实例展示
spring中@ConstructorProperties的作用,以具体实例来解释：
下面是写的HelloService和NewHello的Bean1
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24public class HelloService {
public String sayHello(){
return "hello";
}
}
import java.beans.ConstructorProperties;
public class NewHello {
private HelloService service;
private String hello;
//@ConstructorProperties({"service","hello"})
public NewHello(HelloService service, String hello) {
this.service = service;
this.hello = hello;
}
public void sayNewHello(){
System.out.println("new hello");
System.out.println(service.sayHello());
}
}
对应的xml文件中的配置为：1
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6<bean id="helloService" class="com.lyk.service.HelloService"/>
<bean id="newHello" class="com.lyk.service.NewHello">
<constructor-arg name="hello" value="hello"/>
<constructor-arg name="service" ref="helloService"/>
</bean>
使用@ConstructorProperties注解时，可以通过制定变量名来改变xml文件中constructor-arg的 name名字，比如
@ConstructorProperties({“service1”,”hello1”})，在xml文件中要对应的配置为1
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4<bean id="newHello" class="com.lyk.service.NewHello">
<constructor-arg name="hello1" value="hello"/>
<constructor-arg name="service1" ref="helloService"/>
</bean>