类文件Spring中空值的写法-java教程
查了好多资料,发现还是不全,干脆自己整理吧,至少保证在我的做法正确的,以免误导读者,也是给自己做个记录吧!
1、Member类
package www.csdn.spring1.dao;
public class Member {
	private String name;
	private Dept dept;
	public void setName(String name) {
		this.name = name;
	}
	public void setDept(Dept dept) {
		this.dept = dept;
	}
	@Override
	public String toString() {
		return "Member [name=" + name + ", dept=" + dept + "]";
	}
	
}
    
 2、Dept类
package www.csdn.spring1.dao;
public class Dept {
	private String name;
	private String deptno;
	public void setName(String name) {
		this.name = name;
	}
	public void setDeptno(String deptno) {
		this.deptno = deptno;
	}
	
}
    
 3、xml文件
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans.xsd">
      
   <bean id="member" class="www.csdn.spring1.dao.Member">
   	<property name="name">
   		<null/>
   	</property>
   	<property name="dept">
   		<null/>
   	</property>
   </bean>
    
</beans>
    
 4、测试类
package www.csdn.spring1.test;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import www.csdn.spring1.dao.Member;
public class NullTest {
	@Test
	public void nullTest(){
		ApplicationContext context=new ClassPathXmlApplicationContext("classpath:spring-null.xml");
		Member m=context.getBean("member", Member.class);
		System.out.println(m.toString());
	}
}
    
  
文章结束给大家分享下程序员的一些笑话语录: 
 一边用着越狱的ip,一边拜乔帮主的果粉自以为是果粉,其实在乔帮主的眼里是不折不扣的叛徒。
 
                    
                
 
 
                
            
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浙公网安备 33010602011771号