java web分层之——3层架构
3层架构，JSP+servlet+业务逻辑层
login.jsp
?web.xml?DoLoginServlet.javapackage model;public class UserService {public boolean login(String username,String password) { return ("黄启庆".equals(username) && "123456".equals(password));}}?
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web.xml
?DoLoginServlet.javapackage model;public class UserService {public boolean login(String username,String password) { return ("黄启庆".equals(username) && "123456".equals(password));}}?
DoLoginServlet.java
package model;public class UserService {public boolean login(String username,String password) { return ("黄启庆".equals(username) && "123456".equals(password));}}
