Spring mvc+hibernate框架 mysql数据库 自学后造一遍轮子

项目文件结构，用maven管理

一、配置springmvc，主要配置视图解析，前缀后缀和包的自动扫描

<?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:mvc="http://www.springframework.org/schema/mvc"    xmlns:context="http://www.springframework.org/schema/context"    xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd        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-4.1.xsd">    <context:component-scan base-package="com.xianbao">        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>        <context:include-filter type="annotation" expression="org.springframework.web.bind.annotation.ControllerAdvice"/>    </context:component-scan>    <mvc:default-servlet-handler/>    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">        <property name="prefix" value="/"></property>        <property name="suffix" value=".jsp"></property>    </bean>    <mvc:annotation-driven/></beans>

二、配置数据库连接

<?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:aop="http://www.springframework.org/schema/aop"    xmlns:context="http://www.springframework.org/schema/context"    xmlns:tx="http://www.springframework.org/schema/tx"    xmlns:p="http://www.springframework.org/schema/p"    xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans.xsd        http://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context-4.1.xsd        http://www.springframework.org/schema/aophttp://www.springframework.org/schema/aop/spring-aop-4.1.xsd        http://www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx-4.1.xsd" >    <!-- 导入资源文件 -->    <context:property-placeholder location="classpath:jdbc.properties" ignore-unresolvable="true"/>    <!-- 配置数据源 -->    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">        <property name="driverClass" value="com.mysql.jdbc.Driver" /><property name="jdbcUrl" value="jdbc:mysql://localhost:3306/xianbao" /><property name="user" value="root" /><property name="password" value="123456" />        </bean>    <!-- 配置sessionFactory -->    <bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">        <property name="dataSource" ref="dataSource"></property>        <property name="hibernateProperties">            <props>                <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>                <prop key="hibernate.hbm2ddl.auto">update</prop>                <prop key="hibernate.show_sql">true</prop>                <prop key="hibernate.format_sql">true</prop>            </props>        </property>        <property name="packagesToScan" value="com.xianbao.*"></property>    </bean>    <!-- 配置要扫描的注解 -->    <context:component-scan base-package="com.xianbao.*" use-default-filters="false">        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>        <context:exclude-filter type="annotation" expression="org.springframework.web.bind.annotation.ControllerAdvice"/>    </context:component-scan>        <!-- 启动AspectJ支持 -->    <aop:aspectj-autoproxy/>    <!-- 配置事务管理器 -->    <bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager">        <property name="sessionFactory" ref="sessionFactory"></property>    </bean>    <!-- 使用注解配置事务 -->    <tx:annotation-driven transaction-manager="transactionManager"/>       </beans>

三、配置web.xml文件，用来配置读取上边两个文件的路径，处理字符编码等。

<?xml version="1.0" encoding="UTF-8"?><web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">     <listener>        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>    </listener> <filter>    <filter-name>SetCharacterEncoding</filter-name>    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>    <init-param>      <param-name>encoding</param-name>      <param-value>UTF-8</param-value>    </init-param>  </filter>   <!-- needed for ContextLoaderListener -->    <context-param>        <param-name>contextConfigLocation</param-name>        <param-value>classpath:applicationContext.xml</param-value>    </context-param>    <!-- The front controller of this Spring Web application, responsible for handling all application requests -->    <servlet>        <servlet-name>springDispatcherServlet</servlet-name>        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>        <init-param>            <param-name>contextConfigLocation</param-name>            <param-value>classpath:springmvc.xml</param-value>        </init-param>        <load-on-startup>1</load-on-startup>    </servlet>    <!-- Map all requests to the DispatcherServlet for handling -->    <servlet-mapping>        <servlet-name>springDispatcherServlet</servlet-name>        <url-pattern>/</url-pattern>    </servlet-mapping>    <!-- 解决 org.hibernate.HibernateException:                  Could not obtain transaction-synchronized Session for current 出错问题 -->    <filter>        <filter-name>SpringOpenSessionInViewFilter</filter-name>        <filter-class>org.springframework.orm.hibernate4.support.OpenSessionInViewFilter</filter-class>    </filter>    <filter-mapping>        <filter-name>SpringOpenSessionInViewFilter</filter-name>        <url-pattern>/*</url-pattern>    </filter-mapping>        <filter>          <filter-name>characterEncodingFilter</filter-name>          <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>          <init-param>              <param-name>encoding</param-name>              <param-value>UTF-8</param-value>          </init-param>          <init-param>              <param-name>forceEncoding</param-name>              <param-value>true</param-value>          </init-param>      </filter>      <filter-mapping>          <filter-name>characterEncodingFilter</filter-name>          <url-pattern>/*</url-pattern>      </filter-mapping>          <welcome-file-list>    <welcome-file>index.html</welcome-file>  </welcome-file-list></web-app>

四、JSP文件，登陆和注册的页面，登陆和查询都是DAO层调用hibernate方法后返回布尔类型的值，查询是返回一个list。

<form action="doLogin" method="post">                <input type="text" name="UNAME" class="username" placeholder="请输入您的用户名！">                <input type="password" name="UPASS" class="password" placeholder="请输入您的用户密码！">                <button type="submit" class="submit_button">登录</button></form>

