01_6_修改实体对象
1. 配置相应的映射文件
<update id="updateStudentById" parameterClass="Student">
update student set name=#name#, major=#major#, score=#score#, birth=#birth#
where sid=#sid# </update>
2. 实现类的方法
public void updateStudentById(Student student) {
try {
sqlMapClient.update("updateStudentById", student);
} catch (SQLException e) {
e.printStackTrace();
}
}
3. 调用测试
public static void main(String[] args) {
IStudentDAO dao = new IStudentDAOImpl();
for(Student stu : dao.queryAllStudent()) {
System.out.println(stu);
}
//更新sid为3的数据
Student student = new Student();
student.setName("子浩");
student.setBirth(Date.valueOf("2018-01-25"));
student.setMajor("数学");
student.setScore(100);
student.setSid(3);
dao.updateStudentById(student);
System.out.println("###########################");
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:天天, major:数学, birth:Thu Mar 22 00:00:00 CST 2018, score:80.0]
###########################
[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]