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为什么我在 springboot 中收到错误工厂方法“halLinkDisocoverer"抛出异常?

本文介绍了为什么我在 springboot 中收到错误工厂方法“halLinkDisocoverer"抛出异常?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我是 springboot 的新手，我尝试用它创建 RESTful API，当我用它创建控制器时它已经可以工作了，但是当我尝试在 pom.xml 中添加这一行时

Hi i am new at springboot, i trying to create RESTful API with it, it's already work when i create controller with it, but when i trying to add this line at pom.xml

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-rest</artifactId>
</dependency>

当我尝试使用 java -jar target/gs-accessing-mongodb-data-rest-0.1.0.jar

org.springframework.beans.factory.BeanCreationException:在类路径资源[org/springframework/hateoas/mediatype/hal/HalMediaTypeConfiguration.class]中定义名称为halLinkDisocoverer"的bean创建错误:通过工厂方法的Bean实例化失败；嵌套异常是 org.springframework.beans.BeanInstantiationException:无法实例化 [org.springframework.hateoas.client.LinkDiscoverer]:工厂方法halLinkDisocoverer"抛出异常；嵌套异常是 java.lang.NoClassDefFoundError: com/jayway/jsonpath/PathNotFoundException在 org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:656) ~[spring-beans-5.2.3.RELEASE.jar!/:5.2.3.RELEASE]在 org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:484) ~[spring-beans-5.2.3.RELEASE.jar!/:5.2.3.RELEASE]在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1338) ~[spring-beans-5.2.3.RELEASE.jar!/:5.2.3.RELEASE]在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1177) ~[spring-beans-5.2.3.RELEASE.jar!/:5.2.3.RELEASE]在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:557) ~[spring-beans-5.2.3.RELEASE.jar!/:5.2.3.RELEASE]在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) ~[spring-beans-5.2.3.RELEASE.jar!/:5.2.3.RELEASE]在 org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) ~[spring-beans-5.2.3.RELEASE.jar!/:5.2.3.RELEASE]在 org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.2.3.RELEASE.jar!/:5.2.3.RELEASE]在 org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) ~[spring-beans-5.2.3.RELEASE.jar!/:5.2.3.RELEASE]在 org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.3.RELEASE.jar!/:5.2.3.RELEASE]在 org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:879) ~[spring-beans-5.2.3.RELEASE.jar!/:5.2.3.RELEASE]在 org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) ~[spring-context-5.2.3.RELEASE.jar!/:5.2.3.RELEASE]在 org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) ~[spring-context-5.2.3.RELEASE.jar!/:5.2.3.RELEASE]在 org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) ~[spring-boot-2.2.3.RELEASE.jar!/:2.2.3.RELEASE]在 org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) ~[spring-boot-2.2.3.RELEASE.jar!/:2.2.3.RELEASE]在 org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) ~[spring-boot-2.2.3.RELEASE.jar!/:2.2.3.RELEASE]在 org.springframework.boot.SpringApplication.run(SpringApplication.java:315) ~[spring-boot-2.2.3.RELEASE.jar!/:2.2.3.RELEASE]在 org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) ~[spring-boot-2.2.3.RELEASE.jar!/:2.2.3.RELEASE]在 org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) ~[spring-boot-2.2.3.RELEASE.jar!/:2.2.3.RELEASE]在 com.movi​​e.db.KotakKantorMovieDB.KotakKantorMovieDbApplication.main(KotakKantorMovieDbApplication.java:10) ~[classes!/:0.0.1-SNAPSHOT]在 java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]在 java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]在 java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]在 java.base/java.lang.reflect.Method.invoke(Method.java:567) ~[na:na]在 org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48) ~[KotakKantorMovieDB-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]在 org.springframework.boot.loader.Launcher.launch(Launcher.java:87) ~[KotakKantorMovieDB-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]在 org.springframework.boot.loader.Launcher.launch(Launcher.java:51) ~[KotakKantorMovieDB-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]在 org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:52) ~[KotakKantorMovieDB-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]引起:org.springframework.beans.BeanInstantiationException:无法实例化[org.springframework.hateoas.client.LinkDiscoverer]:工厂方法'halLinkDisocoverer'抛出异常；嵌套异常是 java.lang.NoClassDefFoundError: com/jayway/jsonpath/PathNotFoundException在 org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185) ~[spring-beans-5.2.3.RELEASE.jar!/:5.2.3.RELEASE]在 org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:651) ~[spring-beans-5.2.3.RELEASE.jar!/:5.2.3.RELEASE]...省略了27个常用帧引起:java.lang.NoClassDefFoundError:com/jayway/jsonpath/PathNotFoundException在 org.springframework.hateoas.mediatype.hal.HalMediaTypeConfiguration.halLinkDisocoverer(HalMediaTypeConfiguration.java:65) ~[spring-hateoas-1.0.3.RELEASE.jar!/:1.0.3.RELEASE]在 org.springframework.hateoas.mediatype.hal.HalMediaTypeConfiguration$$EnhancerBySpringCGLIB$$a3e51c0b.CGLIB$halLinkDisocoverer$2() ~[spring-hateoas-1.0.3.RELEASE.jar!/:1.0.3.RELEASE]在 org.springframework.hateoas.mediatype.hal.HalMediaTypeConfiguration$$EnhancerBySpringCGLIB$$a3e51c0b$$FastClassBySpringCGLIB$$bb4bacfd.invoke() ~[spring-hateoas-1.0.3.RELEASE.jar!/:1.0.3.RELEASE]在 org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244) ~[spring-core-5.2.3.RELEASE.jar!/:5.2.3.RELEASE]在 org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:363) ~[spring-context-5.2.3.RELEASE.jar!/:5.2.3.RELEASE]在 org.springframework.hateoas.mediatype.hal.HalMediaTypeConfiguration$$EnhancerBySpringCGLIB$$a3e51c0b.halLinkDisocoverer() ~[spring-hateoas-1.0.3.RELEASE.jar!/:1.0.3.RELEASE]在 java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]在 java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]在 java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]在 java.base/java.lang.reflect.Method.invoke(Method.java:567) ~[na:na]在 org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.2.3.RELEASE.jar!/:5.2.3.RELEASE]...省略了28个常用帧引起:java.lang.ClassNotFoundException:com.jayway.jsonpath.PathNotFoundException在 java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:436) ~[na:na]在 java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:588) ~[na:na]在 org.springframework.boot.loader.LaunchedURLClassLoader.loadClass(LaunchedURLClassLoader.java:92) ~[KotakKantorMovieDB-0.0.1-SNAPSHOT.jar:0.0.1-SNAPSHOT]在 java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521) ~[na:na]

