SpringIOC_02 正确的为各种属性赋值

以你之姓@ 2023-06-18 11:55 3阅读 0赞

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***本人是个新手，写下博客用于自我复习、自我总结。  
如有错误之处，请各位大佬指出。  
学习资料来源于：尚硅谷***

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Person.java ：

import java.util.List;
    import java.util.Map;
    import java.util.Properties;
    
    
    public class Person { 
    	
    	//基本类型直接使用
    	//<property name="lastName" value="张三"></property>它会自动进行类型转换
    	private String lastName;
    	private Integer age;
    	private String gender;
    	private String email;
    	
    	
    	private Car car;
    	private List<Book> books;	
    	private Map<String, Object> maps;	
    	private Properties properties;
    	
    	
    	public Car getCar() { 
    		return car;
    	}
    	public void setCar(Car car) { 
    		this.car = car;
    	}
    	public List<Book> getBooks() { 
    		return books;
    	}
    	public void setBooks(List<Book> books) { 
    		this.books = books;
    	}
    	public Map<String, Object> getMaps() { 
    		return maps;
    	}
    	public void setMaps(Map<String, Object> maps) { 
    		this.maps = maps;
    	}
    	public Properties getProperties() { 
    		return properties;
    	}
    	public void setProperties(Properties properties) { 
    		this.properties = properties;
    	}
    	
    	
    	public Person(String lastName, Integer age, String gender) { 
    		super();
    		this.lastName = lastName;
    		this.age = age;
    		this.gender = gender;
    		System.out.println("三个参数的构造器...age");
    	}
    	public Person(String lastName, String email, String gender) { 
    		super();
    		this.lastName = lastName;
    		this.gender = gender;
    		this.email = email;
    		System.out.println("三个参数的构造器...email");
    	}
    	
    	public Person(String lastName, Integer age, String gender, String email) { 
    		super();
    		this.lastName = lastName;
    		this.age = age;
    		this.gender = gender;
    		this.email = email;
    		System.out.println("有参构造器...");
    	}
    	public Person() { 
    		super();
    		// TODO Auto-generated constructor stub
    		System.out.println("person创建了...");
    	}
    	public String getLastName() { 
    		return lastName;
    	}
    	public void setLastName(String lastName) { 
    		this.lastName = lastName;
    		System.out.println("setLastName..."+lastName);
    	}
    	public Integer getAge() { 
    		return age;
    	}
    	public void setAge(Integer age) { 
    		this.age = age;
    	}
    	public String getGender() { 
    		return gender;
    	}
    	public void setGender(String gender) { 
    		this.gender = gender;
    	}
    	public String getEmail() { 
    		return email;
    	}
    	public void setEmail(String email) { 
    		this.email = email;
    	}
    	@Override
    	public String toString() { 
    		return "Person [lastName=" + lastName + ", age=" + age + ", gender="
    				+ gender + ", email=" + email + ", car=" + car + ", books="
    				+ books + ", maps=" + maps + ", properties=" + properties + "]";
    	}
    	
    	
    }

Airplane.java：

public class AirPlane { 
    	private String fdj; //发动机
    	private String yc;  //翼长
    	private Integer personNumber; //载客量
    	private String jzName; //机长名字
    	private String fjsName; //副驾驶名字
    	public String getFdj() { 
    		return fdj;
    	}
    	public void setFdj(String fdj) { 
    		this.fdj = fdj;
    	}
    	public String getYc() { 
    		return yc;
    	}
    	public void setYc(String yc) { 
    		this.yc = yc;
    	}
    	public Integer getPersonNumber() { 
    		return personNumber;
    	}
    	public void setPersonNumber(Integer personNumber) { 
    		this.personNumber = personNumber;
    	}
    	public String getJzName() { 
    		return jzName;
    	}
    	public void setJzName(String jzName) { 
    		this.jzName = jzName;
    	}
    	public String getFjsName() { 
    		return fjsName;
    	}
    	public void setFjsName(String fjsName) { 
    		this.fjsName = fjsName;
    	}
    	@Override
    	public String toString() { 
    		return "AirPlane [fdj=" + fdj + ", yc=" + yc + ", personNumber="
    				+ personNumber + ", jzName=" + jzName + ", fjsName=" + fjsName
    				+ "]";
    	}
    	
    	
    }

Book.java：

public class Book { 
    
    	private String bookName;
    	private String author;
    	
    	public Book(){ 
    		super();
    		System.out.println("book被创建...");
    	}
    	
    	public String getBookName() { 
    		return bookName;
    	}
    	public void setBookName(String bookName) { 
    		this.bookName = bookName;
    	}
    	public String getAuthor() { 
    		return author;
    	}
    	public void setAuthor(String author) { 
    		this.author = author;
    	}
    	@Override
    	public String toString() { 
    		return "Book [bookName=" + bookName + ", author=" + author + "]";
    	}
    	
    }

Car.java：

public class Car { 
    	private String carName;
    	private Integer price;
    	private String color;
    	
    	public Car(){ 
    		super();
    		System.out.println("car被创建...");
    	}
    	
    	public String getCarName() { 
    		return carName;
    	}
    	public void setCarName(String carName) { 
    		this.carName = carName;
    	}
    	public Integer getPrice() { 
    		return price;
    	}
    	public void setPrice(Integer price) { 
    		this.price = price;
    	}
    	public String getColor() { 
    		return color;
    	}
    	public void setColor(String color) { 
    		this.color = color;
    	}
    	@Override
    	public String toString() { 
    		return "Car [carName=" + carName + ", price=" + price + ", color="
    				+ color + "]";
    	}
    	
    }

ioc2.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:p="http://www.springframework.org/schema/p" xmlns:util="http://www.springframework.org/schema/util" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-4.0.xsd">
    
    	
    	 <bean id="car01" class="com.guigu.bean.Car">
    	 	<property name="carName" value="宝马"></property>
    	 	<property name="color" value="绿色"></property>
    	 	<property name="price" value="30000"></property>
    	 </bean>
    	 
    	 <bean id="person01" class="com.guigu.bean.Person">
    	 	
    	 	<property name="lastName">
    	 		
    	 		<null/>
    	 	</property>
    	 	
    	 	<property name="car">
    	 		
    	 		
    	 		<bean class="com.guigu.bean.Car">
    	 			<property name="carName" value="自行车"></property>
    	 		</bean>
    	 	</property>
    	 </bean>
    
    	 <bean id="book01" class="com.guigu.bean.Book">
    	 	<property name="bookName" value="东游记"></property>
    	 </bean>
    	 
    	 <bean id="person02" class="com.guigu.bean.Person">
    	 	
    	 	<property name="books">
    	 		
    	 		<list>
    	 			
    	 			<bean class="com.guigu.bean.Book" p:bookName="西游记"></bean>
    	 			
    	 			<ref bean="book01"/>
    	 		</list>
    	 	</property>
    	 	
    	 	<property name="maps">
    	 		
    	 		<map>
    	 			
    	 			<entry key="01" value="张三"></entry>
    	 			<entry key="02" value="18"></entry>
    	 			<entry key="03" value-ref="book01"></entry>
    	 			<entry key="04">
    	 				<bean class="com.guigu.bean.Car">
    	 					<property name="carName" value="奔驰"></property>
    	 				</bean>
    	 			</entry>
    	 			<entry key="05">
    	 				<value>李四</value>
    	 			</entry>
    	 		</map>
    	 	</property>
    	 	
    	 	<property name="properties">
    	 		
    	 		<props>
    	 			
    	 			<prop key="username">root</prop>
    	 			<prop key="password">123456</prop>
    	 		</props>
    	 	</property>
    	 </bean>
    	 
    	 
    	 <bean id="person03" class="com.guigu.bean.Person">
    	 	<property name="maps" ref="myMap"></property>
    	 </bean>
    	 
