property和constructor-arg的使用

 

看到这篇文章就转过来了，简单明了，本着分享精神，供大家参考

 

由于好久没去看spring的东西，以前的知道差不多都忘记了，今天重新学习一下如何使用，以后在慢慢的一个一个知识点的深究。我发现学过的东西还是要记录下来，否则以后又要重新找资料。纯属个人学习笔记。

一：依赖注入的方式
  constructor-arg：通过构造函数注入。
  property：通过setxx方法注入。

二：constructor-arg的简单使用
  java代码
 

   public class Man {

private String name ;
private int age;
private List hobby;
private Map  friends;
private Set  set;
private boolean ifMarried;

public Man() {

}

   public Man(String name, int age,List hobby,Map friends,Set    set,boolean ifMarried){
    this.name = name;
    this.age = age;
    this.hobby = hobby;
    this.friends = friends;
    this.set = set;
    this.ifMarried = ifMarried;
   }

   public String getInfo(){

    String info = "姓名："+this.name+"\n年龄:"+this.age+"\n爱好:"+this.hobby+"\n朋友:"+this.friends+"\n婚否:"+this.ifMarried+"\n其他的："+this.set;
       return info;
   }

    public class Man {

	private String name ;
	private int age;
	private List hobby;
	private Map  friends;
	private Set  set;
	private boolean ifMarried;
	
	public Man() {
		
	}
	
    public Man(String name, int age,List hobby,Map friends,Set    set,boolean ifMarried){
    	this.name = name;
    	this.age = age;
    	this.hobby = hobby;
    	this.friends = friends;
    	this.set = set;
    	this.ifMarried = ifMarried;
    }
    
    public String getInfo(){
    	
    	String info = "姓名："+this.name+"\n年龄:"+this.age+"\n爱好:"+this.hobby+"\n朋友:"+this.friends+"\n婚否:"+this.ifMarried+"\n其他的："+this.set;
        return info;
    }

}
 
  

  xml配置文件

<bean id="man" class="com.spring.test.man.Man">
   <constructor-arg value="zzy" index="0" >
   </constructor-arg>

   <constructor-arg value="10" index="1">
   </constructor-arg>

   <constructor-arg>
     <list>
        <value>movie</value>
        <value>music</value>
     </list>
   </constructor-arg>

   <constructor-arg>
      <set>
         <value>Lady is GaGa</value>
         <value>GaGa is Lady</value>
      </set>
   </constructor-arg>

   <constructor-arg>
       <map>
          <entry key="liuhua" value="man"></entry>
          <entry key="xujinglei" value="female"></entry>
       </map>
   </constructor-arg>

   <constructor-arg index="5" value="0">
   </constructor-arg>
</bean>

	<bean id="man" class="com.spring.test.man.Man">
	   <constructor-arg value="zzy" index="0" >
	   </constructor-arg>
	   
	   <constructor-arg value="10" index="1">
	   </constructor-arg>
	  
	   <constructor-arg>
	     <list>
	        <value>movie</value>
	        <value>music</value>
	     </list>
	   </constructor-arg>
	   
	   <constructor-arg>
	      <set>
	         <value>Lady is GaGa</value>
	         <value>GaGa is Lady</value>
	      </set>
	   </constructor-arg>

	   <constructor-arg>
	       <map>
	          <entry key="liuhua" value="man"></entry>
	          <entry key="xujinglei" value="female"></entry>
	       </map>
	   </constructor-arg>
	   
	   <constructor-arg index="5" value="0">
	   </constructor-arg>
	</bean>

最后一个参数ifMarried是一个boolean类型的参数，在配置的时候可以是true/false或者0/1；

二：property的简单使用
  java代码：

  

public class Doctor {

    private String name;
    private String sex;


    public String getName() {
        return name;
    }


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



    public String getSex() {
        return sex;
    }


    public void setSex(String sex) {
        this.sex = sex;
    }


    public void init(){
        System.out.println("88888888888");
    }
    public void init(String name,String sex){
        this.name = name;
        this.sex = sex;
    }
}

public class Doctor {

	private String name;
	private String sex;
	
	
	public String getName() {
		return name;
	}


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

	

	public String getSex() {
		return sex;
	}


	public void setSex(String sex) {
		this.sex = sex;
	}


	public void init(){
		System.out.println("88888888888");
	}
	public void init(String name,String sex){
		this.name = name;
		this.sex = sex;
	}
}

xml配置文件:

<bean id="doctor" class="com.spring.test.man.Doctor" init-method="init">
 <property name="name" value="doctor"></property>
 <property name="sex" value="i don't know"></property>
lt;/bean>

  <bean id="doctor" class="com.spring.test.man.Doctor" init-method="init">
	  <property name="name" value="doctor"></property>
	  <property name="sex" value="i don't know"></property>
	</bean>

   

在这里我配置了一个init-method="init"表示在容易实例化这个doctor的时候，调用一个Doctor类的init方法，本来还以为可以通过这个init方法来注入要注入的信息，但是尝试过后才知道这个init方法是不能带参数的。