JavaWeb_(Spring框架)在Struts+Hibernate框架中引入Spring框架

　　spring的功能：简单来说就是帮我们new对象，什么时候new对象好，什么时候销毁对象。

　　在MySQL中添加spring数据库，添加user表，并添加一条用户数据

　　使用struts + hibernate框架实现用户登陆功能：当用户在login.jsp中账号密码输入错误，重定向login.jsp，并提示用户输入账号、密码错误，如果用户在login.jsp中账号密码输入正确，跳转到index.html

<%@ page language="java" contentType="text/html; charset=UTF-8"

    pageEncoding="UTF-8"%>

<%@taglib prefix="s" uri="/struts-tags" %>

<!DOCTYPE html>

<html>

<head>

<meta charset="UTF-8">

<link rel="stylesheet" href="css/head.css" />

<link rel="stylesheet" type="text/css" href="css/login.css" />

</head>

<body>

    <div class="dvhead">

        <div class="dvlogo">

            <a href="index.html">你问我答</a>

        </div>

        <div class="dvsearch">10秒钟注册账号，找到你的同学</div>

        <div class="dvreg">

            已有账号，立即&nbsp;<a href="login.html">登录</a>

        </div>

    </div>

    <section class="sec">

        <form action="${pageContext.request.contextPath }/UserAction_login" method="post">

            <div class="register-box">

                <label for="username" class="username_label"> 用 户 名 <input

                    maxlength="20" name="username" type="text" placeholder="您的用户名和登录名" />

                </label>

                <div class="tips"></div>

            </div>

            <div class="register-box">

                <label for="username" class="other_label"> 密 码 <input

                    maxlength="20" type="password" name="password"

                    placeholder="建议至少使用两种字符组合" />

                </label>

                <div class="tips"></div>

            </div>

            <div class="arguement">

                <input type="checkbox" id="xieyi" /> 阅读并同意 <a

                    href="javascript:void(0)">《你问我答用户注册协议》</a> <a href="register.html">没有账号,立即注册</a>

                <div class="tips" style="color: red" > <s:property value="#error"/> </div>

            </div>

            <div class="submit_btn">

                <button type="submit" id="submit_btn">立 即 登录</button>

            </div>

        </form>

    </section>

    <script src="js/index.js" type="text/javascript" charset="utf-8"></script>

</body>

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE struts PUBLIC

    "-//Apache Software Foundation//DTD Struts Configuration 2.5//EN"

    "http://struts.apache.org/dtds/struts-2.5.dtd">

<struts>

    <constant name="struts.devMode" value="true"></constant>

    <constant name="struts.enable.DynamicMethodInvocation" value="true"></constant>

    <package name="spring" namespace="/" extends="struts-default">

        <global-allowed-methods>regex:.*</global-allowed-methods>

        <action name="UserAction_*" class="com.Gary.web.UserAction" method="{1}">

            <result name="login">/login.jsp</result>

            <result name="toIndex" type="redirect">/index.html</result>

        </action>

    </package>

</struts>

struts.xml

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE hibernate-configuration PUBLIC

    "-//Hibernate/Hibernate Configuration DTD 3.0//EN"

    "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

<hibernate-configuration>

    <session-factory>

        <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>

        <property name="hibernate.connection.url">jdbc:mysql:///spring</property>

        <property name="hibernate.connection.username">root</property>

        <property name="hibernate.connecton.password">123456</property>

        <property name="hibernate.dialect">org.hibernate.dialect.MySQL5InnoDBDialect</property>

        <property name="hibernate.show_sql">true</property>

        <property name="hibernate.format_sql">true</property>

        <property name="hibernate.hbm2ddl.auto">update</property>

        <!-- 隔离级别 不可重复读 -->

        <property name="hibernate.connection.isolation">4</property>

        <property name="hibernate.current_session_context_class">thread</property>

        <mapping resource="com/Gary/domain/User.hbm.xml"/>

    </session-factory>

</hibernate-configuration>

hibernate.cfg.xml

package com.Gary.web;

import com.Gary.domain.User;

import com.Gary.service.UserService;

import com.opensymphony.xwork2.ActionContext;

import com.opensymphony.xwork2.ActionSupport;

import com.opensymphony.xwork2.ModelDriven;

public class UserAction extends ActionSupport implements ModelDriven<User>{

    public User user = new User();

    public String login() throws Exception {

        UserService userService = new UserService();

        boolean success = userService.findUser(user);

        if(success)

        {

            return "toIndex";

        }else {

            ActionContext.getContext().put("error", "用户名或者密码错误！！");

            return "login";

        }

    }

    @Override

    public User getModel() {

        return user;

