我正在尝试在tomcat服务器中上传一个大型CSV文件（500MB）。但是每次遇到“ 504网关超时”错误时，都会出现此错误。
catalina.out文件没有任何问题
**Part of my application.properties file**
async-timeout-ms: 1800000 #AsyncTimeout on the connector.
keepAliveTimeout: 1800000 # KeepAliveTimeout on the nioHandler.
connection-timeout-ms: 1800000 # Connection Timeout on the nioHandler
innodb_strict_mode = 0
GLOBAL max_connections = 1500;
# ==============================================================
spring.servlet.multipart.maxFileSize=800MB
spring.servlet.multipart.maxRequestSize=800MB
spring.http.multipart.max-file-size=800MB
spring.http.multipart.max-request-size=800MB
在堆栈跟踪中发生以下错误：
...
java.lang.OutOfMemoryError: Java heap space
...
Caused by: org.springframework.jmx.export.UnableToRegisterMBeanException: Unable to register MBean [HikariDataSource (HikariPool-4)] with key 'dataSource'; nested exception is javax.management.InstanceAlreadyExistsException: dataSource_flashsale:name=dataSource,type=HikariDataSource