Struts2+Spring+hibernate 小demo

我就是我 2022-08-10 09:45 147阅读 0赞

搭个架子，说实话，没啥大用，拷贝点jar包，改改配置文件，建立几个类，就完事了，能学到啥呢？

设计模式，算法，多线程，经验，层次要高点，闲话不多说了，开配：

1 准备jar包，还挺多的，下一篇直接贴源码。

![Image 1][]

2  三个重要配置文件 web.xml applicationContext.xml struts.xml

<?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">  
      
    <context-param>  
        <param-name>contextConfigLocation</param-name>  
        <param-value>/WEB-INF/applicationContext\*.xml</param-value>  
    </context-param>  
      
    <listener>  
        <listener-class>  
            org.springframework.web.context.ContextLoaderListener  
        </listener-class>  
    </listener>  
      
      
      
    <filter>  
        <filter-name>lazyLoadingFilter</filter-name>  
        <filter-class>  
            org.springframework.orm.hibernate3.support.OpenSessionInViewFilter  
        </filter-class>  
    </filter>  
  
  
      
    <filter>  
        <filter-name>struts2</filter-name>  
        <filter-class>  
            org.apache.struts2.dispatcher.FilterDispatcher  
        </filter-class>  
    </filter>  
    <filter-mapping>  
    <filter-name>lazyLoadingFilter</filter-name>  
    <url-pattern>\*.action</url-pattern>  
    </filter-mapping>  
      
    <filter-mapping>  
        <filter-name>struts2</filter-name>  
        <url-pattern>/\*</url-pattern>  
    </filter-mapping>  
  
  
    <welcome-file-list>  
    <welcome-file>index.jsp</welcome-file>  
    </welcome-file-list>  
  
  
</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: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-2.5.xsd  
    http://www.springframework.org/schema/tx  
    http://www.springframework.org/schema/tx/spring-tx-2.0.xsd  
    http://www.springframework.org/schema/aop  
    http://www.springframework.org/schema/aop/spring-aop-2.0.xsd">  
  
  
  
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">  
<property name="driverClassName" value="com.mysql.jdbc.Driver">  
</property>  
<property name="url" value="jdbc:mysql://localhost:3306/myfktest">  
</property>  
<property name="username" value="root"></property>  
<property name="password" value=""></property>  
</bean>  
  
  
<bean id="sessionFactory"  
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">  
<property name="dataSource">  
<ref bean="dataSource" />  
</property>  
<property name="hibernateProperties">  
<props>  
<prop key="hibernate.dialect">  
org.hibernate.dialect.MySQLDialect  
</prop>  
<prop key="hibernate.show\_sql">true</prop>  
</props>  
</property>  
<property name="mappingResources">  
<list>  
<value>com/fk/model/Person.hbm.xml</value>  
</list>  
</property>  
</bean>  
  
  
<bean id="personDao" class="com.fk.dao.impl.PersonDaoImpl">  
<property name="sessionFactory">  
<ref bean="sessionFactory" />  
</property>  
</bean>  
  
  
<bean id="service" class="com.fk.sevice.impl.ServiceImpl">  
<property name="personDao">  
<ref bean="personDao" />  
</property>  
</bean>  
  
  
  
  
<bean id="listPerson" class="com.fk.action.PersonAction" scope="prototype">  
<property name="service">  
<ref bean="service" />  
</property>  
</bean>  
  
  
  
<bean id="transactionManager"  
class="org.springframework.orm.hibernate3.HibernateTransactionManager">  
<property name="sessionFactory">  
<ref local="sessionFactory" />  
</property>  
</bean>  
  
  
  
<tx:advice id="txAdvice" transaction-manager="transactionManager">  
<tx:attributes>  
<tx:method name="add\*" propagation="REQUIRED" />  
<tx:method name="delete\*" propagation="REQUIRED" />  
<tx:method name="update\*" propagation="REQUIRED" />  
<tx:method name="\*" read-only="true" />  
</tx:attributes>  
</tx:advice>  
  
  
  
<aop:config>  
<aop:pointcut id="allManagerMethod"  
expression="execution(\*  
    com.fk.service.\*.\*(..))" />  
<aop:advisor advice-ref="txAdvice" pointcut-ref="allManagerMethod" />  
</aop:config>  
  
  
</beans>

<?xml version="1.0" encoding="UTF-8"?>  
<!DOCTYPE struts PUBLIC   
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"   
    "http://struts.apache.org/dtds/struts-2.0.dtd">  
<struts>  
  