    }

}

UserAction.java

package com.Gary.utils;

import org.hibernate.Session;

import org.hibernate.SessionFactory;

import org.hibernate.cfg.Configuration;

public class HibernateUtils {

    private static SessionFactory sessionFactory = null;

    static {

        Configuration config = new Configuration().configure();

        sessionFactory = config.buildSessionFactory();

    }

    public static Session getSession()

    {

        return sessionFactory.openSession();

    }

    public static Session getCurrentSession()

    {

        return sessionFactory.getCurrentSession();

    }

}

HibernateUtils.java

package com.Gary.service;

import org.hibernate.Transaction;

import com.Gary.dao.UserDao;

import com.Gary.domain.User;

import com.Gary.utils.HibernateUtils;

public class UserService {

    public boolean findUser(User user) {

        UserDao userDao = new UserDao();

        Transaction beginTransaction = HibernateUtils.getCurrentSession().beginTransaction();

        User temp = null;

        try {

            temp = userDao.findUser(user);

        }catch(Exception e){

            beginTransaction.rollback();

        }

        beginTransaction.commit();

        return temp==null?false:true;

    }

}

UserService.java

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE hibernate-mapping PUBLIC

    "-//Hibernate/Hibernate Mapping DTD 3.0//EN"

    "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">

<hibernate-mapping package="com.Gary.domain">

    <class name="User" table="user">

        <id name="id">

            <generator class="uuid"></generator>

        </id>

        <property name="username" column="username"></property>

        <property name="password" column="password"></property>

    </class>

</hibernate-mapping>

User.hbm.xml

package com.Gary.domain;

public class User {

    private String id;

    private String username;

    private String password;

    public String getId() {

        return id;

    }

    public void setId(String id) {

        this.id = id;

    }

    public String getUsername() {

        return username;

    }

    public void setUsername(String username) {

        this.username = username;

    }

    public String getPassword() {

        return password;

    }

    public void setPassword(String password) {

        this.password = password;

    }

}

User.java

package com.Gary.dao;

import org.hibernate.Session;

import org.hibernate.query.NativeQuery;

import com.Gary.domain.User;

import com.Gary.utils.HibernateUtils;

public class UserDao {

    public User findUser(User user) {

        Session session = HibernateUtils.getCurrentSession();

        //sql操作数据库

        String sql = "select * from user where username = ? and password = ?";

        NativeQuery sqlQuery = session.createSQLQuery(sql);

        sqlQuery.addEntity(User.class);

        sqlQuery.setParameter(1, user.getUsername());

        sqlQuery.setParameter(2, user.getPassword());

        User result = (User) sqlQuery.uniqueResult();

        return result;

    }

}

UserDao.java

　　Spring介入，启动Spring，在web.xml中进行配置

     <!-- 让spring随着web项目的启动而启动 -->

    <listener>

        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

    </listener>

    <!-- 配置spring配置文件的位置 -->

    <context-param>

        <param-name>contextConfiguration</param-name>

        <param-value>classpath:applicationContext.xml</param-value>

    </context-param>

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">

  <display-name>Spring</display-name>

  <welcome-file-list>

    <welcome-file>index.html</welcome-file>

    <welcome-file>index.htm</welcome-file>

    <welcome-file>index.jsp</welcome-file>

    <welcome-file>default.html</welcome-file>

    <welcome-file>default.htm</welcome-file>

    <welcome-file>default.jsp</welcome-file>

  </welcome-file-list>

     <!-- 让spring随着web项目的启动而启动 -->

    <listener>

        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

    </listener>

    <!-- 配置spring配置文件的位置 -->

    <context-param>

        <param-name>contextConfiguration</param-name>

        <param-value>classpath:applicationContext.xml</param-value>

    </context-param>

  <filter>

  <filter-name>struts</filter-name>

  <filter-class>org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter</filter-class>

  </filter>

  <filter-mapping>

  <filter-name>struts</filter-name>

  <url-pattern>/*</url-pattern>

  </filter-mapping>

</web-app>

web.xml

　　修改UserService.java和UserDao，不用再UserAction中使用UserService userService = new UserService()，使用Spring框架帮我们new对象

package com.Gary.web;

import com.Gary.domain.User;

import com.Gary.service.UserService;

import com.opensymphony.xwork2.ActionContext;

import com.opensymphony.xwork2.ActionSupport;

import com.opensymphony.xwork2.ModelDriven;

public class UserAction extends ActionSupport implements ModelDriven<User>{

    public User user = new User();

    private UserService userService;

    public String login() throws Exception {

        boolean success = userService.findUser(user);

        if(success)

        {

            return "toIndex";

        }else {

            ActionContext.getContext().put("error", "用户名或者密码错误！！");

            return "login";

