如何使用JdbcTemplate实现数据的增删改查?

一、Service层

StudentService代码

@Service
public class StudentService implements  IStudentSrvice {

    @Autowired
    private IStudentDao studentDao;

    public int add(String mobile,String name) {
        String id= UUID.randomUUID().toString();
        return studentDao.add(id, name, mobile);
    }

    public int delete(String id){
        return studentDao.delete(id);
    }

    public int update(String id,String name,String mobile){
        return  studentDao.update(id,name,mobile);
    }

    public Student get(String id){
        return studentDao.get(id);
    }
}

IStudentService代码

public interface IStudentSrvice {

    int add(String mobile,String name);

    int delete(String id);

    int update(String id,String name,String mobile);

    Student get(String id);


}

二、Dao层

StudentDao代码

@Repository
public class StudentDao implements  IStudentDao{

   @Autowired
   private JdbcTemplate jdbcTemplate;

   //增
   public int add(String id,String mobile,String name){

       String sql = "insert into student(id,name,mobile) values(?,?,?)";
       if(jdbcTemplate.update(sql,id,name,mobile)>0){
           return 1;
       }else {
           return  0;
       }
   }

   //删
   public int delete(String id){

        String sql = "delete from student where id=?";

        if(jdbcTemplate.update(sql,id)>0){
            return 1;
        }else{
            return 0;
        }
    }

    //改
    public int update(String id,String name,String mobile){

       String sql = "update student set name=?,mobile=? where id=?";
       if(jdbcTemplate.update(sql,id,name,mobile)>0){
           return 1;
       }else{
           return 0;
       }
   }

    //查
    public Student get(String id){

       String sql = "select * from student where id=?";
       return jdbcTemplate.queryForObject(sql,new RowMapper<Student>() {
           @Override
           public Student mapRow(ResultSet rs, int i) throws SQLException {
               return new Student(rs.getString("id"),rs.getString("name"),rs.getString("mobile"));
           }
       },id);
    }
}

IStudentDao代码

public interface IStudentDao {

    int add(String id,String mobile,String name);

    int delete(String id);

    int update(String id ,String name,String mobile);

    Student get(String id);
}