您需要在application.properties文件中设置默认配置

You need to set a default configuration in application.properties file

spring.http.multipart.max-file-size=30MB
spring.http.multipart.max-request-size=30MB

在你的控制器中你需要抛出 MaxUploadSizeExceededException 基于文件大小的异常：

And in your controller you need to throw MaxUploadSizeExceededException exception based on the file size :

long  limit = 1024 * 1024 * 10; 
if (file.getSize() > limit) {
    throw new MaxUploadSizeExceededException(limit);
}