springMVC,spring和Hibernate整合
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第一步:搭建一个springmvc工程,需要的jar有:
第二步:配置工程的web.xml文件.
<?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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"id="WebApp_ID" version="2.5"><display-name>springmvc</display-name><welcome-file-list> <welcome-file>Login.jsp</welcome-file> <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><!-- 加载所有的配置文件 --><context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath*:config/spring-*.xml</param-value></context-param><!-- 配置Spring监听 --><listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class></listener><!-- 配置字符集 --><filter> <filter-name>encodingFilter</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>encodingFilter</filter-name> <url-pattern>/*</url-pattern></filter-mapping><!-- 配置Session --><filter> <filter-name>openSession</filter-name> <filter-class>org.springframework.orm.hibernate4.support.OpenSessionInViewFilter</filter-class> <!-- 请注意,此处必须定义,否则后面会报错,具体是什么,笔者没截图,记不太清楚了 --> <init-param> <param-name>sessionFactoryBeanName</param-name> <param-value>sessionFactory</param-value> </init-param></filter><filter-mapping> <filter-name>openSession</filter-name> <url-pattern>/*</url-pattern></filter-mapping><!-- 配置SpringMVC --><servlet> <servlet-name>springMVC</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath*:config/spring-mvc.xml</param-value> </init-param> <load-on-startup>1</load-on-startup></servlet><servlet-mapping> <servlet-name>springMVC</servlet-name> <url-pattern>/</url-pattern></servlet-mapping><!-- 引用js,如果无此配置,则无法对js进行加载 --><servlet-mapping> <servlet-name>default</servlet-name> <url-pattern>*.js</url-pattern></servlet-mapping>
tomcat对里面的加载顺序:Context-Param—->Listener—->filter—->servlet
第三步:配置hibernate,spring,springmvc等文件,将这些文件全部放到src/config目录下。
Hibernate的配置文件,spring-common.xml如下:
<?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:mvc="http://www.springframework.org/schema/mvc"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"><!-- 配置数据源 --><bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <property name="driverClassName" value="com.mysql.jdbc.Driver"></property> <property name="url" value="jdbc:mysql://localhost/springmvc"></property> <property name="username" value="root"></property> <property name="password" value="root"></property></bean><!-- 配置SessionFactory --><bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <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> <!-- 注解扫描的包 --> <property name="annotatedClasses"> <list> <value>ne.springmvc.entity.User</value> </list> </property></bean><!-- 配置一个事务管理器 --><bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory" /></bean><!-- 配置事务,使用代理的方式 --><bean id="transactionProxy" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean" abstract="true"> <property name="transactionManager" ref="transactionManager"></property> <property name="transactionAttributes"> <props> <prop key="add*">PROPAGATION_REQUIRED,-Exception</prop> <prop key="modify*">PROPAGATION_REQUIRED,-myException</prop> <prop key="del*">PROPAGATION_REQUIRED</prop> <prop key="*">PROPAGATION_REQUIRED</prop> </props> </property></bean>
springmvc的配置文件spring-mvc.xml如下
<?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:p="http://www.springframework.org/schema/p"xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd"><!-- 注解扫描包 --><context:component-scan base-package="ne.springmvc.*" /><!-- 开启注解 --><mvc:annotation-driven /><!-- 静态资源(js/image)的访问 --><!-- <mvc:resources location="/js/" mapping="/js/**"/> --><!-- 定义视图解析器 --><bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/jsp"></property> <property name="suffix" value=".jsp"></property></bean>
spring的配置文件spring-beans.xml如下:
<?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:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd"> <bean id="userDao" class="ne.springmvc.dao.UserDaoImpl"> <property name="sessionFactory" ref="sessionFactory"></property> </bean> <bean id="userManagerBase" class="ne.springmvc.service.UserManagerImpl"> <property name="userDao" ref="userDao"></property> </bean> <!-- 此处为代理 --> <bean name="userManager" parent="transactionProxy"> <property name="target" ref="userManagerBase"></property> </bean>
