SSH整合开发实例：用户管理系统

时间：2022-08-13 14:21:14

本文使用的是Struts2+Hibernate3+Spring3框架整合开发的用户管理系统实例。

1.1数据库层实现

建数据库，名为surra；

建数据表，名为user。其中id设置为自增。

SSH整合开发实例：用户管理系统

1.2Hibernate持久层设计

1.2.1 创建持久化类：User.java

package com.integration.entity;

public class User {
	private int id;
	private String name;
	private String password;
	private String type;

	public User() {
	}

	public User(int id, String name, String password, String type) {
		this.id = id;
		this.name = name;
		this.password = password;
		this.type = type;
	}

	public int getId() {
		return this.id;
	}

	public void setId(int id) {
		this.id = id;
	}

	public String getName() {
		return this.name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String getPassword() {
		return this.password;
	}

	public void setPassword(String password) {
		this.password = password;
	}

	public String getType() {
		return this.type;
	}

	public void setType(String type) {
		this.type = type;
	}
}
1.2.2 创建映射文件：User.hbm.xml 

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
    <class name="com.integration.entity.User" table="USER">
        <id name="id" type="java.lang.Integer">
            <column name="ID" precision="22" scale="0" />
            <generator class="identity" />
        </id>
        <property name="name" type="java.lang.String">
            <column name="NAME" length="100" not-null="false">
                <comment>用户名</comment>
            </column>
        </property>
        <property name="password" type="java.lang.String">
            <column name="PASSWORD" length="100" not-null="false">
                <comment>密码</comment>
            </column>
        </property>
        <property name="type" type="java.lang.String">
            <column name="TYPE" length="500" not-null="false">
                <comment>类型</comment>
            </column>
        </property>
    </class>
</hibernate-mapping>

1.3 DAO层实现

1.3.1Spring管理SessionFactory：applicationContext.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:p="http://www.springframework.org/schema/p"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
    <!-- 配置SessionFactory -->
 	<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
		<property name="dataSource" >
			<ref local="dataSource"/>
		</property>
		<!-- 配置Hibernate的属性 -->
		<property name="hibernateProperties">
			<props>
				<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
				<prop key="hibernate.show_sql">true</prop>
			</props>
		</property>
		<!-- 指定HIbernate映射文件的路径 -->
		<property name="mappingResources">
			<list>
				<value>com/integration/entity/User.hbm.xml</value>
			</list>
		</property>
 	</bean>
	 <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
		<property name="driverClassName">
			<value>com.mysql.jdbc.Driver</value>
		</property>
		<property name="url">
			<value>jdbc:mysql://localhost:3306/surra
			</value>
		</property>
		<property name="username">
			<value>admin</value>
		</property>
		<property name="password">
			<value>123456</value>
		</property>
	</bean>	
</beans>
1.3.2 创建DAO接口：UserDAO.java 

package com.integration.dao;
import java.util.List;
import com.integration.entity.User;
public interface UserDAO {
	 void save(User user);
	 User getUser(String name);
	 void delete(int id);
	 void update(User user);
	 User findById(int id);
	 List<User> findAll();
}

1.3.3 创建DAO接口实现类：UserDAOImpl.java 

package com.integration.dao;
import java.util.List;
import com.integration.entity.User;
import org.hibernate.Query;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;
public class UserDAOImpl extends HibernateDaoSupport implements UserDAO{
	public void save(User user) {
		this.getHibernateTemplate().save(user);		
	}
	public User getUser(String name)
	{
		String hsql="from User u where u.name='"+name+"'";
		User result=(User)((Query) this.getHibernateTemplate().find(hsql)).uniqueResult();
		return result;
	}	
	public void delete(int id) {
			this.getHibernateTemplate().delete(findById(id));
	}	
	public void update(User user){
			this.getHibernateTemplate().update(user);
	}
	public User findById(int id) {
			User user = (User) this.getHibernateTemplate().get(User.class, id);
			return user;
	}	
	@SuppressWarnings("unchecked")
	public List<User> findAll() {
			String queryString = "from User";
			List<User> list =this.getHibernateTemplate().find(queryString);
			return list;
	}
}

在applicationContext.java中添加如下内容：

<span style="white-space:pre">	</span><bean id="userDAO"
	 	class="com.integration.dao.UserDAOImpl"
	 	abstract="false" lazy-init="default" autowire="default">
	 	<property name="sessionFactory">
	 		<ref bean="sessionFactory" />
	 	</property>
	 </bean>



1.4 业务逻辑层实现

1.4.1 创建业务逻辑组件接口：UserService.java

package com.integration.service;
import java.util.List;
import com.integration.entity.User;
public interface UserService {
	void saveUser(User user);
	User getUser(String name);
	void deleteUser(int id);
	void updateUser(User user);
	User findUserById(int id);
	List<User> findAll();
}

