Springboot映射图片

在application.yml里面添加图片存放的位置

user:
  file:
    path: D:/home/data/schoolNews/

自己写上传和下载的方法

---

---

例如

package com.controller;


/**
 * 上传文件映射表
 */
@RestController
@RequestMapping("file")
@SuppressWarnings({"unchecked","rawtypes"})
public class FileController{

    @Value("${user.file.path}")
    private String filePath;

    @Autowired
    private ConfigService configService;
    /**
	 * 上传文件
	 */
    @RequestMapping("/upload")
    public R upload(@RequestParam("file") MultipartFile file,String type) throws Exception {
        if (file.isEmpty()) {
            throw new EIException("上传文件不能为空");
        }
        String fileExt = file.getOriginalFilename().substring(file.getOriginalFilename().lastIndexOf(".")+1);
        File upload = new File(filePath,"/upload/");
        if(!upload.exists()) {
            upload.mkdirs();
        }
        String fileName = new Date().getTime()+"."+fileExt;
        File dest = new File(upload.getAbsolutePath()+"/"+fileName);
        file.transferTo(dest);

        if(StringUtils.isNotBlank(type) && type.equals("1")) {
            ConfigEntity configEntity = configService.selectOne(new EntityWrapper<ConfigEntity>().eq("name", "faceFile"));
            if(configEntity==null) {
                configEntity = new ConfigEntity();
                configEntity.setName("faceFile");
                configEntity.setValue(fileName);
            } else {
                configEntity.setValue(fileName);
            }
            configService.insertOrUpdate(configEntity);
        }
        return R.ok().put("file", fileName);
    }

    /**
	 * 下载文件
	 */
    @IgnoreAuth
    @RequestMapping("/download")
    public ResponseEntity<byte[]> download(@RequestParam String fileName) {
        try {
            File upload = new File(filePath,"/upload/");
            if(!upload.exists()) {
                upload.mkdirs();
            }
            File file = new File(upload.getAbsolutePath()+"/"+fileName);
            if(file.exists()){
                /*if(!fileService.canRead(file, SessionManager.getSessionUser())){
					getResponse().sendError(403);
				}*/
                HttpHeaders headers = new HttpHeaders();
                headers.setContentType(MediaType.APPLICATION_OCTET_STREAM);    
                headers.setContentDispositionFormData("attachment", fileName);    
                return new ResponseEntity<byte[]>(FileUtils.readFileToByteArray(file),headers, HttpStatus.CREATED);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        return new ResponseEntity<byte[]>(HttpStatus.INTERNAL_SERVER_ERROR);
    }

}

添加映射让前端显示图片

package com.config;


@Configuration
public class InterceptorConfig extends WebMvcConfigurationSupport{

	@Value("${user.file.path}")
	private String filePath;


	@Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
		registry.addResourceHandler("/**").addResourceLocations("file:/" + filePath)
		;
		super.addResourceHandlers(registry);
    }
}