SpringBoot项目上传文件报错

Posted 2021-01-05 suebuliy

SpringBoot项目上传图片报错 FileSizeLimitExceededException: The field upload exceeds its maximum permitted size of 1048576 bytes.

处理办法：

1.application.yml文件添加

spring.http.multipart.maxFileSize : 3Mb
spring.http.multipart.maxRequestSize : 100Mb

2.Application.java文件添加

@Bean
public MultipartConfigElement multipartConfigElement() {
     MultipartConfigFactory factory = new MultipartConfigFactory();
     //允许上传的文件最大值
     factory.setMaxFileSize("3MB"); //KB,MB
     /// 设置总上传数据总大小
     factory.setMaxRequestSize("100MB");
     return factory.createMultipartConfig();
}

3.Controller文件内添加异常处理

@ExceptionHandler(MultipartException.class)
@ResponseBody
public String handleAll(){
    String errorMsg = "文件过大，不能超过3MB";
    return errorMsg;
}

 注：Controller class文件需添加注解@ControllerAdvice