s2sh整合<二>

这里我们需要使用spring的ioc将DAO诸如到service中，所以不要忘记在service实现类中加入DAO作为属性。
PersonServiceImpl.java

Java代码 

1.package test.s2sh.service.impl;   
2.  
3.import java.util.List;    
4.  
5.import test.s2sh.bean.Person;    
6.import test.s2sh.dao.PersonDAO;    
7.import test.s2sh.service.PersonService;    
8.  
9.public class PersonServiceImpl implements PersonService {    
10.    private PersonDAO personDAO;    
11.    public void delete(Person p) {    
12.        this.personDAO.removePerson(p);    
13.    }   
14.  
15.    public List<Person> findAll() {    
16.        return this.personDAO.findAllPersons();    
17.    }   
18.  
19.    public Person findById(Integer id) {    
20.        return this.personDAO.findPersonById(id);    
21.    }   
22.  
23.    public void save(Person p) {    
24.        this.personDAO.savePerson(p);    
25.    }   
26.  
27.    public void update(Person p) {    
28.        this.personDAO.updatePerson(p);    
29.    }   
30.  
31.    public PersonDAO getPersonDAO() {    
32.        return personDAO;    
33.    }   
34.  
35.    public void setPersonDAO(PersonDAO personDAO) {    
36.        this.personDAO = personDAO;    
37.    }   
38.  
39.}  

Java代码

1.package test.<SPAN class=hilite1>s2sh</SPAN>.service.impl;   
2.  
3.import java.util.List;   
4.  
5.import test.<SPAN class=hilite1>s2sh</SPAN>.bean.Person;   
6.import test.<SPAN class=hilite1>s2sh</SPAN>.dao.PersonDAO;   
7.import test.<SPAN class=hilite1>s2sh</SPAN>.service.PersonService;   
8.  
9.public class PersonServiceImpl implements PersonService {   
10.    private PersonDAO personDAO;   
11.    public void delete(Person p) {   
12.        this.personDAO.removePerson(p);   
13.    }   
14.  
15.    public List<Person> findAll() {   
16.        return this.personDAO.findAllPersons();   
17.    }   
18.  
19.    public Person findById(Integer id) {   
20.        return this.personDAO.findPersonById(id);   
21.    }   
22.  
23.    public void save(Person p) {   
24.        this.personDAO.savePerson(p);   
25.    }   
26.  
27.    public void update(Person p) {   
28.        this.personDAO.updatePerson(p);   
29.    }   
30.  
31.    public PersonDAO getPersonDAO() {   
32.        return personDAO;   
33.    }   
34.  
35.    public void setPersonDAO(PersonDAO personDAO) {   
36.        this.personDAO = personDAO;   
37.    }   
38.  
39.}  

package test.s2sh.service.impl;

import java.util.List;

import test.s2sh.bean.Person;
import test.s2sh.dao.PersonDAO;
import test.s2sh.service.PersonService;

public class PersonServiceImpl implements PersonService {
	private PersonDAO personDAO;
	public void delete(Person p) {
		this.personDAO.removePerson(p);
	}

	public List<Person> findAll() {
		return this.personDAO.findAllPersons();
	}

	public Person findById(Integer id) {
		return this.personDAO.findPersonById(id);
	}

	public void save(Person p) {
		this.personDAO.savePerson(p);
	}

	public void update(Person p) {
		this.personDAO.updatePerson(p);
	}

	public PersonDAO getPersonDAO() {
		return personDAO;
	}

	public void setPersonDAO(PersonDAO personDAO) {
		this.personDAO = personDAO;
	}

}

(6)接下来我们开始对action层进行设置，实际项目中的action可能会有很多，所以我们这里需要对action进行分包，因为我们这里针对Person进行操作，所以我们创建test.s2sh.action.person.
这里先做保存操作
SavePersonAction.java

