springboot，文件上传1

 

application.properties

#设置POST提交的最大值，不限制
spring.servlet.multipart.max-file-size=10MB
spring.servlet.multipart.max-request-size=10MB

#将项静态目资源路径映射到系统资源路径下（确保http://localhost:8080/1.png可访问）
#spring.web.resources.static-locations=file:d:/uploads


# 文件上传路径
file.uploadFolder=D:/uploads/

#log4j配置--------------------------
logging.config=classpath:log4j2.xml

　　

Upload.java

package com.example.demo.controller;

import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.util.FileCopyUtils;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.MultipartHttpServletRequest;

import javax.servlet.http.HttpServletRequest;
import java.io.*;
import java.util.List;

@Slf4j
@CrossOrigin
@RestController
@RequestMapping("/upload/")
public class Upload {

    // 文件上传路径,从配置项获取
    @Value("${file.uploadFolder}")
    private String basePath;

    // 简单接口，方便测试
    @PostMapping("hello")
    public String test1(){
        return "hello";
    }

    // 接收文件夹（实际为文件，但是能获取到相对路径及文件名）
    @PostMapping("uploadFolder")
    @ResponseBody
    public String uploadFileFolder(@RequestParam("file") MultipartFile[] files) {

        log.info("uploadFolder 被调用");
        for (MultipartFile file : files) {

            log.info("file.getOriginalFilename() = {}",file.getOriginalFilename());//飞机/3.jpg或飞机/31b.jpg等
            log.info("file.getName() = {}",file.getName());
            log.info("file.getResource() = {}",file.getResource());
            log.info("file.getContentType() = {}",file.getContentType());
            log.info("file.getSize() = {}",file.getSize());

            // 目录不会自动创建，否则会异常
            File destinationFile = new File(basePath + file.getOriginalFilename());
            try {
                FileCopyUtils.copy(file.getBytes(), destinationFile);

                log.info("上传成功 destinationFile = {}",destinationFile);
            } catch (IOException e) {
                e.printStackTrace();
            }
        }


        return "333";
    }
}

　　

执行结果

 

访问路径

package com.example.demo.config;

import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

@Slf4j
@Configuration
public class ProviderMvcConfig implements WebMvcConfigurer {

    /**
     * 设置文件虚拟路径映射
     * 访问路径：
     * http://localhost:8080/upload/files/1.png
     * http://localhost:8080/1.png
     * */
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/upload/files/**").addResourceLocations("file:d:/uploads/");//这儿必须在尾部加/
    }
}

 

http://localhost:8080/upload/files/1.png

http://localhost:8080/1.png