嵌套異常是java.lang.NoClassDefFoundError：org/springframework/data/mapping/IdentifierAccessor

我嘗試使用Spring + JPA + PostgreSQL。嵌套異常是java.lang.NoClassDefFoundError：org/springframework/data/mapping/IdentifierAccessor

當我單擊「調試」我得到異常：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jpaMappingContext': Invocation of init method failed; nested exception is java.lang.NoClassDefFoundError: org/springframework/data/mapping/IdentifierAccessor

結構的設計方案是

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application.properties

spring.datasource.url = jdbc:postgresql://localhost:5432/gastos 
spring.datasource.username = postgres 
spring.datasource.password = ******* 

spring.jpa.show-sql = true 

spring.jpa.hibernate.ddl-auto = update 

spring.jpa.hibernate.naming-strategy = org.hibernate.cfg.ImprovedNamingStrategy 

spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.PostgreSQL9Dialect

Application.java

import org.springframework.boot.SpringApplication; 
import org.springframework.boot.autoconfigure.SpringBootApplication; 
import org.springframework.context.annotation.ComponentScan; 

@ComponentScan 
@SpringBootApplication 
public class Application { 
     public static void main(String[] args) { 
      SpringApplication.run(Application.class, args); 
     } 
}

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 http://maven.apache.org/xsd/maven-4.0.0.xsd"> 
    <modelVersion>4.0.0</modelVersion> 

    <groupId>org.springframework</groupId> 
    <artifactId>gastos4</artifactId> 
    <version>0.1.0</version> 

    <parent> 
     <groupId>org.springframework.boot</groupId> 
     <artifactId>spring-boot-starter-parent</artifactId> 
     <version>1.2.4.RELEASE</version> 
    </parent> 

    <dependencies> 
     <dependency> 
      <groupId>org.springframework.boot</groupId> 
      <artifactId>spring-boot-starter-web</artifactId> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework.data</groupId> 
      <artifactId>spring-data-jpa</artifactId> 
      <version>1.8.0.RELEASE</version> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework.boot</groupId> 
      <artifactId>spring-boot-starter-data-jpa</artifactId> 
      <version>1.2.4.RELEASE</version> 
     </dependency> 
     <dependency> 
      <groupId>org.postgresql</groupId> 
      <artifactId>postgresql</artifactId> 
      <version>9.4-1201-jdbc41</version> 
     </dependency> 
    </dependencies> 

    <properties> 
     <java.version>1.8</java.version> 
    </properties> 


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

</project>

我沒有找到在網絡的解決方案。我究竟做錯了什麼？

來源

2015-06-24 Cristhian Boujon

不在CLASSPATH中放置了一些依賴項，這就是NoClassDefFoundError所說的......所以看看它引用的類以及它的依賴關係 –

@NeilStockton對不起，你能告訴我怎麼做？我在Spring和Java世界很新手。 –

嘗試添加彈簧數據共享核心到您的POM

<dependency> 
<groupId>org.springframework.data</groupId> 
<artifactId>spring-data-commons-core</artifactId> 
<version>1.0.0.RELEASE</version> 
</dependency>

來源

2015-06-24 02:35:11 KDP

保持錯誤 –

IdentifierAccessor - 請參閱 https://github.com/spring-projects/spring-data-commons/tree/master/src/main/java/org/springframework/data/mapping – KDP

我加了spring -data-commons-1.9.2.RELEASE和我得到一個新的錯誤，說'java.lang.NoSuchMethodError：org.springframework.data.repository.config.AnnotationRepositoryConfigurationSource。（Lorg/springframework/core/type/AnnotationMetadata; Ljava/lang/Class; Lorg/springframework/core/io/ResourceLoader; Lorg/springframework/core/env/Environment;）V' –

我有同樣的問題，奇怪的是我用替換依賴彈簧數據的JPA解決了這個問題：

<dependency> 
    <groupId>org.springframework</groupId> 
    <artifactId>spring-orm</artifactId> 
    <version>${spring.version}</version> 
</dependency>

來源

2015-07-31 20:27:58

嵌套異常是java.lang.NoClassDefFoundError：org/springframework/data/mapping/IdentifierAccessor

回答

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