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 <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>
<?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>
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; } }
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(); } }
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; } }
<?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>
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; } }
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; } }
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>
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; } }
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; } }
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>
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>
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>
<?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>
<?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>
<?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>
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; } }
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; } }