版主、各位大侠，小弟在此求教了！
我为了实现客户端导入功能，写了一个jsp页面用来form提交要导入的文件到服务器端，但在后台取读取不到文件的内容。请赐教！！！！
jsp代码如下：
- HTML code
<%@ page language="java" import="java.util.*" pageEncoding="GBK"%><% String path = request.getContextPath(); String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/"; String contextPath = request.getContextPath();%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html> <head> <base href="<%=basePath%>"> <title>文件上传</title> <script language="javascript" src="<%=basePath%>/pms/platform/pms.js"></script> <script type="text/javascript" src="<%=basePath%>common/ext/ext-base.js"></script> <script type="text/javascript" src="<%=basePath%>common/ext/ext-all.js"></script> <script type="text/javascript" src="<%=basePath%>common/ext/ext-lang-zh_CN.js"></script> <link rel="stylesheet" type="text/css" href="<%=basePath%>common/ext/resources/css/ext-all.css" /> <script language="javascript" src="<%=basePath%>/common/fileUpload/fileUploadAction.js"></script> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> <style type="text/css"> #jtxt{ color:#666666; font-size:12px; } </style> <script type="text/javascript"> var pbar1; //定义一个变量用于进度条对象 var btn1; //定义一个变量用于进按钮对象 Ext.onReady(function(){ pbar1=new Ext.ProgressBar({ //实例化进度条 renderTo:"div1", //进度条呈现的一个DIV width:350, //进度条的宽度 text:"上传进度..." //在进度条里的初始文本 }); //btn1=Ext.get("btnUpload"); //按钮对象 //btn1.on("click",isnull); //按钮事件，单击时调用f1()函数 //隐藏进度条 document.getElementById("div1").style.display='none'; }); var items = ["file","btnUpload","btnReset"]; function isnull(){ var file = document.getElementById("file").value; if(file==null || file==""){ alert("请选择上传的文件！"); return ; } document.getElementById("div1").style.display=''; f1(); } function f1(){ //实际文件没有上传完成效果 if(document.getElementById("hd").value==96){ document.getElementById("hd").value=95; } var i = document.getElementById("hd").value++;//取得当前进度和设置进度 pbar1.updateProgress(i/100.0); //让进度条更新到指定的进度。这个值是0-1之间的数，我让i/100.0,以让它的结果是一个小数 pbar1.updateText("进度:"+i+"%"); //进度条显示的文本 //当i==100的时候让按钮状态可以使用，并让i=1，再让进度条停止 if(i==100){ //设置相应元件可编辑 _setDisabled(items,false); //设置初始进度为0 document.getElementById("hd").value=0; try{ clearInterval(x); }catch(e){ return ; } } //设置相应元件状态为不可用 _setDisabled(items,true); setTimeout("f1()",1);//用setTimeout函数递归调用f1()函数，以达到进度条一直跑的效果 } /** *用于设置一些元件是否可编辑 */ function _setDisabled(items,isTrue){ for(var i=0;i<items.length;i++){ document.getElementById(items[i]).disabled=isTrue; } } /* *动态结束进度条，使其完成度为100% */ _closeProgress = function () { document.getElementById("hd").value=99; //f1(); } //隐藏进度条 _displayNone = function () { document.getElementById("div1").style.display='none'; document.getElementById("file").value = ""; } /* * 导入操作 */ function OperExport() { if (_isExporting) { alert("正在导入过程中，请稍候再操作..."); return; } var flowid = GetUrlQuery("flowid"); var patternid = GetUrlQuery("patternid"); var formworkname = GetUrlQuery("formworkname"); var startrownum = GetUrlQuery("startrownum"); var flag = GetUrlQuery("flag"); var list = parent.defaultForm.getCellsByType("EditGrid")[0]; var fileObj = document.getElementById("file"); var file = fileObj.value; if(file != "") { var option = confirm("确定导入文件 " + file + " ?"); if(option) {debugger; //file = file.replace("\", "\\"); isnull();//启动进度条 mainform = document.getElementById("myform"); mainform.action = parent.$appRoot+ "/servlet/com.sdjxd.pms.platform.serviceBreak.Invoke?_sender=page&_c=zyws.TJGLMethod&_m=impExcelData&_p0=\""+flowid+"\"&_p1=\""+patternid+"\"&_p2=\""+formworkname+"\"&_p3=\""+startrownum+"\"&_p4="+JSON.stringify(parent._fileExParam)+"&_p5=\""+file+"\"&_p6=\""+flag+"\""; mainform.submit(); _isExporting = true; } } else { alert("请先选择文件！"); } } /* * 重置文件选择内容 */ resetFileObj = function () { var file = document.getElementById("file"); file.value = ""; } //控制上传文件格式 var fileFormat = function(){ var file = document.getElementById("file").value; if(file==null || file==""){ return ; } //截取扩展名并转换为小写 var str = file.substring((file.length-4),file.length).toLowerCase(); if(str==null || str != ".xls" && str != "xlsx"){ document.getElementById("myform").reset(); alert("请上传正确的电子表格文件！"); return ; } } /* * 回调函数 */ var impResultBack = function (result, sMsg) { _isExporting = false; _closeProgress();//结束进度条 setTimeout("sleep('"+sMsg+"')",1000); } //暂停1秒执行函数，使上传进度效果更好 var sleep = function(sMsg){ var list = parent.defaultForm.getCellsByType("EditGrid")[0]; alert(sMsg) _displayNone();//隐藏进度条 if (parent._fileUploadWin) parent._fileUploadWin.hide(); list.refresh(); } </script> </head> <body style="font-size:12px; width:100%; margin:0px; border-width:0px; overflow:auto; text-align:center; ; background-color:#E4EEEF;"> <br> <input id="hd" type="hidden" value="0"> <div id="div1"></div> <iframe name="upload_iframe" id="upload_iframe" style="width: 400px; height: 100px;display:none" src="about:blank"></iframe> <form id="myform" name="myform" target="upload_iframe" enctype="multipart/form-data" action="" method="post"> <p> </p> <table width="413"> <tr> <td width="60" align="right" style="word-break:keep-all;white-space:nowrap;"> <span id="jtxt">文件名: </span> </td> <td width="353" align="left"> <input name="file" type="file" id="file" style="border:1px solid #92C1ED; background-color:#FFF;" onkeydown="return false;" size="40" height="39px" onpaste="return false;" onchange="fileFormat();"/> </td> </tr> <tr> <td width="60"> </td> <td width="353"> </td> </tr> <tr> <td width="60"> </td> <td align="right" width="353"> <input id="btnUpload" type="button" onclick="OperExport();" style="border:1px solid #92C1ED;" value="上 传" /> <input id="btnReset" type="reset" onclick="resetFileObj();" style="border:1px solid #92C1ED;" value="重 置" /> </td> </tr> </table> </form> </body></html>