struts2实现多文件上传-优快云博客

本文链接：https://blog.youkuaiyun.com/iteye_17677/article/details/82644986

1.jsp页面设计uploadfileup.jsp

<%@ page language="java" contentType="text/html; charset=GB18030"
    pageEncoding="GB18030"%>
    
<%@ taglib prefix="s" uri="/struts-tags" %>
    
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=GB18030">
<title>Insert title here</title>

<script type="text/javascript">

function addMore()
{
	var td = document.getElementById("more");
	
	var br = document.createElement("br");
	var input = document.createElement("input");
	var button = document.createElement("input");
	
	input.type = "file";
	input.name = "file";
	
	button.type = "button";
	button.value = "Remove";
	
	button.onclick = function()
	{
		td.removeChild(br);
		td.removeChild(input);
		td.removeChild(button);
	}
	
	td.appendChild(br);
	td.appendChild(input);
	td.appendChild(button);
	
}

</script>

</head>

<body>

	<table align="center" width="50%">
			<tr>
				<td>

					<s:fielderror cssStyle="color:red" />

				</td>
			</tr>
		</table>


		<s:form action="upload" theme="simple" enctype="multipart/form-data">

			<table align="center" width="50%" border="1">
				<tr>
					<td>
						username
					</td>
					<td>
						<s:textfield name="username"></s:textfield>
					</td>
				</tr>

				<tr>
					<td>
						password
					</td>
					<td>
						<s:password name="password"></s:password>
					</td>
				</tr>


				<tr>
					<td>
						file
					</td>

					<td id="more">
						<s:file name="file"></s:file><input type="button" value="Add More.." οnclick="addMore()">
					</td>
				</tr>
				
				<tr>
					<td>
						<s:submit value=" submit "></s:submit>
					</td>

					<td>
						<s:reset value=" reset "></s:reset>
					</td>
				</tr>
			</table>

		</s:form>

</body>

</html>

2.实现文件上传的Action类

package com.cjg.action;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
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 String username;

	private String password;

	private List<File> file;

	private List<String> fileFileName;

	private List<String> fileContentType;

	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;
	}

	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;
	}

	@Override
	public String execute() throws Exception
	{
		for (int i = 0; i < file.size(); ++i)
		{
			InputStream is = new FileInputStream(file.get(i));

			String root = ServletActionContext.getRequest().getRealPath(
					"/upload");

			File destFile = new File(root, this.getFileFileName().get(i));

			OutputStream os = new FileOutputStream(destFile);

			byte[] buffer = new byte[400];

			int length = 0;

			while ((length = is.read(buffer)) > 0)
			{
				os.write(buffer, 0, length);
			}

			is.close();

			os.close();
		}

		return SUCCESS;

	}

}

3.Struts.xml的配置

	<constant name="struts.multipart.saveDir" value="c:\"></constant>



	<package name="struts2" extends="jfreechart-default">
		<action name="upload" class="com.cjg.action.UploadAction">
			<result name="success">/uploadResult.jsp</result>
			<result name="input">/uploadfileup.jsp</result>
			<interceptor-ref name="fileUpload">
				<param name="maximumSize">409600</param>
				<param name="allowedTypes">
					application/vnd.ms-powerpoint
				</param>
			</interceptor-ref>
			<interceptor-ref name="defaultStack"></interceptor-ref>
		</action>
</package>