knife4j+springboot3.4異常無法正確展示文檔

更新時間：2025年01月13日 10:01:40 作者：立小言先森

本文主要介紹了knife4j+springboot3.4異常無法正確展示文檔,文中通過示例代碼介紹的非常詳細,對大家的學習或者工作具有一定的參考學習價值,需要的朋友們下面隨著小編來一起學習學習吧

場景復現(xiàn)：

knife4j-openapi3-jakarta-spring-boot-starter版本

<!-- https://mvnrepository.com/artifact/com.github.xiaoymin/knife4j-openapi3-jakarta-spring-boot-starter -->
<dependency>
    <groupId>com.github.xiaoymin</groupId>
    <artifactId>knife4j-openapi3-jakarta-spring-boot-starter</artifactId>
    <version>4.5.0</version>
</dependency>

原來使用springboot3.3.5版本，先升級到3.4.0版本
通過http://ip:port/doc.html訪問接口文檔發(fā)現(xiàn)訪問/v3/api-docs接口時報

Handler dispatch failed: java.lang.NoSuchMethodError: 'void org.springframework.web.method.ControllerAdviceBean.<init>(java.lang.Object)

通過分析異常日志發(fā)現(xiàn)是ControllerAdviceBean類報錯，在springboot3.3.5時spring-web版本是6.1.14，springboot3.4版本是6.2.0版本。

通過springboot全局異常捕獲堆棧信息發(fā)現(xiàn)：

org.springdoc.core.service.GenericResponseService.lambda$getGenericMapResponse$8(GenericResponseService.java:702)

GenericResponseService類是在如下包：

<!-- https://mvnrepository.com/artifact/org.springdoc/springdoc-openapi-starter-common -->
<dependency>
    <groupId>org.springdoc</groupId>
    <artifactId>springdoc-openapi-starter-common</artifactId>
    <version>2.3.0</version>
</dependency>

GenericResponseService類的702行代碼如下(ControllerAdviceBean類使用一個參數的構造函數，但是報異常)：

List<ControllerAdviceInfo> controllerAdviceInfosNotInThisBean = controllerAdviceInfos.stream()
					.filter(controllerAdviceInfo ->
							new ControllerAdviceBean(controllerAdviceInfo.getControllerAdvice()).isApplicableToBeanType(beanType))
					.filter(controllerAdviceInfo -> !beanType.equals(controllerAdviceInfo.getControllerAdvice().getClass()))
					.toList();

spring-web6.1.14版本中ControllerAdviceBean的構造函數：

	public ControllerAdviceBean(Object bean) {
		Assert.notNull(bean, "Bean must not be null");
		this.beanOrName = bean;
		this.isSingleton = true;
		this.resolvedBean = bean;
		this.beanType = ClassUtils.getUserClass(bean.getClass());
		this.beanTypePredicate = createBeanTypePredicate(this.beanType);
		this.beanFactory = null;
	}

spring-web6.2.0版本中ControllerAdviceBean的構造函數：

	public ControllerAdviceBean(String beanName, BeanFactory beanFactory, ControllerAdvice controllerAdvice) {
		Assert.hasText(beanName, "Bean name must contain text");
		Assert.notNull(beanFactory, "BeanFactory must not be null");
		Assert.isTrue(beanFactory.containsBean(beanName), () -> "BeanFactory [" + beanFactory +
				"] does not contain specified controller advice bean '" + beanName + "'");
		Assert.notNull(controllerAdvice, "ControllerAdvice must not be null");

		this.beanName = beanName;
		this.isSingleton = beanFactory.isSingleton(beanName);
		this.beanType = getBeanType(beanName, beanFactory);
		this.beanTypePredicate = createBeanTypePredicate(controllerAdvice);
		this.beanFactory = beanFactory;
	}

此類中的構造函數已經變更為4個，已經不存在一個參數的構造函數了。

springdoc-openapi-starter-common文檔當前已經升級到2.7.0版本

<!-- https://mvnrepository.com/artifact/org.springdoc/springdoc-openapi-starter-common -->
<dependency>
    <groupId>org.springdoc</groupId>
    <artifactId>springdoc-openapi-starter-common</artifactId>
    <version>2.7.0</version>
</dependency>

結論：期待knife4j-openapi3-jakarta-spring-boot-starter早日升級，兼容最新版本的spring;

開源SDK:https://github.com/mingyang66/spring-parent

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