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Stuts 文件上传

Stuts 文件上传

三种上传方案
1、上传到tomcat服务器上传图片的存放位置与tomcat服务器的耦合度太高
2、上传到指定文件目录，添加服务器与真实目录的映射关系，从而解耦上传文件与tomcat的关系文件服务器
3、在数据库表中建立二进制字段，将图片存储到数据库

今天我们利用2、上传到指定文件目录，添加服务器与真实目录的映射关系，从而解耦上传文件与tomcat的关系文件服务器来进行文件的上传

首先新建一个图片上传的jsp界面

clzUpload.jsp

 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="${pageContext.request.contextPath}/sy/clz_upload.action" method="post" enctype="multipart/form-data">
11     <input type="hidden" value="${result.cid }" name="cid"><br>
12    <input type="hidden"  value="${result.cname }" name="cname"><br>
13  <input type="hidden"  value="${result.cteacher }" name="cteacher"><br>
14  <input type="file" name="file">
15      <input type="submit">
16 </form>
17 </body>
18 </html>

web层ClazzAction

//属性名要和name对应 xxx
private File file;
//xxxFileName
private String fileFileName;
//xxxContentType
private String fileContentType;

跳转上传图片的界面

  1 package com.crud.web;
  2 
  3 import java.io.BufferedInputStream;
  4 import java.io.BufferedOutputStream;
  5 import java.io.File;
  6 import java.io.FileInputStream;
  7 import java.io.FileOutputStream;
  8 import java.io.IOException;
  9 import java.util.List;
 10 
 11 import org.apache.commons.io.FileUtils;
 12 
 13 import com.crud.dao.Clazzdao;
 14 import com.crud.entity.Clazz;
 15 import com.crud.util.BaseAction;
 16 import com.crud.util.PageBean;
 17 import com.opensymphony.xwork2.ModelDriven;
 18 
 19 public class ClazzAction extends BaseAction implements ModelDriven<Clazz>{
 20 
 21     private Clazz clz = new Clazz();
 22     private Clazzdao clzdao = new Clazzdao();
 23 
 24     //属性名要和name对应  xxx
 25         private File file;
 26         //xxxFileName
 27         private String fileFileName;
 28         //xxxContentType
 29         private String fileContentType;
 30     
 31             /**
 32          * 跳转上传图片的界面
 33          * @return
 34          */
 35         public String preUpload() {
 36                     try {
 37                 this.result = this.clzdao.list(clz, null).get(0);
 38                 } catch (Exception e) {
 39                     // TODO Auto-generated catch block
 40                     e.printStackTrace();
 41                 }
 42                 
 43             return "preUpload";
 44         }
 45         
 46         public String upload() {
 47             String realDri = "E:/Project";
 48             String severDir = "/upload";
 49         try {
 50             //FileUtils.copyFile(file, new File(realDri + "/"+fileFileName));
 51             copyFile(file,new File(realDri+"/"+fileFileName));
 52             clz.setPic(severDir+"/"+fileFileName);
 53             this.clzdao.edit(clz);
 54         } catch (IOException e) {
 55             // TODO Auto-generated catch block
 56             e.printStackTrace();
 57         } catch (NoSuchFieldException e) {
 58             // TODO Auto-generated catch block
 59             e.printStackTrace();
 60         } catch (Exception e) {
 61             // TODO Auto-generated catch block
 62             e.printStackTrace();
 63         }
 64                 
 65     return "toList";
 66     }
 67         /**
 68          * 缓冲流
 69          * @param source
 70          * @param target
 71          * @throws IOException
 72          */
 73          public void copyFile(File source,File target) throws IOException {
 74                 BufferedInputStream in=new BufferedInputStream(new FileInputStream(file));
 75                 BufferedOutputStream out=new BufferedOutputStream(new FileOutputStream(target));
 76                 byte[] bbuf=new byte[1024];
 77                 int len=0;
 78                 while((len=in.read(bbuf))!=-1) {
 79                     out.write(bbuf,0,len);
 80                 }
 81                 in.close();
 82                 out.close();
 83             }
 84             
 85     public String list() {
 86         
 87         PageBean pageBean = new PageBean();
 88         pageBean.setRequest(request);
 89         try {
 90         List<Clazz>    list = this.clzdao.list(clz, pageBean);
 91         
 92         request.setAttribute("clzList", list);
 93         request.setAttribute("pageBean", pageBean);
 94         } catch (Exception e) {
 95             // TODO Auto-generated catch block
 96             e.printStackTrace();
 97         }
 98         return "list";
 99     }
100     
101     /**
102      * 跳转编辑页面
103      * @return
104      */
105     public String preSave() {
106         if(clz.getCid() != 0) {
107             try {
108             this.result = this.clzdao.list(clz, null).get(0);
109             } catch (Exception e) {
110                 // TODO Auto-generated catch block
111                 e.printStackTrace();
112             }
113         }
114             
115         return "preSave";
116     }
117     
118     public String add() {
119         System.out.println("add");
120         try {
121         this.code =    this.clzdao.add(clz);
122         } catch (Exception e) {
123             // TODO Auto-generated catch block
124             e.printStackTrace();
125         }
126         
127         return "toList";
128     }
129     
130     public String edit() {
131         try {
132             this.clzdao.edit(clz);
133         } catch (Exception e) {
134             // TODO Auto-generated catch block
135             e.printStackTrace();
136         }
137         return "toList";
138     }
139     
140     public String del() {
141         try {
142             this.clzdao.del(clz);
143         } catch (Exception e) {
144             // TODO Auto-generated catch block
145             e.printStackTrace();
146         }
147         return "toList";
148     }
149     
150     public File getFile() {
151         return file;
152     }
153 
154     public void setFile(File file) {
155         this.file = file;
156     }
157 
158     public String getFileFileName() {
159         return fileFileName;
160     }
161 
162     public void setFileFileName(String fileFileName) {
163         this.fileFileName = fileFileName;
164     }
165 
166     public String getFileContentType() {
167         return fileContentType;
168     }
169 
170     public void setFileContentType(String fileContentType) {
171         this.fileContentType = fileContentType;
172     }
173 
174     @Override
175     public Clazz getModel() {
176         // TODO Auto-generated method stub
177         return clz;
178     }
179 }

