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【JavaEE企业应用实战学习记录】servlet3.0上传文件

时间:2016-10-06 17:29:47      阅读:182      评论:0      收藏:0      [点我收藏+]

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 1 <%--
 2   Created by IntelliJ IDEA.
 3   User: Administrator
 4   Date: 2016/10/6
 5   Time: 14:20
 6   To change this template use File | Settings | File Templates.
 7 --%>
 8 <%@ page contentType="text/html;charset=UTF-8" language="java" %>
 9 <html>
10 <head>
11     <title>upload</title>
12 </head>
13 <body>
14 <form method="post" action="/upload" enctype="multipart/form-data">
15     文件名:<input type="text" id="name" name="name"><br/>
16     选择文件:<input type="file" id="file" name="file"><br/>
17     <input type="submit" value="上传">
18 </form>
19 </body>
20 </html>
 1 package sanglp.servlet;
 2 
 3 import javax.servlet.ServletException;
 4 import javax.servlet.annotation.MultipartConfig;
 5 import javax.servlet.annotation.WebServlet;
 6 import javax.servlet.http.HttpServlet;
 7 import javax.servlet.http.HttpServletRequest;
 8 import javax.servlet.http.HttpServletResponse;
 9 import javax.servlet.http.Part;
10 import java.io.IOException;
11 import java.io.PrintWriter;
12 import java.util.Collection;
13 
14 /**
15  * Created by Administrator on 2016/10/6.
16  */
17 @WebServlet(name = "upload",urlPatterns = {"/upload"})
18 @MultipartConfig
19 public class UploadServlet extends HttpServlet {
20     @Override
21     protected void service(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
22         //super.service(req, resp);
23         resp.setContentType("text/html;charset=GBK");
24         PrintWriter out=resp.getWriter();
25         //获取普通请求参数
26         String fileName=req.getParameter("name");
27         //获取上传文件的上传域
28         Part part=req.getPart("file");
29         out.println("上传文件的类型为"+part.getContentType()+"<br/>");
30         out.println("上传文件的大小为"+part.getSize()+"<br/>");
31         //获取文件上传的Header Name
32         Collection<String> headerNames=part.getHeaderNames();
33         for(String headerName:headerNames){
34             out.println(headerName+"-->"+part.getHeader(headerName)+"<br/>");
35         }
36         //将上传的文件写入服务器
37         part.write(getServletContext().getRealPath("/uploadFiles")+"/"+fileName);
38     }
39 }

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【JavaEE企业应用实战学习记录】servlet3.0上传文件

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原文地址:http://www.cnblogs.com/dream-to-pku/p/5933872.html

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