1、jsp页面操作文件:
1 <%@ page language="java" import="java.util.*" pageEncoding="gb2312"%> 2 <html> 3 <head> 4 <title>上传文件 </title> 5 <link rel="stylesheet" type="text/css" href="../css/uploadfile.css"> 6 <link rel="stylesheet" type="text/css" href="../css/footer.css"> 7 <script type="text/javascript" src="../js/uploadfile.js"></script> 8 </head> 9 <body> 10 <div class="container"> 11 <form action="../upLoadFileServlet" name="uploadform" enctype="multipart/form-data" method="post"> 12 <div class="back"><span class="cleckback" onclick="javascript:history.back()" style="padding-right: 50px;">返回上一级</span></div> 13 <div class="upfile-div" align="center"> 14 <div class="title-div">上传文件</div> 15 <table class="toggle-table"> 16 <tr> 17 <td>上传者姓名:</td> 18 <td><input type="text" id="uploadfileuser" name="uploadfileusername" class="inputname"/></td> 19 </tr> 20 <tr> 21 <td>上 传 时 间:</td> 22 <td><input type="datetime-local" class="inputtime"></td> 23 </tr> 24 <tr> 25 <td>选择上传文件:</td> 26 <td><input type="file" name="uploadfile" class="seclectedfile"/></td> 27 </tr> 28 </table> 29 <div class="toggle-btns"> 30 <input type="submit" value="上传" class="mybtn"/> 31 <input type="button" value="取消" class="mybtn" onclick="uploadUserCheck()"/> 32 </div> 33 </div> 34 </form> 35 </div> 36 <div class="footer"><jsp:include page="footer.jsp"></jsp:include></div> 37 </body> 38 </html>
2、uploadresult.jsp：
1 <%@ page language="java" import="java.util.*" contentType="text/html; charset=gb2312"%>
2 <%
3 String path = request.getContextPath();
4 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
5 %>
6
7 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
8 <html>
9 <head>
10 <base href="<%=basePath%>">
11
12 <title>My JSP ‘uploadresult.jsp‘ starting page</title>
13
14 <meta http-equiv="pragma" content="no-cache">
15 <meta http-equiv="cache-control" content="no-cache">
16 <meta http-equiv="expires" content="0">
17 <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
18 <meta http-equiv="description" content="This is my page">
19 <!--
20 <link rel="stylesheet" type="text/css" href="styles.css">
21 -->
22
23 </head>
24
25 <body>
26 <p>121312313132123132</p>
27 <%
28 String msg = (String)request.getAttribute("upload.message");
29 if (msg != null)
30 {
31 %>
32 <%= msg %>
33 <%
34 }
35 %>
36 </body>
37 </html>
3、servlet:
1 package web.servlet;
2
3 import java.io.File;
4 import java.io.IOException;
5 import java.util.Iterator;
6 import java.util.List;
7
8 import javax.servlet.ServletException;
9 import javax.servlet.http.HttpServlet;
10 import javax.servlet.http.HttpServletRequest;
11 import javax.servlet.http.HttpServletResponse;
12
13 import org.apache.commons.fileupload.FileItem;
14 import org.apache.commons.fileupload.disk.DiskFileItemFactory;
15 import org.apache.commons.fileupload.servlet.ServletFileUpload;
16
17 @SuppressWarnings("serial")
18 public class UpLoadFileServlet extends HttpServlet {
19
20 private int cachesize = 1024 * 1024;
21
22 public void doGet(HttpServletRequest request, HttpServletResponse response)
23 throws ServletException, IOException {
24
25 this.doPost(request, response);
26 }
27
28 public void doPost(HttpServletRequest request, HttpServletResponse response)
29 throws ServletException, IOException {
30
31 response.setCharacterEncoding("gb2312");
32 response.setContentType("text/html;charset=gb2312");
33 request.setCharacterEncoding("gb2312");
34 String uploadfileUserName = request.getParameter("uploadfileusername");
35
36 // System.out.println(uploadfileUserName);
37
38 DiskFileItemFactory factory = new DiskFileItemFactory();
39 factory.setRepository(new File("e:/tmp/"));//设置文件缓存路径
40 factory.setSizeThreshold(cachesize); //设置文件上传的上限，-1表示无上限
41 ServletFileUpload upload = new ServletFileUpload(factory);
42 if (!ServletFileUpload.isMultipartContent(request)){
43 return;
44 }
45 try {
46
47 @SuppressWarnings("unchecked")
48 List<FileItem> items = upload.parseRequest(request);//上传文件并解析出所有字段
49 Iterator<FileItem> iter = items.iterator();
50 while(iter.hasNext())
51 {
52 FileItem item = iter.next();
53 if (item.isFormField()) //表单字段
54 {
55 System.out.println(item.getFieldName());
56 System.out.println(item.getString());
57 }
58 else
59 {
60 if (item.getName() != null && !item.equals(""))
61 {
62 System.out.println(item.getName());
63
64 File tempFile = new File(item.getName()); //获得临时文件(创建内存文件)
65 String filename = tempFile.getName();
66
67 File file = new File(this.getServletContext().getRealPath("/")+"AcceptedUploadFiles",filename);
68 // OutputStream os = new FileOutputStream(file);
69 item.write(file);
70 request.setAttribute("upload.message", "成功上传文件："+filename);
71 }
72 else
73 {
74 request.setAttribute("upload.message", "请选择上传文件");
75 }
76
77 }
78 }
79 } catch (Exception e) {
80 request.setAttribute("upload.message", "文件上传失败");
81 }
82 //dispatcher跳转其他资源
83 request.getRequestDispatcher("jsp/uploadresult.jsp").forward(request,response);
84 }
85
86 }
时间： 2024-10-11 06:20:02