一. 构造方法注入
1.applicationContext.xml
<bean id="person" class="com.ibuyi.free.Case_one.Person">
<constructor-arg name="name" value="Yang"/>
<constructor-arg name="age" value="20"/>
</bean>
2.Person.java
package com.ibuyi.free.Case_one;
public class Person {
private String name;
private Integer age;
public Person(String name,Integer age){
this.name = name;
this.age = age;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
@Override
public String toString() {
return "Person{" +
"name='" + name + '\'' +
", age=" + age +
'}';
}
}
二. 静态工厂方法实例化
1.applicationContext.xml
<bean id="person" class="com.ibuyi.free.Case_one.PersonFactory"
factory-method="getPerson">
</bean>
2.PersonFactory.java
package com.ibuyi.free.Case_one;
public class PersonFactory {
public static Person getPerson(){
return new Person("Kun",25);
}
}
三. 实例工厂方法实例化
1.applicationContext.xml
<bean id="personfactory" class="com.ibuyi.free.Case_one.PersonFactory"/>
<bean id="person" factory-bean="personfactory" factory-method="getPerson"/>
2.PersonFactory.java
package com.ibuyi.free.Case_one;
public class PersonFactory {
public Person getPerson(){
return new Person("YangKun",25);
}
}