persistence-api-1.0.2，这个版本太低了，缺很多类

    1. <dependency>
    2.     <groupId>javax.persistence</groupId>
    3.     <artifactId>persistence-api</artifactId>
    4.     <version>1.0.2</version>
    5. </dependency>

    javax.persistence-api-2.2，这个必须要jdk8+才能运行

    1. <dependency>
    2.     <groupId>javax.persistence</groupId>
    3.     <artifactId>javax.persistence-api</artifactId>
    4.     <version>2.2</version>
    5. </dependency>

    最终选择hibernate-jpa-2.1-api，支持jdk1.6
    这个版本与javax.persistence-api-2.2相比基本相同
    只缺少TableGenerators和SequenceGenerators两个注解

    1. <dependency>
    2.     <groupId>org.hibernate.javax.persistence</groupId>
    3.     <artifactId>hibernate-jpa-2.1-api</artifactId>
    4.     <version>1.0.2.Final</version>
    5. </dependency>

    由于groupId和artifactId不相同，需要添加exclusion才能避免冲突

    1. <dependency>
    2.     <groupId>org.hibernate</groupId>
    3.     <artifactId>hibernate-core</artifactId>
    4.     <version>5.0.8.Final</version>
    5.     <exclusions>
    6.         <exclusion>
    7.             <groupId>org.hibernate.javax.persistence</groupId>
    8.             <artifactId>hibernate-jpa-2.1-api</artifactId>
    9.         </exclusion>
    10.     </exclusions>
    11. </dependency>
    12. <dependency>
    13.     <groupId>tk.mybatis</groupId>
    14.     <artifactId>mapper</artifactId>
    15.     <version>3.3.8</version>
    16.     <exclusions>
    17.         <exclusion>
    18.             <groupId>javax.persistence</groupId>
    19.             <artifactId>persistence-api</artifactId>
    20.         </exclusion>
    21.     </exclusions>
    22. </dependency>