IllegalArgumentException:必须至少存在一个JPA元模型

问题描述 投票:18回答:4

从春季休息开始,我得到以下错误

org.springframework.beans.factory.BeanCreationException:创建名为'jpaMappingContext'的bean时出错:init方法的调用失败;嵌套异常是java.lang.IllegalArgumentException:必须至少存在一个JPA元模型!在org.springframework上的org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1595)〜[spring-beans-5.0.0.BUILD-SNAPSHOT.jar:5.0.0.BUILD-SNAPSHOT]。 org.springframework.beans.factory.support上的beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:566)〜[spring-beans-5.0.0.BUILD-SNAPSHOT.jar:5.0.0.BUILD-SNAPSHOT] org.springframework.beans.factory.support.AbstractBeanFactory $ 1.getObject中的.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)〜[spring-beans-5.0.0.BUILD-SNAPSHOT.jar:5.0.0.BUILD-SNAPSHOT] (AbstractBeanFactory.java:304)〜[spring-beans-5.0.0.BUILD-SNAPSHOT.jar:5.0.0.BUILD-SNAPSHOT]在org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java: 230)〜[spring-beans-5.0.0.BUILD-SNAPSHOT.jar:5.0.0.BUILD-SNAPSHOT] org.springframework.beans.factory.suppo org.springframework.beans.factory.support.AbstractBeanFactory.getBean中的rt.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:300)〜[spring-beans-5.0.0.BUILD-SNAPSHOT.jar:5.0.0.BUILD-SNAPSHOT] (AbstractBeanFactory.java:195)〜[spring-beans-5.0.0.BUILD-SNAPSHOT.jar:5.0.0.BUILD-SNAPSHOT]在org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java: 725)〜[spring-beans-5.0.0.BUILD-SNAPSHOT.jar:5.0.0.BUILD-SNAPSHOT]在org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:866)〜[spring-context在org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542)〜[spring-context-5.0.0.BUILD- SNAPSHOT.jar:5.0.0.BUILD-SNAPSHOT]在org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122)〜[spring-boot-2.0 or.0.BUILD-SNAPSHOT.jar:2.0.0.BUILD-SNAPSHOT]在org.springframework.boot.SpringApplication.refresh(SpringApplication.java:736)[spring-boot-2.0.0.BUILD-SNAPSHOT.jar:2.0 .O.BUILD-SNAPSHOT] org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:369)[spring-boot-2.0.0.BUILD-SNAPSHOT.jar:2.0.0.BUILD-SNAPSHOT] at org。 springframework.boot.SpringApplication.run(SpringApplication.java:313)[spring-boot-2.0.0.BUILD-SNAPSHOT.jar:2.0.0.BUILD-SNAPSHOT]在org.springframework.boot.SpringApplication.run(SpringApplication。 java:1161)[spring-boot-2.0.0.BUILD-SNAPSHOT.jar:2.0.0.BUILD-SNAPSHOT]在org.springframework.boot.SpringApplication.run(SpringApplication.java:1150)[spring-boot-2.0 com.java.app.QuickPollApplication.main中的.0.BUILD-SNAPSHOT.jar:2.0.0.BUILD-SNAPSHOT] [类/:na]引起:java.lang.IllegalArgumentException:At必须至少有一个JPA元模型! org.springframework.util.Assert.notEmpty(Assert.java:438)〜[spring-core-5.0.0.BUILD-SNAPSHOT.jar:5.0.0.BUILD-SNAPSHOT]在org.springframework.data.jpa。 mapping.JpaMetamodelMappingContext。(JpaMetamodelMappingContext.java:52)〜[spring-data-jpa-1.11.0.BUILD-SNAPSHOT.jar:na] at org.springframework.data.jpa.repository.config.JpaMetamodelMappingContextFactoryBean.createInstance(JpaMetamodelMappingContextFactoryBean。 java:71)〜[spring-data-jpa-1.11.0.BUILD-SNAPSHOT.jar:na] at org.springframework.data.jpa.repository.config.JpaMetamodelMappingContextFactoryBean.createInstance(JpaMetamodelMappingContextFactoryBean.java:26)〜[spring -data-jpa-1.11.0.BUILD-SNAPSHOT.jar:na] at org.springframework.beans.factory.config.AbstractFactoryBean.afterPropertiesSet(AbstractFactoryBean.java:134)~ [spring-beans-5.0.0.BUILD- SNAPSHOT.jar:5.0.0.BUILD-SNAPSHOT]在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1654)〜[spring-be ans-5.0.0.BUILD-SNAPSHOT.jar:5.0.0.BUILD-SNAPSHOT]在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1591)〜[spring-beans-5.0.0 .BUILD-SNAPSHOT.jar:5.0.0.BUILD-SNAPSHOT] ...省略了16个常用帧

使用以下代码

@SpringBootApplication
@RestController
public class QuickPollApplication {

    public static void main(String[] args) {
        SpringApplication.run(QuickPollApplication.class, args);
    }

    @RequestMapping(value = "/test", method = RequestMethod.GET)
    public String testRest() {
        return "rest tested";
    }

以下是我的pom.xml

UTF-8 UTF-8 1.8

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

        <dependency>
            <groupId>org.hsqldb</groupId>
            <artifactId>hsqldb</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
        </dependency>
    </dependencies>

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

    <repositories>
        <repository>
            <id>spring-snapshots</id>
            <name>Spring Snapshots</name>
            <url>https://repo.spring.io/snapshot</url>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </repository>
        <repository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>
    <pluginRepositories>
        <pluginRepository>
            <id>spring-snapshots</id>
            <name>Spring Snapshots</name>
            <url>https://repo.spring.io/snapshot</url>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </pluginRepository>
        <pluginRepository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </pluginRepository>
    </pluginRepositories>

请帮我。我不知道如何解决这个错误

java spring maven jpa
4个回答
24
投票

你添加了

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

在你的pom.xml中。

Spring启动会尝试为JPA自动创建实体工厂,但是您没有定义任何有关JPA模型的内容。

尝试删除它,以测试到目前为止你做了什么。

之后你可以使用像this guy这样的spring-data-starter-jpa查看教程


8
投票

我通过设置更新版本的Hibernate来修复它。

<dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
         <exclusions>
             <exclusion>
                <groupId>org.hibernate</groupId>
                <artifactId>hibernate-entitymanager</artifactId>
            </exclusion>
            <exclusion>
                <groupId>org.hibernate</groupId>
                <artifactId>hibernate-core</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

    <dependency>
        <groupId>org.hibernate</groupId>
        <artifactId>hibernate-core</artifactId>
        <version>5.2.10.Final</version>
    </dependency>

你可以在这里找到一个完整的例子:https://github.com/zobarov/ptc-task-executor


2
投票

您还可以通过排除以下自动配置类来禁用Spring Data JPA的存储库支持(例如,在您的@EnableAutoConfiguration@SpringBootApplication注释中)

org.springframework.boot.autoconfigure.data.jpa.JpaRepositoriesAutoConfiguration

例如:

@EnableAutoConfiguration(exclude = JpaRepositoriesAutoConfiguration.class)

0
投票

这对我有用。

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-jpa</artifactId>
     <exclusions>
         <exclusion>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-entitymanager</artifactId>
        </exclusion>
        <exclusion>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
        </exclusion>
    </exclusions>
</dependency>
<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-core</artifactId>
    <version>5.2.10.Final</version>
</dependency>
© www.soinside.com 2019 - 2024. All rights reserved.