运行spring boot项目Failed to configure a DataSource

1.环境

win10
jdk13
Eclipse IDE for Enterprise Java Developers Version: 2019-12 (4.14.0)
apache-maven-3.6.3

2.创建springboot项目

3.配置/src/main/resources/application.properties文件

server.port=9001
#默认为server.port=8080

端口自定

4.创建controller

package com.example.demo.controller;


import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class HelloController {
	@RequestMapping("/hello1")
	    public String sayHello() {
	        return "Hello, SpringBoot!";
	    }

}

3.运行报错

Description:

Failed to configure a DataSource: 'url' attribute is not specified and no embedded datasource could be configured.

Reason: Failed to determine a suitable driver class


Action:

Consider the following:
	If you want an embedded database (H2, HSQL or Derby), please put it on the classpath.
	If you have database settings to be loaded from a particular profile you may need to activate it (no profiles are currently active).

4.问题：

经过调试发现pom.xml文件加载：spring-boot-starter-jdbc，mysql-connector-java，但是application.properties文件没有相应的配置

5.解决方案：

1去掉spring-boot-starter-jdbc，mysql-connector-java

2.配置application.properties文件

6.重新运行

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