struts2上传文件(commons-fileupload-1.2.1)-优快云博客

本文链接：https://blog.youkuaiyun.com/iteye_20179/article/details/81922001

struts版本为struts-2.1.8.1

项目名为 struts2

从路径 struts-2.1.8.1\lib 下将 struts2-core-2.1.8.1.jar，xwork-core-2.1.6.jar，commons-fileupload-1.2.1.jar，commons-io-1.3.2.jar 复制到 WEB-INF/lib 目录下

配置struts.xml文件

<?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.action.extension" value="do,action"></constant>
	<!-- 设置文件上传大小限制10M -->
	<constant name="struts.multipart.maxSize" value="10701096"></constant>
	<package name="fileupload" namespace="/fileupload" extends="struts-default">
		<action name="upload" class="com.cool.fileupload.FileUploadAction" method="execute">
			<result name="success">/WEB-INF/page/message.jsp</result>
		</action>
	</package>
</struts>

创建第一个页面 fileupload.jsp (用于上传文件)

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>Fileupload Page</title>
	<meta http-equiv="pragma" content="no-cache">
	<meta http-equiv="cache-control" content="no-cache">
	<meta http-equiv="expires" content="0">    
  </head>
  <body>
    <form action="${pageContext.request.contextPath}/fileupload/upload.action" enctype="multipart/form-data" method="post">
    	文件：<input type="file" name="image" />
    	<input  type="submit" value="上传"/>
    </form>
  </body>
</html>

创建第二个页面 /page/message.jsp (用于显示返回信息)

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>Message Page</title>
	<meta http-equiv="pragma" content="no-cache">
	<meta http-equiv="cache-control" content="no-cache">
	<meta http-equiv="expires" content="0">    
  </head>
  <body>
    ${message }
  </body>
</html>

创建处理文件上传的Action

package com.cool.fileupload;

import java.io.File;
import org.apache.commons.io.FileUtils;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionContext;

public class FileUploadAction {
	private File image;
	
	private String imageFileName;

	public File getImage() {
		return image;
	}

	public void setImage(File image) {
		this.image = image;
	}

	public String getImageFileName() {
		return imageFileName;
	}

	public void setImageFileName(String imageFileName) {
		this.imageFileName = imageFileName;
	}
	
	public String execute() throws Exception{
		String realPath = ServletActionContext.getServletContext().getRealPath("/image");
		if(this.image!=null){
			File saveFile = new File(new File(realPath), this.imageFileName);
			if(!saveFile.getParentFile().exists())	saveFile.getParentFile().mkdirs();
			FileUtils.copyFile(image, saveFile);
		}
		ActionContext.getContext().put("message","上传成功");
		return "success";
	}
}

访问路径为 http://localhost:8080/struts2/fileupload.jsp (struts2为项目名)

选择文件，然后单击上传按钮，画面跳转到 /page/message.jsp，显示【上传成功】

然后到发布路径下看文件是否真正上传 F:\Tomcat\webapps\struts2\image ( F:\Tomcat 为本机Tomcat路径 )

测试成功。

关于多文件上传如下,只需将image和imageFileName定义成数组型即可

private File[] image;	

private String[] imageFileName;    


以上