怎样得到:ENCTYPE="multipart/form-data"中提交的表单的值?

Question

String xgsj=request.getParameter("xgsj");得不到值为什么？

Answer 1

private ServletConfig config;
  private String[] fileName;  final public void init(ServletConfig config) throws ServletException {
    this.config = config;
  }
  final public ServletConfig getServletConfig() {
    return config;
  }
      SmartUpload mySmartUpload=new SmartUpload();
      // Initialization
      mySmartUpload.initialize(config,request,response);      
String operation=mySmartUpload.getRequest().getParameter("operation").trim();

Answer 2

mySmartUpload.initialize(pageContext);与mySmartUpload.initialize(config,request,response);关系？

Answer 3

希望你能看明白：:)m_requtest: HttpServletRequest
m_formRequest: 
        int m_totalBytes = m_request.getContentLength();
        Byte[] m_binArray = new byte[m_totalBytes];
        int j;
        for(; i < m_totalBytes; i += j)
            try
            {
                m_request.getInputStream();
                j = m_request.getInputStream().read(m_binArray, i, m_totalBytes - i);
            }
            catch(Exception exception)
            {
            }        for(; !flag1 && m_currentIndex < m_totalBytes; m_currentIndex++)
            if(m_binArray[m_currentIndex] == 13)
                flag1 = true;
            else
                m_boundary = m_boundary + (char)m_binArray[m_currentIndex];        if(m_currentIndex == 1)
            return;
        for(m_currentIndex++; m_currentIndex < m_totalBytes; m_currentIndex = m_currentIndex + 2)
        {
            String s1 = getDataHeader();
            m_currentIndex = m_currentIndex + 2;
            boolean flag3 = s1.indexOf("filename") > 0;
            String s3 = getDataFieldValue(s1, "name");
             getDataSection();
             String s11 = new String(m_binArray, m_startData, (m_endData - m_startData) + 1);
                putParameter(s3, s11);
            if((char)m_binArray[m_currentIndex + 1] == '-')
                break;
        }private void getDataSection()
    {
        boolean flag = false;
        String s = new String();
        int i = m_currentIndex;
        int j = 0;
        int k = m_boundary.length();
        m_startData = m_currentIndex;
        m_endData = 0;
        while(i < m_totalBytes) 
            if(m_binArray[i] == (byte)m_boundary.charAt(j))
            {
                if(j == k - 1)
                {
                    m_endData = ((i - k) + 1) - 3;
                    break;
                }
                i++;
                j++;
            } else
            {
                i++;
                j = 0;
            }
        m_currentIndex = m_endData + k + 3;
    }
protected void putParameter(String s, String s1)
    {
        Hashtable m_parameters = new Hashtable();
        int m_counter = 0;
        if(s == null)
            throw new IllegalArgumentException("The name of an element cannot be null.");
        if(m_parameters.containsKey(s))
        {
            Hashtable hashtable = (Hashtable)m_parameters.get(s);
            hashtable.put(new Integer(hashtable.size()), s1);
        } else
        {
            Hashtable hashtable1 = new Hashtable();
            hashtable1.put(new Integer(0), s1);
            m_parameters.put(s, hashtable1);
            m_counter++;
        }
    }

Answer 4

// Initialization
mySmartUpload.initialize(pageContext);
  
// Upload
mySmartUpload.upload();String path = mySmartUpload.getRequest().getParameter("PATH")

Answer 5

SmartUpload.initialize(config,request,response); 中的config,request,response
private ServletConfig config;
    private ServletResponse response;
    PageContext pageContext;
 ServletRequest request;
这样定义对话.

Answer 6

SmartUpload.initialize(config,request,response); 中的config,request,response
private ServletConfig config;
    private ServletResponse response;
    PageContext pageContext;
 ServletRequest request;
这样定义对话为什么不对啊?

Answer 7

JSP环境中用
mySmartUpload.initialize(pageContext);servlet中用
SmartUpload.initialize(config,request,response);