工程的四个配置文件全部完成,接下来按照mvc的设计模式,从dao层代码开始,先编写实体entity。注:在此之前,需要在mysql数据库中新建好数据库和表。实体User.java如下:
package ne.springmvc.entity;import javax.persistence.Column;import javax.persistence.Entity;import javax.persistence.GeneratedValue;import javax.persistence.Id;import javax.persistence.Table;import org.hibernate.annotations.GenericGenerator;/** * 此实体的定义应用了springmvc的注解,省去了传统的Hibernate跟数据库之间的映射配置文件 * @author will * */@Entity @Table(name="T_USER") public class User { @Id @GeneratedValue(generator="system-uuid") @GenericGenerator(name = "system-uuid",strategy="uuid") @Column(length=32) private String id; @Column(length=32) private String userName; @Column(length=32) private String age; 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 getAge() { return age; } public void setAge(String age) { this.age = age; }
}
dao层:接口userDao.java如下:
package ne.springmvc.dao;import java.util.List;import ne.springmvc.entity.User;public interface UserDao {public User getUser(String id); public List<User> getAllUser(); public void addUser(User user); public boolean delUser(String id); public boolean updateUser(User user);
}
接口userDao.java的实现类UserDaoImpl.java如下:
package ne.springmvc.dao;import java.util.List;import org.hibernate.Query;import org.hibernate.SessionFactory;import ne.springmvc.entity.User;public class UserDaoImpl implements UserDao {private SessionFactory sessionFactory; public void setSessionFactory(SessionFactory sessionFactory) { this.sessionFactory = sessionFactory; } /** * 根据用户id查询用户 */public User getUser(String id) { String hql = "from User u where u.id=?"; Query query = sessionFactory.getCurrentSession().createQuery(hql); query.setString(0, id); return (User)query.uniqueResult(); } /** * 查询所有用户 */public List<User> getAllUser() { String hql = "from User"; Query query = sessionFactory.getCurrentSession().createQuery(hql); return query.list(); } /** * 添加用户 */public void addUser(User user) { sessionFactory.getCurrentSession().save(user); } /** * 根据用户id删除用户 */public boolean delUser(String id) { String hql = "delete User u where u.id = ?"; Query query = sessionFactory.getCurrentSession().createQuery(hql); query.setString(0, id); return (query.executeUpdate() > 0); } /** * 编辑用户 */public boolean updateUser(User user) { String hql = "update User u set u.userName = ?,u.age=? where u.id = ?"; Query query = sessionFactory.getCurrentSession().createQuery(hql); query.setString(0, user.getUserName()); query.setString(1, user.getAge()); query.setString(2, user.getId()); return (query.executeUpdate() > 0); } }
service层的接口UserManager.java如下:
package ne.springmvc.service;import java.util.List;import ne.springmvc.entity.User;public interface UserManager { public User getUser(String id); public List<User> getAllUser(); public void addUser(User user); public boolean delUser(String id); public boolean updateUser(User user); }
接口userManager的实现类UserManagerImpl.java如下:
package ne.springmvc.service;import java.util.List;import ne.springmvc.dao.UserDao;import ne.springmvc.entity.User;public class UserManagerImpl implements UserManager {private UserDao userDao; public void setUserDao(UserDao userDao) { this.userDao = userDao; } public User getUser(String id) { return userDao.getUser(id); } public List<User> getAllUser() { return userDao.getAllUser(); } public void addUser(User user) { userDao.addUser(user); } public boolean delUser(String id) { return userDao.delUser(id); } public boolean updateUser(User user) { return userDao.updateUser(user); } }
控制层UserController.java如下:
