创建在类路径资源中定义的名为“entityManagerFactory”的bean时出错：创建名为“entityManagerFactory”的bean时出错

Question

我创建了一个Spring App，我使用hibernate进行逆向工程，从MySQL Db生成java类。之后，我想使用这个类来实现存储库，但我有这个问题：

组织。springframework。豆。工厂BeanCreationException：创建名为“entityManagerFactory”的bean时出错，该bean在类路径资源[org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]中定义：调用init方法失败；嵌套异常为java。lang.NoClassDefFoundError:javax/xml/bind/JAXBException

这是我的身材。gradle文件

js lang-js prettyprint-override">plugins {
    id 'org.springframework.boot' version '2.4.4'
    id 'io.spring.dependency-management' version '1.0.11.RELEASE'
    id 'java'
    
    id "org.hibernate.gradle.tools" version "1.2.5"
        
}

group = 'it.unisalento'
version = '0.0.1-SNAPSHOT'
sourceCompatibility = '1.8'

repositories {
    mavenCentral()
}

dependencies {

    implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
    developmentOnly 'org.springframework.boot:spring-boot-devtools'
    runtimeOnly 'mysql:mysql-connector-java'
    testImplementation 'org.springframework.boot:spring-boot-starter-test'
    
    implementation 'org.springframework.boot:spring-boot-starter-thymeleaf'
    implementation 'org.springframework.boot:spring-boot-starter-web'
    implementation 'org.springframework.boot:spring-boot-starter-validation'
    implementation 'org.javassist:javassist:3.27.0-GA'
    
    
    compile 'org.hibernate:hibernate-core:5.2.11.Final'
    compile 'org.hibernate:hibernate-entitymanager:5.2.11.Final'
    compile 'mysql:mysql-connector-java'
    compile 'org.apache.commons:commons-dbcp2:2.0.1'
    
    
}

test {
    useJUnitPlatform()
}

import org.hibernate.gradle.tools.*

 

database{
    catalog =  ["myalertdb": new Schema()]
    basePackage = "it.unisalento.myalertapp.app.domain"
    port = 3306
    url = "jdbc:mysql://127.0.0.1/myalertdb?serverTimezone=GMT"
    user = "root"
    password = "database123"
    dialect = "org.hibernate.dialect.MySQLDialect"
    driver = "com.mysql.cj.jdbc.Driver"
}

Answer 1

看到这一点的一个原因是您正在java 9或更高版本上运行。然后您需要将jaxb-api.jar添加到您的类路径中。如果您正在运行maven，您可以将以下内容添加到您的pom.xml：

<dependency>
    <groupId>javax.xml.bind</groupId>
     <artifactId>jaxb-api</artifactId>
    <version>2.3.1</version>
 </dependency>

请参见https://www.jesperdj.com/2018/09/30/jaxb-on-java-9-10-11-and-beyond/有关此的更多详细信息。