<constant name="struts.objectFactory" value="spring" />  
<package name="fk" extends="struts-default">  
<action name="listPerson" class="listPerson">  
<result name="success" type="dispatcher">/list.jsp</result>  
</action>  
</package>  
</struts>

3 jsp页面

<%@ page language="java" pageEncoding="utf-8"%>  
<%@ taglib uri="/struts-tags" prefix="s"%>  
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">  
<html>  
<head>  
<title>list employee page</title>  
<meta http-equiv="pragma" content="no-cache">  
<meta http-equiv="cache-control" content="no-cache">  
<meta http-equiv="expires" content="0">  
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">  
<meta http-equiv="description" content="This is my page">  
<style type="text/css">  
table \{  
border: 1px solid black;  
border-collapse: collapse;  
\}  
  
  
table thead tr th \{  
border: 1px solid black;  
padding: 3px;  
background-color: \#cccccc;  
\}  
  
  
table tbody tr td \{  
border: 1px solid black;  
padding: 3px;  
\}  
</style>  
</head>  
<body>  
<center>  
<h3>雇员管理：</h3>  
<br>  
<h4>  
<a href="../emp/add.jsp">员工注册</a>  
</h4>  
<s:form action="listPerson" theme="simple">  
<table>  
<thead>  
<tr>  
<th>选择</th>  
<th>编号</th>  
<th>姓名</th>  
<th>电话</th>  
<th>地址</th>  
<th>操作</th>  
</tr>  
</thead>  
<tbody>  
<s:iterator value="personList">  
<tr>  
<td><input type="checkbox" name="id"  
value='<s:property value="id" />' /></td>  
<td><s:property value="id" /></td>  
<td><s:property value="name" /></td>  
<td><s:property value="phone" /></td>  
<td><s:property value="address" /></td>  
<td><a  
href='<s:url action="edit"><s:param name="id" value="id" /></s:url>'>  
修改 </a> &nbsp; <a  
href='<s:url action="delete"><s:param name="id" value="id" /></s:url>'>  
删除 </a></td>  
</tr>  
</s:iterator>  
</tbody>  
</table>  
<s:submit value="delete" />  
</s:form>  
</center>  
</body>  
  
  
</html>

哥要实现的是，http://127.0.0.1:8080/testssh/listPerson，访问这个action后，跳转到指定list.jsp页面，并刷出数据来。

流程讲下：

action要继承actionSupport，要重写execute方法，当请求action是listperson时，会执行execute方法，该方法中调用service-dao，然后返回list

所以actioin中要定义一个list成员变量，提供get set方法·，这样执行完execute后，会把list结果返回，不用存在resquest中了，只需要返回一个标志位即可

action代码：

package com.fk.action;  
  
  
import java.util.ArrayList;  
import java.util.List;  
  
  
import com.fk.model.Person;  
import com.fk.sevice.Service;  
import com.opensymphony.xwork2.ActionSupport;  
  
  
public class PersonAction extends ActionSupport \{  
  
  
private static final long serialVersionUID = -6165045820084536332L;  
  
  
private List<Person> personList = new ArrayList<Person>();  
  
  
private Service service;  
  
  
public Service getService() \{  
return service;  
\}  
  
  
public void setService(Service service) \{  
this.service = service;  
\}  
  
  
public List<Person> getPersonList() \{  
return personList;  
\}  
  
  
public void setPersonList(List<Person> personList) \{  
this.personList = personList;  
\}  
  
  
@Override  
public String execute() throws Exception \{  
personList = service.getPerSonList();  
return SUCCESS;  
\}  
  
  
\}

其实这块属于潜规则，别的很eazy，说白了就是action-service-dao，dao用使用templdate这个家伙，访问数据库，crud就行了。接着贴。

package com.fk.dao.impl;  
  
  
import java.util.List;  
  
  
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;  
  
  
import com.fk.dao.PersonDao;  
import com.fk.model.Person;  
  
  
public class PersonDaoImpl extends HibernateDaoSupport implements PersonDao \{  
  
  
@SuppressWarnings("unchecked")  
public List<Person> getPersonList() \{  
return (List<Person>) getHibernateTemplate().find("from Person");  
\}  
  
  
\}

数据库提前要建立好数据库，跟表，注意我们用的是hibernate，要用映射文件。贴：

<?xml version="1.0"?>   
<!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.fk.model.Person" table="t\_person">  
<id name="id" column="id" type="int">  
<generator class="increment" />  
</id>  
<property name="name" column="name" type="string" />  
<property name="phone" column="phone" type="string" />  
<property name="address" column="address" type="string" />  
</class>  
</hibernate-mapping>

明白了不，很简单的，不过要动手搞一下，光明白不行。

[Image 1]: