<%@ page language="java" pageEncoding="UTF-8"
    contentType="text/html;charset=UTF-8" import="com.jspsmart.upload.*"%>
<% 
// 新建一个SmartUpload对象 
SmartUpload su = new SmartUpload(); 
// 初始化 
su.initialize(pageContext); 
// 设定contentDisposition为null以禁止浏览器自动打开文件， 
//保证点击链接后是下载文件。若不设定，则下载的文件扩展名为 
//doc时，浏览器将自动用word打开它。扩展名为pdf时， 
//浏览器将用acrobat打开。 
su.setContentDisposition(null); 
// 下载文件 
su.downloadFile("/document/"+(String)request.getAttribute("fileName")); 
out.clear();
out=pageContext.pushBody();
%>

这是我用的下载jsp，用的是SmartUpload这个包做下载，有一个情况会出现这个问题就是在点击下载时（如果装有迅雷或其它下载工具会自动启用）如果关闭下载工具想用浏览器下载就会报如下的错误，现在求一个解决方案，有什么好的下载方式可以避免这个问题的发生。










[ERROR]http-8081-10-org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/].[action]-Servlet.service() for servlet action threw exception
java.io.IOException
    at org.apache.coyote.http11.InternalAprOutputBuffer.flushBuffer(InternalAprOutputBuffer.java:696)
    at org.apache.coyote.http11.InternalAprOutputBuffer$SocketOutputBuffer.doWrite(InternalAprOutputBuffer.java:726)
    at org.apache.coyote.http11.filters.IdentityOutputFilter.doWrite(IdentityOutputFilter.java:118)
    at org.apache.coyote.http11.InternalAprOutputBuffer.doWrite(InternalAprOutputBuffer.java:532)
    at org.apache.coyote.Response.doWrite(Response.java:560)
    at org.apache.catalina.connector.OutputBuffer.realWriteBytes(OutputBuffer.java:353)
    at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:352)
    at org.apache.catalina.connector.OutputBuffer.writeBytes(OutputBuffer.java:381)
    at org.apache.catalina.connector.OutputBuffer.write(OutputBuffer.java:370)
    at org.apache.catalina.connector.CoyoteOutputStream.write(CoyoteOutputStream.java:89)
    [color=#FF6600]at com.jspsmart.upload.SmartUpload.downloadFile(SmartUpload.java:579)
    at com.jspsmart.upload.SmartUpload.downloadFile(SmartUpload.java:508)
    at com.jspsmart.upload.SmartUpload.downloadFile(SmartUpload.java:476)[/color]
    at org.apache.jsp.webs.report.load_jsp._jspService(load_jsp.java:67)
    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:377)
    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 org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)
    at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436)
    at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:374)
    at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)
    at org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1063)
    at org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProcessor.java:386)
    at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:229)
    at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
    at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.catalina.core.ApplicationFilterChain.i