You will see this on the Internet: the solution is to remove the JavaEE package from MyEclipse, create your own user libraries, add the jsf-api.jar jsf-impl.jar jstl-1.2.jar package in JavaEE, and then add the servlet-api.jar in Tomcat. In fact, the javaee.jar in JavaEE is replaced with the servlet-api.jar in Tomcat. This problem is solved.

You can also see this solution:

 <dependency>
			<groupId>tk.mybatis</groupId>
			<artifactId>mapper-spring-boot-starter</artifactId>
			<version>1.1.1</version>
			<exclusions>
				<exclusion>
					<groupId>javax.persistence</groupId>
					<artifactId>persistence-api</artifactId>
				</exclusion>
			</exclusions>
		</dependency>

You can also see this solution:

<dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-jpa</artifactId>
            <version>2.1.5.RELEASE</version>
        </dependency>

You can also see this solution:

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

There is also this solution:

<dependency>
            <groupId>org.hibernate.javax.persistence</groupId>
            <artifactId>hibernate-jpa-2.0-api</artifactId>
            <version>1.0.1.Final</version>
        </dependency>

Try it all