由于java.lang.IllegalStateException:找不到合适的默认ClientHttpConnector，无法构造Spring webClient
由于java.lang.IllegalStateException:找不到合适的默认ClientHttpConnector，无法构造Spring webClient
提问于 2020-07-16 18:50:08
我想在我的服务类中使用特定的WebClient。在构造它的时候，我得到了这个异常：
它看起来像是一个依赖问题，但一个好的旧的干净安装不会改变任何事情。
我需要在我的配置中手动指定Bean吗？
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [com.***.Client]: Constructor threw exception; nested exception is java.lang.IllegalStateException: No suitable default ClientHttpConnector found
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:213)
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:117)
at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:310)
... 122 more
Caused by: java.lang.IllegalStateException: No suitable default ClientHttpConnector found
at org.springframework.web.reactive.function.client.DefaultWebClientBuilder.getOrInitConnector(DefaultWebClientBuilder.java:266)
at org.springframework.web.reactive.function.client.DefaultWebClientBuilder.build(DefaultWebClientBuilder.java:244)
at com.***.Client.<init>(Client.kt:35)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at kotlin.reflect.jvm.internal.calls.CallerImpl$Constructor.call(CallerImpl.kt:41)
at kotlin.reflect.jvm.internal.KCallableImpl.call(KCallableImpl.kt:106)
at kotlin.reflect.jvm.internal.KCallableImpl.callDefaultMethod$kotlin_reflection(KCallableImpl.kt:152)
at kotlin.reflect.jvm.internal.KCallableImpl.callBy(KCallableImpl.kt:110)
at org.springframework.beans.BeanUtils$KotlinDelegate.instantiateClass(BeanUtils.java:788)
at org.springframework.beans.BeanUtils.instantiateClass(BeanUtils.java:185)我的类很简单：
@Service
class Client {
private val webClient = WebClient.builder()
.baseUrl("https://****.com/")
.defaultHeader(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE)
.build()
}在pom.xml文件中：
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-mail</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.ws</groupId>
<artifactId>spring-ws-core</artifactId>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webflux</artifactId>
</dependency>回答 2
Stack Overflow用户
回答已采纳
发布于 2020-07-16 22:11:11
我发现了问题:原来netty依赖项丢失了，因为我导入了具有WebClient但没有其余部分的maven工件……
替换：
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webflux</artifactId>
</dependency>通过以下方式：
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-webflux</artifactId>
</dependency>解决了它。
Stack Overflow用户
发布于 2021-05-11 16:05:59
作为Léo Schenider答案的替代，你不需要用spring-boot-starter-webflux替换spring-webflux (这增加了一些你不需要的额外依赖项)，你只需要包括：
<dependency>
<groupId>io.projectreactor.netty</groupId>
<artifactId>reactor-netty-http</artifactId>
</dependency>并让spring-webflux保持不变。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/62933054
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