[英]Why i am getting an error Factory method 'halLinkDisocoverer' threw exception in springboot?
嗨,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
<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
运行应用程序时,它给了我错误
org.springframework.beans.factory.BeanCreationException:在类路径资源[org/springframework/hateoas/mediatype/hal/HalMediaTypeConfiguration.class]中定义名为“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 at 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] at 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.SpringAp plication.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.movie.db.KotakKantorMovieDB.KotakKantorMovieDbApplication.main(KotakKantorMovieDbApplication.java:10) ~[classes!/:0.0.1-快照] 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-SN APSHOT] 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 at 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] ... 27 个常见框架被省略 引起:java.lang.NoClassDefFoundError: com/jayway/jsonpath/PathNotFoundException at 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$$EnhancerBySpringCGLIB$$a3e51 c0b$$FastClassBySpringCGLIB$$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.springfra mework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.2.3.RELEASE.jar!/:5.2.3.RELEASE] ... 28个常用帧省略 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,当我添加该依赖项时,我的应用程序给了我这个错误。 这是我完整的 pom.xml :
<?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
?
我试图删除:
<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
我来自udemy。 我遇到了同样的错误,作者建议更换
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-rest-hal-browser</artifactId>
<version>3.3.6.RELEASE</version>
</dependency>
和
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-rest-hal-explorer</artifactId>
</dependency>
它适用于我的情况。
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