Spring Boot—04 File Upload

package com.smartmap.sample.ch1.controller.view;

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

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.env.Environment;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.multipart.MultipartFile;

import com.smartmap.sample.ch1.service.UserService;

@Controller
@RequestMapping("/system/page/user")
public class UserViewController {
    @Autowired
    UserService userService;

    @Autowired
    private Environment environment;

    @GetMapping("/list.html")
    public String userList(Model model) {
        String osName = System.getProperty("os.name");
        model.addAttribute("name", "hello world");
        model.addAttribute("host", osName);
        return "user/list";
    }

    @GetMapping("/userdetail.html")
    public String userdetail(String id) {
        return "admin/userInfo.jsp";
    }

    /**
     * File Upload
     *
     * curl -XPOST 'http://127.0.0.1:8080/system/page/user/upload.html' -F
     * "multipartFile=@/D/Project/JavaWeb/SpringBoot/01HelloSpringBoot/readme.txt"
     * -F "name=123456789"
     *
     * curl -XPOST 'http://127.0.0.1:8080/system/page/user/upload.html' -F
     * "[email protected];type=application/octet-stream" -F "name=123456789"
     *
     * @param name
     * @param multipartFile
     * @return
     * @throws IllegalStateException
     * @throws IOException
     */
    @PostMapping("/upload.html")
    @ResponseBody
    public String handleFormUpload(String name, MultipartFile multipartFile) throws IllegalStateException, IOException {
        String resultMessage = "{success: false, message: 'upload fail'}";
        System.out.println(multipartFile);
        if (!multipartFile.isEmpty()) {
            String fileName = multipartFile.getOriginalFilename();
            // InputStream is = multipartFile.getInputStream();
            String fileSavePath = environment.getProperty("file.upload.path", "");
            if (!fileSavePath.equals("")) {
                File file = new File(fileSavePath + java.io.File.separator + fileName);
                if (file.exists()) {
                    file.delete();
                }
                multipartFile.transferTo(file);
                resultMessage = "{success: true, message: 'upload success'}";
            }
        }
        return resultMessage;
    }

}

application.properties

file.upload.path=D:/Project/JavaWeb/SpringBoot/01HelloSpringBoot/fileUpLoad

spring.servlet.multipart.enabled=true
spring.servlet.multipart.file-size-threshold=0
spring.servlet.multipart.location=D:/Project/JavaWeb/SpringBoot/01HelloSpringBoot/temp
spring.servlet.multipart.max-file-size=10MB
spring.servlet.multipart.max-request-size=10MB
spring.servlet.multipart.resolve-lazily=false