afunms

1. 用XmlHttp获取xml，responseXml为空。
  
   解决方法：
   在web.xml中加入
   <mime-mapping>
      <extension>xml</extension>
      <mime-type>text/xml</mime-type>
   </mime-mapping>
   <mime-mapping>
      <extension>xsl</extension>
      <mime-type>text/xml</mime-type>
   </mime-mapping>

2. 用SmartUpload下载文件时出错   
   出错信息：
   java.io.IOException: 文件名、目录名或卷标语法不正确。
        at java.io.WinNTFileSystem.canonicalize0(Native Method)
        at java.io.Win32FileSystem.canonicalize(Win32FileSystem.java:395)
        at java.io.File.getCanonicalPath(File.java:531)
        at weblogic.servlet.internal.WebAppServletContext.getRealPath       

        (WebAppServletContext.java:666)
        at com.jspsmart.upload.SmartUpload.isVirtual(SmartUpload.java:1180)
        Truncated. see log file for complete stacktrace
        解决方法：自己写了一个Servlet来下载文件，代码如下：
  

 1public class DownLoad extends HttpServlet
 2{
 3    private static final long serialVersionUID = -84138329260803824L;
 4    public void init() throws ServletException
 5    {
 6    }
 7
 8    public void doGet(HttpServletRequest request, HttpServletResponse response) 
 9        throws ServletException, IOException
10    {
11        OutputStream os = null; 
12        FileInputStream fis = null;
13        try
14        {            
15            String fileName = request.getParameter("filename");  //要下载的文件,包括路径
16            String downFileName = fileName.substring(fileName.lastIndexOf("\\") + 1); //去掉路径
17            
18            os = response.getOutputStream();
19            File f = new File(fileName);
20            
21            response.setHeader("Content-type:", "application/octet-stream");
22            response.setHeader("Accept-Ranges:", "bytes");
23            response.setHeader("Accept-Length:", Long.toString(f.length()));
24            response.setHeader("Content-Disposition", "attachment; filename=" + downFileName);
25                
26            fis = new FileInputStream(f);
27            byte[] b = new byte[1024];    
28            int i = 0;    
29            while((i = fis.read(b)) > 0) 
30              os.write(b, 0 ,i);
31        }
32        catch (Exception e)
33        {
34            e.printStackTrace();
35        }
36        finally
37        {
38            fis.close();
39            os.flush();
40            os.close();
41        }
42    }
43
44    public void doPost(HttpServletRequest request, HttpServletResponse response) 
45       throws ServletException, IOException
46    {
47         doGet(request,response);
48    }
49}