简单的界面登录实现（struts+hibernate实现）

#创建表User

CREATE TABLE USEE(ID int(11),NUM VARCHAR(45),NAME VARCHAR(45),PASSWORD VARCHAR(45),PRIMARY KEY (ID))

在编译器中生成相应的bean类以及映射xml(也可以使用注解)

public class Usee implements Serializable {    private int ID;    private String num;    private String name;    private String password;    public Usee() {    }    public int getID() {        return ID;    }    public String getNum() {        return num;    }    public String getName() {        return name;    }    public String getPassword() {        return password;    }    public void setID(int ID) {        this.ID = ID;    }    public void setNum(String num) {        this.num = num;    }    public void setName(String name) {        this.name = name;    }    public void setPassword(String password) {        this.password = password;    }}xml:<?xml version='1.0' encoding='utf-8'?><!DOCTYPE hibernate-mapping PUBLIC        "-//Hibernate/Hibernate Mapping DTD 3.0//EN"        "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd" ><hibernate-mapping>    <class name="lee.Hibernate.Usee" table="USEE">        <id name="ID" type="java.lang.Integer" column="ID">            <generator class="increment"></generator>        </id>        <property name="name" type="java.lang.String" column="NAME" length="45"/>        <property name="num" type="java.lang.String" column="NUM" length="45"/>        <property name="password" type="java.lang.String" column="PASSWORD" length="45"/>     </class></hibernate-mapping>

添加hibernate.cfg.xml配置

<?xml version='1.0' encoding='utf-8'?><!DOCTYPE hibernate-configuration PUBLIC        "-//Hibernate/Hibernate Configuration DTD//EN"        "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd"><hibernate-configuration>    <session-factory>        <!--配置数据库JDBS的驱动-->        <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>        <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/leehuan</property>        <property name="hibernate.connection.username">root</property>        <property name="hibernate.connection.password">lihuan</property>        <property name="connection.pool_size">1</property>        <property name="dialect">org.hibernate.dialect.MySQLDialect</property>        <property name="current_session_context_class">thread</property> <!--全局事务-->        <property name="connection.isolation">4</property> <!--设定隔离级别-->        <property name="connection.driver_class">com.mysql.jdbc.Driver</property>        <property name="show_sql">true</property>        <property name="format_sql">true</property>        <mapping resource="Usee-hbm.xml"/>        <mapping resource="User-hbm.xml"/>    </session-factory></hibernate-configuration>

然后开始生成Action

package lee.struts;import com.opensymphony.xwork2.ActionContext;import com.opensymphony.xwork2.ActionSupport;import lee.Hibernate.Usee;import lee.Hibernate.User;import lee.Hibernate.UserDAO;import org.apache.commons.logging.Log;import org.apache.struts2.ServletActionContext;import javax.servlet.http.HttpServletRequest;/** * Created by user on 16-12-22. */public class LoginAction extends ActionSupport {    private String name;    private String pwd;    public String getName() {        return name;    }    public String getPwd() {        return pwd;    }    public void setName(String name) {        this.name = name;    }    public void setPwd(String pwd) {        this.pwd = pwd;    }    @Override    public String execute() throws Exception {        Login();        return super.execute();    }    public String Login(){        ActionContext context = ActionContext.getContext();        HttpServletRequest request = ServletActionContext.getRequest();        String name = (String) request.getParameter("name");        String pwd = (String) request.getParameter("pwd");        if (name.isEmpty() || pwd.isEmpty()){            return ERROR;        }else {            Usee login = UserDAO.login(name, pwd);            if(login!=null){                return SUCCESS;            }else {                return ERROR;            }        }    }}

其中的UserDao.Login(name,pwd)用来进行传值，同时进行数据库的查询

public class UserDAO {    public static Usee login(String name,String pwd){        Session session = HibernateUtls.getSession();        List<Usee> list = new ArrayList<>();        list = session.createQuery("from Usee u where u.name=? and u.password=?").setParameter(0,name).setParameter(1,pwd).list();        if(list.size()!=0) {            Usee usee = list.get(0);            return usee;        }else {            return null;        }    }}

开始配置struts.xml

<?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>    <package name="default" namespace="/" extends="struts-default">        <action name="login" class="lee.struts.LoginAction">            <result name="success">/success.jsp</result>            <result name="error">/error.jsp</result>        </action>    </package></struts>

添加suceess.jsp与error.jsp,在index.jsp中添加form表单

index.jsp:<%@ taglib prefix="s" uri="/struts-tags" %><%--  Created by IntelliJ IDEA.  User: user  Date: 16-12-21  Time: 上午11:38  To change this template use File | Settings | File Templates.--%><%@ page contentType="text/html;charset=UTF-8" language="java" %><html>  <head>    <title>$Title$</title>  </head>  <body>      <s:form action="login" method="post" theme="simple">          <p align="center">              用户名:              <s:textfield name="name" size="8" theme="simple"></s:textfield><br>              密码:              <s:password name="pwd" size="8" theme="simple"></s:password><br>              <s:submit value="提交" method="Login"></s:submit>              <input type="reset" value="取消" name="sumit">          </p>      </s:form>  </body></html>success.jsp:<%@ taglib prefix="s" uri="/struts-tags" %><%--  Created by IntelliJ IDEA.  User: user  Date: 16-12-21  Time: 下午2:13  To change this template use File | Settings | File Templates.--%><%@ page contentType="text/html;charset=UTF-8" language="java" %><html><head>    <title>Title</title></head><body>    <h1>welcome <s:property value="name"></s:property></h1></body></html>error.jsp:<%--  Created by IntelliJ IDEA.  User: user  Date: 16-12-22  Time: 上午10:05  To change this template use File | Settings | File Templates.--%><%@ page contentType="text/html;charset=UTF-8" language="java" %><html><head>    <title>Title</title></head><body>    用户或密码错误,请点击<a href="index.jsp">返回</a>重新登录</body></html>