jsp实现文件上传——douploadFile.jsp

<%@page import="java.io.File"%>
<%@page import="org.apache.commons.fileupload.FileItem"%>
<%@page import="org.apache.commons.fileupload.disk.DiskFileItemFactory"%>
<%@page import="org.apache.commons.fileupload.FileItemFactory"%>
<%@page import="org.apache.commons.fileupload.servlet.ServletFileUpload"%>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
	request.setCharacterEncoding("utf-8");
	//1.判断是不是文件上传表单
	boolean ismultipart = ServletFileUpload.isMultipartContent(request);
	if (ismultipart) {
		//2.创建文件上传工厂
		FileItemFactory fac = new DiskFileItemFactory();
		//3.创建文件上传对象
		ServletFileUpload fileUpload = new ServletFileUpload(fac);
		//4.解析请求
		List<FileItem> fileItemList = fileUpload.parseRequest(request);
		//5.遍历集合，获取相应的数据
		try {
	for (FileItem item : fileItemList) {
		//判断是普通表单数据还是文件数据
		if (item.isFormField()) {
			//true为普通表单
			//获取提交过来表单name属性值
			//文件上传中不能用下列方法取数据
			//request.getParameter("userName");
					String filedName = item.getFieldName();
					if (filedName.equals("userName")) {
						//封装用户信息
						System.out.println("用户名"
								+ item.getString("utf-8"));
					} else if (filedName.equals("userPwd")) {
						System.out.println("密码"
								+ item.getString("utf-8"));
					}
				} else {
					//false为文件表单
					//6.获取文件名（全路径）
					String fullFileName = item.getName();
					//out.print(fullFileName);
					File file1 = new File(fullFileName);
					//只获取文件名，不包含路径
					String fileName = file1.getName();
					//7.根据虚拟路径来获取物理路径
					String uploadPath = application
							.getRealPath("upload/");
					File file2 = new File(uploadPath, fileName);
					item.write(file2);
					out.print("上传成功！");
				}//else
			}//for
		} catch (Exception ex) {
			ex.printStackTrace();
			out.print("上传失败");
		}
	}
%>