Springboot version: 2.3.0.release
Front end use File upload with unityengine.wwwform
Service error:
org.springframework.web.multipart.MultipartException: Failed to parse multipart servlet request; nested exception is java.lang.NoClassDefFoundError: javax/mail/internet/MimeUtility
Positioning questions:
POM file import dependency
<dependency>
<groupId>javax.mail</groupId>
<artifactId>mail</artifactId>
<version>1.4.7</version>
</dependency>
Re run and solve the problem (* ^ ▽ ^ *)~~