Struts2与后台(数据库等)交互方式

 

Struts2应用的分层体系架构：

action-->service(接口)-->DAO

------------------------------------------------------

LoginService  (interface):

public interface LoginService
{
 public boolean isLogin(String username,String password);
 

}

LoginServiceImpl.java

package com.shengsiyuan.impl;

import com.shengsiyuan.service.LoginService;
import com.sun.org.apache.regexp.internal.recompile;

public class LoginServiceImpl implements LoginService
{
 public boolean isLogin(String username, String password)
 {
  if("hello".equals(username) && "world".equals(password))
  {
   return true ;
  }
  return false ;
 }

}

LoginAction.java

private LoginService loginService = new LoginServiceImpl() ;

public String execute() throws Exception //有业务逻辑的验证放在这里，而不放在validate里
 {
  if(this.loginService.isLogin(username, password))
  {
   return SUCCESS ;
  }
  return INPUT ;
 }

struts.xml

 
   /result.jsp
   /login.jsp