SpringBoot文件上传大小限制

最近项目中使用SpringBoot开发文件上传功能，后台异常如下：

org.apache.tomcat.util.http.fileupload.FileUploadBase$SizeLimitExceededException: 

    the request was rejected because its size (20192551) exceeds the configured maximum (10485760)

意即文件大小超出默认最大值（10485760=10Mb）

官方文档配置如下：

# MULTIPART (MultipartProperties)
spring.servlet.multipart.enabled=true # Whether to enable support of multipart uploads.
spring.servlet.multipart.file-size-threshold=0 # Threshold after which files are written to disk. Values can use the suffixes "MB" or "KB" to indicate megabytes or kilobytes, respectively.
spring.servlet.multipart.location= # Intermediate location of uploaded files.
spring.servlet.multipart.max-file-size=1MB # Max file size. Values can use the suffixes "MB" or "KB" to indicate megabytes or kilobytes, respectively.
spring.servlet.multipart.max-request-size=10MB # Max request size. Values can use the suffixes "MB" or "KB" to indicate megabytes or kilobytes, respectively.
spring.servlet.multipart.resolve-lazily=false # Whether to resolve the multipart request lazily at the time of file or parameter access.

所以说，在application.properties配置文件中，修改该默认值即可：

spring.servlet.multipart.max-file-size=30MB # Max file size. Values can use the suffixes "MB" or "KB" to indicate megabytes or kilobytes, respectively.
spring.servlet.multipart.max-request-size=50MB # Max request size. Values can use the suffixes "MB" or "KB" to indicate megabytes or kilobytes, respectively.

问题解决；