mybatisdelete返回值_从零开始学习在IntelliJIDEA中使用mybatis

&＃64;Builder


public

Student(id&＃61;1, firstName&＃61;zhou, lastName&＃61;zhe, age&＃61;20, man&＃61;false)
Student(id&＃61;2, firstName&＃61;feng, lastName&＃61;hao, age&＃61;23, man&＃61;true)



SELECT * FROM Studentinsert into student(firstName, lastName, age, man)values (#{firstName},#{lastName},#{age},#{man})update studentset firstName &＃61; #{firstName}, lastName&＃61;#{lastName}, age &＃61; #{age}, man &＃61; #{man}where id &＃61; #{id};delete from Student where id &＃61; #{id}


public class Main {public static void printRet(SqlSession sess) {// 查询List students &＃61; sess.selectList("ljw.findAll");for (Student stu: students) {System.out.println(stu.toString());}}public static void main(String[] args) throws Exception {String resource &＃61; "com/ljw/mybatis-cfg.xml";InputStream inputStream &＃61; Resources.getResourceAsStream(resource);SqlSessionFactory sqlSessionFactory &＃61;new SqlSessionFactoryBuilder().build(inputStream);try(SqlSession sess &＃61; sqlSessionFactory.openSession()) {// 查询printRet(sess);// 增加一个学生System.out.println("增加一个学生");Student stu &＃61; Student.builder().firstName("huang").lastName("he").age(30).man(true).build();sess.insert("ljw.insertStu", stu);printRet(sess);// 删除一个学生System.out.println("删除一个学生");stu.id &＃61; 2;sess.delete("ljw.deleteStu", stu);printRet(sess);// 更新一个学生System.out.println("改一个学生");stu.setFirstName("liu");stu.setId(1);System.out.println(stu.toString());sess.update("ljw.updateStu", stu);printRet(sess);}}
}


Student(id&＃61;1, firstName&＃61;zhou, lastName&＃61;zhe, age&＃61;20, man&＃61;false)
Student(id&＃61;2, firstName&＃61;feng, lastName&＃61;hao, age&＃61;23, man&＃61;true)
增加一个学生
Student(id&＃61;1, firstName&＃61;zhou, lastName&＃61;zhe, age&＃61;20, man&＃61;false)
Student(id&＃61;2, firstName&＃61;feng, lastName&＃61;hao, age&＃61;23, man&＃61;true)
Student(id&＃61;12, firstName&＃61;huang, lastName&＃61;he, age&＃61;30, man&＃61;true)
删除一个学生
Student(id&＃61;1, firstName&＃61;zhou, lastName&＃61;zhe, age&＃61;20, man&＃61;false)
Student(id&＃61;12, firstName&＃61;huang, lastName&＃61;he, age&＃61;30, man&＃61;true)
改一个学生
Student(id&＃61;1, firstName&＃61;liu, lastName&＃61;he, age&＃61;30, man&＃61;true)
Student(id&＃61;1, firstName&＃61;liu, lastName&＃61;he, age&＃61;30, man&＃61;true)
Student(id&＃61;12, firstName&＃61;huang, lastName&＃61;he, age&＃61;30, man&＃61;true)