数据库连接错误…无法加载驱动程序类…数据源异常

Question

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

应用程序主程序

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。若要显示条件报告，请在启用“调试”的情况下重新运行应用程序。2019-03-03 17:42:47.183错误10344-[restartedMain]O.S.Boot.SpringApplication
:应用程序运行失败

几乎每个站点/YouTube我都试过了，但问题还在。

Answer 1

spring.datasource.driverclassname:com.mysql.jdbc.driver将在pom.xml中使用以下依赖项

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

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