    	 <util:map id="myMap">
    	 	
    	 	
    	 	<entry key="01" value="张三"></entry>
    	 	<entry key="02" value="18"></entry>
    	 	<entry key="03" value-ref="book01"></entry>
    	 	<entry key="04">
    	 		<bean class="com.guigu.bean.Car">
    	 			<property name="carName" value="奔驰"></property>
    	 		</bean>
    	 	</entry>
    	 	<entry key="05">
    	 		<value>李四</value>
    	 	</entry>
    	 </util:map>
    	 
    	 
    	 <util:list id="myList">
    	 	<list></list>
    	 	<bean class="com.guigu.bean.Person"></bean>
    	 	<value>12</value>
    	 	<ref bean="myMap"/>
    	 </util:list>
    	 
    	 
    	 <bean id="person04" class="com.guigu.bean.Person">
    	 	
    	 	<property name="car" ref="car01"></property>
    	 	<property name="car.price" value="900000"></property>
    	 </bean>
    	 
    	 
    	  
    	  
    	 <bean id="person05" class="com.guigu.bean.Person" abstract="true">
    	 	<property name="lastName" value="鑫鑫"></property>
    	 	<property name="age" value="14"></property>
    	 	<property name="gender" value="女"></property>
    	 	<property name="email" value="8512@qq.com"></property>
    	 </bean>
    	 
    	 
    	 
    	 <bean id="person06" class="com.guigu.bean.Person" parent="person05">
    	 	<property name="lastName" value="悦悦"></property>
    	 </bean>
    	 
    	 
    	 
    	 
    	 <bean id="person07" class="com.guigu.bean.Person"></bean>
    	 <bean id="car07" class="com.guigu.bean.Car" depends-on="person07,book07"></bean>
    	 <bean id="book07" class="com.guigu.bean.Book"></bean>
    	 
    	 
    	 
    	 <bean id="book08" class="com.guigu.bean.Book" scope="prototype"></bean>
    	
    </beans>

IOCTest.java ：

package com.guigu.test;
    
    import static org.junit.Assert.*;
    
    import java.util.List;
    import java.util.Map;
    
    import org.junit.Test;
    import org.springframework.context.ApplicationContext;
    import org.springframework.context.support.ClassPathXmlApplicationContext;
    
    import com.guigu.bean.Book;
    import com.guigu.bean.Car;
    import com.guigu.bean.Person;
    
    public class IOCTest { 
    
    	private ApplicationContext ioc2=new ClassPathXmlApplicationContext("ioc2.xml");
    	
    	@Test
    	public void test05(){ 
    		Person person06=(Person) ioc2.getBean("person06");
    		System.out.println(person06);		
    		
    		Object bean=ioc2.getBean("book08");
    		Object bean2=ioc2.getBean("book08");
    		System.out.println(bean==bean2);
    	}
    	
    	@Test
    	public void test04(){ 
    		Person person03=(Person) ioc2.getBean("person03");
    		Map<String,Object>maps=person03.getMaps();
    		System.out.println(maps);
    		
    		Map<String,Object> bean=(Map<String,Object>)ioc2.getBean("myMap");
    		System.out.println(bean.getClass());
    		
    		/** * 级联属性可以修改属性的属性，注意：原来的bean的值可能会被修改 * */
    		Person person04=(Person) ioc2.getBean("person04");
    		Object car=ioc2.getBean("car01");
    		System.out.println("容器中的car："+car);
    		System.out.println("Person中的car:"+person04.getCar());
    	}
    	
    	/** * 实验4：正确的为各种属性赋值 * 测试使用null值、默认引用类型就是null，基本类型是默认值 * */
    	@Test
    	public void test03(){ 
    		Person bean=(Person) ioc2.getBean("person01");
    		System.out.println(bean.getLastName()==null);
    		System.out.println(bean.getCar());
    		
    		Car car=bean.getCar();
    		Object bean2=ioc2.getBean("car01");
    		System.out.println(bean2==car);
    	
    		Person bean3=(Person) ioc2.getBean("person02");
    		List<Book>books=bean3.getBooks();
    		System.out.println(books);
    		System.out.println("======================");
    		
    		Map<String,Object> maps=bean3.getMaps();
    		System.out.println(maps);
    		System.out.println("======================");
    		System.out.println(bean3.getProperties());
    	}
    }