SpringBoot2 上传文件上传多文件

项目结构：

1、单文件上传

upload.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>upload file</title>
</head>
<body>
    <form action="/uploadfile/upload" method="post" enctype="multipart/form-data">
        <input type="file" name="file">
        <input type="submit" value="上传">
    </form>
</body>
</html>

http://localhost:8080/uploadfile/upload

package com.archibladwitwicke.springboot2.chapter03.controller;

import org.springframework.stereotype.Controller;
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 java.io.File;

@Controller
@RequestMapping("/uploadfile")
public class UploadFileController {

    @RequestMapping("/upload")
    public String upload() {
        return "/upload.html";
    }

    @PostMapping("/upload")
    @ResponseBody
    public String upload(MultipartFile file) {
        if (file.isEmpty()) {
            return "file is null";
        }

        String originFileName = file.getOriginalFilename();
        String destFileLocation = "C:\Users\Administrator\Desktop\" + originFileName;
        File destFile = new File(destFileLocation);
        try {
            file.transferTo(destFile);
            return "upload ok! upload file location: " + destFileLocation;
        } catch (Exception ex) {
            return "upload false! reason: " + ex.getMessage();
        }
    }

    @RequestMapping("/uploads")
    public String uploads() {
        return "/multiupload.html";
    }
}

2、多文件上传

multiupload.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>upload file</title>
</head>
<body>
    <form action="/uploadfile/uploads" method="post" enctype="multipart/form-data">
        <input type="file" name="files"><br/>
        <input type="file" name="files"><br/>
        <input type="file" name="files"><br/>
        <input type="submit" value="上传">
    </form>
</body>
</html>

http://localhost:8080/uploadfile/uploads

package com.archibladwitwicke.springboot2.chapter03.controller;

import org.springframework.stereotype.Controller;
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 java.io.File;

@Controller
@RequestMapping("/uploadfile")
public class UploadFileController {

    @RequestMapping("/uploads")
    public String uploads() {
        return "/multiupload.html";
    }

    @PostMapping("/uploads")
    @ResponseBody
    public String uploads(MultipartFile[] files) {

        String result = null;

        if (files.length == 0) {
            return "file is null";
        }

        for (MultipartFile file : files) {
            String originFileName = file.getOriginalFilename();
            String destFileLocation = "C:\Users\Administrator\Desktop\" + originFileName;
            File destFile = new File(destFileLocation);
            try {
                file.transferTo(destFile);
                result += "upload ok! upload file location: " + destFileLocation;
            } catch (Exception ex) {
                result = "upload false! reason: " + ex.getMessage();
            }
        }

        return result;
    }
}

SpringBoot2 上传文件 上传多文件

SpringBoot2 上传文件上传多文件