springboot 上传图片存储在后台，并指定存储路径

1、springboot 2.x

2、application.properties

#单个数据的大小
spring.servlet.multipart.maxFileSize=10Mb
#总数据的大小
spring.servlet.multipart.maxRequestSize=10Mb

#文件上传后存储路径：D:\home\capture\5\*.jpg(具体配置如下)
#访问Url:http://ip:port/hg-zhwg/upload/5/*.jpg

#文件上传目录(window是d/e/f盘， linux是/)（注意Linux和Windows上的目录结构不同）
#file.uploadFolder=/
file.uploadFolder=d://
# 设备截图文件保存路径(文件存在具体的文件夹的路径)
zhwg.captrue.image.path=home/capture/
#静态资源对外暴露的访问路径(访问图片的路径)
file.staticAccessPath=/upload/**

启动类，需要增加multipartConfigElement方法

public class HgZhwgApplication {
	@Value("${file.uploadFolder}")
	private String uploadFolder;

    public static void main(String[] args) {
        SpringApplication.run(HgZhwgApplication.class, args);
    }
    
    @Bean
    MultipartConfigElement multipartConfigElement() {
        MultipartConfigFactory factory = new MultipartConfigFactory();
        factory.setLocation(uploadFolder);
        return factory.createMultipartConfig();
    }
}

拦截器中的配置，增加addResourceHandlers方法，指定访问路径。addInterceptors方法需要过滤掉staticAccessPath

@Configuration
public class WebMvcConfig implements WebMvcConfigurer {
	@Value("${file.staticAccessPath}")
	private String staticAccessPath;
	
	@Value("${zhwg.captrue.image.path}")
	private String captureImagePath;
	
	@Value("${file.uploadFolder}")
	private String uploadFolder;

	@Bean
	public SecutityInterceptor securityInterceptor() {
		return new SecutityInterceptor();
	}

	@Override
	public void addInterceptors(InterceptorRegistry registry) {
		registry.addInterceptor(securityInterceptor()).addPathPatterns("/**").excludePathPatterns("/login/**")
				.excludePathPatterns("/deviceCmd/**").excludePathPatterns("/image/**")
				.excludePathPatterns(staticAccessPath);

	}

	@Override
	public void addCorsMappings(CorsRegistry registry) {
		registry.addMapping("/**").allowedOrigins("*").allowCredentials(true).allowedMethods("*").maxAge(3600);
	}

	@Override
	public void addResourceHandlers(ResourceHandlerRegistry registry) {
		registry.addResourceHandler(staticAccessPath).addResourceLocations("file:" + uploadFolder + captureImagePath);
	}

}

最后就是上传文件的方法

@RequestMapping("/recive/{devType}/{cmdLogId}")
	public void reciveCameraCapture(@PathVariable("devType") String devType, @PathVariable("cmdLogId") String cmdLogId,
			@RequestParam("captureImg") MultipartFile captureImg,
			@RequestParam(value = "cameraPreviewId", required = false) Long cameraPreviewId,
			@RequestParam("token") String token, HttpServletRequest request, HttpServletResponse response) {
		if (captureImg == null) {
			return;
		}

		// 保存图片
		String filename = captureImg.getOriginalFilename();
		// 文件后缀名
		String prefix = filename.substring(filename.lastIndexOf(".") + 1);
		String destFilename = UUID.randomUUID().toString().replace("-", "") + "." + prefix;
		
		File fileUrl = new File(uploadFolder + captureImagePath + devType);

		if (!fileUrl.exists()) {
			fileUrl.mkdirs();
		}

		File destImage = new File(fileUrl, destFilename);

		logger.debug("图片保存地址为：" + destImage);
		try {
			captureImg.transferTo(destImage);
		} catch (IOException e) {
			logger.error("图片保存失败", e);
		}
	}

访问：成功