6.struts2.5-文件上传操作

首先是 file.html

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<body>
    <form action="FileUploadAction" method="post" enctype="multipart/form-data">
    选择文件<input type="file" name="file" /></br>
    <input type="submit" value="上传文件" /></br>
    </form>
</body>
</body>
</html>

这里面将指向了FileUploadAction

FileUploadAction.java

package com.caizhen.file;

import java.io.File;

import java.io.IOException;

import org.apache.commons.io.FileUtils;
import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;

public class FileUploadAction extends ActionSupport {

	public File getFile() {
		return file;
	}

	public void setFile(File file) {
		this.file = file;
	}

	public String getFileFileName() {
		return fileFileName;
	}

	public void setFileFileName(String fileFileName) {
		this.fileFileName = fileFileName;
	}

	public String getFileContentType() {
		return fileContentType;
	}

	public void setFileContentType(String fileContentType) {
		this.fileContentType = fileContentType;
	}

	private File file;
	private String fileFileName;
	private String fileContentType;

	public String execute() throws Exception {
		// 获取要保存文件夹的物理路径(绝对路径)
		String uploadPath = ServletActionContext.getServletContext().getRealPath("/upload");

		File file1 = new File(uploadPath);
//测试此抽象路径名表示的文件或目录是否存在。若不存在，创建此抽象路径名指定的目录，包括所有必需但不存在的父目录。
		if (!file1.exists())
			file.mkdirs();

		try {

			FileUtils.copyFile(file, new File(file1, fileFileName));

		} catch (IOException e) {
			e.printStackTrace();
		}
		return SUCCESS;
	}

}

file是上传的文件

fileName是上传文件的文件名

fileCoontenType是上传文件的类型

获取需要保存文件的物理地址uploadPath

String uploadPath = ServletActionContext.getServletContext().getRealPath("/upload");

File file1 = new File(uploadPath);
//通过将给定路径名字符串转换成抽象路径名来创建一个新 File 实例。

public boolean exists() //判断此抽象路径名表示的文件或文件夹是否存在

 copyFile简介
 @param srcFilePath 源文件路径 
 @param destFilePath 目标文件路径
方法一:传入源文件路径和目标文件路径
public static boolean copyFile(String srcFilePath, String destFilePath) {
  return copyFile(getFileByPath(srcFilePath), getFileByPath(destFilePath)); 
} 

@param srcFile 源文件 
@param destFile 目标文件
方法二:传入原文件和目标文件
 public static boolean copyFile(File srcFile, File destFile) {
          return copyOrMoveFile(srcFile, destFile, false);
 }

new File(file1, fileFileName)

通过给定的父抽象路径名和子路径名字符串创建一个新的File实例

File(File parent, String child);

struts.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
        "-//Apache Software Foundation//DTD Struts Configuration 2.5//EN"
        "http://struts.apache.org/dtds/struts-2.5.dtd">
<struts>
	<package name="Mypackage" namespace="/" extends="struts-default">
		<action name="FileUploadAction" class="com.caizhen.file.FileUploadAction">
			<result name="success">result.jsp</result>
			<result name="input"></result>
			<interceptor-ref name="defaultStack">
			<param name="fileUpload.maxmumSize">4194340</param>
			<param name="fileUpload.allowedExtensions">.txt,.doc.jpg,.zip</param>
			<param name="fileUpload.allowedTypes">text/plain,application/msword,image/jpeg</param>
			</interceptor-ref>
		</action>
	</package>
</struts>

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6.struts2.5-文件上传操作

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