小贝子编程

创建 Bean - Java - Maven 3.5 - Spring 5 - Hibernate 5 时出错



我正在为大学做功课，其中包括使用 Java+Spring 构建一个 API，可以从收到的请求中保存 IP、操作系统和浏览器。

代码上传到 Github，网址如下：https://github.com/devMozo/MozoJava/tree/TP-4

在那里，我有我正在使用的数据库的.sql。

当我尝试使用 Maven 启动程序时，控制台输出一条错误消息，指出以下文本：

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'userController': Unsatisfied dependency expressed through field 'tUserDAO'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'iUserDAO': Post-processing of merged bean definition failed; nested exception is java.lang.NoSuchMethodError: javax.persistence.PersistenceContext.synchronization()Ljavax/persistence/SynchronizationType;
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:587) ~[spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:91) ~[spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:373) ~[spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1344) ~[spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:578) ~[spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:501) ~[spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:317) ~[spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) ~[spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:315) ~[spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:760) ~[spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:869) ~[spring-context-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550) ~[spring-context-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140) ~[spring-boot-2.0.1.RELEASE.jar:2.0.1.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759) [spring-boot-2.0.1.RELEASE.jar:2.0.1.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:395) [spring-boot-2.0.1.RELEASE.jar:2.0.1.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:327) [spring-boot-2.0.1.RELEASE.jar:2.0.1.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1255) [spring-boot-2.0.1.RELEASE.jar:2.0.1.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1243) [spring-boot-2.0.1.RELEASE.jar:2.0.1.RELEASE]
at com.mozo.Tp4MozoNicolasApplication.main(Tp4MozoNicolasApplication.java:18) [classes/:na]
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'iUserDAO': Post-processing of merged bean definition failed; nested exception is java.lang.NoSuchMethodError: javax.persistence.PersistenceContext.synchronization()Ljavax/persistence/SynchronizationType;
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:556) ~[spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:501) ~[spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:317) ~[spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228) ~[spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:315) ~[spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:251) ~[spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1138) ~[spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1065) ~[spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:584) ~[spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE]
... 19 common frames omitted
Caused by: java.lang.NoSuchMethodError: javax.persistence.PersistenceContext.synchronization()Ljavax/persistence/SynchronizationType;
at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor$PersistenceElement.<init>(PersistenceAnnotationBeanPostProcessor.java:653) ~[spring-orm-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.lambda$buildPersistenceMetadata$1(PersistenceAnnotationBeanPostProcessor.java:435) ~[spring-orm-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.util.ReflectionUtils.doWithLocalMethods(ReflectionUtils.java:522) ~[spring-core-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.buildPersistenceMetadata(PersistenceAnnotationBeanPostProcessor.java:420) ~[spring-orm-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.findPersistenceMetadata(PersistenceAnnotationBeanPostProcessor.java:394) ~[spring-orm-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.postProcessMergedBeanDefinition(PersistenceAnnotationBeanPostProcessor.java:332) ~[spring-orm-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyMergedBeanDefinitionPostProcessors(AbstractAutowireCapableBeanFactory.java:1016) ~[spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553) ~[spring-beans-5.0.5.RELEASE.jar:5.0.5.RELEASE]
... 28 common frames omitted

什么意思？我找不到错误在哪里，这与我跳过的一些配置有关？

控制器：

@RestController
public class UserController {
    @Autowired
    private iUserDAO tUserDAO;
    @Autowired
    private iNavigatorDAO tNavigatorDAO;
    @Autowired
    private iOSDAO tOSDAO;
    @RequestMapping(value = "/")
    public Iterable<User> getIP(){
        // Get a Request object from the request sent
        HttpServletRequest tRequest = ((ServletRequestAttributes) RequestContextHolder.currentRequestAttributes())
                .getRequest();
        // Get the IP from the object
        String ip = tRequest.getRemoteAddr();
        // Get the User-Agent propertie from the Request
        UserAgent tUserAgent = UserAgent.parseUserAgentString(tRequest.getHeader("User-Agent"));
        // Get the OS (Operating System)
        OperatingSystem tOperatingSystem = tUserAgent.getOperatingSystem();
        // Get the browser object
        Browser tBrowser = tUserAgent.getBrowser();
        // Now the version..
        Version tBrowserVersion = tUserAgent.getBrowserVersion();
        // Create a new User
        User tUser = new User();
        // Set the IP to the User
        tUser.setIp(ip);
        // Try too save the user
        try {
            // Create a new navigator's model
            Navigator tNavigator = new Navigator();
            // Set the name of the browser inside the object
            tNavigator.setName(tBrowser.getName() + " " + tBrowserVersion.getMajorVersion());
            // Create a new OS's model
            OS tOS = new OS();
            // Save the operative system's name
            tOS.setName(tOperatingSystem.getName());
            // Save the Browser in the DB
            this.tNavigatorDAO.save(tNavigator);
            // Save the OS
            this.tOSDAO.save(tOS);
            // Save this User on the DB
            this.tUserDAO.save(tUser);
        } catch (Exception e){
            System.out.println(e.getMessage());
        }
        // Return this IP
        return this.tUserDAO.findAll();
    }
   /* @RequestMapping(value = "/action/getBrowserMostUsed")
    public List<User> getBrowserMostUsed(){
        // Return this IP
        return this.tUserDAO.findAllUsers();
    }
    @RequestMapping(value = "/action/getOSMostUsed")
    public List<User> getOSMostUsed(){
        // Return this IP
        return this.tUserDAO.findAllUsers();
    }
    @RequestMapping(value = "/action/getCombinationMostUsed")
    public List<User> getCombinationMostUsed(){
        // Return this IP
        return this.tUserDAO.findAllUsers();
    }*/
}

存储 库：

@Transactional
public interface iUserDAO extends CrudRepository<User, Long> {
}

实体：

@Entity
@Getter
@Setter
@Table(name="users")
public class User {
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name="id", nullable = false)
    private int id;
    @Column(name="ip", nullable = false, unique = true)
    private String ip;
    @ManyToOne
    @Column(name="id_os", nullable = false)
    private String id_os;
    @ManyToOne
    @Column(name="id_browser", nullable = false)
    private String id_browser;
}

很抱歉分享我所有的代码，我知道最好只分享错误的代码，但我会再重复一遍，我不知道出了什么问题，我看了很多教程和有类似问题的人，但我仍然迷失了。

原因：

你需要在iUserDAO中定义你的方法。

在你的UserController.java，你正在拨打这样的电话

this.tUserDAO.save(tUser) ，

this.tUserDAO.findAll() ， 和

this.tUserDAO.findAllUsers() ，

但是您尚未在 iUserDAO.java 中定义这些方法。

package com.mozo.daos;
import com.mozo.models.User;
import org.springframework.data.repository.CrudRepository;
import org.springframework.transaction.annotation.Transactional;
import java.util.List;
/**
 * UserService's Interface
 */
@Transactional
public interface iUserDAO extends CrudRepository<User, Long> {
    public User save(User user);
    public User findUserById(int id);
    public List<User> findAll();
}

发生了什么事情：

Spring 在幕后运行一些东西来使用你的注释，但它在接口上找不到任何这样的方法声明来构建它，所以当 Autowire 接管时，它没有方法可以将你的调用映射到。

我还将建议进行编辑，以在您的问题中发布相关代码以供将来使用。

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