struts2 多文件上传

最新推荐文章于 2021-05-31 23:17:54 发布

原创最新推荐文章于 2021-05-31 23:17:54 发布 · 89 阅读

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本文介绍了一个使用Struts2框架实现的多文件上传功能示例。通过一个简单的HTML表单，用户可以同时选择多个文件进行上传。该示例展示了如何在后台接收并处理这些文件，包括获取文件名、类型及大小等信息，并将它们保存到服务器指定目录。

upload.jsp

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UploadAction.java

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package org.taink.struts.action;

import java.io.File;
import java.io.IOException;

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

import com.opensymphony.xwork2.ActionContext;

public class UploadAction{
    private File[] upload;
    private String[] uploadContentType;
    private String[] uploadFileName;

    public void setUpload(File[] upload) {
        this.upload = upload;
    }

    public void setUploadContentType(String[] uploadContentType) {
        this.uploadContentType = uploadContentType;
    }

    public void setUploadFileName(String[] uploadFileName) {
        this.uploadFileName = uploadFileName;
    }

    public String execute() throws IOException {

        // 根据文件夹名称,获得服务器的真实路径
        String realPath = ServletActionContext.getServletContext().getRealPath(
                "upload");
        // 根据文件夹路径构造出一个文件对象
        File saveFile = new File(realPath);
        // 如果文件路径不存在就创建文件夹
        if (!saveFile.exists()) {
            saveFile.mkdirs();
        }
        if (null != upload) {
            for (int i = 0; i < upload.length; i++) {
                System.out.println("文件临时位置: " + upload[i]);
                System.out.println("文件名称: " + uploadFileName[i]);
                System.out.println("文件类型: " + uploadContentType[i]);
                System.out.println("文件大小: " + upload[i].length());
                // 将临时文件夹中的文件复制到指定的文件夹中
                FileUtils.copyFile(upload[i], new File(saveFile, uploadFileName[i]));
            }
            ActionContext.getContext().put("message", "上传文件成功");
        }
        return "success";
    }

}