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Ich habe eine einfache Spring-Boot-App, die ich verwende, um eine Verbindung zu einem REST-API und sehen Sie es Antwort. Es ist eine einfache App für das Prototyping. Ich bin jedoch die folgende Fehlermeldung erhalten:Spring Boot Klasse def nicht gefunden Fehler
Exception in thread "main" java.lang.NoClassDefFoundError: [Lcom/crossover/techtrial/java/se/dto/Account;
at com.crossover.techtrial.java.se.TrialApplication.main(TrialApplication.java:25)
Caused by: java.lang.ClassNotFoundException: com.crossover.techtrial.java.se.dto.Account
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 1 more
Ich habe keine Ahnung, warum es auftreten, da ich die Klasse Konto definiert haben:
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
@JsonIgnoreProperties(ignoreUnknown = true)
public class Account
{
private String id;
private MonetaryAmount monetaryAmount;
public Account()
{
}
public String getId()
{
return id;
}
public void setId(String id)
{
this.id = id;
}
public MonetaryAmount getMonetaryAmount()
{
return monetaryAmount;
}
public void setMonetaryAmount(MonetaryAmount monetaryAmount)
{
this.monetaryAmount = monetaryAmount;
}
}
meine Berufung Code:
package com.crossover.techtrial.java.se;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.client.RestTemplate;
import com.crossover.techtrial.java.se.dto.Account;
@SpringBootApplication
public class TrialApplication
{
@Autowired
public static RestTemplate restTemplate;
@Value("${apiforest.baseuri}")
public static String baseURI;
public static void main(String[] args)
{
String url = baseURI + "/paypallets/accounts";
//SpringApplication.run(TrialApplication.class, args);
restTemplate.getForObject(url, Account[].class);
System.out.println(url);
}
}
Ein weiteres Problem ist, dass der Wert für den Schlüssel "apiforest.baseuri", den ich in application.properties definiert habe, nicht abgerufen wird.
Mein application.properties:
spring.jpa.hibernate.ddl-auto=create
spring.datasource.url=jdbc:mysql://localhost:3306/SampleDB
spring.datasource.username=root
spring.datasource.password=admin
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect
management.port = 9001
apiforest.baseuri = https://api-forest/....
read.timeout = 10000
connect.timeout = 10000
Mein RestConfig:
package com.crossover.techtrial.java.se.config;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.client.ClientHttpRequestFactory;
import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
import org.springframework.web.client.RestTemplate;
// To set the configuration parameters like read timeout and connect timeout for Rest Client
@Configuration
public class RestConfig
{
@Bean
public RestTemplate createRestTemplate(final ClientHttpRequestFactory clientHttpRequestFactory)
{
return new RestTemplate(clientHttpRequestFactory);
}
@Bean
public ClientHttpRequestFactory createClientHttpRequestFactory(@Value("${connect.timeout}") final int connectTimeout,
@Value("${read.timeout}") final int readTimeout)
{
HttpComponentsClientHttpRequestFactory factory = new HttpComponentsClientHttpRequestFactory();
factory.setConnectTimeout(connectTimeout);
factory.setReadTimeout(readTimeout);
return factory;
}
}
Mein 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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.crossover.techtrial.java.se</groupId>
<artifactId>trial</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>trial</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.3.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</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-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
Irgendwelche Ideen?
