Cannot invoke "org.springframework.web.servlet.mvc.condition.PatternsRequestCondition.getPatterns()" because "this.condition" is null

This problem is caused by the new PathPatternParser introduced in Spring Boot 2.6. There are two ways to resolve:

As suggested by @gsan in the comment, add following in your application.yml or application.properties:

spring.mvc.pathmatch.matching-strategy=ant_path_matcher

OR

Add the following bean in your config class:

import org.springframework.boot.actuate.autoconfigure.endpoint.web.CorsEndpointProperties;
import org.springframework.boot.actuate.autoconfigure.endpoint.web.WebEndpointProperties;
import org.springframework.boot.actuate.autoconfigure.web.server.ManagementPortType;
import org.springframework.boot.actuate.endpoint.ExposableEndpoint;
import org.springframework.boot.actuate.endpoint.web.EndpointLinksResolver;
import org.springframework.boot.actuate.endpoint.web.EndpointMapping;
import org.springframework.boot.actuate.endpoint.web.EndpointMediaTypes;
import org.springframework.boot.actuate.endpoint.web.ExposableWebEndpoint;
import org.springframework.boot.actuate.endpoint.web.WebEndpointsSupplier;
import org.springframework.boot.actuate.endpoint.web.annotation.ControllerEndpointsSupplier;
import org.springframework.boot.actuate.endpoint.web.annotation.ServletEndpointsSupplier;
import org.springframework.boot.actuate.endpoint.web.servlet.WebMvcEndpointHandlerMapping;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.env.Environment;
import org.springframework.util.StringUtils;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

@Bean
public WebMvcEndpointHandlerMapping webEndpointServletHandlerMapping(WebEndpointsSupplier webEndpointsSupplier,
        ServletEndpointsSupplier servletEndpointsSupplier, ControllerEndpointsSupplier controllerEndpointsSupplier,
        EndpointMediaTypes endpointMediaTypes, CorsEndpointProperties corsProperties,
        WebEndpointProperties webEndpointProperties, Environment environment) {
    List<ExposableEndpoint<?>> allEndpoints = new ArrayList();
    Collection<ExposableWebEndpoint> webEndpoints = webEndpointsSupplier.getEndpoints();
    allEndpoints.addAll(webEndpoints);
    allEndpoints.addAll(servletEndpointsSupplier.getEndpoints());
    allEndpoints.addAll(controllerEndpointsSupplier.getEndpoints());
    String basePath = webEndpointProperties.getBasePath();
    EndpointMapping endpointMapping = new EndpointMapping(basePath);
    boolean shouldRegisterLinksMapping = this.shouldRegisterLinksMapping(webEndpointProperties, environment,
            basePath);
    return new WebMvcEndpointHandlerMapping(endpointMapping, webEndpoints, endpointMediaTypes,
            corsProperties.toCorsConfiguration(), new EndpointLinksResolver(allEndpoints, basePath),
            shouldRegisterLinksMapping, null);
}

private boolean shouldRegisterLinksMapping(WebEndpointProperties webEndpointProperties, Environment environment,
        String basePath) {
    return webEndpointProperties.getDiscovery().isEnabled() && (StringUtils.hasText(basePath)
        || ManagementPortType.get(environment).equals(ManagementPortType.DIFFERENT));
}

Reference: Spring Boot 2.6 + Swagger startup exception: because "this.condition" is null

Well, the answer mentioned by @Lyncean Patel is not 100% correct because there is no OR in fixing this. From this github issue discussion thread, the way to fix it to do both:

1. set spring.mvc.pathmatch.matching-strategy: ant_path_matcher in application.properties
2. add this bean

