ErrorPageRegistrarBeanPostProcessor is not auto-configured in war deployments and the ErrorPageCustomizer is not applied #49176
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Closes spring-projectsgh-49148 Signed-off-by: Jay Choi <jayyoungchoi22@gmail.com>
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See gh-49176 Signed-off-by: Jay Choi <jayyoungchoi22@gmail.com>
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Closes gh-49148
In Spring Boot 4,
ErrorPageRegistrarBeanPostProcessoris only registered inServletWebServerConfiguration, which is not active in WAR deployments. This causes exceptions to bypass Spring's error handling and expose the servlet container's default error page.This commit registers
ErrorPageRegistrarBeanPostProcessoras a static@BeaninErrorPageFilterConfiguration, which is loaded exclusively in WAR mode viaSpringBootServletInitializer