2014-03-20 Spring的学习(5)------ORM工具进行数据访问+集成Web框架
1.开发环境配置
1.1 Java运行环境:JDK1.6
1.2 J2EE:JAVAEE_5 Libraries
1.3 Web APP Libraries
a.Hibernate:requriedJar目录下所有架包
antlr-2.7.6.jar
asm-attrs.jar
asm.jar
cglib-2.1.3.jar
commons-collections-2.1.1.jar
commons-logging-1.0.4.jar
dom4j-1.6.1.jar
ehcache-1.2.3.jar
hibernate3.jar
jta.jar
b.Spring:
aspectjrt.jar
aspectjweaver.jar
cglib-nodep-2.1_3.jar
common-annotations.jar
commons-dbcp.jar
commons-pool.jar
spring-webmvc-struts.jar
spring.jar
c:Strut1.3:lib目录下将 JSTL和 Stander版本为1.1,其他导入
d:MySQL数据库连接驱动架包
开发环境目录如图:
2.Spring和Hibernate的整合
User.java
package cn.itcast.domain;
public class User {
private Integer id;
private String name;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
}
User.hbm.xml
<?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 package="cn.itcast.domain"> <class name="User" table="tb_user2" lazy="true"> <id name="id"> <generator class="native"/> </id> <property name="name" column="name" not-null="true" length="255"></property> </class> </hibernate-mapping>
beans.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:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
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/aop
http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
<context:component-scan base-package="cn.itcast.dao"/>
<context:property-placeholder location="classpath:jdbc.properties"/>
<bean id="dataSource" destroy-method="close"
class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="${jdbc.driverClassName}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
<property name="initialSize" value="${jdbc.initialSize}" />
<property name="maxActive" value="${jdbc.maxActive}" />
<property name="maxIdle" value="${jdbc.maxIdle}" />
<property name="minIdle" value="${jdbc.minIdle}" />
</bean>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="mappingResources">
<list>
<value>cn/itcast/domain/User.hbm.xml</value>
</list>
</property>
<property name="hibernateProperties">
<value>
hibernate.dialect=org.hibernate.dialect.MySQLDialect
hibernate.show_sql=true
hibernate.format_sql=true
hibernate.hbm2ddl.auto=update
</value>
</property>
</bean>
<bean id="txManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<context:annotation-config></context:annotation-config>
<tx:annotation-driven transaction-manager="txManager"/>
</beans>
UserDaoImpl.java
package cn.itcast.dao.impl;
import java.util.List;
import javax.annotation.Resource;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;
import cn.itcast.dao.UserDao;
import cn.itcast.domain.User;
@Transactional @Repository
public class UserDaoImpl implements UserDao {
@Resource
private SessionFactory sessionFactory;
/* (non-Javadoc)
* @see cn.itcast.dao.impl.UserDao#add(cn.itcast.domain.User)
*/
@Override
public void add(User user){
Session session = sessionFactory.getCurrentSession();
session.persist(user);
}
/* (non-Javadoc)
* @see cn.itcast.dao.impl.UserDao#findById(java.lang.Integer)
*/
@Override
public User findById(Integer id){
return (User) sessionFactory.getCurrentSession().get(User.class, id);
}
/* (non-Javadoc)
* @see cn.itcast.dao.impl.UserDao#update(cn.itcast.domain.User)
*/
@Override
public void update(User user){
sessionFactory.getCurrentSession().merge(user);
}
/* (non-Javadoc)
* @see cn.itcast.dao.impl.UserDao#delete(cn.itcast.domain.User)
*/
@Override
public void delete(Integer id){
sessionFactory.getCurrentSession().delete(
sessionFactory.getCurrentSession().load(User.class, id));
}
/* (non-Javadoc)
* @see cn.itcast.dao.impl.UserDao#findAll()
*/
@SuppressWarnings("unchecked")
@Override
public List<User> findAll(){
return sessionFactory.getCurrentSession().createQuery("FROM User").list();
}
}
整合成功:测试正确
3.Spring和Struts1.3的整合
web.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>classpath:beans.xml</param-value> </context-param> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> <servlet> <servlet-name>ActionServlet</servlet-name> <servlet-class>org.apache.struts.action.ActionServlet</servlet-class> <init-param> <param-name>config</param-name> <param-value>/WEB-INF/struts-config.xml</param-value> </init-param> <load-on-startup>2</load-on-startup> </servlet> <servlet-mapping> <servlet-name>ActionServlet</servlet-name> <url-pattern>*.do</url-pattern> </servlet-mapping> </web-app>
struts-config.xml
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.3//EN" "http://struts.apache.org/dtds/struts-config_1_3.dtd"> <struts-config> <action-mappings> <action path="/user/list" type="cn.itcast.web.controller.UserAction" validate="false"> <forward name="list" path="/WEB-INF/page/listUser.jsp"/> </action> </action-mappings> <controller> <set-property property="processorClass" value="org.springframework.web.struts.DelegatingRequestProcessor" /> </controller> </struts-config>
beans.xml
添加配置 <bean name="/user/list" class="cn.itcast.web.controller.UserAction"></bean>
package cn.itcast.web.controller;
import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import cn.itcast.dao.UserDao;
public class UserAction extends Action {
@Resource private UserDao dao;
@Override
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
request.setAttribute("users", dao.findAll());
return mapping.findForward("list");
}
}
测试结果:表示整合完毕！！
4.Spring和其他Web框架的整合
我们可以参考到Spring开发手册,特别的详细。
结束.....
PS:在试验过程中,将项目用Tomcat启动时,发现错误.
An internal error occurred during: "Launching PoiSearch on Tomcat 6.x". java.lang.NullPointerExcept
如果出现了上述的错误按照如下的3个步骤解决：
1、首先关闭MyEclipse工作空间。
2、然后删除工作空间下的
“/.metadata/.plugins/org.eclipse.core.runtime/.settings/com.genuitec.eclipse.ast.deploy.core.prefs”
这个文件。在这个文件中存储了一些部署项目的信息。删了这个部署的项目的信息就没有错误了。
3、重启启动MyEclipse即可解决了。
........