Java框架--IOC javabean注入(List/Map/Set/Properties/Array/Date)

女爷i 2022-07-14 14:56 128阅读 0赞

基础类Teacher/Student

package com.ioc;
    
    import java.util.Date;
    import java.util.HashMap;
    import java.util.List;
    import java.util.Properties;
    import java.util.Set;
    
    public class Teacher {
    	
    	//byte short int long float double char boolean
    	private String name;
    	private Integer age;
    	private List<Student> students;
    	private Set<String> jobs;
    	private List<Float> scores;
    	private String[] names;
    	private HashMap<String, Object> map;
    	private List<HashMap<String, Object>> maps;
    	private Properties emails;
    	private Date ctime;
    	
    	
    	public Teacher(){
    		System.out.println("teacher构造函数....");
    	}
    	
    
    	public String[] getNames() {
    		return names;
    	}
    
    	public void setNames(String[] names) {
    		this.names = names;
    	}
    
    	public List<HashMap<String, Object>> getMaps() {
    		return maps;
    	}
    
    	public void setMaps(List<HashMap<String, Object>> maps) {
    		this.maps = maps;
    	}
    
    	public HashMap<String, Object> getMap() {
    		return map;
    	}
    
    	public void setMap(HashMap<String, Object> map) {
    		this.map = map;
    	}
    	
    	public Set<String> getJobs() {
    		return jobs;
    	}
    
    	public void setJobs(Set<String> jobs) {
    		this.jobs = jobs;
    	}
    
    	public Properties getEmails() {
    		return emails;
    	}
    
    	public void setEmails(Properties emails) {
    		this.emails = emails;
    	}
    	
    	public Date getCtime() {
    		return ctime;
    	}
    
    	public void setCtime(Date ctime) {
    		this.ctime = ctime;
    	}
    
    	public List<Float> getScores() {
    		return scores;
    	}
    
    	public void setScores(List<Float> scores) {
    		this.scores = scores;
    	}
    
    	public String getName() {
    		return name;
    	}
    
    	public void setName(String name) {
    		this.name = name;
    	}
    
    	public Integer getAge() {
    		return age;
    	}
    
    	public void setAge(Integer age) {
    		this.age = age;
    	}
    
    	public List<Student> getStudents() {
    		return students;
    	}
    
    	public void setStudents(List<Student> students) {
    		this.students = students;
    	}
    
    }

package com.ioc;
    
    public class Student {
    
    	private String name;
    	private Integer classNo;
    	private int age;
    	private Float score;
    	private Teacher teacher;
    
    	public Student() {
    		super();
    	}
    
    	public Student(String name, int age, Float score) {
    		super();
    		this.name = name;
    		this.age = age;
    		this.score = score;
    	}
    
    	public Student(String name, Integer classNo, int age, Float score, Teacher teacher) {
    		super();
    		this.name = name;
    		this.classNo = classNo;
    		this.age = age;
    		this.score = score;
    		this.teacher = teacher;
    	}
    
    	public String getName() {
    		return name;
    	}
    
    	public void setName(String name) {
    		this.name = name;
    	}
    
    	public Integer getClassNo() {
    		return classNo;
    	}
    
    	public void setClassNo(Integer classNo) {
    		this.classNo = classNo;
    	}
    
    	public int getAge() {
    		return age;
    	}
    
    	public void setAge(int age) {
    		this.age = age;
    	}
    
    	public Float getScore() {
    		return score;
    	}
    
    	public void setScore(Float score) {
    		this.score = score;
    	}
    
    	public Teacher getTeacher() {
    		return teacher;
    	}
    
    	public void setTeacher(Teacher teacher) {
    		this.teacher = teacher;
    	}
    
    }

bean.xml配置文件

<?xml version="1.0" encoding="UTF-8"?>
    <beans 
    	xmlns="http://www.springframework.org/schema/beans"
    	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    	xmlns:context="http://www.springframework.org/schema/context"
    	xmlns:aop="http://www.springframework.org/schema/aop"
    	xmlns:p="http://www.springframework.org/schema/p"
    	xsi:schemaLocation="http://www.springframework.org/schema/beans   
     	http://www.springframework.org/schema/beans/spring-beans.xsd  
      	http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop-4.1.xsd
      	http://www.springframework.org/schema/context   
     	http://www.springframework.org/schema/context/spring-context-4.0.xsd">
    	