package ne.springmvc.controller;import java.io.IOException;import java.io.PrintWriter;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import ne.springmvc.entity.User;import ne.springmvc.service.UserManager;import javax.annotation.Resource;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;@Controller @RequestMapping("/user") public class UserController { @Resource(name="userManager") private UserManager userManager; @RequestMapping("/getAllUser") public String getAllUser(HttpServletRequest request){ request.setAttribute("userList", userManager.getAllUser()); return "/Index"; } @RequestMapping("/getUser") public String getUser(String id,HttpServletRequest request){ request.setAttribute("user", userManager.getUser(id)); return "/editUser"; } @RequestMapping("/toAddUser") public String toAddUser(){ return "/addUser"; } @RequestMapping("/addUser") public String addUser(User user,HttpServletRequest request){ System.out.println("用户名:======"+user.getUserName()); userManager.addUser(user); return "redirect:/user/getAllUser"; } @RequestMapping("/delUser") public void delUser(String id,HttpServletResponse response){ String result = "{\"result\":\"error\"}"; if(userManager.delUser(id)){ result = "{\"result\":\"success\"}"; } response.setContentType("application/json"); try { PrintWriter out = response.getWriter(); out.write(result); } catch (IOException e) { e.printStackTrace(); } } @RequestMapping("/updateUser") public String updateUser(User user,HttpServletRequest request){ if(userManager.updateUser(user)){ user = userManager.getUser(user.getId()); request.setAttribute("user", user); return "redirect:/user/getAllUser"; }else{ return "/error"; } } }
jsp页面:Login.jsp,Index.jsp,addUser.jsp,editUser.jsp总共四个页面,成功和错误页面就没写了。
Login.jsp页面如下:
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>首页</title> </head> <body> <h5><a href="/springmvc-hibernate-test/user/getAllUser">进入用户管理页</a></h5></body> </html>
Index.jsp页面如下:
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head><% String path = request.getContextPath();%><script type="text/javascript" src="<%=path%>/js/jquery-1.9.1.min.js"></script> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> <script type="text/javascript"> function del(id){ $.get("/springmvc-hibernate-test/user/delUser?id=" + id,function(data){ if("success" == data.result){ alert("删除成功"); window.location.reload(); }else{ alert("删除失败"); } }); } </script> </head> <body> <h6><a href="/springmvc-hibernate-test/user/toAddUser">添加用户</a></h6> <table border="1"> <tbody> <tr> <th>姓名</th> <th>年龄</th> <th>操作</th> </tr> <c:if test="${!empty userList }"> <c:forEach items="${userList }" var="user"> <tr> <td>${user.userName }</td> <td>${user.age }</td> <td> <a href="/springmvc-hibernate-test/user/getUser?id=${user.id }">编辑</a> <a href="javascript:del('${user.id }')">删除</a> </td> </tr> </c:forEach> </c:if> </tbody> </table> </body> </html>
addUser.jsp页面如下:
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%><%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> <script type="text/javascript"> function addUser(){ var form = document.forms[0]; form.action = "/springmvc-hibernate-test/user/addUser"; form.method="post"; form.submit(); } </script> </head> <body> <h1>添加用户</h1> <form action="" name="userForm"> 姓名:<input type="text" name="userName"> 年龄:<input type="text" name="age"> <input type="button" value="添加" onclick="addUser()"> </form> </body> </html>
editUser.jsp页面如下:
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%><%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head><%String path = request.getContextPath();%> <script type="text/javascript" src="<%=path %>/js/jquery-1.9.1.min.js"></script> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Insert title here</title> </head> <body> <h1>编辑用户</h1> <form action="/springmvc-hibernate-test/user/updateUser" name="userForm" method="post"> <input type="hidden" name="id" value="${user.id }"> 姓名:<input type="text" name="userName" value="${user.userName }"> 年龄:<input type="text" name="age" value="${user.age }"> <input type="submit" value="编辑" > </form> </body> </html>
以上便是所有的代码,下面是页面效果。
首页:
管理页面:
添加页面:
编辑页面:
遇到的问题:
1、jquery.1.9.1.min.js加载不进来,原因是springmvc将js统一认定为静态资源,所以需要额外配置去引用js,我是在web.xml里面配置的,配置如下:
<servlet-mapping> <servlet-name>default</servlet-name> <url-pattern>*.js</url-pattern></servlet-mapping>
2、添加用户时,mysql数据库出现中文乱码问题,在eclipse,tomcat,数据库和表都设置为utf-8之后,还需要将mysql安装目录下的my.ini文件中,将default-character-set=utf8和character-set-server=utf8,如下图:
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