        }

    }

    @Override

    public User getModel() {

        return user;

    }

    public UserService getUserService() {

        return userService;

    }

    public void setUserService(UserService userService) {

        this.userService = userService;

    }

}

UserAction.java

package com.Gary.service;

import org.hibernate.Transaction;

import com.Gary.dao.UserDao;

import com.Gary.domain.User;

import com.Gary.utils.HibernateUtils;

public class UserService {

    private UserDao userDao;

    public boolean findUser(User user) {

        Transaction beginTransaction = HibernateUtils.getCurrentSession().beginTransaction();

        User temp = null;

        try {

            temp = userDao.findUser(user);

        }catch(Exception e){

            beginTransaction.rollback();

        }

        beginTransaction.commit();

        return temp==null?false:true;

    }

    public UserDao getUserDao() {

        return userDao;

    }

    public void setUserDao(UserDao userDao) {

        this.userDao = userDao;

    }

}

UserService.java

　　applicationContext.xml中进行Action、Service的配置，Dao暂时不配置

    <!-- 配置Action -->

    <bean name = "userAction" class="com.Gary.web.UserAction" scope="prototype">

        <property name="userService" ref="userService"></property>

    </bean>

    <!-- 配置Service -->

    <bean name="userService" class="com.Gary.service.UserService">

        <property name="userDao" ref="userDao"></property>

    </bean>

    <!-- 配置Dao -->

    <bean name="userDao" class="com.Gary.dao.UserDao">

    </bean>

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xmlns:context="http://www.springframework.org/schema/context"

    xmlns:aop="http://www.springframework.org/schema/aop"

    xmlns:tx="http://www.springframework.org/schema/tx"

    xsi:schemaLocation="http://www.springframework.org/schema/beans

    http://www.springframework.org/schema/beans/spring-beans.xsd

    http://www.springframework.org/schema/context

    http://www.springframework.org/schema/context/spring-context.xsd

    http://www.springframework.org/schema/aop

    http://www.springframework.org/schema/aop/spring-aop.xsd

    http://www.springframework.org/schema/tx

    http://www.springframework.org/schema/tx/spring-tx.xsd">

    <!-- 配置Action -->

    <bean name = "userAction" class="com.Gary.web.UserAction" scope="prototype">

        <property name="userService" ref="userService"></property>

    </bean>

    <!-- 配置Service -->

    <bean name="userService" class="com.Gary.service.UserService">

        <property name="userDao" ref="userDao"></property>

    </bean>

    <!-- 配置Dao -->

    <bean name="userDao" class="com.Gary.dao.UserDao">

    </bean>

</beans>

applicationContext.xml

　　在struts.xml中告诉struts不用创建Action，sping来帮你创建Action

　　<!-- 告诉struts，你不用创建Action，sping来帮你创建Action -->

　　<constant name="struts.objectFactory" value="spring"></constant>

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE struts PUBLIC

    "-//Apache Software Foundation//DTD Struts Configuration 2.5//EN"

    "http://struts.apache.org/dtds/struts-2.5.dtd">

<struts>

    <constant name="struts.devMode" value="true"></constant>

    <constant name="struts.enable.DynamicMethodInvocation" value="true"></constant>

    <!-- 告诉struts，你不用创建Action，sping来帮你创建Action -->

    <constant name="struts.objectFactory" value="spring"></constant>

    <package name="spring" namespace="/" extends="struts-default">

        <global-allowed-methods>regex:.*</global-allowed-methods>

        <action name="UserAction_*" class="com.Gary.web.UserAction" method="{1}">

            <result name="login">/login.jsp</result>

            <result name="toIndex" type="redirect">/index.html</result>

        </action>

    </package>

</struts>

struts.xml

　　引入Spring框架，添加applicationContext.xml

　　（引入Spring框架后修改过的一些东西）

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" id="WebApp_ID" version="3.1">

  <display-name>Spring</display-name>

  <welcome-file-list>

    <welcome-file>index.html</welcome-file>

    <welcome-file>index.htm</welcome-file>

    <welcome-file>index.jsp</welcome-file>

    <welcome-file>default.html</welcome-file>

    <welcome-file>default.htm</welcome-file>

    <welcome-file>default.jsp</welcome-file>

  </welcome-file-list>

     <!-- 让spring随着web项目的启动而启动 -->

    <listener>

        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>

    </listener>

    <!-- 配置spring配置文件的位置 -->

    <context-param>

        <param-name>contextConfigLocation</param-name>

        <param-value>classpath:applicationContext.xml</param-value>

    </context-param>

  <filter>

  <filter-name>struts</filter-name>

  <filter-class>org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter</filter-class>

