spring boot 數據庫錯誤數據源“org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaConfiguration”

Question

我正在使用 spring boot、hibernate 和我的 sql，但出現錯誤。

org.springframework.beans.factory.UnsatisfiedDependencyException：創建名為“org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaConfiguration”的bean時出錯：通過構造函數參數0表達的不滿足的依賴； 嵌套異常是 org.springframework.beans.factory.BeanCreationException：在類路徑資源 [org/springframework/boot/autoconfigure/jdbc/DataSourceConfiguration$Hikari.class] 中定義名稱為“dataSource”的 bean 創建錯誤：通過工廠方法的 Bean 實例化失敗; 嵌套異常是 org.springframework.beans.BeanInstantiationException：無法實例化 [com.zaxxer.hikari.HikariDataSource]：工廠方法“dataSource”拋出異常； 嵌套異常是 java.lang.IllegalStateException：無法加載驅動程序類：com.mysql.jdbc.Driver at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:732) ~[spring-beans-5.0. 9.RELEASE.jar:5.0.9.RELEASE] 在 org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:197) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9 .RELEASE] 在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1267) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE] 在 org.springframework.beans .factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1124) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE] 在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean( AbstractAutowireCapableBeanFactory.java:535) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE] 在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:495) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE] 在 org.springframework.beans.factory。 support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:317) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE] 在 org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton( DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE] 在 org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:315) ~[spring -beans-5.0.9.RELEASE.jar:5.0.9.RELEASE] 在 org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.0.9.RELEASE. jar:5.0.9.RELEASE] 在 org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:372) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE] 在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1247) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE] 在 org.springframework.beans.factory.support .AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1096) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE] 在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateCapBeanable(Abstract.java:Autowire第535話.9.RELEASE.jar:5.0.9.RELEASE] 在 org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:317) ~[spring-beans-5.0.9.RELEASE.jar :5.0.9.RELEASE] 在 org.springframework.beans.factory.support.DefaultSingletonBeanRegistry。 getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE] 在 org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:315) ~ [spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE] 在 org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.0.9. RELEASE.jar:5.0.9.RELEASE] 在 org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1089) ~[spring-context-5.0.9.RELEASE.jar:5.0.9.RELEASE] 在org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:859) ~[spring-context-5.0.9.RELEASE.jar:5.0.9.RELEASE] 在 org.springframework.context.support.AbstractApplicationContext.refresh (AbstractApplicationContext.java:550) ~[spring-context-5.0.9.RELEASE.jar:5.0.9.RELEASE] 在 org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refre sh(ServletWebServerApplicationContext.java:140) ~[spring-boot-2.0.5.RELEASE.jar:2.0.5.RELEASE] 在 org.springframework.boot.SpringApplication.refresh(SpringApplication.java:780) [spring-boot- 2.0.5.RELEASE.jar:2.0.5.RELEASE] 在 org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:412) [spring-boot-2.0.5.RELEASE.jar:2.0.5.RELEASE]在 org.springframework.boot.SpringApplication.run(SpringApplication.java:333) [spring-boot-2.0.5.RELEASE.jar:2.0.5.RELEASE] 在 org.springframework.boot.SpringApplication.run(SpringApplication.java) :1277) [spring-boot-2.0.5.RELEASE.jar:2.0.5.RELEASE] 在 org.springframework.boot.SpringApplication.run(SpringApplication.java:1265) [spring-boot-2.0.5.RELEASE. jar:2.0.5.RELEASE] at com.trial.TrialApplication.main(TrialApplication.java:15) [classes/:na] 引起：org.springframework.beans.factory.BeanCreationException：創建名為“dataSource”的 bean 時出錯在類路徑資源中定義 [org/springframework/boot/autoconfigure/jdbc/DataSo urceConfiguration$Hikari.class]：通過工廠方法實例化Bean失敗； 嵌套異常是 org.springframework.beans.BeanInstantiationException：無法實例化 [com.zaxxer.hikari.HikariDataSource]：工廠方法“dataSource”拋出異常； 嵌套異常是 java.lang.IllegalStateException：無法加載驅動程序類：com.mysql.jdbc.Driver 在 org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:590) ~[spring-beans-5.0. 9.RELEASE.jar:5.0.9.RELEASE] 在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1247) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9 .RELEASE] 在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1096) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE] 在 org.springframework.beans .factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:535) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE] 在 org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean( AbstractAutowireCapableBeanFactory.java:495) ~[sprin g-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE] 在 org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:317) ~[spring-beans-5.0. 9.RELEASE.jar:5.0.9.RELEASE] 在 org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9 .RELEASE] 在 org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:315) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE] 在 org.springframework.beans .factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE] 在 org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate( DependencyDescriptor.java:251) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE] 在 org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1135) ~[spring -beans-5.0.9.RELEASE .jar:5.0.9.RELEASE] 在 org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1062) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE]在 org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:818) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE] 在 org.springframework.beans.factory。 support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:724) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE] ... 省略了 28 個常見框架 引起：org.springframework.beans.BeanInstantiationException：無法實例化 [com.zaxxer.hikari.HikariDataSource]：工廠方法“dataSource”拋出異常； 嵌套異常是 java.lang.IllegalStateException：無法加載驅動程序類：com.mysql.jdbc.Driver at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185) ~[spring-beans-5.0. 9.RELEASE.jar:5.0.9.RELEASE] 在 org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:582) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9 .RELEASE] ... 41個常見框架被省略導致：java.lang.IllegalStateException：無法加載驅動程序類：com.mysql.jdbc.Driver at org.springframework.util.Assert.state(Assert.java:94) ~[ spring-core-5.0.9.RELEASE.jar:5.0.9.RELEASE] 在 org.springframework.boot.autoconfigure.jdbc.DataSourceProperties.determineDriverClassName(DataSourceProperties.java:224) ~[spring-boot-autoconfigure-2.0.5 .RELEASE.jar:2.0.5.RELEASE] 在 org.springframework.boot.autoconfigure.jdbc.DataSourceProperties.initializeDataSourceBuilder(DataSourceProperties.java:176) ~[spring-boot-auto configure-2.0.5.RELEASE.jar:2.0.5.RELEASE] 在 org.springframework.boot.autoconfigure.jdbc.DataSourceConfiguration.createDataSource(DataSourceConfiguration.java:43) ~[spring-boot-autoconfigure-2.0.5.RELEASE .jar:2.0.5.RELEASE] 在 org.springframework.boot.autoconfigure.jdbc.DataSourceConfiguration$Hikari.dataSource(DataSourceConfiguration.java:83) ~[spring-boot-autoconfigure-2.0.5.RELEASE.jar:2.0. 5.RELEASE] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_181] at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_181] at sun.reflect.DelegatingMethodAccessorImpl .invoke(Unknown Source) ~[na:1.8.0_181] at java.lang.reflect.Method.invoke(Unknown Source) ~[na:1.8.0_181] at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate (SimpleInstantiationStrategy.java:154) ~[spring-beans-5.0.9.RELEASE.jar:5.0.9.RELEASE] ... 42個常用幀省略