五、通过提交表单跳转到控制层UserHandler.java，下边两个是注册和查询个人信息，如果想通过EL表达式在JSP取值，可以用第三个方法，将list值取出。

package com.xianbao.handler;import java.util.ArrayList;import java.util.List;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpSession;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.ModelAttribute;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import org.springframework.web.servlet.ModelAndView;import com.xianbao.model.User;import com.xianbao.service.UserService;@Controller("userHandler")public class UserHandler {    @Autowired    private UserService userService;    @RequestMapping(value="/doLogin",method=RequestMethod.POST)    public String login(HttpServletRequest request,String UNAME,String UPASS){        HttpSession session = request.getSession();        ArrayList<User> list = (ArrayList<User>) userService.findUser(UNAME,UPASS);        session.setAttribute("NAME", list.get(0).getNAME());        if(list.size()!=0){            return "success";        }        else        return "error";    }    @RequestMapping(value="/doRegister",method=RequestMethod.POST)    public String register(HttpServletRequest request,@ModelAttribute("user") User user){    if(userService.saveUser(user)){    return "success";    }else    return "error";    }    @RequestMapping(value="/person",method=RequestMethod.GET)    public ModelAndView personMessage(HttpServletRequest request,ModelAndView model,String UNAME){     List<User> user = userService.queryPerson(UNAME);     System.out.println(user.size());     model.addObject("NAME", user.get(0).getNAME());     model.addObject("TEL", user.get(0).getTEL());     model.addObject("UNAME", user.get(0).getUNAME());     model.addObject("ADDRESS", user.get(0).getADDRESS());     model.addObject("SEX", user.get(0).getSEX());     model.setViewName("person_message");return model;    }}

六、查询时会调用service层方法。finduser方法是登陆，saveuser方法是注册，query是个人信息查询

package com.xianbao.serviceimpl;import java.util.List;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Service;import com.xianbao.dao.UserDao;import com.xianbao.dao.impl.UserDaoImpl;import com.xianbao.model.User;import com.xianbao.service.UserService;@Service("userService")public class UserServiceImpl implements UserService {    @Autowired    private UserDao userDao;    public UserDao getUserDao() {return userDao;}public void setUserDao(UserDao userDao) {this.userDao = userDao;}public List<User> findUser(String UNAME,String UPASS) {return userDao.findUser(UNAME, UPASS);    }public boolean saveUser(User user) {boolean saveUser = userDao.saveUser(user);if(saveUser){return true;}else{return false;}}public List<User> queryPerson(String UNAME) {return userDao.queryUser(UNAME);}}

七、service层会调用dao层方法去对数据库执行操作。

package com.xianbao.dao.impl;import com.xianbao.dao.UserDao;import com.xianbao.model.User;import java.util.List;import javax.annotation.Resource;import org.hibernate.Session;import org.hibernate.SessionFactory;import org.springframework.stereotype.Component;@Component("userDao")public class UserDaoImpl implements UserDao {private SessionFactory sessionFactory;public SessionFactory getSessionFactory() {return sessionFactory;}@Resourcepublic void setSessionFactory(SessionFactory sessionFactory) {this.sessionFactory = sessionFactory;}/* *****************************************登陆验证*************************************************** */@SuppressWarnings("unchecked")public List<User> findUser(String UNAME, String UPASS) {//开启hibernate事物Session s = sessionFactory.openSession();s.beginTransaction();String hql = "FROM User WHERE UNAME = ? AND UPASS = ?";List<User> list= null;        //hibernate封装的方法       list = s.createQuery(hql).setString(0, UNAME).setString(1, UPASS).list();       if(s!=null){if(s.isOpen()){s.close();}}if(list.size()!=0){return list;}else{return null;}}/* *****************************************注册*************************************************** */public boolean saveUser(User user) {Session s = sessionFactory.openSession();try{s.beginTransaction();s.save(user);s.getTransaction().commit();return true;}catch (Exception e) {s.getTransaction().rollback();  return false;}finally{if(s!=null){if(s.isOpen()){s.close();}}}}/* ************************************个人信息************************************************** */@SuppressWarnings("unchecked")public List<User> queryUser(String UNAME){Session s = sessionFactory.openSession();s.beginTransaction();String hql = "FROM User WHERE UNAME = ?";List<User> list= null;list = s.createQuery(hql).setString(0, UNAME).list();if(s!=null){if(s.isOpen()){s.close();}}return list;}}

八、实体类

package com.xianbao.model;import java.io.Serializable;import javax.persistence.Column;import javax.persistence.Entity;import javax.persistence.Id;import javax.persistence.Table;import org.hibernate.annotations.GenericGenerator;@SuppressWarnings("serial")@Entity@Table(name = "tb_user")public class User implements Serializable {@Column(name = "UNAME")private String UNAME; // 用户名@Column(name = "UPASS")private String UPASS; // 密码@Column(name = "NAME")private String NAME;  // 昵称@Column(name = "SEX")private String SEX;   // 性别@Column(name = "ADDRESS")private String ADDRESS;// 地址@Column(name = "TEL")private String TEL;// 电话@Idpublic String getUNAME() {return UNAME;}public void setUNAME(String uNAME) {UNAME = uNAME;}public String getUPASS() {return UPASS;}public void setUPASS(String uPASS) {UPASS = uPASS;}public String getNAME() {return NAME;}public void setNAME(String nAME) {NAME = nAME;}public String getSEX() {return SEX;}public void setSEX(String sEX) {SEX = sEX;}public String getADDRESS() {return ADDRESS;}public void setADDRESS(String aDDRESS) {ADDRESS = aDDRESS;}public String getTEL() {return TEL;}public void setTEL(String tEL) {TEL = tEL;}}

九、总结

类的接口没有写出，查询个人信息是用的a标签跳转到servlet  <a href="person?UNAME=${user.UNAME}" method="post">个人中心</a>

看的是过程而不是照搬，看完视频自学后照着很多文章编了很久都各种错误，最后放下重新看了看web基础，学了servlet，http协议，其实这些框架的原理都是servlet。有很大的帮助。