spring注入

1.setter 注入 :
beans.xml:

<? xml version="1.0" encoding="UTF-8" ?>

<!--
- Application context definition for JPetStore's business layer.
- Contains bean references to the transaction manager and to the DAOs in
- dataAccessContext-local/jta.xml (see web.xml's "contextConfigLocation").
-->
< 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/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd" >

< bean name ="userDao" class ="com.linying.dao.UserDao" ></ bean >

< bean name ="userDomain" class ="com.linying.domain.User" ></ bean >

< bean name ="userAction" class ="com.linying.service.UserAction" >
< property name ="user" ref ="userDomain" ></ property >
< property name ="userDao" ref ="userDao" ></ property >
</ bean >

</ beans >

User.java:

package com.linying.domain;

/**
* 领域对象
*
* @author Ying-er
* @time 2010-6-20 上午10:01:05
* @mail [email protected]
* @version 1.00
*/
public class User {
private int id;

private String name;

private String password;

public User() {
System.out.println( " User构造 " );
}

public String getName() {
return name;
}

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

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;
}
}

UserDao.java:

package com.linying.dao;

import com.linying.domain.User;

/**
* UserDao
*
* @author Ying-er
* @time 2010-6-20 上午10:17:55
* @mail [email protected]
* @version 1.00
*/
public class UserDao {
public UserDao() {
System.out.println( " UserDao构造 " );
}

public void insert(User user) {
System.out.println( " 执行insert方法 " );
}
}

UserAction.java:

package com.linying.service;

import com.linying.dao.UserDao;
import com.linying.domain.User;

/**
* UserAction
*
* @author Ying-er
* @time 2010-6-20 上午10:28:16
* @mail [email protected]
* @version 1.00
*/
public class UserAction {
private User user;

private UserDao userDao;

public UserAction() {
System.out.println( " UserAction构造 " );
}

/**
* 保存User对象
*
*/
public void saveUser() {
userDao.insert(user);
System.out.println( " saveUser方法被调用 " );
}

public void setUser(User user) {
this .user = user;
System.out.println( " setUser方法被调用 " );
}

public void setUserDao(UserDao userDao) {
this .userDao = userDao;
System.out.println( " setUserDao方法被调用 " );
}

}

测试——Main.java:

package com.linying;

import org.springframework.beans.factory.BeanFactory;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.linying.service.UserAction;

/**
* 测试程序入口
*
* @author Ying-er
* @time 2010-6-20 上午11:20:24
* @mail [email protected]
* @version 1.00
*/
public class Main {

/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
BeanFactory bf = (BeanFactory) ( new ClassPathXmlApplicationContext(
" beans.xml " ));

UserAction userAction = (UserAction) bf.getBean( " userAction " );
userAction.saveUser();

}

}

控制台输出：
UserDao构造
User构造
UserAction构造
setUser方法被调用
setUserDao方法被调用
执行insert方法
saveUser方法被调用

2.静态工厂注入 ：
修改beans.xml:

< bean name ="userDao" class ="com.linying.factory.DaoFactory" factory-method ="getUserDao" ></ bean >

< bean name ="userDomain" class ="com.linying.domain.User" ></ bean >

< bean name ="userAction" class ="com.linying.service.UserAction" >
< property name ="user" ref ="userDomain" ></ property >
< property name ="userDao" ref ="userDao" ></ property >
</ bean >

增加工厂：

package com.linying.factory;

import com.linying.dao.UserDao;
/**
* Dao静态工厂
* @author Ying-er
* @time 2010-6-20 下午04:23:25
* @mail [email protected]
* @version 1.00
*/
public class DaoFactory {
public static UserDao getUserDao(){
return new UserDao();
}
}

控制台输出：
UserDao构造
User构造
UserAction构造
setUser方法被调用
setUserDao方法被调用
执行insert方法
saveUser方法被调用

3.实例工厂注入 ：
修改beans.xml：

< bean name ="daoFactory" class ="com.linying.factory.DaoFactory" ></ bean >

< bean name ="userDao" factory-bean ="daoFactory" factory-method ="getUserDao" ></ bean >

< bean name ="userDomain" class ="com.linying.domain.User" ></ bean >

< bean name ="userAction" class ="com.linying.service.UserAction" >
< property name ="user" ref ="userDomain" ></ property >
< property name ="userDao" ref ="userDao" ></ property >
</ bean >

增加实例工厂：

package com.linying.factory;

import com.linying.dao.UserDao;
/**
* Dao实例工厂
* @author Ying-er
* @time 2010-6-20 下午04:23:25
* @mail [email protected]
* @version 1.00
*/
public class DaoFactory {
public UserDao getUserDao(){
return new UserDao();
}
}

控制台输出：
UserDao构造
User构造
UserAction构造
setUser方法被调用
setUserDao方法被调用
执行insert方法
saveUser方法被调用

