静态html春季启动时出现405错误代码

Question

I am trying to return a static html( index.html ) page using spring boot but I am alway getting a 405 error whem I trying ( http://localhost:8080/ ). Strange fact is that debugger enters index() method.

HomeController:

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

@Controller
public class HomeController {

    @RequestMapping(value = "/", method = RequestMethod.GET)
    public String index() {
        return "index.html";
    }
}

I have tried to return "index.html" and "index" strings.

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ConfigurableApplicationContext;

@SpringBootApplication
public class Application {

    public static void main(String[] args) throws InterruptedException {
        ConfigurableApplicationContext applicationContext
                = SpringApplication.run(Application.class, args);
    }
}

location of html file is: src\\main\\resources\\public\\index.html

here goes a part of startup logger output:

INFO 8284 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/],methods=[GET]}" onto public java.lang.String com.acs.map.controller.HomeController.index()

Screanshot of an error

and i am running project with gradle: gradle bootRun

Logger message after request:

WARN 3988 --- [nio-8080-exec-6] o.s.web.servlet.PageNotFound             : Request method 'GET' not supported

Also I have tried with and without this configuration:

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.view.InternalResourceView;
import org.springframework.web.servlet.view.UrlBasedViewResolver;

@Configuration
@EnableWebMvc
public class WebConfig extends WebMvcConfigurerAdapter {

    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("/public/**").addResourceLocations("classpath:/public/");
        registry.addResourceHandler("/resources/public/**").addResourceLocations("classpath:/resources/public/");
        super.addResourceHandlers(registry);
    }

    @Bean
    public ViewResolver viewResolver() {
        UrlBasedViewResolver viewResolver = new UrlBasedViewResolver();
        viewResolver.setViewClass(InternalResourceView.class);
        return viewResolver;
    }
}

Answer 1

By default Spring Boot will serve static content from a directory called /static (or /public or /resources or /META-INF/resources). I did a quick check by following the below structure and was successful.

So I believe by extending WebMvcConfigurerAdapter class like below and it should return static content using your current controller code (without the WebConfig class).You can use viewResolver as well to map between view names and actual views as well by further modifying your code.

    @SpringBootApplication
public class Application extends WebMvcConfigurerAdapter{
    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

Here are my project dependencies