I was facing the same issues and solved it the following way:
1. Make sure the folder you are exporting is available to the web
public class WebMvcConfig extends WebMvcConfigurerAdapter { private static final String[] CLASSPATH_RESOURCE_LOCATIONS = { "classpath:/META-INF/resources/", "classpath:/resources/", "classpath:/static/", "classpath:/public/" }; @Override public void addResourceHandlers(ResourceHandlerRegistry registry) { registry.addResourceHandler("/**") .addResourceLocations(CLASSPATH_RESOURCE_LOCATIONS); } }
In addition you must put your css or styles folder into your *src/main/resources/(static|public|resources|META-INF/resources)* folder
2. Make sure your security policies don't block them
public class WebSecurityConfig extends WebSecurityConfigurerAdapter { @Override public void configure(WebSecurity web) throws Exception { //Web resources web.ignoring().antMatchers("/css/**"); web.ignoring().antMatchers("/scripts/**"); web.ignoring().antMatchers("/images/**"); } }

I was facing the same issues and solved it the following way:
1. Make sure the folder you are exporting is available to the web
public class WebMvcConfig extends WebMvcConfigurerAdapter { private static final String[] CLASSPATH_RESOURCE_LOCATIONS = { "classpath:/META-INF/resources/", "classpath:/resources/", "classpath:/static/", "classpath:/public/" }; @Override public void addResourceHandlers(ResourceHandlerRegistry registry) { registry.addResourceHandler("/**") .addResourceLocations(CLASSPATH_RESOURCE_LOCATIONS); } }
In addition you must put your **css** or **styles** folder into your *src/main/resources/*(*static*|*public*|*resources*|*META-INF/resources*) folder
1. Make sure your security policies don't block them
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {
@Override public void configure(WebSecurity web) throws Exception { //Web resources web.ignoring().antMatchers("/css/**"); web.ignoring().antMatchers("/scripts/**"); web.ignoring().antMatchers("/images/**"); } }
That should be enough