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Spring - slash character in GET url

I have a GET method

@RequestMapping(
        value = "/path/{field}",
        method = RequestMethod.GET
)
public void get(@PathVariable String field) {
}

The field may contain forward slashes such as "some / thing / else" resulting in no path found. It could be something like "//////////////". Some examples:

www.something.com/path/field //works
www.something.com/path/some/thing
www.something.com/path///////////

I tried with {field :. *} and escaped the slash with% 2F, but still doesn't get to the method. Some help?

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3 answers


I solved the problem, for Spring Boot. You must first configure Spring to allow encoded forward slashes.

@Configuration
public class SecurityConfiguration extends WebSecurityConfigurerAdapter {
    @Bean
    public HttpFirewall allowUrlEncodedSlashHttpFirewall() {
        DefaultHttpFirewall firewall = new DefaultHttpFirewall();
        firewall.setAllowUrlEncodedSlash(true);
        return firewall;
    }

    @Override
    public void configure(WebSecurity web) throws Exception {
        web.httpFirewall(allowUrlEncodedSlashHttpFirewall());
    }
}

Then you need to resolve it from embedded tomcat:



public class Application extends WebMvcConfigurerAdapter {

    public static void main(String[] args) {
        System.setProperty("org.apache.tomcat.util.buf.UDecoder.ALLOW_ENCODED_SLASH", "true");
        SpringApplication.run(Application.class, args);
    }

    @Override
    public void configurePathMatch(PathMatchConfigurer configurer) {
        UrlPathHelper urlPathHelper = new UrlPathHelper();
        urlPathHelper.setUrlDecode(false);
        configurer.setUrlPathHelper(urlPathHelper);
    }
}

While this works, the best way to do it is to simply use query parameters.

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I ran into this problem sometimes. Looks like I resolved it in the following way.



@RequestMapping(value = "/{field:.*}")
...
String requestedField = URLDecoder.decode(field)
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As JeremyGrand said, you can map a route using **

and then parse the path yourself:

@GetMapping("/path/**")
public String test(HttpServletRequest request) {
    return request.getRequestURI(); //do some kind of parsing
}
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