2020.06.06 SpringMVC中传统文件上传方式

package com.aojie.controller;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileUploadException;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

import javax.servlet.http.HttpServletRequest;
import java.io.File;
import java.util.List;
import java.util.UUID;

/**
 * @author aojie
 * @Function
 * @create 2020-06-06 22:43
 */
@Controller
@RequestMapping("/user")
public class UserController {
    @RequestMapping("/fileupload")
    public String fileupload1(HttpServletRequest request) throws Exception {
        System.out.println("文件上传！");
        //使用fileupload组件完成文件上传
        //指定上传位置
        String path = request.getSession().getServletContext().getRealPath("/uploads");
        //判断该路径是否存在
        File file = new File(path);
        if (!file.exists()){
            file.mkdir();
        }
        System.out.println(path);
        //解析request对象，获取上传文件
        DiskFileItemFactory factory=new DiskFileItemFactory();
        ServletFileUpload upload=new ServletFileUpload(factory);
        //解析request
        List<FileItem> list = upload.parseRequest(request);
        //遍历
        for (FileItem fileItem : list) {
            //判断当前item对象是否是上传文件项
            if (fileItem.isFormField()) {
                //是普通表单项

            }else {
                //是上传文件项
                String name = fileItem.getName();
                //把文件名称设置成唯一值
                String uuid = UUID.randomUUID().toString().replace("-", "");
                name=uuid+"_"+name;
                //完成文件上传
                fileItem.write(new File(path,name));
                //删除临时文件
                fileItem.delete();
            }

        }
        return "success";
    }

}

2020.06.06 SpringMVC中传统文件上传方式

原文：https://www.cnblogs.com/aojie/p/13057624.html