1.4.2 创建业务逻辑组件实现类：UserServiceImpl.java 

package com.integration.service;
import java.util.List;
import com.integration.dao.UserDAO;
import com.integration.entity.User;
public class UserServiceImpl implements UserService {
	private UserDAO userDAO;
	public void setUserDAO(UserDAO userDAO){
		this.userDAO=userDAO;
	}
	public void saveUser(User user) {
		if(userDAO.findById(user.getId())==null)
			userDAO.save(user);
	}
	public User getUser(String name) {
		return userDAO.getUser(name);
	}
	public void deleteUser(int id) {
		if(userDAO.findById(id)!=null)
			userDAO.delete(id);	
	}
	public void updateUser(User user) {
		if(userDAO.findById(user.getId())!=null)
			userDAO.update(user);
	}
	public User findUserById(int id) {
		return userDAO.findById(id);
	}
	public List<User> findAll() {
		return userDAO.findAll();
	}	
}

在applicationContext.java中进行配置，如下所示： 

<span style="white-space:pre">	</span><bean id="userService" class="com.integration.service.UserServiceImpl">
	 	<property name="userDAO" ref="userDAO"></property>
	</bean>

1.5 完成用户登录设计

1.5.1 整合Struts2+Spring：先添加相应的jar包，然后修改web.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 
	xmlns="http://java.sun.com/xml/ns/javaee" 
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
	http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

  <welcome-file-list>
    <welcome-file>login.jsp</welcome-file>
  </welcome-file-list>

  <filter>
  <filter-name>struts2</filter-name>
  <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</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>

 <context-param>
    <param-name>contextConfigLocation </param-name>
    <param-value>/WEB-INF/classes/applicationContext.xml </param-value>
</context-param>

</web-app>

1.5.2 创建用户登录Action：LoginAction.java 

package com.integration.action;
import java.util.Iterator;
import java.util.List;
import com.integration.service.UserService;
import com.integration.entity.User;
import com.opensymphony.xwork2.ActionSupport;
@SuppressWarnings("serial")
public class LoginAction extends ActionSupport {
	String username;
	String password;
	String usertype;
	public String getUsertype() {
		return usertype;
	}
	public void setUsertype(String usertype) {
		this.usertype = usertype;
	}
	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;
	}
	private UserService userService;
	public void setUserService(UserService userService) {
		this.userService = userService;
	}
	public String execute(){
		List<User> list = (List<User>) userService.findAll();
		User u = new User();
		Iterator<User> it=list.iterator(); 
		while(it.hasNext()){
			 u = (User)it.next();
			 if(username.trim().equals(u.getName())&&password.trim().equals(u.getPassword())&&usertype.trim().equals(u.getType()))
				  return "success";
			 else return "failer";
		}
		 String page = "failer";
		   return page;
}
}

1.5.3 用户登录页面：Login.jsp 

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%@ taglib prefix="s" uri="/struts-tags"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
	<head>
		<title>用户登录</title>
	</head>
	<body>
		<s:form action="login" method="post">
		<s:textfield name="username" label="用户名"></s:textfield>
		<s:password name="password" label="密码"></s:password>
		<s:textfield name="usertype" label="类型"></s:textfield>
		<s:submit value="提交"></s:submit>
		</s:form>
	</body>
</html>

1.5.4 配置控制器：applicationContext.xml中添加如下内容： 

<span style="white-space:pre">	</span><bean id="loginAction" class="com.integration.action.LoginAction">
	 	<property name="userService" ref="userService"></property>
	 </bean>

1.5.5 在struts.xml文件中配置loginAction，并定义处理结果与视图资源的关系：struts.xml 

<span style="white-space:pre">	</span><?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
<constant name="struts.objectFactory" value="spring" />
<constant name="struts.enable.DynamicMethodInvocation" value="true" />
    <constant name="struts.devMode" value="true" />
    <constant name="struts.i18n.reload" value="true" />
    <constant name="struts.configuration.xml.reload" value="true" />
    <constant name="struts.custom.i18n.resources" value="globalMessages" />
<span style="white-space:pre">	</span><constant name="struts.url.includeParams" value="none" />
<span style="white-space:pre">	</span><constant name="struts.ui.theme" value="xhtml"></constant>
<span style="white-space:pre">	</span><package name="struts2" extends="struts-default">
<span style="white-space:pre">		</span><action name="login" class="loginAction">
<span style="white-space:pre">			</span><result name="success">/success.jsp</result>
<span style="white-space:pre">			</span><result name="failer">/error.jsp</result>
<span style="white-space:pre">		</span></action>
<span style="white-space:pre">	</span></package>
</struts>    

以上的代码可以测试用户登录，由于时间限制，剩余的查询用户、添加用户、删除用户、更新用户信息的代码同理可得。


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