struts2 单个文件上传

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 · 119 阅读

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本文介绍了一个使用Struts2框架实现文件上传的具体案例。通过展示upload.jsp页面代码及UploadAction.java后端处理逻辑，详细说明了如何设置文件上传字段、获取文件信息并将其保存至服务器指定目录的过程。

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 {

        System.out.println("文件临时位置: " + upload);
        System.out.println("文件名称: " + uploadFileName);
        System.out.println("文件类型: " + uploadContentType);
        System.out.println("文件大小: " + upload.length());

        // 根据文件夹名称,获得服务器的真实路径
        String realPath = ServletActionContext.getServletContext().getRealPath(
                "images");
        // 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) {
            // 将临时文件夹中的文件复制到指定的文件夹中
            FileUtils.copyFile(upload, new File(saveFile, uploadFileName));
            ActionContext.getContext().put("message", "上传文件成功");
        }
        return "success";
    }

}