maven java Spring(org.springframework.beans.factory.UnsatisfiedDependencyException)

sczxawaw  于 2023-04-05  发布在  Maven
关注(0)|答案(1)|浏览(235)

刚开始了解Spring。但是有一个错误，它非常强烈地减慢了过程。在连接数据库之前，一切正常。连接后有一个错误，数据库创建但没有填充。我使用OpenServer和PHPMyAdmin

Error starting ApplicationContext. To display the condition evaluation report re-run your application with 'debug' enabled.
2023-04-04T23:56:17.393+03:00 ERROR 24684 --- [  restartedMain] o.s.boot.SpringApplication               : Application run failed

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'blogController': Unsatisfied dependency expressed through field 'postRepository': Error creating bean with name 'postRepository' defined in com.example.demo.repositorys.PostRepository defined in @EnableJpaRepositories declared on JpaRepositoriesRegistrar.EnableJpaRepositoriesConfiguration: Failed to convert property value of type 'jdk.proxy4.$Proxy97 implementing org.hibernate.Session,org.springframework.orm.jpa.EntityManagerProxy' to required type 'javax.persistence.EntityManager' for property 'entityManager'; Cannot convert value of type 'jdk.proxy4.$Proxy97 implementing org.hibernate.Session,org.springframework.orm.jpa.EntityManagerProxy' to required type 'javax.persistence.EntityManager' for property 'entityManager': no matching editors or conversion strategy found
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:713) ~[spring-beans-6.0.7.jar:6.0.7]
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:693) ~[spring-beans-6.0.7.jar:6.0.7]
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:133) ~[spring-beans-6.0.7.jar:6.0.7]
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessProperties(AutowiredAnnotationBeanPostProcessor.java:482) ~[spring-beans-6.0.7.jar:6.0.7]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1416) ~[spring-beans-6.0.7.jar:6.0.7]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:597) ~[spring-beans-6.0.7.jar:6.0.7]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:520) ~[spring-beans-6.0.7.jar:6.0.7]
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:326) ~[spring-beans-6.0.7.jar:6.0.7]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-6.0.7.jar:6.0.7]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:324) ~[spring-beans-6.0.7.jar:6.0.7]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) ~[spring-beans-6.0.7.jar:6.0.7]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:973) ~[spring-beans-6.0.7.jar:6.0.7]
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:917) ~[spring-context-6.0.7.jar:6.0.7]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:584) ~[spring-context-6.0.7.jar:6.0.7]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:146) ~[spring-boot-3.0.5.jar:3.0.5]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:732) ~[spring-boot-3.0.5.jar:3.0.5]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:434) ~[spring-boot-3.0.5.jar:3.0.5]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:310) ~[spring-boot-3.0.5.jar:3.0.5]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1304) ~[spring-boot-3.0.5.jar:3.0.5]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1293) ~[spring-boot-3.0.5.jar:3.0.5]
    at com.example.demo.DemoApplication.main(DemoApplication.java:10) ~[classes/:na]
    at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104) ~[na:na]
    at java.base/java.lang.reflect.Method.invoke(Method.java:578) ~[na:na]
    at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) ~[spring-boot-devtools-3.0.5.jar:3.0.5]
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'postRepository' defined in com.example.demo.repositorys.PostRepository defined in @EnableJpaRepositories declared on JpaRepositoriesRegistrar.EnableJpaRepositoriesConfiguration: Failed to convert property value of type 'jdk.proxy4.$Proxy97 implementing org.hibernate.Session,org.springframework.orm.jpa.EntityManagerProxy' to required type 'javax.persistence.EntityManager' for property 'entityManager'; Cannot convert value of type 'jdk.proxy4.$Proxy97 implementing org.hibernate.Session,org.springframework.orm.jpa.EntityManagerProxy' to required type 'javax.persistence.EntityManager' for property 'entityManager': no matching editors or conversion strategy found
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:605) ~[spring-beans-6.0.7.jar:6.0.7]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:520) ~[spring-beans-6.0.7.jar:6.0.7]
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:326) ~[spring-beans-6.0.7.jar:6.0.7]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-6.0.7.jar:6.0.7]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:324) ~[spring-beans-6.0.7.jar:6.0.7]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200) ~[spring-beans-6.0.7.jar:6.0.7]
    at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:254) ~[spring-beans-6.0.7.jar:6.0.7]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1417) ~[spring-beans-6.0.7.jar:6.0.7]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1337) ~[spring-beans-6.0.7.jar:6.0.7]
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.resolveFieldValue(AutowiredAnnotationBeanPostProcessor.java:710) ~[spring-beans-6.0.7.jar:6.0.7]
    ... 23 common frames omitted
Caused by: org.springframework.beans.ConversionNotSupportedException: Failed to convert property value of type 'jdk.proxy4.$Proxy97 implementing org.hibernate.Session,org.springframework.orm.jpa.EntityManagerProxy' to required type 'javax.persistence.EntityManager' for property 'entityManager'; Cannot convert value of type 'jdk.proxy4.$Proxy97 implementing org.hibernate.Session,org.springframework.orm.jpa.EntityManagerProxy' to required type 'javax.persistence.EntityManager' for property 'entityManager': no matching editors or conversion strategy found
    at org.springframework.beans.AbstractNestablePropertyAccessor.convertIfNecessary(AbstractNestablePropertyAccessor.java:594) ~[spring-beans-6.0.7.jar:6.0.7]
    at org.springframework.beans.AbstractNestablePropertyAccessor.convertForProperty(AbstractNestablePropertyAccessor.java:608) ~[spring-beans-6.0.7.jar:6.0.7]
    at org.springframework.beans.BeanWrapperImpl.convertForProperty(BeanWrapperImpl.java:190) ~[spring-beans-6.0.7.jar:6.0.7]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.convertForProperty(AbstractAutowireCapableBeanFactory.java:1730) ~[spring-beans-6.0.7.jar:6.0.7]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1687) ~[spring-beans-6.0.7.jar:6.0.7]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1431) ~[spring-beans-6.0.7.jar:6.0.7]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:597) ~[spring-beans-6.0.7.jar:6.0.7]
    ... 32 common frames omitted
Caused by: java.lang.IllegalStateException: Cannot convert value of type 'jdk.proxy4.$Proxy97 implementing org.hibernate.Session,org.springframework.orm.jpa.EntityManagerProxy' to required type 'javax.persistence.EntityManager' for property 'entityManager': no matching editors or conversion strategy found
    at org.springframework.beans.TypeConverterDelegate.convertIfNecessary(TypeConverterDelegate.java:259) ~[spring-beans-6.0.7.jar:6.0.7]
    at org.springframework.beans.AbstractNestablePropertyAccessor.convertIfNecessary(AbstractNestablePropertyAccessor.java:589) ~[spring-beans-6.0.7.jar:6.0.7]
    ... 38 common frames omitted