以及利用缓存流技术来进行拷贝也可以直接一行代码来进行

 1 public String upload() {
 2             String realDri = "E:/Project";
 3             String severDir = "/upload";
 4         try {
 5             FileUtils.copyFile(file, new File(realDri + "/"+fileFileName));
 6              7             clz.setPic(severDir+"/"+fileFileName);
 8             this.clzdao.edit(clz);
 9         } catch (IOException e) {
10             // TODO Auto-generated catch block
11             e.printStackTrace();
12         } catch (NoSuchFieldException e) {
13             // TODO Auto-generated catch block
14             e.printStackTrace();
15         } catch (Exception e) {
16             // TODO Auto-generated catch block
17             e.printStackTrace();
18         }

配置server的server.xml

修改显示数据的jsp界面

 1 <%@ page language="java" contentType="text/html; charset=UTF-8"
 2     pageEncoding="UTF-8"%>
 3     <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
 4     <%@ taglib uri="/zking" prefix="z" %>
 5 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 6 <html>
 7 <head>
 8 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
 9 <title>Insert title here</title>
10 </head>
11 <body>
12 <h2>小说目录</h2>
13     <br>
14     <form action="${pageContext.request.contextPath}/sy/clz_list.action"
15         method="post">
16         书名：<input type="text" name="bname"> <input type="submit"
17             value="确定">
18             <input type="hidden" name="bname">
19     </form>
20     <a href="${pageContext.request.contextPath}/sy/clz_preSave.action">增加</a>
21     <table border="1" width="100%">
22         <tr>
23             <td>编号</td>
24             <td>名称</td>
25             <td>教员</td>
26             <td>图片</td>
27             <del>操作</del>
28         </tr>
29         <c:forEach items="${clzList }" var="b">
30             <tr>
31                 <td>${b.cid }</td>
32                 <td>${b.cname }</td>
33                 <td>${b.cteacher }</td>
34                 <td>
35                 <img style="height: 50px;  55px"  src="${pageContext.request.contextPath}${b.pic }">
36                 </td>
37                 <td>
38                     <a href="${pageContext.request.contextPath}/sy/clz_preSave.action?cid=${b.cid}">修改</a>&nbsp;&nbsp;&nbsp;
39                                 <a href="${pageContext.request.contextPath}/sy/clz_del.action?cid=${b.cid}">删除</a>&nbsp;&nbsp;&nbsp;
40                                  <a href="${pageContext.request.contextPath}/sy/clz_preUpload.action?cid=${b.cid}">文件上传</a>&nbsp;&nbsp;&nbsp; 
41 
42                 
43                 </td>
44             </tr>
45         </c:forEach>
46     </table>
47 
48     <z:page pageBean="${pageBean }"></z:page>
49 
50 
51 
52 
53 
54 </body>
55 </html>

效果

查看全文

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原文地址：https://www.cnblogs.com/xcn123/p/11272929.html