Java代码 

1.package test.s2sh.action.person;   
2.  
3.import test.s2sh.bean.Person;    
4.import test.s2sh.service.PersonService;    
5.  
6.import com.opensymphony.xwork2.ActionSupport;    
7.  
8.public class SavePersonAction extends ActionSupport {    
9.    private Person p;    
10.    private PersonService service;    
11.    public Person getP() {    
12.        return p;    
13.    }   
14.    public void setP(Person p) {    
15.        this.p = p;    
16.    }   
17.    public PersonService getService() {    
18.        return service;    
19.    }   
20.    public void setService(PersonService service) {    
21.        this.service = service;    
22.    }   
23.       
24.    public String execute() throws Exception {    
25.        this.service.save(p);    
26.        return this.SUCCESS;    
27.    }   
28.       
29.    public void validate() {    
30.        if(p.getName()==null||"".equals(p.getName())){    
31.            this.addFieldError("p.name", "name is not null");    
32.        }   
33.    }   
34.       
35.}  
Java代码 
1.package test.<SPAN class=hilite1>s2sh</SPAN>.action.person;   
2.  
3.import test.<SPAN class=hilite1>s2sh</SPAN>.bean.Person;   
4.import test.<SPAN class=hilite1>s2sh</SPAN>.service.PersonService;   
5.  6.import com.opensymphony.xwork2.ActionSupport;   
7.  
8.public class SavePersonAction extends ActionSupport {   
9.    private Person p;   
10.    private PersonService service;   
11.    public Person getP() {   
12.        return p;   
13.    }   
14.    public void setP(Person p) {   
15.        this.p = p;   
16.    }   
17.    public PersonService getService() {   
18.        return service;   
19.    }   
20.    public void setService(PersonService service) {   
21.        this.service = service;   
22.    }   
23.       
24.    public String execute() throws Exception {   
25.        this.service.save(p);   
26.        return this.SUCCESS;   
27.    }   
28.       
29.    public void validate() {   
30.        if(p.getName()==null||"".equals(p.getName())){   
31.            this.addFieldError("p.name", "name is not null");   
32.        }   
33.    }   
34.       
35.}  

package test.s2sh.action.person;

import test.s2sh.bean.Person;
import test.s2sh.service.PersonService;

import com.opensymphony.xwork2.ActionSupport;

public class SavePersonAction extends ActionSupport {
	private Person p;
	private PersonService service;
	public Person getP() {
		return p;
	}
	public void setP(Person p) {
		this.p = p;
	}
	public PersonService getService() {
		return service;
	}
	public void setService(PersonService service) {
		this.service = service;
	}
	
	public String execute() throws Exception {
		this.service.save(p);
		return this.SUCCESS;
	}
	
	public void validate() {
		if(p.getName()==null||"".equals(p.getName())){
			this.addFieldError("p.name", "name is not null");
		}
	}
	
}

下面创建一个保存人员的提交页面
save.jsp

Java代码 

1.<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>   
2.<%@ taglib prefix="s" uri="/struts-tags" %>    
3.  
4.<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">    
5.<html>   
6.  <head>   
7.       
8.    <title>Save Person</title>   
9.  
10.  </head>   
11.     
12.  <body>   
13.    <s:form action="savePerson">    
14.        <s:textfield name="p.name" label="name"></s:textfield>    
15.        <s:textfield name="p.age" label="age"></s:textfield>    
16.        <s:submit></s:submit>   
17.    </s:form>   
18.  </body>   
19.</html>  
Java代码 
1.<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>   
2.<%@ taglib prefix="s" uri="/struts-tags" %>   
3.  
4.<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">   
5.<html>   
6.  <head>   
7.       
8.    <title>Save Person</title>   
9.  
10.  </head>   
11.     
12.  <body>   
13.    <s:form action="savePerson">   
14.        <s:textfield name="p.name" label="name"></s:textfield>   
15.        <s:textfield name="p.age" label="age"></s:textfield>   
16.        <s:submit></s:submit>   
17.    </s:form>   
18.  </body>   
19.</html>  

<%@ 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>Save Person</title>

  </head>
  
  <body>
    <s:form action="savePerson">
    	<s:textfield name="p.name" label="name"></s:textfield>
    	<s:textfield name="p.age" label="age"></s:textfield>
    	<s:submit></s:submit>
    </s:form>
  </body>
</html>

操作成功页面
save-success.jsp

Java代码 

1.<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>   
2.  
3.<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">    
4.<html>   
5.  <head>   
6.    <title>Save OK</title>   
7.  </head>   
8.     
9.  <body>   
10.    保存成功 <br>   
11.  </body>   
12.</html>  

