struts2 上传文件

package cn.temp.upload;

import java.io.File;

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

import com.opensymphony.xwork2.ActionSupport;

public class Up01Action extends ActionSupport {
    // 1:声明File类型的属性,使用List<File>
    private File[] img;
    // 用于保存上传的文件的名称的
    private String[] imgFileName;
    //用于保存上传文件的类型
    private String[] imgContentType;
    //用于保存上传文件的大小
    private Long[] size;

    public File[] getImg() {
        return img;
    }

    public void setImg(File[] img) {
        this.img = img;
    }

    public String[] getImgFileName() {
        return imgFileName;
    }

    public void setImgFileName(String[] imgFileName) {
        this.imgFileName = imgFileName;
    }

    public String[] getImgContentType() {
        return imgContentType;
    }

    public void setImgContentType(String[] imgContentType) {
        this.imgContentType = imgContentType;
    }

    public Long[] getSize() {
        return size;
    }

    public void setSize(Long[] size) {
        this.size = size;
    }

    @Override
    public String execute() throws Exception {
        size = new Long[img.length];
        for (int i = 0; i < size.length; i++) {
            size[i] = img[i].length();
        }
        String path = ServletActionContext.getServletContext().getRealPath("/files");
        // 获取真实的保存的目录
        for (int i = 0; i < img.length; i++) {
            FileUtils.copyFile(img[i], new File(path, imgFileName[i]));
        }
        return SUCCESS;
    }
}

上传文件的前台页面

<form action="up02" method="post" enctype="multipart/form-data">
		File:<input type="file" name="file"><br> 说明：<input
			type="text" name="desc"><br> <input type="submit">
	</form>

前台显示上传文件的信息页面

    <p>文件上传成功</p>
    文件名：${imgFileName}<br>
    文件类型：${imgContentType}<br>
    文件大小：${size}<br>

struts2 的 配置文件

<package name="example-upload" extends="struts-default">
        <action name="up01" class="cn.temp.upload.Up01Action">
            <result>/WEB-INF/temp/one.jsp</result>
        </action>
    </package>