文件上传时的故障，请高手指点

hxs0117144 2010-10-04 10:58:59

我的处理页面代码如下：

<%@ page contentType="text/html; charset=gb2312" language="java" errorPage="" %>

<%@ page import="java.util.*,com.jspsmart.upload.*" %>

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

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

<html>

<head>

<title>文件上传处理页面</title>

<meta http-equiv="Content-Type" content="text/html; charset=gb2312">

</head>

<body>

<%

    SmartUpload file1 = new SmartUpload();

    file1.initialize(pageContext);

    file1.upload( );

    

    Date date=new Date(); 

    String   dateFormatStr="yyyyMddHmmssSS";

    SimpleDateFormat simpleFormat=new SimpleDateFormat(dateFormatStr);

    String  datetime=simpleFormat.format(date);

    com.jspsmart.upload.File   myFile = file1.getFiles().getFile(0); 

    myFile.saveAs("/imag/"+ datetime+"."+myFile.getFileExt());

    out.println("文件上传成功！<hr>");

 %>

</body>

</html>

编译时为何出现下列信息：

org.apache.jasper.JasperException: An exception occurred processing JSP page /Da.jsp at line 14

11: <%
12: SmartUpload file1 = new SmartUpload();
13: file1.initialize(pageContext);
14: file1.upload( );
15:
16: Date date=new Date();
17: String dateFormatStr="yyyyMddHmmssSS";

Stacktrace:
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:505)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:416)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

root cause

java.lang.NegativeArraySizeException
com.jspsmart.upload.SmartUpload.upload(SmartUpload.java:218)
org.apache.jsp.Da_jsp._jspService(Da_jsp.java:70)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:374)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

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