    	
    	 
    	 <bean id="teacher" class="com.ioc.Teacher">
    	 	<property name="name" value="fyl1"></property>
    	 	<property name="age" value="30"></property>
    	 	<property name="students" >
    	 		<list>
    	 			<ref bean="stu1"/>
    	 			<ref bean="stu2"/>
    	 		</list>
    	 	</property>
    	 </bean>
    	 
    	 <bean id="stu1" class="com.ioc.Student" 
    	 		p:name="stu1"
    	 		p:score="98"
    	 		p:teacher-ref="teacher">
    	 </bean>
    	 <bean id="stu2" class="com.ioc.Student">
    	 	<property name="name" value="stu2"></property>
    	 	<property name="score" value="88.2"></property>
    	 	<property name="teacher" ref="teacher"></property>
    	 </bean>
     	
     	
     	<bean id="dateFormat" class="java.text.SimpleDateFormat">
    	        <constructor-arg value="yyyy-MM-dd HH:mm:ss" />
    	</bean>
     	
     	
     	<bean id="stuConstructor" class="com.ioc.Student">
     		<constructor-arg index="0" type="java.lang.String" value="fyl-Constructor"></constructor-arg>
     		<constructor-arg index="1" type="int" value="12"></constructor-arg>
     		<constructor-arg index="2" type="java.lang.Float" value="77.2f"></constructor-arg>
     	</bean>
     	
     	
     	<bean id="teacherM" class="com.ioc.Teacher" p:name="fylM">
     		<property name="age" value="20"></property>
     		
     		<property name="students">
     			<list>
     				<ref bean="stu1"/>
     				<ref bean="stu2"/>
     			</list>
     		</property>
     		
     		<property name="jobs">
     			<set>
     				<value>语文老师</value>
     				<value>语文老师</value>
     				<value>英语老师</value>
     			</set>
     		</property>
     		<property name="scores">
     			<list>
     				<value>34</value>
     				<value>45.78</value>
     				<value>34.234</value>
     			</list>
     		</property>
     		
     		<property name="names">
     			<array>
     				<value>小A</value>
     				<value>小B</value>
     			</array>
     		</property>
     		
     		<property name="map">
     			<map>
     				<entry>
     					<key><value>username</value></key>
     					<value>fylMap</value>
     				</entry>
     				<entry>
     					<key><value>age</value></key>
     					<value>22</value>
     				</entry>
     			</map>
     		</property>
     		
     		<property name="maps">
     			<list>
     				<map>
    	 				<entry>
    	 					<key><value>username</value></key>
    	 					<value>fylListMap</value>
    	 				</entry>
    	 				<entry>
    	 					<key><value>age</value></key>
    	 					<value>32</value>
    	 				</entry>
    	 			</map>
    	 			 <map>
    	 				<entry>
    	 					<key><value>username</value></key>
    	 					<value>mm</value>
    	 				</entry>
    	 				<entry>
    	 					<key><value>age</value></key>
    	 					<value>17</value>
    	 				</entry>
    	 			</map>
     			</list>
     		</property>
     		
     		<property name="emails">
     			<props>
     				<prop key="Aemail">123.qq.com</prop>
     				<prop key="Bemail">456.qq.com</prop>
     			</props>
     		</property>
     			
     		<property name="ctime">  
    	         <bean factory-bean="dateFormat" factory-method="parse">  
    	            <constructor-arg value="2016-12-14 11:00:12" />  
    	         </bean>  
            </property>  
     	</bean>
     	
    </beans>

测试类

package com.test;
    
    import java.util.ArrayList;
    import java.util.HashMap;
    import java.util.List;
    import java.util.Map;
    import java.util.Properties;
    
    import org.springframework.context.ApplicationContext;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.support.ClassPathXmlApplicationContext;
    
    import com.ioc.Student;
    import com.ioc.Teacher;
    
