Spring中constructor-arg 和 property 属性

1、constructor-arg 和 property是两种不同的依赖注入的方式：

 

constructor-arg：通过构造函数注入。

 property：通过setxx方法注入。 

 

2、举例：

（1）、constructor-arg

 

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;
    }

}
 
  

 

 

（2）、property：

 

 

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="appkindImgService" class="com.zmks.service.impl.AppkindImgServiceImpl">
		<constructor-arg index="0" ref="appkindImgDao" />
		<property name="appkindImgDao" ref="appkindImgDao" />
	</bean>