Process finished with exit code 0

enter image description here

PostRepository.java:

package com.example.demo.repositorys;

import com.example.demo.models.Post;
import org.springframework.data.repository.CrudRepository;

public interface PostRepository extends CrudRepository<Post, Long> {
}

enter image description here

BlogController.java:

package com.example.demo.controllers;

import com.example.demo.models.Post;
import com.example.demo.repositorys.PostRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;

@Controller
public class BlogController {

    @Autowired
    private PostRepository postRepository;

    @GetMapping("/blog")
    public String blogMain(Model model){
        Iterable<Post> posts = postRepository.findAll();
        model.addAttribute("posts", posts);
        return "blog-main";
    }

}

enter image description here

post.java:

package com.example.demo.models;

import jakarta.persistence.Entity;
import jakarta.persistence.GeneratedValue;
import jakarta.persistence.GenerationType;
import jakarta.persistence.Id;

@Entity
public class Post {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private  Long id;
    private  String title, anons, full_text;
    private int views;

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public String getAnons() {
        return anons;
    }

    public void setAnons(String anons) {
        this.anons = anons;
    }

    public String getFull_text() {
        return full_text;
    }

    public void setFull_text(String full_text) {
        this.full_text = full_text;
    }

    public int getViews() {
        return views;
    }

    public void setViews(int views) {
        this.views = views;
    }
}

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>3.0.5</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demo</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>17</java.version>
    </properties>
    <dependencies>

        <dependency>
            <groupId>javax.persistence</groupId>
            <artifactId>javax.persistence-api</artifactId>
            <version>2.2</version>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-jpa</artifactId>
            <version>2.6.1</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.27</version>
        </dependency>

        <dependency>
            <groupId>jakarta.persistence</groupId>
            <artifactId>jakarta.persistence-api</artifactId>
            <version>3.1.0</version>
        </dependency>

    </dependencies>

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

</project>

我想创建一个网站与补充职位从数据库

Maven

1条答案

按热度按时间
xdyibdwo

xdyibdwo1#

更改pom.xml中的依赖项。从pom.xml中删除jkarta.persistence dependecies。为了更清楚地说明，以下依赖项足以达到此目的

<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-thymeleaf</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>

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

        <dependency>
            <groupId>com.mysql</groupId>
            <artifactId>mysql-connector-j</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

如果问题仍然存在，那么在PostRepository中尝试扩展到JPARepository来代替crudRepository。

import com.example.demo.models.Post;;
import org.springframework.data.jpa.repository.JpaRepository;

public interface PostRepository extends JpaRepository<Post, Integer> {

}

如果仍然有任何错误。请评论。

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