SpringBoot2.6 + SpringSecurity + Swagger2升级报错处理

大大源码 • 2023年4月17日 pm11:21 • 未分类

问题描述

这两天把项目用到的SpringBoot和Swagger2都做了版本升级，SpringBoot升级到2.7.3，Swagger2升级到了3.0。
maven如下

			<dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>2.7.3</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>io.springfox</groupId>
                <artifactId>springfox-boot-starter</artifactId>
                <version>3.0.0</version>
            </dependency>

这里主要是将原来swagger的依赖由springfox-swagger2 和 springfox-swagger-ui 替换为 springfox-boot-starter
在重新编译后有以下报错:

org.springframework.context.ApplicationContextException: Failed to start bean 'documentationPluginsBootstrapper'; nested exception is java.lang.NullPointerException
	at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:181) ~[spring-context-5.3.22.jar:5.3.22]
	at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:54) ~[spring-context-5.3.22.jar:5.3.22]
	at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:356) ~[spring-context-5.3.22.jar:5.3.22]
	at java.base/java.lang.Iterable.forEach(Iterable.java:75) ~[na:na]
	at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:155) ~[spring-context-5.3.22.jar:5.3.22]
	at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:123) ~[spring-context-5.3.22.jar:5.3.22]
	at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:935) ~[spring-context-5.3.22.jar:5.3.22]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:586) ~[spring-context-5.3.22.jar:5.3.22]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:147) ~[spring-boot-2.7.3.jar:2.7.3]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:734) ~[spring-boot-2.7.3.jar:2.7.3]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:408) ~[spring-boot-2.7.3.jar:2.7.3]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:308) ~[spring-boot-2.7.3.jar:2.7.3]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1306) ~[spring-boot-2.7.3.jar:2.7.3]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1295) ~[spring-boot-2.7.3.jar:2.7.3]
	at com.dmt.systemManagement.SystemManagementApplication.main(SystemManagementApplication.java:13) ~[classes/:na]

据: 博主@Fisher3652所说，是因为：
在SpringBoot2.6之后，Spring MVC 处理程序映射匹配请求路径的默认策略已从 AntPathMatcher 更改为PathPatternParser。如果需要切换为AntPathMatcher，官方给出的方法是配置spring.mvc.pathmatch.matching-strategy=ant_path_matcher

但是本人按照此博主的配置依然没有解决问题。

解决方法

在经过一系列折腾后，最终解决，方法如下：

1、swagger配置文件

在常规的Docket配置之外，需要注入BeanPostProcessor的bean。
完整config代码如下：

import org.springframework.beans.BeansException;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.util.ReflectionUtils;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.mvc.method.RequestMappingInfoHandlerMapping;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.oas.annotations.EnableOpenApi;
import springfox.documentation.service.*;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.spring.web.plugins.WebFluxRequestHandlerProvider;
import springfox.documentation.spring.web.plugins.WebMvcRequestHandlerProvider;

import java.lang.reflect.Field;
import java.util.List;
import java.util.stream.Collectors;

/**
 * @Author Ayuski
 * @Description:
 * @Create: 2022/9/15 5:17 PM
 */
@Configuration
@EnableOpenApi
@EnableWebMvc
public class SwaggerConfig {


    @Bean
    public Docket productApi() {
        return new Docket(DocumentationType.OAS_30)
                .apiInfo(apiInfo())
                .enable(true)
                .groupName("组名")
                .select()
                .apis(RequestHandlerSelectors.basePackage("com.XXX"))
                //.apis(RequestHandlerSelectors.withMethodAnnotation(ApiOperation.class))  //添加ApiOperiation注解的被扫描
                .paths(PathSelectors.any())
                .build();

    }

    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title("titel").description("xxxx文档")
                .contact(new Contact("ayuski", "http://www.yourwebsite.com", "yourmail@mail.com"))
                .version("1.0").build();
    }

    @Bean
    public static BeanPostProcessor springfoxHandlerProviderBeanPostProcessor() {
        return new BeanPostProcessor() {

