如何解决在jsp页面上导入.xls文件报错问题

在jsp页面上导入.xls文件，报错：

java.io.IOException: Posted content type isn't multipart/form-data

at com.oreilly.servlet.multipart.MultipartParser.<init>(MultipartParser.java:166)

at com.oreilly.servlet.MultipartRequest.<init>(MultipartRequest.java:222)

at org.apache.jsp.dxt.sms.multi_005fsender.upload_jsp._jspService(upload_jsp.java:406)

at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:386)

at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)

at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at sdcncsi.ict.security.AclFilter.doFilter(AclFilter.java:78)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at sdcncsi.ict.web.RequestFilter.doFilter(RequestFilter.java:108)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:96)

at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)

at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)

at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)

at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)

at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)

at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)

at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)

at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)

at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)

at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)

at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)

at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)

at java.lang.Thread.run(Thread.java:619)

不知道是什么原因？应该怎样来解决呢？

解决这个错误，需要在form表单里面加上加enctype=”multipart/form-data” 这个属性，不过表单请求传到另一个jsp或servlet里时，是不能用request.getParameter()来获取到各个表单元素的值的，如下：

复制代码代码如下:

<%@ page language="java" contentType="text/html; charset=UTF-8"

pageEncoding="UTF-8"%>

<%@ page session="false"%>

<%@ include file="/common/taglibs.jsp"%>

<%@ include file="/common/meta.jsp"%>

<%@ include file="/common/js.jsp"%>

<%@ page import="java.util.*"%>

<%@ page import="java.text.SimpleDateFormat"%>

<%@ page import="sdcncsi.ict.util.SysPara"%>

<%@page import="java.io.*,java.util.*,sdcncsi.ict.base.attachment.*"%>

<%@ page import="sdcncsi.ict.util.RequestUtil"%>

<%@page import="com.oreilly.servlet.MultipartRequest"%>

String res="true";

request.setCharacterEncoding("UTF-8");

response.setContentType("text/html; charset=UTF-8");

String file=(String)request.getParameter("t_file_excel");

//System.out.println(file);

String accountid3=(String)request.getParameter("accountid3");

String saveDirectory = "";

//获取配置参数,文件类型,文件大小

/*String date = "";

SimpleDateFormat gs = new SimpleDateFormat("yyyyMMdd");

Date now = new Date();

date = gs.format(now);*/

FileFuns fileFuns = new FileFuns();

try {

//判断文件类型

String file_type=SysPara.getValue("dxt_sms_multi_sender_file_type");

if(!file.substring(file.lastIndexOf(".")+1).equals(file_type))

{

out.println("<script>");

out.println("alert('错误：文件类型错误！');");

out.println("</script>");

return;

}

//判断文件夹是否存在，不存在创建

String file_path = SysPara.getValue("dxt_sms_multi_sender_file_path");

file_path=file_path.replace("","//");

if (!fileFuns.getFileIsExists(file_path)) {

fileFuns.Createdir(file_path);

}

String file_size = SysPara.getValue("dxt_sms_multi_sender_file_size");

//文件上传后，保存在saveDirectory

saveDirectory = file_path;

RandomFileRenamePolicy rfrp = new RandomFileRenamePolicy();

MultipartRequest multi = null;

System.out.println("saveDirectory"+saveDirectory);

System.out.println("file_size"+file_size);

multi = new MultipartRequest(request, saveDirectory, Integer

.parseInt(file_size), "utf-8", rfrp);

System.out.println("222"+multi);

//输出反馈信息

Enumeration files = multi.getFileNames();

while (files.hasMoreElements()) {

String name = (String) files.nextElement();

File f = multi.getFile(name);

if (f != null) {

String fileName = multi.getFilesystemName(name);

saveDirectory+=fileName;

}

} catch (Exception eu) {

res="false";

eu.printStackTrace();

out.println("<script>");

out.println("alert('错误：文件大小超出限制！');");

out.println("</script>");

}

<head>

function myunload(){

window.opener.callback_getPageData_table_list(1);

}

</script>

</head>

</body>

var res='<%=res%>';

if(res=='true')

{

sys_ajaxPost("/dxt/multi_sender.do?method=importmulti_sender&accountid=<%=accountid3%>&excelpath=<%=saveDirectory %>","",function(msg){

if(msg.result==true){

location.href="${ctx}/dxt/sms/multi_sender/multi_sender.jsp?result=true";

}else{

location.href="${ctx}/dxt/sms/multi_sender/multi_sender.jsp?result=false";

}

});

}

</script>