1.UserMapper.java ~~~ //刪除，是否返回影響行數 int delete(int id); ~~~ 2.UserMapper.xml ~~~ <!--刪除語句 返回影響行數--> <delete id="delete"> delete from t_user where id = #{id} </delete> ~~~ 3.Test.java ~~~ //定義配置文件路徑 String resource = "mybatis-config.xml";//不能加 根目錄 / InputStream inputStream = null; try {//加載配置文件 inputStream = Resources.getResourceAsStream(resource); } catch (IOException e) { e.printStackTrace(); }//根據配置文件創建SessionFactory對象 SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream); //獲得SqlSession SqlSession session = sqlSessionFactory.openSession(); //獲得UserMapper接口的實現類 UserMapper mapper = session.getMapper(UserMapper.class); //調用UserMapper方法,執行xml中定義的SQL語句 int row = mapper.delete(22); //需要顯式提交session session.commit(); session.close(); System.out.println(row); ~~~