我没有对它做任何事情，当我只是添加那个依赖项时，我的应用程序给了我这个错误.这是我完整的 pom.xml :

i haven't do anything with it, when i just add that dependency, my apps give me this error. Here is my complete pom.xml :

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.3.RELEASE</version>
        <relativePath/>
        <!-- lookup parent from repository -->
    </parent>
    <groupId>com.movie.db</groupId>
    <artifactId>KotakKantorMovieDB</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>KotakKantorMovieDB</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>13</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-rest</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <optional>true</optional>
        </dependency>

        <dependency>
            <groupId>com.jayway.jsonpath</groupId>
            <artifactId>json-path</artifactId>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-mongodb</artifactId>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

这是我的控制器:

package com.movie.db.KotakKantorMovieDB.controllers;

import com.movie.db.KotakKantorMovieDB.models.Customer;
import com.movie.db.KotakKantorMovieDB.repository.CustomerRepository;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

@RestController
public class CustomerController {

  @Autowired
  private CustomerRepository repository;

  @GetMapping("/customer")
  public Customer findCustomer() {
    return repository.findByFirstName("cactuspot");
  }

  @PostMapping("/addcustomer")
  public Customer addCustomer(@RequestBody Customer newCustomer ) {
    return repository.save(newCustomer);
  }

}

这是我的模型:

package com.movie.db.KotakKantorMovieDB.models;

import org.springframework.data.annotation.Id;

public class Customer {
    @Id
    public String id;

    public String firstName;
    public String lastName;

    public String getFirstName() {
        return firstName;
    }

    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }

    public String getLastName() {
        return lastName;
    }

    public void setLastName(String lastName) {
        this.lastName = lastName;
    }

}

这是我的存储库:

package com.movie.db.KotakKantorMovieDB.repository;

import java.util.List;

import com.movie.db.KotakKantorMovieDB.models.Customer;

import org.springframework.data.mongodb.repository.MongoRepository;

public interface CustomerRepository extends MongoRepository<Customer, String> {

    public Customer findByFirstName(String firstName);
    public List<Customer> findByLastName(String lastName);

}

我在这里错过了什么?我是否有一些我不应该使用的依赖项，我添加了 spring-boot-starter-data-rest?

what did i missed here? i is there some dependency that i shouldn't use whtn i add spring-boot-starter-data-rest?

推荐答案

我正在尝试删除 :

<dependency>
            <groupId>com.jayway.jsonpath</groupId>
            <artifactId>json-path</artifactId>
            <scope>test</scope>
</dependency>

这个依赖项，它解决了错误，我不知道为什么这个依赖项会导致错误，我不知道为什么需要这个依赖项，我运行我的应用程序并且它在没有这个依赖项的情况下工作正常.也许与 HATEOAS 有关系.如果有人可以向我解释，我会接受它作为答案

this dependency, and it solved the error, i dunno why this dependency cause the error, and i dunno why this dependency is needed, i run my apps and it just work fine without this dependency. maybe there is something to do with HATEOAS. If somebody can explain it to me, i will accept it as an answer

这篇关于为什么我在 springboot 中收到错误工厂方法“halLinkDisocoverer"抛出异常?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！

11-01 10:11
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