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Exception starting filter [CustomFilter]

See original GitHub issue

Expected Behavior

Application should start

Current Behavior

Application does not start.

Instead the application fails to start and results in the exception

java.lang.NullPointerException: null
        at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:270)
	at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:106)
	at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4530)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5169)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)

The affected line of code is in the class org.springframework.web.filter.GenericFilterBean. The application can not initialize the logger variable and therefore results in a NullPointerException.

Possible Solution

Unknown to me

Steps to Reproduce

Not needed. Just start the application with the chaos-monkey profile. When omitted the application will start normally.

Context (Environment)

A custom filter that extends the org.springframework.web.filter.GenericFilterBean
Spring Boot 2.1.7
JDK Amazon Corretto 11.04

Issue Analytics

State:
Created 4 years ago
Reactions:1
Comments:10 (4 by maintainers)

Top GitHub Comments

3reactions

buderrecommented, Nov 29, 2019

Hey guys. I will try to reproduce the behavior with a small code example and reach out to you guys. Sorry for the delay.

2reactions

dkdewcommented, Jun 7, 2021

hi,

i was facing this issue with custom-filters in my spring-boot app. The application fails to run with chaos-monkey profile active, when we have declared the CustomFilter with @component annotation. The simple workaround is to create the filter with @Bean annotations.

Here is the example code, how i did it. https://github.com/dkdew/spring-boot-chaos-monkey-starting-filter

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