Java code//实体类
public class User {
String name;
String password;
public User(){
}
public User(String name, String password) {
super();
this.name = name;
this.password = password;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
//Dao 类
public class UserDao {
public User findUserByName(String username){
return new User(username, "password");
}
public boolean addUser(User user){
// do something...
return true;
}
}
//Bo 类
public class UserBo {
private UserDao dao = new UserDao();
public boolean login(String username,String password){
User u = dao.findUserByName(username);
if( u != null && u.getPassword().equals(password)){
return true;
}
return false;
}
public boolean addUser(User user){
return dao.addUser(user);
}
}
//Servlet
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class Login extends HttpServlet {
private UserBo bo = new UserBo();
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
this.doPost(request, response);
}
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String username = request.getParameter("username");
String password = request.getParameter("password");
boolean b = bo.login(username, password);
if( b ){
request.setAttribute("user", username);
response.sendRedirect("loginSuccess.jsp");
}else{
response.sendRedirect("loginError.jsp");
}
}
}
)
