java - 配置数据源失败 : Intellij Error when connecting Database to Spring Application

Question

拜托，我真的需要帮助。我看过其他类似的问题，但没有一个能解决我的问题。我正在运行一个试图连接到本地数据库的 Spring 应用程序，但我不断收到以下错误

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).

这是我的 application.properties(是的，它在资源文件夹中):

>spring.jpa.hibernate.ddl-auto=create
>spring.datasource.url=jdbc:mysql://localhost:3306/CierraDB
>spring.datasource.username=
>spring.datasource.password=

这是我的 pom.xml:

<?xml version="1.0" encoding="UTF-8"?>

http://maven.apache.org/xsd/maven-4.0.0.xsd"> 4.0.0

<groupId>org.springframework</groupId>
<artifactId>read-db</artifactId>
<version>1.0-SNAPSHOT</version>

<name>mysql-jdbc-driver</name>
<description>example</description>
<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.0.3.RELEASE</version>
</parent>

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-jdbc</artifactId>
        <version>4.2.1.RELEASE</version>
    </dependency>

    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
</dependencies>

<properties>
    <java.version>1.8</java.version>
</properties>

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

Answer 1

您是否指定了驱动程序类并将带有 mysql 驱动程序类的 jar 包含在您的类路径中？

spring.datasource.driver-class-name=com.mysql.jdbc.Driver