  </filter>

  <filter-mapping>

  <filter-name>struts</filter-name>

  <url-pattern>/*</url-pattern>

  </filter-mapping>

</web-app>

web.xml

<?xml version="1.0" encoding="UTF-8"?>

<beans xmlns="http://www.springframework.org/schema/beans"

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xmlns:context="http://www.springframework.org/schema/context"

    xmlns:aop="http://www.springframework.org/schema/aop"

    xmlns:tx="http://www.springframework.org/schema/tx"

    xsi:schemaLocation="http://www.springframework.org/schema/beans

    http://www.springframework.org/schema/beans/spring-beans.xsd

    http://www.springframework.org/schema/context

    http://www.springframework.org/schema/context/spring-context.xsd

    http://www.springframework.org/schema/aop

    http://www.springframework.org/schema/aop/spring-aop.xsd

    http://www.springframework.org/schema/tx

    http://www.springframework.org/schema/tx/spring-tx.xsd">

    <!-- 配置Action -->

    <bean name = "userAction" class="com.Gary.web.UserAction" scope="prototype">

        <property name="userService" ref="userService"></property>

    </bean>

    <!-- 配置Service -->

    <bean name="userService" class="com.Gary.service.UserService">

        <property name="userDao" ref="userDao"></property>

    </bean>

    <!-- 配置Dao -->

    <bean name="userDao" class="com.Gary.dao.UserDao">

    </bean>

</beans>

applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE hibernate-configuration PUBLIC

    "-//Hibernate/Hibernate Configuration DTD 3.0//EN"

    "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">

<hibernate-configuration>

    <session-factory>

        <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>

        <property name="hibernate.connection.url">jdbc:mysql:///spring</property>

        <property name="hibernate.connection.username">root</property>

        <property name="hibernate.connecton.password">123456</property>

        <property name="hibernate.dialect">org.hibernate.dialect.MySQL5InnoDBDialect</property>

        <property name="hibernate.show_sql">true</property>

        <property name="hibernate.format_sql">true</property>

        <property name="hibernate.hbm2ddl.auto">update</property>

        <!-- 隔离级别 不可重复读 -->

        <property name="hibernate.connection.isolation">4</property>

        <property name="hibernate.current_session_context_class">thread</property>

        <mapping resource="com/Gary/domain/User.hbm.xml"/>

    </session-factory>

</hibernate-configuration>

hibernate.cfg.xml

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE struts PUBLIC

    "-//Apache Software Foundation//DTD Struts Configuration 2.5//EN"

    "http://struts.apache.org/dtds/struts-2.5.dtd">

<struts>

    <constant name="struts.devMode" value="true"></constant>

    <constant name="struts.enable.DynamicMethodInvocation" value="true"></constant>

    <!-- 告诉struts，你不用创建Action，sping来帮你创建Action -->

    <constant name="struts.objectFactory" value="spring"></constant>

    <package name="spring" namespace="/" extends="struts-default">

        <global-allowed-methods>regex:.*</global-allowed-methods>

        <action name="UserAction_*" class="com.Gary.web.UserAction" method="{1}">

            <result name="login">/login.jsp</result>

            <result name="toIndex" type="redirect">/index.html</result>

        </action>

    </package>

</struts>

struts.xml

package com.Gary.web;

import com.Gary.domain.User;

import com.Gary.service.UserService;

import com.opensymphony.xwork2.ActionContext;

import com.opensymphony.xwork2.ActionSupport;

import com.opensymphony.xwork2.ModelDriven;

public class UserAction extends ActionSupport implements ModelDriven<User>{

    public User user = new User();

    private UserService userService;

    public String login() throws Exception {

        boolean success = userService.findUser(user);

        if(success)

        {

            return "toIndex";

        }else {

            ActionContext.getContext().put("error", "用户名或者密码错误！！");

            return "login";

        }

    }

    @Override

    public User getModel() {

        return user;

    }

    public UserService getUserService() {

        return userService;

    }

    public void setUserService(UserService userService) {

        this.userService = userService;

    }

}

UserAction.java

package com.Gary.service;

import org.hibernate.Transaction;

import com.Gary.dao.UserDao;

import com.Gary.domain.User;

import com.Gary.utils.HibernateUtils;

public class UserService {

    private UserDao userDao;

    public boolean findUser(User user) {

        Transaction beginTransaction = HibernateUtils.getCurrentSession().beginTransaction();

        User temp = null;

        try {

            temp = userDao.findUser(user);

        }catch(Exception e){

            beginTransaction.rollback();

        }

        beginTransaction.commit();

        return temp==null?false:true;

    }

    public UserDao getUserDao() {

        return userDao;

    }

    public void setUserDao(UserDao userDao) {

        this.userDao = userDao;

    }

}

UserService.java

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