            @Override
            public Object postProcessAfterInitialization(Object bean, String beanName) throws BeansException {
                if (bean instanceof WebMvcRequestHandlerProvider || bean instanceof WebFluxRequestHandlerProvider) {
                    customizeSpringfoxHandlerMappings(getHandlerMappings(bean));
                }
                return bean;
            }

            private <T extends RequestMappingInfoHandlerMapping> void customizeSpringfoxHandlerMappings(List<T> mappings) {
                List<T> copy = mappings.stream()
                        .filter(mapping -> mapping.getPatternParser() == null)
                        .collect(Collectors.toList());
                mappings.clear();
                mappings.addAll(copy);
            }

            @SuppressWarnings("unchecked")
            private List<RequestMappingInfoHandlerMapping> getHandlerMappings(Object bean) {
                try {
                    Field field = ReflectionUtils.findField(bean.getClass(), "handlerMappings");
                    field.setAccessible(true);
                    return (List<RequestMappingInfoHandlerMapping>) field.get(bean);
                } catch (IllegalArgumentException | IllegalAccessException e) {
                    throw new IllegalStateException(e);
                }
            }
        };
    }
}

注意几点：
1：@EnableSwagger2 变为 @EnableOpenApi
2：加上 @EnableWebMvc 注解
3：DocumentationType.SWAGGER_2 改为 DocumentationType.OAS_30
问题迎刃而解！！！

2、SpringSecurity放行

因项目引入了SpringSecurity,还需要对swagger的路径放行。
完整代码如下：

package com.dmt.common.config;

import com.dmt.common.filter.JwtAuthenticationTokenFilter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityCustomizer;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.AuthenticationEntryPoint;
import org.springframework.security.web.SecurityFilterChain;
import org.springframework.security.web.access.AccessDeniedHandler;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

/**
 * @Author Ayuski
 * @Description:
 * @Create: 2022/9/23 11:05 AM
 */
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class WebSecurity {
    @Autowired
    private JwtAuthenticationTokenFilter jwtAuthenticationTokenFilter;
    @Autowired
    private AuthenticationEntryPoint authenticationEntryPoint;
    @Autowired
    private AccessDeniedHandler accessDeniedHandler;

    private  static  final  String[]  AUTH_WHITELIST  =  {
            // -- swagger ui
            "/swagger-resources/**",
            "/swagger-ui.html",
            "/swagger-ui/",
            "/v3/api-docs",
            "/swagger-ui/**"
            "/webjars/**",
            "/images/**",
            "/js/**",
            "/webjars/**",
            
    };
    @Bean
    public SecurityFilterChain configure(HttpSecurity http) throws Exception {

        http
                //关闭csrf
                .csrf().disable()
                //不通过Session获取SecurityContext
                .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)
                .and()
                .authorizeRequests()
                .antMatchers(AUTH_WHITELIST).permitAll()
                //对于登录接口允许匿名访问
                .antMatchers("/login").anonymous()
                //除上面外的所有请求全部需要鉴权认证
                .anyRequest().authenticated().and().authenticationManager(getAuthenticationManager(http));
        //添加过滤器
        http.addFilterBefore(jwtAuthenticationTokenFilter, UsernamePasswordAuthenticationFilter.class);
        //配置异常处理
        http.exceptionHandling()
                .authenticationEntryPoint(authenticationEntryPoint)
                .accessDeniedHandler(accessDeniedHandler);
        http.cors();
        return http.build();
    }

    @Bean
    public PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }

    @Bean
    public AuthenticationManager getAuthenticationManager(HttpSecurity http) throws Exception {
        AuthenticationManagerBuilder authenticationManagerBuilder = http.getSharedObject(AuthenticationManagerBuilder.class);
        AuthenticationManager authenticationManager = authenticationManagerBuilder.build();
        return authenticationManager;
    }
}

主要是把

 			"/swagger-resources/**",
            "/swagger-ui.html",
            "/swagger-ui/",
            "/v3/api-docs",

这几个路径放行。
如果有用swagger 2.* 版本的小伙伴，需要把 /v3/api-docs 变为 /v2/api-docs

当然如果以上不放行或者部分放行的话，会出现Unable to render this definition错误
在这里插入图片描述
配置完成后，浏览器输入 http://localhost:8080/swagger-ui/index.html 进入页面

THE END

Error:(1, 0) Your project path contains non-ASCII characters. This will most likely cause the build

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SpringBoot2.6 + SpringSecurity + Swagger2升级报错处理

问题描述

解决方法

1、swagger配置文件

2、SpringSecurity放行