刘圣杰

 

文件上传

今天学习到Struts2的文件上传部分，由于风中叶的视频声音和画面对不起来，于是自己写了一个。代码贡献出来，算是自己初步接触Struts2文件上传的纪念吧。

1、建立web项目，名字为FileUpload

2、导入Struts2的jar包

项目图如下：

 

upload.jsp的代码为

 1 <%@ page language="java" pageEncoding="UTF-8"%>
 2 <%@ taglib prefix="s" uri="/struts-tags"%>
 3 <%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>
 4 <%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>
 5 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
 6 <html>
 7     <head>
 8 
 9         <meta http-equiv="Content-Type" content="text/html; charset=gb2312">
10 
11         <title>上传文件</title>
12 
13     </head>
14 
15     <body>
16 
17     <!-- 上传文件表单定义 -->
18 
19     <s:form action="upload" method="post" enctype="multipart/form-data">
20     
21       
22         
23         
24      <tr>
25 
26         <td>username:</td>
27         
28         <td><s:textfield name="username"></s:textfield></td>
29         
30     </tr>
31         <tr>
32 
33         <td>password:</td>
34         
35         <td><s:password name="password"></s:password></td>
36         
37     </tr>
38 
39     <tr>
40 
41     <!-- 上传文件标签定义 -->
42 
43     <td>上传文件:<s:file name="file"></s:file></td>
44 
45     </tr>
46 
47     <tr>
48 
49     <td align="left"><s:submit name="submit" value="提交"></s:submit></td>
50 
51     </tr>
52 
53     </s:form>
54 
55     </body>
56 
57 </html>

因为看了风老师的视频，想与之对应下面的学习，所以添加了username和password。

result.jsp的代码如下

<%@ page language="java" pageEncoding="UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>
<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>

<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=gb2312">
        <title>上传结果</title>
    </head>
    <body>
        
        userName:${requestScope.username }<br>
        password:${requestScope.password }<br>
        上传文件：<s:property value="fileFileName" />
    </body>
</html>

UploadAction.java代码如下：

package org.lsj;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.List;

import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionSupport;

public class UploadAction extends ActionSupport {
    private final static String UPLOADDIR = "/upload";
    
    private String username;
    
    private String password;
    
    
    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    private List<File> file;
    private List<String> fileFileName;
    private List<String> fileContentType;

    public List<File> getFile() {
        return file;
    }

    public void setFile(List<File> file) {
        this.file = file;
    }

    public List<String> getFileFileName() {
        return fileFileName;
    }

    public void setFileFileName(List<String> fileFileName) {
        this.fileFileName = fileFileName;
    }

    public List<String> getFileContentType() {
        return fileContentType;
    }

    public void setFileContentType(List<String> fileContentType) {
        this.fileContentType = fileContentType;
    }

    public String execute() throws Exception {
        for (int i = 0; i < file.size(); i++) {
            uploadFile(i);
        }
        return SUCCESS;
    }

    //上传
    private void uploadFile(int i) throws FileNotFoundException, IOException {
        try {
            InputStream in = new FileInputStream(file.get(i));
            String dir = ServletActionContext.getRequest().getRealPath(UPLOADDIR);
            File uploadFile = new File(dir, this.getFileFileName().get(i));
            OutputStream out = new FileOutputStream(uploadFile);
            byte[] buffer = new byte[1024 * 1024];
            int length;
            while ((length = in.read(buffer)) > 0) {
                out.write(buffer, 0, length);
            }

            in.close();
            out.close();
        } catch (FileNotFoundException ex) {
            ex.printStackTrace();
        } catch (IOException ex) {
            ex.printStackTrace();
        }
    }
}


web.xml代码如下：

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 
    xmlns="http://java.sun.com/xml/ns/javaee" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
    http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
  <display-name></display-name>    
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>


<filter>
<filter-name>Struts</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>Struts</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>



  
  
</web-app>

 

最后是Struts.xml代码：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
    
    <package name="C04.4" extends="struts-default">
        <action name="upload" class="org.lsj.UploadAction">
            <result name="input">/upload.jsp</result>
            <result name="success">/result.jsp</result>
        </action>
    </package>
</struts>

 

然后运行成功！

posted on 2012-04-30 21:55  刘圣杰  阅读(1254)  评论(6)  编辑  收藏  举报

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