I trying my hand out in Spring boot exception handling . I have created a REST application and the application works for all valid url. I am trying to handle the exceptions for invalid url. But if i try hitting the application with an invalid url , i am getting the below exception:-
13:04:02.940 [http-bio-8081-exec-3] INFO o.s.web.servlet.DispatcherServlet - FrameworkServlet 'dispatcherServlet': initialization completed in 44 ms
13:04:03.177 [http-bio-8081-exec-3] ERROR o.s.boot.context.web.ErrorPageFilter - Cannot forward to error page for/sample/processgetMessage5 (response is committed), so this response may have the wrong status code
java.lang.IllegalStateException: Cannot forward after response has been committed
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:348) ~[catalina.jar:7.0.55]
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:338) ~[catalina.jar:7.0.55]
at org.springframework.boot.context.web.ErrorPageFilter.handleErrorStatus(ErrorPageFilter.java:123) [spring-boot-1.1.4.RELEASE.jar:1.1.4.RELEASE]
at org.springframework.boot.context.web.ErrorPageFilter.doFilter(ErrorPageFilter.java:104) [spring-boot-1.1.4.RELEASE.jar:1.1.4.RELEASE]
at org.springframework.boot.context.web.ErrorPageFilter.doFilter(ErrorPageFilter.java:89) [spring-boot-1.1.4.RELEASE.jar:1.1.4.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) [catalina.jar:7.0.55]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [catalina.jar:7.0.55]
Being new to spring boot I am not able to figure out the reason. Any pointers or suggestion will be helpful.
Wanted to try out the options mentioned in this siteenter link description here, once i am able to remove the exception.
Any pointers on how to handle 404 with annotations in spring 4 will be very helpful.
Trying out the below code :-
@Configuration
@EnableWebMvc
@EnableSwagger
public class WebConfig extends WebMvcConfigurerAdapter {
.......
@Bean
public EmbeddedServletContainerCustomizer containerCustomizer() {
return new EmbeddedServletContainerCustomizer() {
@Override
public void customize(ConfigurableEmbeddedServletContainer container) {
ErrorPage error401Page = new ErrorPage(HttpStatus.UNAUTHORIZED, "/401.html");
ErrorPage error404Page = new ErrorPage(HttpStatus.NOT_FOUND, "/401.html");
ErrorPage error500Page = new ErrorPage(HttpStatus.INTERNAL_SERVER_ERROR, "/401.html");
container.addErrorPages(error401Page, error404Page, error500Page);
}
};
}
Adding the dependency from pom.xml
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
<version>1.1.5.RELEASE</version>
<exclusions>
<exclusion>
<artifactId>commons-logging</artifactId>
<groupId>commons-logging</groupId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>1.1.5.RELEASE</version>
<exclusions>
<exclusion>
<artifactId>commons-logging</artifactId>
<groupId>commons-logging</groupId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
<version>1.1.5.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<version>1.1.5.RELEASE</version>
<scope>test</scope>
</dependency>
PFB the updated stack trace:-
22:09:03.210 [http-bio-8081-exec-3] INFO o.s.web.servlet.DispatcherServlet - FrameworkServlet 'dispatcherServlet': initialization completed in 28 ms
22:09:03.413 [http-bio-8081-exec-3] ERROR o.s.boot.context.web.ErrorPageFilter - Cannot forward to error page for/applicationurl/processMessage11 (response is committed), so this response may have the wrong status code
java.lang.IllegalStateException: Cannot forward after response has been committed
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:348) ~[catalina.jar:7.0.55]
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:338) ~[catalina.jar:7.0.55]
at org.springframework.boot.context.web.ErrorPageFilter.handleErrorStatus(ErrorPageFilter.java:134) [spring-boot-1.1.5.RELEASE.jar:1.1.5.RELEASE]
at org.springframework.boot.context.web.ErrorPageFilter.doFilter(ErrorPageFilter.java:111) [spring-boot-1.1.5.RELEASE.jar:1.1.5.RELEASE]
at org.springframework.boot.context.web.ErrorPageFilter.access$000(ErrorPageFilter.java:58) [spring-boot-1.1.5.RELEASE.jar:1.1.5.RELEASE]
at org.springframework.boot.context.web.ErrorPageFilter$1.doFilterInternal(ErrorPageFilter.java:87) [spring-boot-1.1.5.RELEASE.jar:1.1.5.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-4.0.6.RELEASE.jar:4.0.6.RELEASE]
at org.springframework.boot.context.web.ErrorPageFilter.doFilter(ErrorPageFilter.java:100) [spring-boot-1.1.5.RELEASE.jar:1.1.5.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) [catalina.jar:7.0.55]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) [catalina.jar:7.0.55]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) [catalina.jar:7.0.55]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) [catalina.jar:7.0.55]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501) [catalina.jar:7.0.55
]
The application works fine for valid url mapping. It is build using spring boot. PFB the app annotated classes:-
@EnableJpaRepositories
@EnableAutoConfiguration
public class AppConfig {
public static void main(String[] args) {
SpringApplication.run(AppConfig .class, args);
}
@Configuration
@EnableWebMvc
public class WebApplicationConfig extends WebMvcConfigurerAdapter {
@Override
public void configureMessageConverters(
List<HttpMessageConverter<?>> converters) {
MappingJackson2HttpMessageConverter mappingJackson2HttpMessageConverter = new MappingJackson2HttpMessageConverter();
converters.add(mappingJackson2HttpMessageConverter);
converters.add(new StringHttpMessageConverter());
super.configureMessageConverters(converters);
}
public class WebApplicationXML extends SpringBootServletInitializer {
@Override
protected SpringApplicationBuilder configure(
SpringApplicationBuilder application) {
return application.sources(Application.class);
}
}
Manu
I have added the mapping to redirect to custom html pages if a 404 happens. PFB the changes done for this:
- Removed the Annotation @EnableWebMvc from the WebConfig.java class. This is done to remove the error “response already committed”, on trying any invalid url.
Add the below code in WebConfig.java class and the revenant html pages:
@Bean public EmbeddedServletContainerCustomizer containerCustomizer() { return new EmbeddedServletContainerCustomizer() { @Override public void customize(ConfigurableEmbeddedServletContainer container) { ErrorPage error401Page = new ErrorPage(HttpStatus.UNAUTHORIZED, "/401.html"); ErrorPage error404Page = new ErrorPage(HttpStatus.NOT_FOUND, "/404.html"); ErrorPage error500Page = new ErrorPage( HttpStatus.INTERNAL_SERVER_ERROR, "/500.html"); ErrorPage error505Page = new ErrorPage( HttpStatus.HTTP_VERSION_NOT_SUPPORTED, "/505.html"); ErrorPage error506Page = new ErrorPage( HttpStatus.METHOD_NOT_ALLOWED, "/405.html"); container.addErrorPages(error401Page, error404Page, error500Page, error505Page, error506Page); } }; }
Thanks a lot for the suggestions ans hep. It was very useful.
I followed this link after getting through the initial exeception
You can follow the below blog to handle mvc exception handling
http://spring.io/blog/2013/11/01/exception-handling-in-spring-mvc
Upgrade to Spring Boot 1.1.5.RELEASE.
来源：https://stackoverflow.com/questions/25605626/error-while-handling-404-error-for-spring-boot-rest-application