Java Web(SpringBoot 2.x)上传文件夹，完整代码

分手后的思念是犯贱 2022-04-23 11:22 115阅读 0赞

### 1、pom.xml ###

<dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
            </dependency>
            <dependency>
                <groupId>commons-io</groupId>
                <artifactId>commons-io</artifactId>
                <version>2.4</version>
            </dependency>
            
            <dependency>
                <groupId>commons-fileupload</groupId>
                <artifactId>commons-fileupload</artifactId>
                <version>1.3.3</version>
            </dependency>

### 2、SpringBootApplication ###

package cn.hadron;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.boot.web.servlet.MultipartConfigFactory;
    import org.springframework.context.annotation.Bean;
    import javax.servlet.MultipartConfigElement;
    
    @SpringBootApplication
    public class DbApplication {
    
        public static void main(String[] args) {
            SpringApplication.run(DbApplication.class, args);
        }
    
        @Bean
        public MultipartConfigElement multipartConfigElement() {
            MultipartConfigFactory factory = new MultipartConfigFactory();
            //单个文件最大   KB,MB
            factory.setMaxFileSize("100MB");
            /// 设置总上传数据总大小
            factory.setMaxRequestSize("500MB");
            return factory.createMultipartConfig();
        }
    
    }

### 3、controller ###

package cn.hadron.controller;
    
    importcn.hadron.db.util.FileUtil;
    import org.springframework.stereotype.Controller;
    import org.springframework.web.bind.annotation.ModelAttribute;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestMethod;
    import org.springframework.web.bind.annotation.RequestParam;
    import org.springframework.web.multipart.MultipartFile;
    import java.io.File;
    import java.io.IOException;
    
    @Controller
    @RequestMapping(value = "/file")
    public class FileController {
        @RequestMapping(value="/upload.do",method= RequestMethod.POST)
        public String upload(@RequestParam("dir") MultipartFile[] dir) {
            System.out.println("上传文件夹...");
            File file;
            String fileName="";
            String filePath="";
            for (MultipartFile f : dir) {
                fileName=f.getOriginalFilename();
                String type=f.getContentType();
                System.out.println("\n"+fileName+" ,"+type);
                filePath="D:\\upload\\"+fileName.substring(0,fileName.lastIndexOf("/"));
                if(!FileUtil.isDir(filePath)){
                    FileUtil.makeDirs(filePath);
                }
                file = new File("D:\\upload\\" + fileName);
                try {
                    file.createNewFile();
                    //将上传文件保存到一个目标文件中
                    f.transferTo(file);
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return "filelist";
        }
    }

package cn.hadron.db.util;
    
    import java.io.*;
    import java.util.ArrayList;
    import java.util.List;
    import org.apache.commons.io.FileUtils;
    
    
    
    /**
     * 文件操作工具类
     *
     * @author cyq
     *
     */
    public class FileUtil {
    
    	public static boolean isFile(String filepath) {
    		File f = new File(filepath);
    		return f.exists() && f.isFile();
    	}
    
    	public static boolean isDir(String dirPath) {
    		File f = new File(dirPath);
    		return f.exists() && f.isDirectory();
    	}
    
    	/**
    	 * 创建多级目录
    	 * @param path
    	 */
    	public static void makeDirs(String path) {
    		File file = new File(path);
    		// 如果文件夹不存在则创建
    		if (!file.exists() && !file.isDirectory()) {
    			file.mkdirs();
    		}else {
    			System.out.println("创建目录失败："+path);
    		}
    	}
    }

### 4、上传页面 ###

<!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
    </head>
    <body>
    <form action="/db/file/upload.do" enctype="multipart/form-data" method="post">
        <input id="dir" type="file" name="dir" webkitdirectory mozdirectory/>
        <input id="uploadDir" type="submit" value="提交文件夹">
    </form>
    </body>
    </html>

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