Java Spring Boot How to map my app root to index html

Question

I m new to Java and to Spring  How can I map my app root http   localhost 8080  to a static index html  If I navigate to http   localhost 8080 index html its works fine   My app structure is      My config WebConfig java looks like this    Configuration  EnableWebMvc  ComponentScan public class WebConfig extends WebMvcConfigurerAdapter         Override     public void addResourceHandlers ResourceHandlerRegistry registry            registry addResourceHandler        addResourceLocations                     I tried to add registry addResourceHandler      addResourceLocations   index html    but it fails

User · Answer

Configuration    EnableWebMvc   public class WebAppConfig extends WebMvcConfigurerAdapter           Override     public void addViewControllers ViewControllerRegistry registry            registry addRedirectViewController       index html

User · Answer

index html file should come under below location -     src resources public index html OR    src resources static index html if both location defined then which first occur index html will call from that directory  The source code looks like -   package com bluestone pms app boot   import org springframework boot Banner  import org springframework boot Banner  import org springframework boot SpringApplication  import org springframework boot autoconfigure EnableAutoConfiguration  import org springframework boot autoconfigure SpringBootApplication  import org springframework boot builder SpringApplicationBuilder  import org springframework boot web support SpringBootServletInitializer  import org springframework context annotation ComponentScan      SpringBootApplication   EnableAutoConfiguration  ComponentScan basePackages     com your pkg     public class BootApplication extends SpringBootServletInitializer              param args Arguments    public static void main String   args    SpringApplication application   new SpringApplication BootApplication class      Setting Boot banner off default value is true    application setBannerMode Banner Mode OFF   application run args               param builder a builder for the application context      return the application builder      see SpringApplicationBuilder       Override  protected SpringApplicationBuilder configure SpringApplicationBuilder    builder        return super configure builder

User · Answer

if it is a Spring boot App    Spring Boot automatically detects index html in public static webapp folder  If you have written any controller  Requestmapping      it will override the default feature and it will not show the index html unless you type localhost 8080 index html

User · Answer

If you use the latest spring-boot 2 1 6 RELEASE with a simple  RestController annotation then you do not need to do anything  just add your index html file under the resources static folder   project    -- src          -- main                -- resources                    -- static                        -- index html   Then hit the URL http   localhost 8080  Hope that it will help everyone

User · Answer

You can add a RedirectViewController like    Configuration public class WebConfiguration implements WebMvcConfigurer         Override     public void addViewControllers ViewControllerRegistry registry            registry addRedirectViewController        index html

User · Answer

It would have worked out of the box if you hadn t used  EnableWebMvc annotation  When you do that you switch off all the things that Spring Boot does for you in WebMvcAutoConfiguration  You could remove that annotation  or you could add back the view controller that you switched off    Override public void addViewControllers ViewControllerRegistry registry        registry addViewController      setViewName  forward  index html

User · Answer

Update  Jan-2019  First create public folder under resources and create index html file  Use WebMvcConfigurer instead of WebMvcConfigurerAdapter   import org springframework context annotation Configuration  import org springframework web servlet config annotation ViewControllerRegistry  import org springframework web servlet config annotation WebMvcConfigurer    Configuration public class WebAppConfig implements WebMvcConfigurer         Override     public void addViewControllers ViewControllerRegistry registry            registry addViewController      setViewName  forward  index html

User · Answer

An example of Dave Syer s answer   import org springframework context annotation Bean  import org springframework context annotation Configuration  import org springframework web servlet config annotation ViewControllerRegistry  import org springframework web servlet config annotation WebMvcConfigurerAdapter    Configuration public class MyWebMvcConfig         Bean     public WebMvcConfigurerAdapter forwardToIndex             return new WebMvcConfigurerAdapter                  Override             public void addViewControllers ViewControllerRegistry registry                       forward requests to  admin and  user to their index html                 registry addViewController   admin   setViewName                           forward  admin index html                    registry addViewController   user   setViewName                           forward  user index html

User · Answer

I had the same problem  Spring boot knows where static html files are located    Add index html into resources static folder Then delete full controller method for root path like  RequestMapping      etc Run app and check http   localhost 8080  Should work

User · Answer

Inside Spring Boot  I always put the webpages inside a folder like public or webapps or views and place it inside src main resources directory as you can see in application properties also     and this is my application properties   server port 15800 spring mvc view prefix  public  spring mvc view suffix  html spring datasource url jdbc mysql   localhost 3306 hibernatedb spring datasource username root spring datasource password password spring datasource driver-class-name com mysql jdbc Driver  spring jpa properties hibernate dialect   org hibernate dialect MySQL5InnoDBDialect spring jpa hibernate ddl-auto   update spring jpa properties hibernate format sql   true  logging level org hibernate SQL DEBUG logging level org hibernate type descriptor sql BasicBinder TRACE   as soon you put the url like servername 15800 and this request received by Spring Boot occupied Servlet dispatcher it will exactly search the index html and this name will in case sensitive as the spring mvc view suffix which would be html  jsp  htm etc   Hope it would help manyone

[java] Java Spring Boot: How to map my app root (“/”) to index.html?

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