demo1.jsp

《精通JSP编程 》源代码(赵强那本) 很有用的源代码

<%@ page contentType="text/html;charset=GB2312" %>
<%@ page import="org.apache.commons.fileupload.*"%>
<%@ page import="java.util.*"%>
<%@ page import="java.io.*"%>

<%  
boolean isMultipart = FileUpload.isMultipartContent(request);
if(isMultipart==true)
 {
  	DiskFileUpload upload = new DiskFileUpload();

 	List items = upload.parseRequest(request);

	Iterator itr = items.iterator();
	while(itr.hasNext()) {
	 FileItem item = (FileItem) itr.next();
	  // 检查当前的项目是普通的表单元素，还是一个上传的文件
	  if(item.isFormField()) {
	      // 获得表单域的名字
	        String fieldName = item.getFieldName();
	         // 如果表单域的名字是name…
	      if(fieldName.equals("name"))
	           out.println("the field name is " + fieldName);
	           out.println("<br>");
	      } else {
	    out.println("the upload filename is " + item.getName());
	    out.println("<br>");
	}
       }
   }
   else {
    out.println("the enctype must be multipart/form-data");
   }    

%>