解决文件上传取不到真实路径问题(fakepath)

2023-12-14 15:46| 来源: 网络整理| 查看: 265

1、问题描述:

前一段时间要做一个excel数据导入到数据库的功能,当时用的是google chrome,没有用form表单,仅仅一个组件,上传excel时怎么也去不到文件路径,不论是从哪个驱动器上传,文件路径都是:c:\fakepath\文件名.xls。

2、解决方案

网上转悠了老半天,没找到一个完美的方案,最后经个同事指导:

利用一个js(插件)ajaxfileupload.js,源码放到最后面,先看具体代码:

jsp:

下载号码模板选择文件：

注意: file input的name属性必须的,后面要用.

js代码:(17行用到了input的name属性)

文件上传到: url : '' + '/FileUpload?path=file/share',这里用了servlet(该servlet对FileUpload路径进行拦截)

当然可以用action

$.ajaxFileUpload方法的成功回调方法有参数data及status,其中从data可以得知上传上去的文件的名字:文件名=data.img

当然靠上面的不够的,真正上传的幕后是(servlet):

package com.hg.sale.service.upload; import java.io.File; import java.io.IOException; import java.io.PrintWriter; import java.text.SimpleDateFormat; import java.util.Date; import java.util.List; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import net.sf.json.JSONObject; import org.apache.commons.fileupload.FileItem; import org.apache.commons.fileupload.FileUploadException; import org.apache.commons.fileupload.disk.DiskFileItemFactory; import org.apache.commons.fileupload.servlet.ServletFileUpload; import org.apache.log4j.Logger; /** * 上传Service * * @author lvzhibo * */ public class FileUpload extends HttpServlet { static Logger logf=Logger.getLogger(FileUpload.class); private static final long serialVersionUID = 1L; protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { DiskFileItemFactory factory = new DiskFileItemFactory(); String param=request.getParameter("path"); String rename=request.getParameter("rename"); String name=request.getParameter("name"); String log=request.getParameter("log"); String path =""; if(param!=null){ path = request.getRealPath(param); }else{ path = request.getRealPath("/p_w_picpaths"); } // 设置文件存储位置 factory.setRepository(new File(path)); // 设置大小，如果文件小于设置大小的话，放入内存中，如果大于的话则放入磁盘中 factory.setSizeThreshold(1024 * 1024); ServletFileUpload upload = new ServletFileUpload(factory); // 这里就是中文文件名处理的代码，其实只有一行，serheaderencoding就可以了 upload.setHeaderEncoding("gbk"); try { List items = upload.parseRequest(request); for (FileItem item : items) { if (item.isFormField()) { } else { String fileName = item.getName(); if (fileName != null) { int pos = fileName.lastIndexOf("\\"); if (pos + 1 -1) && (dot 0)) { int dot = filename.lastIndexOf('.'); if ((dot >-1) && (dot 0 ) { setTimeout(function(){ if( !requestDone ) { // Check to see ifthe request is still happening uploadCallback( "timeout" ); } }, s.timeout); } try { var form = jQuery('#' + formId); jQuery(form).attr('action', s.url); jQuery(form).attr('method', 'POST'); jQuery(form).attr('target', frameId); if(form.encoding) { form.encoding = 'multipart/form-data'; } else { form.enctype = 'multipart/form-data'; } jQuery(form).submit(); } catch(e) { jQuery.handleError(s, xml, null, e); } if(window.attachEvent){ document.getElementById(frameId).attachEvent('onload', uploadCallback); } else{ document.getElementById(frameId).addEventListener('load', uploadCallback, false); } return {abort: function () {}}; }, uploadHttpData: function( r, type ) { var data = !type; data = type == "xml" || data ? r.responseXML : r.responseText; // ifthe type is "script", eval it in global context if( type == "script" ) { jQuery.globalEval( data ); } // Get the JavaScript object, ifJSON is used. if( type == "json" ) { eval（ "data = " + data ); } // evaluate scripts within html if( type == "html" ) { jQuery("").html(data).evalScripts(); } return data; } });

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