文件上传 smartUpload

文件上传

martUpload

步骤如下：
1、实例化smartUplpad对象 SmartUpload smart = new SmartUpload();
2、初始化上传的操作 smart.initalize(pageContext);
3、准备上传 smart.upload();
4、保存文件 smart.save("upload");
如果要进行文件的上传，则肯定要对表单进行封装，，但是表单一旦封装后无法使用request.getParameter()接受参数；

实现文件上传的代码：

form表单代码：

 1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2 pageEncoding="UTF-8"%>
 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 4 <html>
 5 <head>
 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 7 <title>Insert title here</title>
 8 </head>
 9 <body>
10 <form action="smartupload_demo02.jsp" method="post" enctype="multipart/form-data">
11 姓名：<input type="text" name="uname"><br> 
12 请选择要上传的文件:<input type="file" name="pic" /><br>
13 <input type="submit" value="上传">
14 <input type="reset" value="重置">
15 </form>
16 </body>
17 </html>
18 
19

上传文件代码：

 1 <%@page import="com.jspsmart.upload.SmartUpload"%>
 2 
 3 <%@page import="javax.servlet.ServletException" %>
 4 <%@page import="java.io.File" %>
 5 <%@ page language="java" contentType="text/html; charset=UTF-8"
 6 pageEncoding="UTF-8"%>
 7 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 8 <html>
 9 <head>
10 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
11 <title>Insert title here</title>
12 </head>
13 <body>
14 <% String realPath = application.getRealPath("");%>
15 <%out.print(realPath);
16 File file = new File(realPath+"/upload");
17 file.mkdir();
18 SmartUpload smart = new SmartUpload();
19 smart.initialize(pageContext) ;    // 初始化上传操作
20 smart.upload() ;    // 上传准备
21 smart.save("upload") ;    // 文件保存 */
22 %>
23 </body>
24 </html>
25 
26

以下为：图片自动命名 IP+shijian+三位随机数

usebean代码：

 1 package com.yunshidai.zhm.smartupload;
 2 
 3 import java.io.File;
 4 import java.text.SimpleDateFormat;
 5 import java.util.Date;
 6 import java.util.Random;
 7 
 8 public class IPTimeStamp {
 9 private SimpleDateFormat sdf = null ;
10 private String ip = null;
11 public IPTimeStamp(){
12 
13 }
14 public IPTimeStamp(String ip){
15 this.ip = ip ;
16 }
17 public String getIPTimeRand(){
18 StringBuffer buf = new StringBuffer();
19 if (this.ip !=null) {
20 String s[] = this.ip.split("\\.");
21 for (int i = 0; i < s.length; i++) {
22 buf.append(this.addZero(s[i], 3));
23 }
24 }
25 buf.append(this.getTimeStamp());
26 Random r = new Random();
27 for (int i = 0; i < 3; i++) {
28 buf.append(r.nextInt(10));
29 }
30 return buf.toString();
31 }
32 public String getTimeStamp(){
33 this.sdf = new SimpleDateFormat("yyyyMMddHHmmssSSS");
34 return this.sdf.format(new Date());
35 }
36 public String getDate(){
37 this.sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS");
38 return this.sdf.format(new Date());
39 }
40 private String addZero(String str,int len){
41 StringBuffer s = new StringBuffer();
42 s.append(str);
43 while(s.length()<len){
44 s.insert(0, "0");
45 }
46 return str.toString();
47 }
48 public static void main(String[] args) {
49 System.out.println(new IPTimeStamp("192.168.1.1").getIPTimeRand());
50 }
51 }
52 
53

form表单代码：

 1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2 pageEncoding="UTF-8"%>
 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 4 <html>
 5 <head>
 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 7 <title>Insert title here</title>
 8 </head>
 9 <body>
10 <form action="smartupload_demo03.jsp" method="post" enctype="multipart/form-data">
11 姓名：<input type="text" name="uname"><br> 
12 请选择要上传的文件:<input type="file" name="pic" /><br>
13 <input type="submit" value="上传">
14 <input type="reset" value="重置">
15 </form>
16 </body>
17 </html>

文件上传代码：

 1 <%@page import="com.jspsmart.upload.SmartUpload"%>
 2 <%@page import="javax.servlet.ServletException" %>
 3 <%@page import="com.yunshidai.zhm.smartupload.*" %>
 4 <%@page import="java.io.File" %>
 5 <%@ page language="java" contentType="text/html; charset=UTF-8"
 6 pageEncoding="UTF-8"%>
 7 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 8 <html>
 9 <head>
10 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
11 <title>Insert title here</title>
12 </head>
13 <body>
14 <%
15 SmartUpload smart = new SmartUpload();
16 smart.initialize(pageContext) ;    // 初始化上传操作
17 smart.upload() ;    // 上传准备
18 String name= smart.getRequest().getParameter("uname");
19 IPTimeStamp its = new IPTimeStamp(request.getRemoteAddr());
20 String ext = smart.getFiles().getFile(0).getFileExt();
21 String fileName = its.getIPTimeRand()+"."+ext ;
22 smart.getFiles().getFile(0).saveAs(this.getServletContext().
23 getRealPath("")+"/upload"+java.io.File.separator+
24 fileName); 
25 %>
26 <h2>姓名：<%=name%></h2>
27 <%=fileName %>
28 <img src="<%=fileName%>">
29 
30 </body>
31 
32 </html>
33 
34

注意事项：之前要建立一个upload的文件夹

需要帮忙的解决：现在的照片给你传到服务器的文件夹中，但是在界面显示还存在问题，还没有解决。

posted @ 2013-12-26 13:56 红梅姐姐阅读(259) 评论(0) 编辑收藏举报

红梅姐姐

文件上传 smartUpload

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