Bean named 'target' is expected to be of type 'com.ming.aop.Target' but was actually of type 'com.sun.proxy.$Proxy16'报错处理

今天在做xml配置AOP遇到的报错 文件如下
1.pom.xml文件 
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.example</groupId>
    <artifactId>SpringAop</artifactId>
    <version>1.0-SNAPSHOT</version>
    
    <dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>5.2.5.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.9.5</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.13.1</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>5.2.5.RELEASE</version>
        </dependency>
    </dependencies>
  
</project>
2.Target.java 目标对象

package com.ming.aop;

public class Target implements TargetInterface{
    public void save() {
        System.out.printf("save running...");
    }
}

3.TargetInterface.java

package com.ming.aop;

public interface TargetInterface {
    public void save();
}

4.MyAspect.java 切面对象

package com.ming.aop;

public class MyAspect {
    public void before(){
        System.out.println("前置增强...");
    }

}

5.applicationContext.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:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
                            http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
                            http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd">
    <!--目标对象-->
    <bean id="target" class="com.ming.aop.Target"/>
    <!--切面对象-->
    <bean id="myAspect" class="com.ming.aop.MyAspect"/>
    <!--告诉Spring框架哪些方法（切点）需要哪些增强（前置，后置...）-->
    <aop:config>
        <!--声明切面-->
        <aop:aspect ref="myAspect" >
            <aop:before method="before" pointcut="execution(public void com.ming.aop.Target.save())"></aop:before>
        </aop:aspect>
    </aop:config>

</beans>
6.SpringAopTest.java

package com.ming.Test;

import com.ming.aop.Target;
import com.ming.aop.TargetInterface;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:applicationContext.xml")
public class SpringAopTest {

    /*今天在这里犯错了 导致我报错Bean named 'target' is expected to be of type 'com.ming.aop.Target' but was actually of type 'com.sun.proxy.$Proxy16'
    我注入的是Target这个接口 我真的该死 还没记住
     测谁就要写谁 要记住这里是注入接口而不是实现类！！！！！！！！！！！！
      写代码 要细心 要明白每一步的作用 不要写得不明不白的*/
    @Autowired
    private TargetInterface target;

    @Test
    public void test1(){
        target.save();
    }


}