struts2文件上传

最新推荐文章于 2021-05-31 23:17:54 发布

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最新推荐文章于 2021-05-31 23:17:54 发布

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分类专栏： JAVAWEB

本文链接：https://blog.youkuaiyun.com/zxdfc/article/details/44241481

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一、单文件上传：

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@taglib prefix="s" uri="/struts-tags" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    
    <title>fileupload</title>
    
	<meta http-equiv="pragma" content="no-cache">
	<meta http-equiv="cache-control" content="no-cache">
	<meta http-equiv="expires" content="0">    
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
	<meta http-equiv="description" content="This is my page">
	<!--
	<link rel="stylesheet" type="text/css" href="styles.css">
	-->

  </head>
  
  <body>
     <s:debug></s:debug>
      <h4>File Up Load</h4>
      
      <s:form action="upload" enctype="multipart/form-data" theme="simple" method="post">
      
       File: <s:file name="ppt"></s:file><br>
       FileDesc<s:textfield name="pptDesc"></s:textfield><br>
     
       <s:submit></s:submit>
      </s:form>
      
      
  </body>
</html>

struts.xml文件

  <action name="upload" class="com.upload.action.FileUpLoadAction" >
           <result>/success.jsp</result>
           <result name="input">/fileupload.jsp</result>
         </action>

FileUpLoadAction.java文件：

package com.upload.action;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.List;

import javax.servlet.ServletContext;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;

public class FileUpLoadAction extends ActionSupport {

	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;

	private File ppt;
	private String pptContentType;
	private String pptFileName;
	
	private String pptDesc;
	
	
	

	public File getPpt() {
		return ppt;
	}

	public void setPpt(File ppt) {
		this.ppt = ppt;
	}

	public String getPptContentType() {
		return pptContentType;
	}

	public void setPptContentType(String pptContentType) {
		this.pptContentType = pptContentType;
	}

	public String getPptFileName() {
		return pptFileName;
	}


	public void setPptFileName(String pptFileName) {
		this.pptFileName = pptFileName;
	}

	public String getPptDesc() {
		return pptDesc;
	}

	public void setPptDesc(String pptDesc) {
		this.pptDesc = pptDesc;
	}

	@Override
	public String execute() throws Exception {
		
		System.out.println(ppt);
		System.out.println(pptContentType);
		System.out.println(pptFileName);
		System.out.println(pptDesc);
		
		ServletContext servletContext = ServletActionContext.getServletContext();
		String dir = servletContext.getRealPath("/files/" + pptFileName);
		System.out.println(dir);
		
		FileOutputStream out = new FileOutputStream(dir);
		FileInputStream in = new FileInputStream(ppt);
		
		byte [] buffer = new byte[1024];
		int len = 0;
		
		while((len = in.read(buffer)) != -1){
			out.write(buffer, 0, len);
		}
		
		out.close();
		in.close();
		
		return "success";
	}
}

多文件上传：

只要将jsp页面修改，和Action

例如：

Action代码：

package cn.csdn.hr.up.action;
import java.io.File;
import java.io.IOException;
import java.util.List;
import org.apache.commons.io.FileUtils;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionSupport;
public class TagUploadListAction extends ActionSupport {
    private static final long serialVersionUID = 1L;
    private String name;

    // 上传多个文件的集合文本

    private List<File> upload;
    // /多个上传文件的类型集合
    private List<String> uploadContentType;
   // 多个上传文件的文件名集合
    private List<String> uploadFileName;

    public String getName() {
            return name;
     }

    public void setName(String name) {

       this.name = name;
    }

    public List<File> getUpload() {

       return upload;
    }

    public void setUpload(List<File> upload) {

       this.upload = upload;
    }

    public List<String> getUploadContentType() {

       return uploadContentType;
    }

    public void setUploadContentType(List<String> uploadContentType) {

       this.uploadContentType = uploadContentType;
    }

    public List<String> getUploadFileName() {

       return uploadFileName;
    }

    public void setUploadFileName(List<String> uploadFileName) {

       this.uploadFileName = uploadFileName;
    }

    public String execute() {

       // 把上传的文件放到指定的路径下

       String path = ServletActionContext.getServletContext().getRealPath(

              "/WEB-INF/uploadList");

       // 写到指定的路径中

       File file = new File(path);

       // 如果指定的路径没有就创建

       if (!file.exists()) {

           file.mkdirs();
       }

       // 把得到的文件的集合通过循环的方式读取并放在指定的路径下

       for (int i = 0; i < upload.size(); i++) {
           try {

              //list集合通过get(i)的方式来获取索引

              FileUtils.copyFile(upload.get(i), new File(file, uploadFileName.get(i)));

           } catch (IOException e) {

              // TODO Auto-generated catch block

              e.printStackTrace();
           }
       }

       return SUCCESS;
    }
}