    
    
    public class Test {
    
    	
    
    	public static void main(String[] args) {
    		//Teacher与Student 建立联系
    //		Teacher teacher = new Teacher();
    //		teacher.setName("fyl");
    //		teacher.setAge(11);
    //		teacher.setStudents(null);
    //		
    //		Student student1 = new Student();
    //		student1.setName("学生一");
    //		student1.setTeacher(teacher); //绑定师生关系
    //		Student student2 = new Student();
    //		student2.setName("学生一");
    //		student2.setTeacher(teacher); //绑定师生关系
    //		
    //		List<Student> listStu = new ArrayList<>();
    //		listStu.add(student1);
    //		listStu.add(student2);
    //		teacher.setStudents(listStu);
    //		
    //		for (Student student : teacher.getStudents()) {
    //			System.out.println(teacher.getName()+" 有学生： "+student.getName());
    //		}
    		
    		//IOC bean注入 加载时即初始化类
    		ApplicationContext context = new ClassPathXmlApplicationContext("classpath:bean.xml");
    //		Teacher teacher = (Teacher) context.getBean("teacher");
    //		for (Student student : teacher.getStudents()) {
    //		System.out.println(teacher.getName()+" 的年龄是："+teacher.getAge()+" 有学生： "+student.getName()+" 分数："+student.getScore());
    //		}
    //		
    //		Student student = (Student) context.getBean("stu1");
    //		System.out.println(student.getName()+" 的老师是： "+student.getTeacher().getName());
    		
    //		Student stuConstructor = (Student) context.getBean("stuConstructor");
    //		System.out.println(stuConstructor.getName()+"====>"+stuConstructor.getScore());
    	
    		Teacher teacherM = (Teacher) context.getBean("teacherM");
    		System.out.println(teacherM.getName()+"==>"+teacherM.getAge());
    		
    		for (int i = 0; i < teacherM.getStudents().size(); i++) {
    			System.out.println("学生："+teacherM.getStudents().get(i).getName()+"==>"+teacherM.getStudents().get(i).getScore());
    		}
    
    		for (String job:teacherM.getJobs()){
    			System.out.println(job);
    		}
    		
    		for (Float score:teacherM.getScores()){
    			System.out.println(score);
    		}
    		
    		for (int i = 0; i < teacherM.getNames().length; i++) {
    			System.out.println(teacherM.getNames()[i]);
    		}
    		
    		for (Map.Entry<String, Object> map : teacherM.getMap().entrySet()) {
    			System.out.println(map);
    			System.out.println(map.getKey()+"<==>"+map.getValue()+"<==>"+teacherM.getMap().get(map.getKey()));
    		}
    		
    		List<HashMap<String, Object>> listMap = teacherM.getMaps();
    		for (HashMap<String, Object> hashMap : listMap) {
    			for (Map.Entry<String, Object> hmap:hashMap.entrySet()) {
    				System.out.println(hmap.getKey()+"<==>"+hmap.getValue());
    			}
    		}
    		
    		Properties properties = teacherM.getEmails();
    		System.out.println(properties.getProperty("Aemail"));
    		System.out.println(properties.getProperty("Bemail"));
    		
    		System.out.println(teacherM.getCtime());
    	}
    }

运行 结果：

十二月 14, 2016 10:59:10 上午 org.springframework.context.support.ClassPathXmlApplicationContext prepareRefresh
    信息: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@579bb367: startup date [Wed Dec 14 10:59:10 CST 2016]; root of context hierarchy
    十二月 14, 2016 10:59:10 上午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
    信息: Loading XML bean definitions from class path resource [bean.xml]
    teacher构造函数....  //加载bean.xml时，初始化的类
    teacher构造函数....
    fylM==>20
    学生：stu1==>98.0
    学生：stu2==>88.2
    语文老师
    英语老师
    34.0
    45.78
    34.234
    小A
    小B
    username=fylMap
    username<==>fylMap<==>fylMap
    age=22
    age<==>22<==>22
    username<==>fylListMap
    age<==>32
    username<==>mm
    age<==>17
    123.qq.com
    456.qq.com
    Wed Dec 14 11:00:12 CST 2016