@Bean
public WebMvcEndpointHandlerMapping webEndpointServletHandlerMapping(WebEndpointsSupplier webEndpointsSupplier, ServletEndpointsSupplier servletEndpointsSupplier, ControllerEndpointsSupplier controllerEndpointsSupplier, EndpointMediaTypes endpointMediaTypes, CorsEndpointProperties corsProperties, WebEndpointProperties webEndpointProperties, Environment environment) {
        List<ExposableEndpoint<?>> allEndpoints = new ArrayList();
        Collection<ExposableWebEndpoint> webEndpoints = webEndpointsSupplier.getEndpoints();
        allEndpoints.addAll(webEndpoints);
        allEndpoints.addAll(servletEndpointsSupplier.getEndpoints());
        allEndpoints.addAll(controllerEndpointsSupplier.getEndpoints());
        String basePath = webEndpointProperties.getBasePath();
        EndpointMapping endpointMapping = new EndpointMapping(basePath);
        boolean shouldRegisterLinksMapping = this.shouldRegisterLinksMapping(webEndpointProperties, environment, basePath);
        return new WebMvcEndpointHandlerMapping(endpointMapping, webEndpoints, endpointMediaTypes, corsProperties.toCorsConfiguration(), new EndpointLinksResolver(allEndpoints, basePath), shouldRegisterLinksMapping, null);
    }


private boolean shouldRegisterLinksMapping(WebEndpointProperties webEndpointProperties, Environment environment, String basePath) {
        return webEndpointProperties.getDiscovery().isEnabled() && (StringUtils.hasText(basePath) || ManagementPortType.get(environment).equals(ManagementPortType.DIFFERENT));
    }

I had the same issue and it worked by adding configuration in application.yml AND creating the bean in my SwaggerConfig class.

• Springboot 2.7.3
• Java 17
• springfox-boot-starter 3.0.0

When using springdoc-openapi-ui 1.6.11 you only need to add the application.yml configuration, as suggested by @Lyncean Patel.

I solved it. I used spring boot 2.6.12 and swagger3.0 This is the maven configuration：

 <dependency>
        <groupId>io.springfox</groupId>
        <artifactId>springfox-swagger-ui</artifactId>
        <version>3.0.0</version>
    </dependency>
    <dependency>
        <groupId>io.springfox</groupId>
        <artifactId>springfox-swagger2</artifactId>
        <version>3.0.0</version>
    </dependency>

then you should Override WebMvcRequestHandlerProvider.java (Copy and override constructors to filter out abnormal ones)

 this.handlerMappings = handlerMappings.stream().filter(mapping -> mapping.getPatternParser() == null)
            .collect(Collectors.toList());

Everything else stays the same You need to create a new package in your project home directory with the same name as the class ：springfox.documentation.spring.web.plugins

good luck！

Consider migration to springdoc

Migration is such a smooth process and it is unlikely that you encounter bugs like that.

I solved all these issues by removing all springfox dependencies and adding implementation 'org.springdoc:springdoc-openapi-ui:1.6.12'to my build.gradle file (if you use maven add the corresponding elements) then my SecurityFilterChain bean will look like

...
@Bean
    public SecurityFilterChain filterChain(HttpSecurity http) throws Exception {
        http.cors().and()
                .authorizeRequests().antMatchers("/actuator/**").permitAll()
                .and().authorizeRequests().antMatchers("/swagger-ui/**").permitAll()
                .and().authorizeRequests().antMatchers("/v3/api-docs/**").permitAll();
        return http.build();
}
...

No extra dependencies or configuration is required.

I have used ->implementation("org.apache.commons:commons-lang3:3.12.0") this dependency in my kts file and there is no use of it for me, after removing this dependency this error got resolved . dependency : Apache Tomcat

adding below property worked for me as well.

spring.mvc.pathmatch.matching-strategy: ant_path_matcher

But it didn't work in another project where spring-actuator dependency was present, so if you're wondering why it's not working, perhaps it's due to actuator's presence. So, I had to drop swagger.

I solved it with using spring parent "version 2.6.12" and swagger "3.0.0" version. these are maven configuration.

Note: this helped you when you will face "this.condition.isNull" error.

Above suggested solutions works well i.e to add the bean in config class and adding the property in the application.properties or application.yml . But just to rectify the accepted value for the property added in application.properties or application.yml , should be

spring.mvc.pathmatch.matching-strategy=ANT_PATH_MATCHER

Below mentioned is not the accepted value .

spring.mvc.pathmatch.matching-strategy= ant_path_matcher

May be if you are wondering , why your properties file or yml file is showing error .

I am using springboot 3.2.5 and springfox-boot-starter 3.0.0 and compile well just adding

spring.mvc.pathmatch.matching-strategy=ant_path_matcher