Spring Aware标记接口使用案例解析

aware接口是一个标记接口

xxxaare在spring中表示对xxx可以感知，通俗点解释就是：如果在某个类里面想要使用spring的一些东西，就可以通过实现xxxaware接口告诉spring,spring看到后就会送过来，而接受的方式是通过实现接口唯一的方法setxxx.比如applicationcontextaware

applicationcontextaware使用

编写springaware实现applicationcontext接口

package com.rookie.bigdata.aware;

import org.springframework.beans.beansexception;
import org.springframework.context.applicationcontext;
import org.springframework.context.applicationcontextaware;

/**

 * @author rookie
 * @version 1.0
 * @date 2020/3/21 22:58
  */

public class springaware implements applicationcontextaware {

  private applicationcontext applicationcontext;
  
  //spring容器会将applicationcontext对象传入过来
  @override
  public void setapplicationcontext(applicationcontext applicationcontext) throws beansexception {
    system.out.println("传入的ioc容器applicationcontext = [" + applicationcontext + "]");
    this.applicationcontext = applicationcontext;
  }
  
  public applicationcontext getapplicationcontext() {
    return applicationcontext;
  }


}

user实体类

package com.rookie.bigdata.domain;

public class user {
  private string username;
  private string address;

  public string getusername() {
    return username;
  }
  
  public void setusername(string username) {
    this.username = username;
  }
  
  public string getaddress() {
    return address;
  }
  
  public void setaddress(string address) {
    this.address = address;
  }

}

spring-aware.xml

<?xml version="1.0" encoding="utf-8"?>
<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" xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemalocation="
          http://www.springframework.org/schema/beans
          http://www.springframework.org/schema/beans/spring-beans.xsd
          http://www.springframework.org/schema/tx
          http://www.springframework.org/schema/tx/spring-tx.xsd
          http://www.springframework.org/schema/aop
          http://www.springframework.org/schema/aop/spring-aop.xsd
          http://www.springframework.org/schema/context
          http://www.springframework.org/schema/context/spring-context.xsd">

  <bean id="user" class="com.rookie.bigdata.domain.user">
    <property name="username" value="张三"></property>
    <property name="address" value="北京"></property>
  </bean>
  
  <bean id="springaware" class="com.rookie.bigdata.aware.springaware"></bean>

</beans>

测试类

	 @test
  public void test1(){
    applicationcontext applicationcontext = new classpathxmlapplicationcontext("/aware/spring-aware.xml");

//    user user = (user) applicationcontext.getbean("user");
//    system.out.println(user);

    springaware springaware = (springaware) applicationcontext.getbean("springaware");
    applicationcontext applicationcontext1 = springaware.getapplicationcontext();
    user user = (user) applicationcontext1.getbean("user");
    system.out.println(user);
  }

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。