pom.xml 文件

<?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>com.bookstore</groupId>
    <artifactId>bookstore</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>
    <name>bookstore</name>
    <description>Demo project for Spring Boot</description>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.5.RELEASE</version>
        <relativePath /> <!-- lookup parent from repository -->
    </parent>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>
        <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-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>

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

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

實體類是

package com.trial.hibernate;

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


@Entity
public class Employee {

    @Id
    @GeneratedValue(strategy=GenerationType.AUTO)
    private int id;
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public String getPhone() {
        return phone;
    }
    public void setPhone(String phone) {
        this.phone = phone;
    }
    private String name;
    private String phone;

}

屬性文件是

server.port=8181
spring.thymeleaf.cache=false
# create and drop tables and sequences, loads import.sql
spring.jpa.hibernate.ddl-auto=create
# database settings
spring.datasource.url=jdbc:mysql://localhost:3306/bookstore?useSSL=false
spring.datasource.username=root
spring.datasource.password=oracle
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.jpa.show-sql=true

github 存儲庫鏈接是https://github.com/dishankgoyal/springsBoot

我怎樣才能解決這個問題？

Answer 1

我發現你的項目在我的最后運行良好，你可能會嘗試在最后完成一些事情。

1. 嘗試更改為spring.datasource.driverClassName=com.mysql.jdbc.Driver

2. 從主類中刪除@ComponentScan()並將@SpringBootApplication留在那里。

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

3. 通過 project-->rebuild/clean 或運行命令mvn clean install或刪除.m2/repository或重新導入項目或重新啟動 IDE/系統來清理您的項目可能會有所幫助。