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  • 01_8_sql主键生成方式

    01_8_sql主键生成方式

    1. 配置映射文件

    <insert id="insertStudentBySequence" parameterClass="Student">

     <selectKey resultClass="int" keyProperty="sid">

     select studentPKSequence.nextVal as sid from dual

     </selectKey>

     insert into Student(sid, name, major, birth, score) values(#sid#, #name#, #major#, #birth#, #score#)

     </insert>

    2. 实现类的方法

    public void addStudentBySequence(Student student) {

    try {

    sqlMapClient.insert("insertStudentBySequence", student);

    } catch (SQLException e) {

    e.printStackTrace();

    }

    }

    3. 测试

    public static void main(String[] args) {

    Student student = new Student();

    student.setName("星星");

    student.setMajor("数学");

    student.setScore(10);

    student.setBirth(Date.valueOf("2018-01-1"));

    student.setSid(12);

    IStudentDAO dao = new IStudentDAOImpl();

    dao.addStudentBySequence(student);

    for(Student stu : dao.queryAllStudent()) {

    System.out.println(stu);

    }

    }

    [sid:1, name:李明, major:语文, birth:Tue Mar 27 00:00:00 CST 2018, score:100.0]

    [sid:2, name:可可, major:英语, birth:Mon Mar 12 00:00:00 CST 2018, score:120.0]

    [sid:3, name:子浩, major:数学, birth:Thu Jan 25 00:00:00 CST 2018, score:100.0]

    [sid:22, name:星星, major:数学, birth:Mon Jan 01 00:00:00 CST 2018, score:10.0]

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  • 原文地址:https://www.cnblogs.com/flyback/p/8667070.html
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