数据库连接错误.....无法加载驱动程序类...数据源异常

时间:2019-03-03 12:35:40

标签: mysql spring jdbc datasource spring-tool-suite

应用程序属性

spring.jpa.hibernate.ddl-auto=update
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver    
spring.datasource.url=jdbc:mysql://localhost:3306/RESERVATION?useSSL=false
spring.datasource.data-username=sam
spring.datasource.data-password=admin123 spring.jpa.show-sql=true
spring.mvc.view.prefix=/WEB-INF/jsps/ spring.mvc.view.suffix=.jsp
server.servlet.context-path=/flightreservation2     
spring.jpa.database=MYSQL spring.datasource.tomcat.max-wait=10000
spring.datasource.tomcat.max-active=50
spring.datasource.tomcat.test-on-borrow=true

应用程序主要

package com.sam.flightreservation;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication public class Flightreservation2Application {

    public static void main(String[] args) {
        SpringApplication.run(Flightreservation2Application.class, args);
    }
}

错误

  

启动ApplicationContext时出错。显示条件报告   在启用“调试”的情况下重新运行您的应用程序。 2019-03-03 17:42:47.183   错误10344 --- [restartedMain] o.s.boot.SpringApplication
  :应用程序运行失败

     

org.springframework.beans.factory.UnsatisfiedDependencyException:   创建名称为“ inMemoryDatabaseShutdownExecutor”的bean时出错   在类路径资源中定义   [org / springframework / boot / devtools / autoconfigure / DevToolsDataSourceAutoConfiguration.class]:   通过方法表达的不满意依赖性   'inMemoryDatabaseShutdownExecutor'参数0;嵌套异常为   org.springframework.beans.factory.BeanCreationException:错误   创建在类路径资源中定义的名称为“ dataSource”的bean   [org / springframework / boot / autoconfigure / jdbc / DataSourceConfiguration $ Hikari.class]:   通过工厂方法实例化Bean失败;嵌套异常为   org.springframework.beans.BeanInstantiationException:失败   实例化[com.zaxxer.hikari.HikariDataSource]:工厂方法   'dataSource'引发异常;嵌套异常为   java.lang.IllegalStateException:无法加载驱动程序类:   com.mysql.cj.jdbc.Driver位于   org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:769)   〜[spring-beans-5.1.5.RELEASE.jar:5.1.5.RELEASE]在   org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:509)   〜[spring-beans-5.1.5.RELEASE.jar:5.1.5.RELEASE]在   org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1305)   〜[spring-beans-5.1.5.RELEASE.jar:5.1.5.RELEASE]在   org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1144)   〜[spring-beans-5.1.5.RELEASE.jar:5.1.5.RELEASE]在   org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555)   〜[spring-beans-5.1.5.RELEASE.jar:5.1.5.RELEASE]在   org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515)   〜[spring-beans-5.1.5.RELEASE.jar:5.1.5.RELEASE]在   org.springframework.beans.factory.support.AbstractBeanFactory.lambda $ doGetBean $ 0(AbstractBeanFactory.java:320)   〜[spring-beans-5.1.5.RELEASE.jar:5.1.5.RELEASE]在   org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)   〜[spring-beans-5.1.5.RELEASE.jar:5.1.5.RELEASE]在   org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318)   〜[spring-beans-5.1.5.RELEASE.jar:5.1.5.RELEASE]在   org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)   〜[spring-beans-5.1.5.RELEASE.jar:5.1.5.RELEASE]在   org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:307)   〜[spring-beans-5.1.5.RELEASE.jar:5.1.5.RELEASE]在   org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)   〜[spring-beans-5.1.5.RELEASE.jar:5.1.5.RELEASE]在   org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1105)   〜[spring-context-5.1.5.RELEASE.jar:5.1.5.RELEASE]在   org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867)   〜[spring-context-5.1.5.RELEASE.jar:5.1.5.RELEASE]在   org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549)   〜[spring-context-5.1.5.RELEASE.jar:5.1.5.RELEASE]在   org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142)   〜[spring-boot-2.1.3.RELEASE.jar:2.1.3.RELEASE]在   org.springframework.boot.SpringApplication.refresh(SpringApplication.java:775)   [spring-boot-2.1.3.RELEASE.jar:2.1.3.RELEASE]位于   org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)   [spring-boot-2.1.3.RELEASE.jar:2.1.3.RELEASE]位于   org.springframework.boot.SpringApplication.run(SpringApplication.java:316)   [spring-boot-2.1.3.RELEASE.jar:2.1.3.RELEASE]位于   org.springframework.boot.SpringApplication.run(SpringApplication.java:1260)   [spring-boot-2.1.3.RELEASE.jar:2.1.3.RELEASE]位于   org.springframework.boot.SpringApplication.run(SpringApplication.java:1248)   [spring-boot-2.1.3.RELEASE.jar:2.1.3.RELEASE]位于   com.sam.flightreservation.Flightreservation2Application.main(Flightreservation2Application.java:10)   [classes /:na]位于sun.reflect.NativeMethodAccessorImpl.invoke0(Native   方法)〜[na:1.8.0_161]在   sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)   〜[na:1.8.0_161]在   sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)   〜[na:1.8.0_161] at java.lang.reflect.Method.invoke(Method.java:498)   〜[na:1.8.0_161]在   org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49)   [spring-boot-devtools-2.1.3.RELEASE.jar:2.1.3.RELEASE]

我几乎尝试了每个网站/ YouTube,但问题仍然存在。

2 个答案:

答案 0 :(得分:1)

spring.datasource.driverClassName: com.mysql.jdbc.Driver将为您工作,并且在pom.xml中具有以下依赖关系

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

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

答案 1 :(得分:0)

不要在MySQL中使用driver-class-name

  

众所周知,就网络超时支持而言,MySQL数据源已损坏。改为使用jdbcUrl配置。

还使用有效值添加数据源的用户和密码属性