SSH(Struts、Spring、Hibernate)三大框架整合
1. 新建数据库ssh_db -> 新建表user_tb（id为主键，自动递增)
2. 导入jar包（struts、hibernate 和 spring）
3. 注册页面reg.jsp，将表单的 action 属性设置为 handleAction，input 元素的 name 属性值加上前缀“user.”，如user.username
<%@ 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>账号注册</title> </head> <body> <form action="handleAction" method="post"> 账 号:<input name="user.username"/><br/> <br/> 密 码:<input type="password" name="user.password"/><br/> <br/> <input type="submit" value="注册"/> <input type="submit" value="登录"> </form> </body> </html>
4.数据处理及输出页面handledata.jsp，当Action中返回的user对象为空时，页面输出“注册失败”，不为空时输出注册信息
<%@page import="java.sql.*"%> <%@page import="indi.wt.ssh.pojo.*"%> <%@page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" import="java.sql.*"%> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>数据处理</title> </head> <%@ taglib prefix="s" uri="/struts-tags" %> <body> <% User user = (User) request.getAttribute("user"); if (user != null) { out.print("<p>恭喜你，注册成功！以下是你的注册信息：</>"); out.print("<p>账号：" + user.getUsername() + "</>"); out.print("<p>密码：" + user.getPassword() + "</>"); } else { out.print("<p>注册失败！</>"); } %> </body> </html>
5.实体层:根据数据库表结构生成 User 类，并生成对应字段的 set 和 get 方法（id为主键，生成策略为自动增长，username和password为属性）-> 加hibernate注解如下
package indi.wt.ssh.pojo; import javax.persistence.*; import org.hibernate.annotations.Where; @Entity @Table(name="user_tb") @Where(clause = "") public class User { @Column(name="username") private String username; @Column(name="password") private String password; @Id @GeneratedValue(strategy = GenerationType.IDENTITY) //主键生成策略 private int 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; } public int getId() { return id; } public void setId(int id) { this.id = id; } }
6. 数据访问层，加入insertUser和getUser方法
package indi.wt.ssh.dao; import indi.wt.ssh.pojo.User; import org.hibernate.*; import org.hibernate.cfg.*; public class UserDao { public int insertUser(User user) { //System.out.println("insertUser"); Configuration config = new Configuration().configure(); SessionFactory sf = config.buildSessionFactory(); Session session = sf.openSession(); Transaction tx = session.beginTransaction(); session.save(user); tx.commit(); session.close(); sf.close(); return user.getId(); } public User getUser(int id) { User user = null; Configuration config = new Configuration().configure(); SessionFactory sf = config.buildSessionFactory(); Session session = sf.openSession(); Transaction tx = session.beginTransaction(); Object obj = session.createQuery("from User u where u.id=" + id).uniqueResult(); tx.commit(); user = (User) obj; session.close(); sf.close(); return user; } }
7. Action层：注入User和UserDao对象 -> 生成相应地get和set方法 -> 重写execute方法
package indi.wt.ssh.action; import org.apache.struts2.ServletActionContext; import com.opensymphony.xwork2.ActionSupport; import indi.wt.ssh.dao.UserDao; import indi.wt.ssh.pojo.User; public class HandleDataAction extends ActionSupport { User user = null; UserDao userDao = null; public UserDao getUserDao() { return userDao; } public void setUserDao(UserDao userDao) { this.userDao = userDao; } public User getUser() { return user; } public void setUser(User user) { this.user = user; } public String execute() { if(userDao == null) System.out.println("userdao = null"); int id = userDao.insertUser(user); System.out.println("id = "+id); if (id > 0) { ServletActionContext.getRequest().setAttribute("user",user); return SUCCESS; } else { return "error"; } } }
8. 配置web.xml，加入Spring监听器和Struts过滤器
<?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>SSHIntegrationPrj</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> <filter> <filter-name>Struts2</filter-name> <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class> </filter> <filter-mapping> <filter-name>Struts2</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> </web-app>
9. 配置struts文件struts.xml，放在src目录下
<?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> <constant name="struts.enable.DynamicMethodInvocation" value="false" /> <constant name="struts.devMode" value="true" /> <package name="default" namespace="/" extends="struts-default"> <default-action-ref name="index" /> <global-results> <result name="error">/WEB-INF/jsp/error.jsp</result> </global-results> <global-exception-mappings> <exception-mapping exception="java.lang.Exception" result="error"/> </global-exception-mappings> <action name="RegAction" > <result>/reg.jsp</result> </action> <action name="handleAction" class="indi.wt.ssh.action.HandleDataAction"> <result name="success">/handledata.jsp</result> </action> </package> </struts>
10. 配置hibernate文件hibernate.cfg.xml，放在src目录下
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd"> <hibernate-configuration> <session-factory> <!-- 数据库JDBC驱动类名 --> <property name="connection.driver_class">com.mysql.jdbc.Driver</property> <property name="connection.url">jdbc:mysql://127.0.0.1:3306/ssh_db</property> <property name="connection.username">wt</property> <property name="connection.password">123456</property> <!-- 数据库方言 --> <property name="dialect">org.hibernate.dialect.MySQL5Dialect</property> <!-- ddl语句自动建表 --> <property name="hbm2ddl.auto">none</property> <!--输出sql语句 --> <property name="show_sql">true</property> <property name="format_sql">true</property> <!-- 连接池配置 --> <property name="hibernate.connection.provider_class">org.hibernate.connection.C3P0ConnectionProvider</property> <property name="hibernate.c3p0.max_size">20</property> <property name="hibernate.c3p0.min_size">5</property> <property name="hibernate.c3p0.timeout">120</property> <property name="automaticTestTable">Test</property> <property name="hibernate.c3p0.max_statements">100</property> <property name="hibernate.c3p0.idle_test_period">120</property> <property name="hibernate.c3p0.acquire_increment">1</property> <property name="c3p0.testConnectionOnCheckout">true</property> <property name="c3p0.idleConnectionTestPeriod">18000</property> <property name="c3p0.maxIdleTime">25000</property> <property name="c3p0.idle_test_period">120</property> <!-- 注册ORM映射文件 --> <mapping class="indi.wt.ssh.pojo.User"/> </session-factory> </hibernate-configuration>
11. 配置spring文件applicationContext.xml，放在web-inf目录下 （因UserDao和HandleDataAction之间存在依赖关系，故将到 dao 对象的配置放在前面。特别要注意的是，系统默认采用的自动装配策略是 byName 方式，所以此处 dao 的 id 值必须和 action 中的属性名一致，action 的 id 值要和 Struts.xml 文件中配置的 action 名一致）
<?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:util="http://www.springframework.org/schema/util" xmlns:p="http://www.springframework.org/schema/p" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd"> <!-- 配置一个 bean --> <bean id="userDao" class="indi.wt.ssh.dao.UserDao"></bean> <bean id="handleAction" class="indi.wt.ssh.action.HandleDataAction"></bean> </beans>