Java代码

1.<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>   
2.  
3.<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">   
4.<html>   
5.  <head>   
6.    <title>Save OK</title>   
7.  </head>   
8.     
9.  <body>   
10.    保存成功 <br>   
11.  </body>   
12.</html>  
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <title>Save OK</title>
  </head>
  
  <body>
    保存成功 <br>
  </body>
</html>

接下来我们需要配置struts.xml,创建action

Xml代码 

1.<action name="savePerson" class="savePersonAction">  
2.    <result name="success" type="redirect">/save-success.jsp</result>   
3.    <result name="input">/save.jsp</result>   
4.</action>   
Xml代码 
1.<action name="savePerson" class="savePersonAction">  
2.    <result name="success" type="redirect">/save-success.jsp</result>  
3.    <result name="input">/save.jsp</result>  
4.</action>  
<action name="savePerson" class="savePersonAction">
	<result name="success" type="redirect">/save-success.jsp</result>
	<result name="input">/save.jsp</result>
</action>
1.<bean id="personDAO" class="test.s2sh.dao.impl.PersonDAOImpl" scope="singleton">  
2.    <!-- 由于该类是继承于HibernateDaoSupport，所以需要将sessionFactory注入 -->   
3.    <property name="sessionFactory" >   
4.        <ref bean="sessionFactory"/>   
5.    </property>   
6.</bean>   
7.<bean id="personService" class="test.s2sh.service.impl.PersonServiceImpl">   
8.    <property name="personDAO" ref="personDAO"></property>   
9.</bean>   
10.<bean id="savePersonAction" class="test.s2sh.action.person.SavePersonAction" scope="prototype">   
11.    <property name="service" ref="personService"></property>   
12.</bean>   
Xml代码 
1.<bean id="personDAO" class="test.<SPAN class=hilite1>s2sh</SPAN>.dao.impl.PersonDAOImpl" scope="singleton">  
2.    <!-- 由于该类是继承于HibernateDaoSupport，所以需要将sessionFactory注入 -->  
3.    <property name="sessionFactory" >  
4.        <ref bean="sessionFactory"/>  
5.    </property>  
6.</bean>  
7.<bean id="personService" class="test.<SPAN class=hilite1>s2sh</SPAN>.service.impl.PersonServiceImpl">  
8.    <property name="personDAO" ref="personDAO"></property>  
9.</bean>  
10.<bean id="savePersonAction" class="test.<SPAN class=hilite1>s2sh</SPAN>.action.person.SavePersonAction" scope="prototype">  
11.    <property name="service" ref="personService"></property>  
12.</bean>  
<bean id="personDAO" class="test.s2sh.dao.impl.PersonDAOImpl" scope="singleton">
	<!-- 由于该类是继承于HibernateDaoSupport，所以需要将sessionFactory注入 -->
	<property name="sessionFactory" >
		<ref bean="sessionFactory"/>
	</property>
</bean>
<bean id="personService" class="test.s2sh.service.impl.PersonServiceImpl">
	<property name="personDAO" ref="personDAO"></property>
</bean>
<bean id="savePersonAction" class="test.s2sh.action.person.SavePersonAction" scope="prototype">
	<property name="service" ref="personService"></property>
</bean>

由于现在的action的创建已经由spring所接管，所以这里class里面使用的是别名，该别名与applicationContext.xml中的id对应.

接下来我们需要配置applicationContext的ioc。

Xml代码 

这里说明一下spring中的单例与设计模式中的单例不同，设计模式的单例是在jvm中只产生一个实例，而spring中的单例
是针对每个ioc容器来言，如果存在两个ioc容器，那么每个ioc容器都会生成唯一的类实例
将sessionFactory注入Dao中,这里的Dao来说是无状态的，可以设置为单例singleton。这里的action是使用spring创建的。
struts2与struts1的action有所不同，因为struts2中的action中可能存在属性,这里是Person，所以struts2的action可能是有状态的。
如果是有状态的我们就需要将scope设置成原型模式，即每次请求都新建一个action。
不然可能会出现如果表单提交的第一次出错，之后就再也提交不过去了，值就是应为使用默认的singleton，
当第一次的时候就将FieldError中加入了错误，每次都是这个action，始终带着这个错误，所以就提交不过去了。