《struts2权威指南》学习笔记之struts2多文件上传--使用数组方式

上传页面：

 

<% ... @ page language="java" contentType="text/html; charset=GBK" %>
<% ... @taglib prefix="s" uri="/struts-tags" %>
<% ... @ page isELIgnored="false"  %>
<% ... @ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"  %>


< head >

< meta  http-equiv ="Content-Type"  content ="text/html; charset=GBK"   />
< title ></ title >
</ head >
< body >
< s:fielderror />
< form  action ="upload.action"  method ="post"  enctype ="multipart/form-data" >
       < input  type ="text"  name ="title"   />< br >
       < input  type ="file"  name ="upload"   />< br >
       < input  type ="file"  name ="upload"   />< br >
       < input  type ="file"  name ="upload"   />< br >
     < input  value ="upload"  type ="submit"   />
</ form >
</ body >
</ html >

 上传Action

 

package  lee;

import  com.opensymphony.xwork2.Action;
import  com.opensymphony.xwork2.ActionContext;

import  org.apache.struts2.ServletActionContext;
import  java.io. * ;

import  com.opensymphony.xwork2.ActionSupport;

/** */ /**
 * @author  yeeku.H.lee kongyeeku@163.com
 * @version  1.0
 * <br>Copyright (C), 2005-2008, yeeku.H.Lee
 * <br>This program is protected by copyright laws.
 * <br>Program Name:
 * <br>Date: 
 */

public   class  UploadAction  extends  ActionSupport
... {
    private String title;
    private File[] upload;
    private String[] uploadContentType;
    private String[] uploadFileName;


    //接受依赖注入的属性
    private String savePath;
    //接受依赖注入的方法
    public void setSavePath(String value)
    ...{
        this.savePath = value;
    }

    private String getSavePath() throws Exception 
    ...{
        return ServletActionContext.getRequest().getRealPath(savePath);
    }
    
    public void setTitle(String title) ...{
        this.title = title; 
    }

    
    public File[] getUpload() ...{
        return upload;
    }

    public void setUpload(File[] upload) ...{
        this.upload = upload;
    }

    public String[] getUploadContentType() ...{
        return uploadContentType;
    }

    public void setUploadContentType(String[] uploadContentType) ...{
        this.uploadContentType = uploadContentType;
    }

    public String[] getUploadFileName() ...{
        return uploadFileName;
    }

    public void setUploadFileName(String[] uploadFileName) ...{
        this.uploadFileName = uploadFileName;
    }

    public String getTitle() ...{
        return title;
    }

    @Override
    public String execute() throws Exception
    ...{
        System.out.println("开始上传单个文件-----------------------");
        System.out.println(getSavePath());
        System.out.println("==========" + getUploadFileName());
        System.out.println("==========" + getUploadContentType());
        System.out.println("==========" + getUpload());
        
        File[] files=this.getUpload();
        for(int i=0;i<files.length;i++)...{
            //以服务器的文件保存地址和原文件名建立上传文件输出流
            FileOutputStream fos = new FileOutputStream(getSavePath() + "/" + getUploadFileName()[i]);
            FileInputStream fis = new FileInputStream(files[i]);
            byte[] buffer = new byte[1024];
            int len = 0;
            while ((len = fis.read(buffer)) > 0)
            ...{
                fos.write(buffer , 0 , len);
            }
        }
        return SUCCESS;
    }
    



}

 

struts.xml

 

<? 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 >

     < constant  name ="struts.custom.i18n.resources"  value ="globalMessages" />
     < constant  name ="struts.i18n.encoding"  value ="GBK" />

     < package  name ="lee"  extends ="struts-default" >
    
         < action  name ="upload"  class ="lee.UploadAction" >
           < interceptor-ref  name ="fileUpload" >  
                 < param  name ="allowedTypes" > image/bmp,image/png,image/gif,image/jpeg,image/jpg </ param >  
                 < param  name ="maximumSize" > 2000 </ param >  
             </ interceptor-ref >  
             < interceptor-ref  name ="defaultStack" />  
             < param  name ="savePath" > /upload </ param >
             < result > /succ.jsp </ result >     
             < result  name ="input" > /upload.jsp </ result >     
         </ action >         
     </ package >
</ struts >     

 

结果显示页面：

 

<% ... @ page language="java" contentType="text/html; charset=GBK" %>
<% ... @taglib prefix="s" uri="/struts-tags" %>
< html >
     < head >
         < title > 上传成功 </ title >
     </ head >
     < body >
        上传成功! < br >
        文件标题: < s:property  value =" + title" />< br >
        文件为： < img  src ="<s:property value=" 'upload/' + uploadFileName[0]" /> "/> < br >
        文件为： < img  src ="<s:property value=" 'upload/' + uploadFileName[1]" /> "/> < br >
        文件为： < img  src ="<s:property value=" 'upload/' + uploadFileName[2]" /> "/> < br >
     </ body >
</ html >