EDIT: Ich änderte meine Berufung Code zu dem, was @Luke vorgeschlagen, indem Sie diese:
@SpringBootApplication
public class TrialApplication
{
@Value("${apiforest.baseuri}")
public static String baseURI;
public static void main(String[] args)
{
ConfigurableApplicationContext run =
SpringApplication.run(TrialApplication.class, args);
RestTemplate restTemplate = run.getBean(RestTemplate.class);
String url = baseURI + "/paypallets/accounts";
restTemplate.getForObject(url, Account[].class);
System.out.println(url);
}
}
Aber nun folgende Ausnahmen erhalte ich von denen noch gefunden ClassdefNot ist:
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'createRestTemplate' defined in class path resource [com/crossover/techtrial/java/se/config/RestConfig.class]: Unsatisfied dependency expressed through method 'createRestTemplate' parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'createClientHttpRequestFactory' defined in class path resource [com/crossover/techtrial/java/se/config/RestConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.http.client.ClientHttpRequestFactory]: Factory method 'createClientHttpRequestFactory' threw exception; nested exception is java.lang.NoClassDefFoundError: org/apache/http/client/HttpClient
at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:749) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:467) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1134) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1028) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:759) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:866) ~[spring-context-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542) ~[spring-context-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) ~[spring-boot-1.4.3.RELEASE.jar:1.4.3.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:761) [spring-boot-1.4.3.RELEASE.jar:1.4.3.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:371) [spring-boot-1.4.3.RELEASE.jar:1.4.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-1.4.3.RELEASE.jar:1.4.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1186) [spring-boot-1.4.3.RELEASE.jar:1.4.3.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1175) [spring-boot-1.4.3.RELEASE.jar:1.4.3.RELEASE]
at com.crossover.techtrial.java.se.TrialApplication.main(TrialApplication.java:21) [classes/:na]
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'createClientHttpRequestFactory' defined in class path resource [com/crossover/techtrial/java/se/config/RestConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.http.client.ClientHttpRequestFactory]: Factory method 'createClientHttpRequestFactory' threw exception; nested exception is java.lang.NoClassDefFoundError: org/apache/http/client/HttpClient
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:599) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1134) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1028) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:513) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:207) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1136) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1064) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:835) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:741) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE]
... 19 common frames omitted
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.http.client.ClientHttpRequestFactory]: Factory method 'createClientHttpRequestFactory' threw exception; nested exception is java.lang.NoClassDefFoundError: org/apache/http/client/HttpClient
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE]
... 32 common frames omitted
Caused by: java.lang.NoClassDefFoundError: org/apache/http/client/HttpClient
at com.crossover.techtrial.java.se.config.RestConfig.createClientHttpRequestFactory(RestConfig.java:25) ~[classes/:na]
at com.crossover.techtrial.java.se.config.RestConfig$$EnhancerBySpringCGLIB$$25eeb443.CGLIB$createClientHttpRequestFactory$1(<generated>) ~[classes/:na]
at com.crossover.techtrial.java.se.config.RestConfig$$EnhancerBySpringCGLIB$$25eeb443$$FastClassBySpringCGLIB$$44b4ec10.invoke(<generated>) ~[classes/:na]
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) ~[spring-core-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:356) ~[spring-context-4.3.5.RELEASE.jar:4.3.5.RELEASE]
at com.crossover.techtrial.java.se.config.RestConfig$$EnhancerBySpringCGLIB$$25eeb443.createClientHttpRequestFactory(<generated>) ~[classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_121]
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_121]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_121]
at java.lang.reflect.Method.invoke(Unknown Source) ~[na:1.8.0_121]
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:162) ~[spring-beans-4.3.5.RELEASE.jar:4.3.5.RELEASE]
... 33 common frames omitted
Caused by: java.lang.ClassNotFoundException: org.apache.http.client.HttpClient
at java.net.URLClassLoader.findClass(Unknown Source) ~[na:1.8.0_121]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[na:1.8.0_121]
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) ~[na:1.8.0_121]
at java.lang.ClassLoader.loadClass(Unknown Source) ~[na:1.8.0_121]
... 44 common frames omitted
Ein Vorschlag zuerst alles entfernen und versuchen, eine einfache Springboot-Anwendung nur mit der Hauptklasse zu starten. Ihre Hauptklasse (eine mit '@ SprinBootApplication' ') ist nicht korrekt. – pvpkiran
Ich habe es sogar versucht, immer noch die Ausnahmen, die ich in Bearbeitung definiert habe. Es macht mich verrückt. Ich weiß nicht, wie ich es beheben soll. Soll ich eine neue Frage stellen? – zhaider
versuchen Sie, diese zu Ihrem pom ' org.apache.httpcomponents Httpclient ' –
pvpkiran