Spring的注入方法小结
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 melody.crazycoding@gmail.com
 * @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 melody.crazycoding@gmail.com
 * @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 melody.crazycoding@gmail.com
 * @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 melody.crazycoding@gmail.com
 * @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 melody.crazycoding@gmail.com
 * @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 melody.crazycoding@gmail.com
 * @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 melody.crazycoding@gmail.com
 * @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 melody.crazycoding@gmail.com
 * @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 melody.crazycoding@gmail.com
 * @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}





posted on 2010-06-20 20:26 Ying-er 阅读(4093) 评论(3)  编辑  收藏 所属分类: SSH

评论:
# re: Spring的注入方法小结 2010-06-22 10:35 | 爱之谷
UserDao构造
User构造
UserAction构造
setUser方法被调用
setUserDao方法被调用  回复  更多评论
  
# re: Spring的注入方法小结 2010-06-22 20:21 | Ying-er
@爱之谷
啥意思？  回复  更多评论
  
# re: Spring的注入方法小结[未登录] 2010-06-24 08:41 | snail
注入方式还挺多的啊！  回复  更多评论
  

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