struts 2 文件下传 _Web前端

struts 2 文件上传
1、jsp页面

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib uri="/struts-tags" prefix="s"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
	<head>

		<title>struts 2 File Upload Test</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:form action="fileUpload" method="POST"
			enctype="multipart/form-data">
			<s:file name="myFile" label="文件上传"/><br/>
			<s:textfield name="inputText" label="输入文本"/><br/>
			<s:submit value="提交" />
		</s:form>

	</body>
</html>

2、Action类

package com.jxlg.demo;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Date;

import com.opensymphony.xwork2.ActionSupport;

public class FileUploadAction extends ActionSupport {

	private static final int BUFFER_SIZE = 16 * 1024;
	private String savePath; // 保存路径
	private File myFile; // 待上传文件
	private String myFileFileName; // 文件名

	public String getMyFileFileName() {
		return myFileFileName;
	}

	public void setMyFileFileName(String myFileFileName) {
		this.myFileFileName = myFileFileName;
	}

	private String inputText;

	public String getSavePath() {
		return savePath;
	}

	public void setSavePath(String savePath) {
		this.savePath = savePath;
	}

	public File getMyFile() {
		return myFile;
	}

	public void setMyFile(File myFile) {
		this.myFile = myFile;
	}

	public void setInputText(String inputText) {
		this.inputText = inputText;
	}

	public String getInputText() {
		return inputText;
	}

	private void copyFile(File src, File savePath) {
		try {
			// 原文件
			FileInputStream fis = new FileInputStream(src);
			BufferedInputStream bis = new BufferedInputStream(fis);

			// 文件输出保存
			FileOutputStream fos = new FileOutputStream(savePath);
			BufferedOutputStream bos = new BufferedOutputStream(fos);

			byte buffer[] = new byte[BUFFER_SIZE];
			while (fis.read(buffer) > 0) {
				bos.write(buffer);
			}
			System.out.println("成功上传文件(临时文件)" + src.getName());
			System.out.println("文件存放在:" + savePath.getAbsolutePath());
			bos.close();
			fos.close();
			bis.close();
			fis.close();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

	@Override
	public String execute() throws Exception {

		// TODO Auto-generated method stub

		System.out.println("文本输入框输入的文字是:" + getInputText());
		File src = getMyFile();
		Date date = new Date();

		System.out.println("=========filename:" + getMyFileFileName()
				+ "=======contentType:" + getExtendsion());

		//可以设置savePath的值，可以设置服务器的路径
		File saveFilePath = new File(savePath + date.getTime()
				+ getExtendsion());
		System.out.println(saveFilePath.getAbsolutePath());
		copyFile(src, saveFilePath);
		return super.execute();
	}

	public String getExtendsion() {
		int pos = getMyFileFileName().indexOf(".");
		return getMyFileFileName().substring(pos);
	}
}

3、配置

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
	<constant name="struts.devMode" value="true"></constant>
	<package name="mypackage" extends="struts-default">
		<action name="fileUpload" class="com.jxlg.demo.FileUploadAction">
			<interceptor-ref name="fileUpload">
				<param name="allowedType">image/bmp,image/png,image/gif,image/jpeg</param>
			</interceptor-ref>
			<interceptor-ref name="defaultStack"></interceptor-ref>
			<param name="savePath">d:\\helloworld\\</param>
			<result name="success">/success_upload.jsp</result>
			<result name="input">/index.jsp</result>
		</action>
	</package>
</struts>

5、附加的success_upload.jsp