mybatis之动态SQL操作之更新

2023年8月3日发(作者：)

mybatis之动态SQL操作之更新1） 更新条件不确定，需要根据情况产⽣SQL语法，这种情况叫动态SQL/** * 持久层*/public class StudentDao { /** * 动态SQL--更新 */ public void dynaSQLwithUpdate(Student student) throws Exception{ SqlSession sqlSession = Session(); try{ ("LwithUpdate",student); }catch(Exception e){ tackTrace(); ck(); throw e; }finally{ (); qlSession(); } } public static void main(String[] args) throws Exception{ StudentDao dao = new StudentDao(); LwithUpdate(new Student(10,null,5000D)); LwithUpdate(new Student(10,"哈哈",null)); LwithUpdate(new Student(10,"哈哈",6000D)); }} update students

name=#{name}, sal=#{sal}, where id=#{id}

2023年8月3日发(作者：)

mybatis之动态SQL操作之更新1） 更新条件不确定，需要根据情况产⽣SQL语法，这种情况叫动态SQL/** * 持久层*/public class StudentDao { /** * 动态SQL--更新 */ public void dynaSQLwithUpdate(Student student) throws Exception{ SqlSession sqlSession = Session(); try{ ("LwithUpdate",student); }catch(Exception e){ tackTrace(); ck(); throw e; }finally{ (); qlSession(); } } public static void main(String[] args) throws Exception{ StudentDao dao = new StudentDao(); LwithUpdate(new Student(10,null,5000D)); LwithUpdate(new Student(10,"哈哈",null)); LwithUpdate(new Student(10,"哈哈",6000D)); }} update students

name=#{name}, sal=#{sal}, where id=#{id}