原因：com.mysql.cj.exceptions.cjexception：拒绝用户''@'localhost'的访问（使用密码：NO）

Question

我的application.properties文件：

spring.datasource.url=jdbc:mysql:/localhost:3306/appautorreconnect=true&usessl=false

spring.datasource.data-username=myusername

spring.jpa.properties.hibernate.dialecto=org.hibernate.dialect.mysql5innodbdialectoc

spring.jpa.hibernate.ddl-auto=更新

logging.level.org.hibernate.sql=debug

我的pom.xml依赖项：

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <scope>runtime</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
        <scope>runtime</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-thymeleaf</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
</dependencies>

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

谢谢你的帮助

Answer 1

没关系，我在appplication.properties中做了更改：

spring.datasource.data.username=root spring.datasource.data.password=root

到spring.datasource.username=root spring.datasource.password=root，现在它可以工作了。