java.lang.IllegalArgumentException异常处理的一种方法

我遇到的问题

用spring注解来加载bean，都是一个简单的了，但是还是报了这样一个错java.lang.IllegalArgumentException

网上查了一下，说是jdk版本要1.7的，然后我就改了，就好了。

Person.java

 package com.xiaostudy.service;
 
 import org.springframework.stereotype.Component;
 
 @Component("person")
 public class Person {
 
 }

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"
        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">
 
     <context:component-scan base-package="com.xiaostudy.service"></context:component-scan>
 </beans>

测试类Test.java

 package com.xiaostudy.service;
 
 import org.springframework.context.ApplicationContext;
 import org.springframework.context.support.ClassPathXmlApplicationContext;
 
 import com.xiaostudy.service.Person;
 
 public class Test {
 
     public static void main(String[] args) {
         ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");
         Person person = ac.getBean("person", Person.class);
         System.out.println(person);
     }
 
 }

错误信息

Exception in thread "main" org.springframework.beans.factory.BeanDefinitionStoreException: Failed to read candidate component class: file [E:\IT\spring3\demo9\bin\com\xiaostudy\service\Person.class]; nested exception is java.lang.IllegalArgumentException

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解决问题

1、把eclipse的jdk调整为1.7

2、新建项目的jdk选择1.7

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