为什么springboot+mybatis+mysql 数据库驱动无法加载？

Question

#数据库配置
spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/bookstore?useUnicode=true&characterEncoding=utf8
spring.datasource.username=root
spring.datasource.password=123456
spring.datasource.max-active=20
spring.datasource.max-idle=8
spring.datasource.min-idle=8
spring.datasource.initial-size=10

pom.xml配置依赖

mysql
mysql-connector-java
5.1.34


org.springframework.boot
spring-boot-starter-jdbc


org.springframework.boot
spring-boot-starter-test
test

    </plugin>
        <plugin>
            <groupId>org.mybatis.generator</groupId>
            <artifactId>mybatis-generator-maven-plugin</artifactId>
            <version>1.3.2</version>
            <configuration>
                <configurationFile>src\main\resources\templates\mybatisgenerator_config.xml</configurationFile>
                <verbose>true</verbose>
                <overwrite>true</overwrite>
            </configuration>
        </plugin>
    </plugins>
    <resources>
        <resource>
            <directory>src/main/resources</directory>
            <includes>
                <include>**/*.xml</include>
            </includes>
        </resource>
    </resources>


    启动代码
    package com.example.bookstore_demo;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;

@SpringBootApplication
@MapperScan(basePackages = "com.example.bookstore_demo.dao")
public class BookstoreDemoApplication {

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

}

报错Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
2017-11-13 13:52:17.858 ERROR 4136 --- [ restartedMain] o.s.b.d.LoggingFailureAnalysisReporter :

---

APPLICATION FAILED TO START

---

Description:

Cannot determine embedded database driver class for database type NONE

Action:

If you want an embedded database please put a supported one on the classpath. If you have database settings to be loaded from a particular profile you may need to active it (no profiles are currently active).

Disconnected from the target VM, address: '127.0.0.1:49367', transport: 'socket'

Process finished with exit code 0

Answer 1

如果你想要一个嵌入式数据库，请支持一个在类路径。如果要从特定的配置文件中加载数据库设置，则可能需要激活它（目前没有配置文件）。

百度翻译一下呗。你还不是没有引入配置文件？