实体类--字符串不能正常输出

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最新推荐文章于 2024-06-29 21:10:12 发布

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分类专栏：后端 Spring 报错处理

本文链接：https://blog.youkuaiyun.com/hongmeipopo73/article/details/83690323

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本文探讨了在Spring配置文件中设置Hadoop课程属性的问题，包括课程名称、课时及教师引用的正确配置方式。同时，深入分析了Teacher类的toString()方法对于输出教师信息的重要性。

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hadoop,300,org.lanqiao.entity.Teacher@5fbe4146

<bean id="course" class="org.lanqiao.entity.Course" p:courseName="hadoop" p:courseHour="300" p:teacher-ref="teacher">
	<!--  	<property name="courseName" value="java"></property>
		<property name="courseHour" value="200"></property>
		<property name="teacher" ref="teacher"></property>-->
		<constructor-arg value="c" name="courseName"/>
		<constructor-arg value="200" name="courseHour"/>
		<constructor-arg ref="teacher"/>
	</bean>

病因：忘记加 toString 不能将字符串

hadoop,300,Teacher [name=zs, age=23]

package org.lanqiao.entity;

public class Teacher {
	private String name;
	private int age;
	public Teacher() {
	}
	public Teacher(String name, int age) {
		this.name = name;
		this.age = age;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	} 
}

package org.lanqiao.entity;

public class Teacher {
	private String name;
	private int age;
	public Teacher() {
	}
	public Teacher(String name, int age) {
		this.name = name;
		this.age = age;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	@Override
	public String toString() {
		return "Teacher [name=" + name + ", age=" + age + "]";
	}
}