spring-boot-online-exam/backend/src/main/java/lsgwr/exam/config/ServletConfig.java

package lsgwr.exam.config;

import org.springframework.boot.web.server.ConfigurableWebServerFactory;
import org.springframework.boot.web.server.ErrorPage;
import org.springframework.boot.web.server.WebServerFactoryCustomizer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpStatus;

@Configuration
public class ServletConfig {
    // 创建一个WebServerFactoryCustomizer bean，用于自定义WebServerFactory
    @Bean
    public WebServerFactoryCustomizer<ConfigurableWebServerFactory> webServerFactoryCustomizer() {
        // 返回一个lambda表达式，用于自定义WebServerFactory
        return factory -> {
            // 创建一个ErrorPage对象，用于处理404错误
            ErrorPage error404Page = new ErrorPage(HttpStatus.NOT_FOUND, "/");
            // 将ErrorPage对象添加到WebServerFactory中
            factory.addErrorPages(error404Page);
        };
    }
}