spring boot文件上传大小设置

在application.properties
里添加配置：

spring.http.multipart.maxFileSize=50Mb
spring.http.multipart.maxRequestSize=50Mb

控制web提交的文件大小，如果大小超过了，请求不会到后台

	@Bean(name = "multipartResolver")
	public MultipartResolver multipartResolver() {
		CommonsMultipartResolver resolver = new CommonsMultipartResolver();
		resolver.setDefaultEncoding("UTF-8");
		resolver.setResolveLazily(true);
		resolver.setMaxInMemorySize(40960);
		resolver.setMaxUploadSize(10 * 1024 * 1024);// 上传文件大小 10M 10*1024*1024
		return resolver;
	}

从代码上控制文件大小过滤.