实体类：
package entity;
public class userfo {
private int id;//id
private String name;//用户名
private String password;//密码
private String sex;//性别
private String phone;//电话号
private String fdate;//日期
private String adress;//地址
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
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;
}
public String getSex() {
return sex;
}
public void setSex(String sex) {
this.sex = sex;
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone;
}
public String getFdate() {
return fdate;
}
public void setFdate(String fdate) {
this.fdate = fdate;
}
public String getAdress() {
return adress;
}
public void setAdress(String adress) {
this.adress = adress;
}
}三层架构：
public class UserDaoImpl extends sqlser implements UserDao {
Connection con = null;
PreparedStatement st = null;
ResultSet rs = null;
/*
* 登入方法
* (non-Javadoc)
* @see dao.UserDao#Login(entity.userfo)
*/
public int Login(userfo user) {
// TODO Auto-generated method stub
int flag=0;
con = this.getConnection();
String sql = "select * from userfo where name = ? and password = ?";
try {
st = con.prepareStatement(sql);
st.setString(1, user.getName());
st.setString(2, user.getPassword());
rs = st.executeQuery();
if(rs!=null && rs.next()){
flag=1;
}
} catch (SQLException e) {
e.printStackTrace();
}finally {
this.ShiFang(rs, st, con);
}
return flag;
}/**
* 登入
* @author Administrator
*
*/
public interface UserBiz { public int Login(userfo user); }
package BaseDao;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement; public class sqlser { //数据库初始化
String driver="oracle.jdbc.driver.OracleDriver";
String url="jdbc:oracle:thin:@localhost:1521:ORCL";
String user = "epet";
String pwd = "123456"; //获取连接
public Connection getConnection(){ try { Class.forName(driver);
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} Connection con =null; try {
con =DriverManager.getConnection(url,user,pwd); } catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace(); }
return con;
} //======释放连接======= public void ShiFang(ResultSet rs, Statement st,Connection con){ try {
if(rs!=null){
rs.close();
}if(st!=null){
st.close();
}if(con!=null){
con.close(); }
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
} }
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
"http://struts.apache.org/dtds/struts-2.3.dtd">
<struts>
<!-- 配置包信息 -->
<package name="default" namespace="/" extends="struts-default">
<!-- 配置Action：关联Action JavaBean -->
<action name="longinAct" class="Action.LoginAction">
<!-- 指定返回的视图 ;默认使用转发-->
<result name="input">/error.jsp</result> <result name="success">/success.jsp</result> </action>
</package>
</struts>
package Action; import java.util.Map; import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession; import org.apache.struts2.ServletActionContext;
import org.apache.struts2.interceptor.ApplicationAware;
import org.apache.struts2.interceptor.SessionAware; import biz.UserBiz;
import biz.impl.UserBizImpl; import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven; import dao.UserDao;
import dao.UserDaoImpl; import entity.userfo; /**
*
* @author Administrator
*
*/ public class LoginAction extends ActionSupport implements ModelDriven,SessionAware,ApplicationAware{
private userfo user=new userfo();
private Map<String,Object> sessionM;
private Map<String,Object> applicationM;
public Object getModel() {
// TODO Auto-generated method stub
return user;
} public void setSession(Map<String, Object> arg0) {
// TODO Auto-generated method stub
sessionM=arg0;
} public void setApplication(Map<String, Object> arg0) {
// TODO Auto-generated method stub
applicationM=arg0;
} @Override
public String execute() throws Exception{
UserDao dao=new UserDaoImpl();
// 通过ActionContext获取MAP类型的Session
ActionContext ac=ActionContext.getContext(); sessionM=ac.getSession(); sessionM.put("name",user.getName()); sessionM.put("user",user);
// 通过控制反转方法 获取MAP类型的Session sessionM.put("name", user.getName()); sessionM.put("password", user.getPassword()); sessionM.put("user", user); String name=(String)sessionM.get("name"); String pwd=(String)sessionM.get("password"); userfo a=new userfo(); a.setName(name); a.setPassword(pwd); int flag=dao.Login(a); if(flag>0){ if(applicationM.get("count")==null){ applicationM.put("count", 1); }else{ int count=Integer.parseInt(applicationM.get("count").toString()); applicationM.put("count", count+1); }
return SUCCESS; }else{ return INPUT; } }
}
登入页面、成功页面、失败页面
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>"> <title>Struts2Demo</title> </head> <body>
<s:form action="longinAct" method="post">
<s:textfield name="name" label="用户名"></s:textfield>
<s:password name="password" label="密码"></s:password>
<s:submit value="登陆"> </s:submit>
</s:form> </body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>"> <title>My JSP 'success.jsp' starting page</title> <meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
--> </head> <body>
<H1> 用户名： <s:property value="name" /> <br /> 密码： <s:property value="password" /> <br /> 登陆成功！ <br> 从SESSION中获取值(jsp方式)：用户名： <%=session.getAttribute("name")%><br> </H1>
从SESSION中获取值(struts方式)：用户名： <s:property value="#session.name" /> <br> 访问次数： <s:property value="#application.count" />
</body> </html>
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>"> <title>My JSP 'error.jsp' starting page</title> <meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
--> </head> <body>
用户名： <s:property value="name" /> <br />
密 码： <s:property value="password" /> <br />
<H1>登陆失败！ </H1>
</body>
</html>