最近项目完成后打包成war发布到服务器遇到访问应用404问题，用的是tomcat8.5，错误信息如下：
o.s.b.w.servlet.support.ErrorPageFilter : Cannot forward to error page for request [/login] as the response has already been committed. As a result, the response may have the wrong status code. If your application is running on WebSphere Application Server you may be able to resolve this problem by setting com.ibm.ws.webcontainer.invokeFlushAfterService to false项目是springboot+security+mybatis，ide 用的idea，打包方式用的是build菜单中的Build Artifactissecurity配置protected void configure(HttpSecurity http) throws Exception {
http.authorizeRequests()
//处理preflight请求
//.requestMatchers(CorsUtils::isPreFlightRequest).permitAll()
.antMatchers("/user/login").permitAll()
.antMatchers("/login").permitAll()
.antMatchers("/login/error").permitAll()
.anyRequest().authenticated()
.and()
//设置登录页
.formLogin()
//设置登录成功页
.loginPage("/login")
.successHandler(securityLoginSuccessHandler)
.failureHandler(securityLoginFailureHandler)
.and()
.logout()
.logoutUrl("/logout")
.logoutSuccessHandler(securityLogoutSuccessHandler)
.deleteCookies("JSESSIONID")
.and()
.sessionManagement()
//session超时处理
.invalidSessionUrl("/login/invalid")
.maximumSessions(1)
//老用户被踢出后操作
.expiredSessionStrategy(new SecurityExpiredSessionStrategy());
http.csrf().disable()
.exceptionHandling().accessDeniedHandler(securityAccessDeniedHandler);
}loginpage的“/login”配置如下:@RequestMapping("/login")
public String showLogin() throws IOException {
System.out.println("调用loginController的登录方法");
return "index.html#/login";
}在启动类加入配置：public class KpApplication extends SpringBootServletInitializer {
public static void main(String[] args) {
SpringApplication.run(KpApplication.class, args);
}
@Bean
public ErrorPageFilter errorPageFilter() {
return new ErrorPageFilter();
}
@Bean
public FilterRegistrationBean disableSpringBootErrorFilter(ErrorPageFilter filter) {
FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean();
filterRegistrationBean.setFilter(filter);
filterRegistrationBean.setEnabled(false);
return filterRegistrationBean;
}
}
重新打包发布到linux服务器，新的错误信息为: o.s.b.d.LoggingFailureAnalysisReporter : ***************************APPLICATION FAILED TO START***************************Description:The bean 'errorPageFilter', defined in org.springframework.boot.web.servlet.support.ErrorPageFilterConfiguration, could not be registered. A bean with that name has already been defined in com.kpzdh.kp.KpApplication and overriding is disabled.Action:Consider renaming one of the beans or enabling overriding by setting spring.main.allow-bean-definition-overriding=true然后在yml配置中加入配置：spring:
jmx:
default-domain: demo
datasource:
driver-class-name: com.mysql.cj.jdbc.Driver
url: jdbc:mysql://localhost:3306/demo?useUnicode=true&characterEncoding=utf-8&useSSL=true&serverTimezone=GMT%2B8
username: root
password: root
main:
allow-bean-definition-overriding: true
如上配置之后，两个错误信息都没有出现了，但是还是404，查看日志，"/login"路径的"调用loginController的登录方法"已经输出了，
但是浏览器控制台中，/login路径还是404，请问该如何解决呢？这个问题已经困扰很久了，希望大家能帮帮我，万分感谢！
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