上传图片出现org.springframework.web.multipart.MaxUploadSizeExceededException

问题描述

springboot项目，在做图片上传项目时，上传图片出现下面的异常：

org.springframework.web.multipart.MaxUploadSizeExceededException: Maximum upload size exceeded; nested exception is java.lang.IllegalStateException: org.apache.tomcat.util.http.fileupload.impl.FileSizeLimitExceededException: The field file exceeds its maximum permitted size of 1048576 bytes.
	at org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.handleParseFailure(StandardMultipartHttpServletRequest.java:122)
	at org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.parseRequest(StandardMultipartHttpServletRequest.java:115)
	at org.springframework.web.multipart.support.StandardMultipartHttpServletRequest.<init>(StandardMultipartHttpServletRequest.java:88)
	at org.springframework.web.multipart.support.StandardServletMultipartResolver.resolveMultipart(StandardServletMultipartResolver.java:87)
	at org.springframework.web.servlet.DispatcherServlet.checkMultipart(DispatcherServlet.java:1178)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1012)
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)

原因

这个错误是因为Spring Boot应用程序接收到的文件大小超过了默认的最大限制。默认情况下，Spring Boot限制上传文件的大小为1MB。

要解决这个问题，你可以通过配置Spring Boot应用程序来增加文件上传的最大限制。

解决方案

修改application.properties或application.yml文件中

application.properties:

spring.servlet.multipart.max-file-size=10MB
spring.servlet.multipart.max-request-size=10MB

application.yml:

spring:
  servlet:
    multipart:
      max-file-size: 10MB
      max-request-size: 10MB