急求用javaWeb做个注册页面的方法

我写好了javabean 数据库也连接上了注册页面左好了但是数据库的整间改查如何写啊不要说按平常些就行了具体代码啊还有servlet 如何控制啊小弟初学谢谢各位大侠了啊最后就是注册信息都写完了然后点击提交信息就保存到数据库了 --------------------编程问答-------------------- 急求啊谢谢大侠们啊
--------------------编程问答-------------------- 我的邮箱是982857647@qq.com 发到邮箱也行我结账 --------------------编程问答-------------------- 写一个User的JavaBean封装好，然后写一个UserDAO用来对用户的增删改查，注册的时候在Serlvet中把JSP提交过来的参数获得，然后new一个User类，把信息都set到这个User类里面，然后利用UserDAO的添加用户的方法比如（public int addUser(User user)），在Servlet里面调用该addUser方法来判断是否成功插入数据，int返回值代表数据库受影响的行数,如果成功就跳转到成功页面，否则提示失败等等，思路大致就这样 --------------------编程问答-------------------- public void service(ServletRequest arg0, ServletResponse arg1)
throws ServletException, IOException {
//获得客户端提交的姓名和密码
String name=arg0.getParameter("name");
String pwd=arg0.getParameter("pwd");
//调用Dao
RegDao regdao=new RegDao();
regDao.reg(name,pwd);

} --------------------编程问答-------------------- 楼上的是servlert,这是你要的增删改查
public class UserDAOImpl implements UserDAO {

public boolean delete(String id) {
String sql_del="delete from a where a.id in("+id+")";
boolean flag=false;
Connection connection=DataSourceFactory.getConnection();
try {
PreparedStatement ps=connection.prepareStatement(sql_del);
// ps.setString(1, id);
int i=ps.executeUpdate();
if(i!=0){
flag=true;
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

return flag;
}

private String sql_getAllUser="select * from a";
public ArrayList getUser() {
ArrayList arrayList=new ArrayList();
Connection connection=DataSourceFactory.getConnection();
try {
PreparedStatement preparedStatement=connection.prepareStatement(sql_getAllUser);
ResultSet rs=preparedStatement.executeQuery();
while(rs.next()){
User user=new User();
user.setId(rs.getInt("id"));
user.setName(rs.getString("name"));
user.setAge(rs.getInt("age"));
user.setTime(rs.getString("time"));
arrayList.add(user);
}
} catch (SQLException e) {
e.printStackTrace();
}finally{
if(connection!=null){
try {
connection.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
return arrayList;
}

private String sql_sel="select * from a where id=?";
public User getUserById(int id) {
Connection connection=DataSourceFactory.getConnection();
User user=new User();
try {
PreparedStatement ps=connection.prepareStatement(sql_sel);
ps.setInt(1, id);
ResultSet rs=ps.executeQuery();
while(rs.next()){
user.setId(rs.getInt("id"));
user.setName(rs.getString("name"));
user.setAge(rs.getInt("age"));
user.setTime(rs.getString("time"));
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
try {
connection.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return user;
}

private String sql_insert="insert into a(id,name,age,time) values(?,?,?,?)";
public boolean inser(User user) {
boolean flag=false;
Connection connection=DataSourceFactory.getConnection();
try {
PreparedStatement ps=connection.prepareStatement(sql_insert);
ps.setInt(1, user.getId());
ps.setString(2, user.getName());
ps.setInt(3, user.getAge());
ps.setString(4, user.getTime());
int t=ps.executeUpdate();
if(t!=0){
flag=true;
}
} catch (SQLException e) {
e.printStackTrace();
}finally{
try {
connection.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return flag;
}

private String sql_getId="select a_seq.nextval as id from dual";
public int getId() {
Connection connection=DataSourceFactory.getConnection();
int id=0;
try {
PreparedStatement ps=connection.prepareStatement(sql_getId);
ResultSet rs=ps.executeQuery();
while(rs.next()){
id=rs.getInt("id");
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
try {
connection.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return id;
}
private String sql_edit="update a set a.name=?,a.age=?,a.time=? where a.id=?";
public boolean edit(User user) {
boolean flag=false;
Connection connection=DataSourceFactory.getConnection();
try {
PreparedStatement ps=connection.prepareStatement(sql_edit);
ps.setString(1, user.getName());
ps.setInt(2, user.getAge());
ps.setString(3, user.getTime());
ps.setInt(4, user.getId());
int i=ps.executeUpdate();
if(i!=0){
flag=true;
}
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
try {
connection.close();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

return flag;
}

} --------------------编程问答-------------------- --------------------编程问答--------------------

补充：Java ,  Web 开发