.message);
				},
				error: function (data, e)
				{
					alert("错误信息:"+e);
				}
			}
		)
		

	}
	</script>
  </head>
  
  <body>
  <!-- 文件上传div -->
  <div class="fileDiv" id="fileDiv">
  	<div class="fileDiv-top">数据导入</div>
  	<form action="" id="fileForm" method="post" enctype="multipart/form-data">
  	
  	<div class="fileDiv-search">
	  	请选择文件:<input type="file" name="file" id="file" class="input-normal"/><br />
	  	<div class="fileDiv-button">
	  	<img  src="img/loading.gif" id="loading" style="display: none; width: 50px; height: 50px"/>
		<a class="button-white" href="javascript:operate(‘management/excel_Operation!downloadExcel.jspx‘);"><span>模板下载</span></a>
		<a class="btn-lit" id="btn_upload" name="btn_upload" href="javascript:ajaxFileUpload();"><span>开始导入</span></a>
	  	<a class="button-white" href="${backUrl }"><span>返回</span></a>
		</div>
	</div>
	<input type="hidden" name="module_number" id="module_number" value="${module_number }"/>
	</form>
	<div class="fileDiv-content">
	为减少错误,请在导入数据前下载最新Excel模板!<br />
	说明<br />
    1、淡黄色代表该字段(必填)<br />
    2、淡橙色代表该字段有代码表(必填)<br />
    3、淡绿色代表该字段有代码表(选填)
	</div>
  </body>
</html>

?Excel_OperationAction部分处理方法

// 模块导入-wms
	public void importExcelWms() {
		JSONObject jsonObj = new JSONObject();
		String module_number = getRequest().getParameter("module_number");
		String right = getRequest().getParameter("right");
		HttpSession session = getRequest().getSession(false);
		UserDto userDto = (UserDto) session.getAttribute("USER_INFO");
		
		String table_dm = new ExcelReader().findName("table_dm",module_number);;
		String view_dm = module_number;
		String mk_dm = module_number;
		InputStream is = null;
		if (file == null) {
			jsonObj.put("message", "没有选择文件,请选择要导入的文件!");
			write(jsonObj.toString());
			return ;
			
		}
		try {
			
			 is = new BufferedInputStream(new FileInputStream(file));
		} catch (FileNotFoundException e) {

			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		String msg = new String();
		
		if (!Utils.isValidString(table_dm) || !Utils.isValidString(view_dm) || !Utils.isValidString(mk_dm)) {
			jsonObj.put("message", "模块信息有误,请重新导入(如果多次不成功,请与管理员联系)!");
			write(jsonObj.toString());
			return ;
		} else {
			msg = new ExcelReader().excelImportWms(table_dm, view_dm, mk_dm, is,userDto);
		}

		try {
			if (is != null) {
				is.close();
			}
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		jsonObj.put("message", msg);
		write(jsonObj.toString());
		return ;
 	}

?write方法:

/**
	 * 功能描述:页面输出
	 * 
	 * @param content
	 *            输出的内容
	 */
	protected void write(String content) {
		if (content != null) {
			HttpServletResponse response = getResponse();
			response.setContentType("text/html");
			response.setCharacterEncoding("UTF-8");
			try {
				response.getWriter().println(content);
				response.getWriter().flush();
				response.getWriter().close();
			} catch (IOException e) {
			}
		}
	}

?

?

?有一个需要注意的地方:到底后台的值怎么传到前台去呢,最好的方法就是通过json传值。

需要的js及jar文件附件里有

郑重声明:本站内容如果来自互联网及其他传播媒体,其版权均属原媒体及文章作者所有。转载目的在于传递更多信息及用于网络分享,并不代表本站赞同其观点和对其真实性负责,也不构成任何其他建议。