4.构造器注入 ：
修改beans.xml:

< bean name ="userDao" class ="com.linying.dao.UserDao" ></ bean >

< bean name ="userDomain" class ="com.linying.domain.User" ></ bean >

< bean name ="userAction" class ="com.linying.service.UserAction" >
< constructor-arg ref ="userDomain" ></ constructor-arg >
< constructor-arg ref ="userDao" ></ constructor-arg >
</ bean >

修改UserAction.java:

package com.linying.service;

import com.linying.dao.UserDao;
import com.linying.domain.User;

/**
* UserAction
*
* @author Ying-er
* @time 2010-6-20 上午10:28:16
* @mail [email protected]
* @version 1.00
*/
public class UserAction {
private User user;

private UserDao userDao;

public UserAction() {
System.out.println( " UserAction构造 " );
}

public UserAction(User user,UserDao userDao){
System.out.println( " UserAction构造(有参构造) " );
this .user = user;
this .userDao = userDao;
}
/**
* 保存User对象
*
*/
public void saveUser() {
userDao.insert(user);
System.out.println( " saveUser方法被调用 " );
}

// public void setUser(User user) {
// this.user = user;
// System.out.println("setUser方法被调用");
// }
//
// public void setUserDao(UserDao userDao) {
// this.userDao = userDao;
// System.out.println("setUserDao方法被调用");
// }

}

控制台输出：
UserDao构造
User构造
UserAction构造(有参构造)
执行insert方法
saveUser方法被调用

5.集合注入 ：
beans.xml:

< bean name ="daoFactory" class ="com.linying.factory.DaoFactory" ></ bean >

< bean name ="userDao" factory-bean ="daoFactory"
factory-method ="getUserDao" >
</ bean >

< bean name ="userDomain" class ="com.linying.domain.User" >
< property name ="id" >
< value > 1 </ value >
</ property >
< property name ="name" value ="admin" ></ property >
< property name ="password" value ="123" ></ property >
<!-- property name="birthday" value="1987-06-20"></property> -->
< property name ="listDemo" >
< list >
< value > list-1 </ value >
< value > list-2 </ value >
</ list >
</ property >
< property name ="setDemo" >
< set >
< value > set-1 </ value >
< value > set-2 </ value >
</ set >
</ property >
< property name ="mapDemo" >
< map >
< entry key ="k1" value ="v1" ></ entry >
< entry key ="k2" value ="v2" ></ entry >
</ map >
</ property >
</ bean >

< bean name ="userAction" class ="com.linying.service.UserAction" >
< property name ="user" ref ="userDomain" ></ property >
< property name ="userDao" ref ="userDao" ></ property >
</ bean >

User.java:

package com.linying.domain;

import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.Set;

/**
* 领域对象
*
* @author Ying-er
* @time 2010-6-20 上午10:01:05
* @mail [email protected]
* @version 1.00
*/
public class User {
private int id;

private String name;

private String password;

private Date birthday;

private List < String > listDemo;

private Set < String > setDemo;

private Map < String, String > mapDemo;

public User() {
System.out.println( " User构造 " );
}

public String getName() {
return name;
}

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

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;
}

public Date getBirthday() {
return birthday;
}

public void setBirthday(Date birthday) {
this .birthday = birthday;
}

public List < String > getListDemo() {
return listDemo;
}

public void setListDemo(List < String > listDemo) {
this .listDemo = listDemo;
}

public Map < String, String > getMapDemo() {
return mapDemo;
}

public void setMapDemo(Map < String, String > mapDemo) {
this .mapDemo = mapDemo;
}

public Set < String > getSetDemo() {
return setDemo;
}

public void setSetDemo(Set < String > setDemo) {
this .setDemo = setDemo;
}

}

Main.java:

package com.linying;

import org.springframework.beans.factory.BeanFactory;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.linying.service.UserAction;

/**
* 测试程序入口
*
* @author Ying-er
* @time 2010-6-20 上午11:20:24
* @mail [email protected]
* @version 1.00
*/
public class Main {

/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
BeanFactory bf = (BeanFactory) ( new ClassPathXmlApplicationContext(
" beans.xml " ));

UserAction userAction = (UserAction) bf.getBean( " userAction " );
System.out.println(userAction.getUser().getId());
System.out.println(userAction.getUser().getName());
System.out.println(userAction.getUser().getPassword());
// System.out.println(userAction.getUser().getBirthday());
System.out.println(userAction.getUser().getListDemo());
System.out.println(userAction.getUser().getSetDemo());
System.out.println(userAction.getUser().getMapDemo());
}
}

控制台输出：
UserDao构造
User构造
UserAction构造
setUser方法被调用
setUserDao方法被调用
1
admin
123
[list-1, list-2]
[set-1, set-2]
{k1=v1, k2=v2}

 

转自：http://www.blogjava.net/crazycoding/archive/2010/06/20/324002.html