java.lang.RuntimeException: java.io.IOException: 缓冲区溢出且未设置接收器，请限制[4,096]和缓冲区长度[4,096]

环境：tomcat9

问题：tomcat控制台中文报错，百度难以找到答案

java.lang.RuntimeException: java.io.IOException: 缓冲区溢出且未设置接收器，请限制[4,096]和缓冲区长度[4,096]

英文内容

java.io.IOException: Buffer overflow and no sink is set, limit [4,096] and buffer length [4,096]

解决:查询overflow

https://stackoverflow.com/questions/57871348/buffer-overflow-error-when-calling-request-authenticate-on-tomcat

Seeing as there's no other information on the internet,adding a maxSavePostSize resolved this issue for me. For example, setting to 2MB to allow larger posts from IDP:

<Connector port="8080" protocol="HTTP/1.1"
               connectionTimeout="20000"
               redirectPort="8443" maxSavePostSize ="2097152" />

添加新属性maxSavePostSize ="2097152"