Spring依赖注入多种类型数据的示例代码

package entity;

import java.util.*;

/**

  * @author LeDao

  * @company

  * @create 2022-02-13 21:26

  */

public class Student {

     private int id;

     private String name;

     private StudentClass studentClass;

     private String[] books;

     private List<String> hobbies;

     private Map<String, String> cards;

     private Set<String> games;

     private String wife;

     private Properties info;

     public int getId() {

         return id;

     }

     public void setId( int id) {

         this .id = id;

     public String getName() {

         return name;

     public void setName(String name) {

         this .name = name;

     public StudentClass getStudentClass() {

         return studentClass;

     public void setStudentClass(StudentClass studentClass) {

         this .studentClass = studentClass;

     public String[] getBooks() {

         return books;

     public void setBooks(String[] books) {

         this .books = books;

     public List<String> getHobbies() {

         return hobbies;

     public void setHobbies(List<String> hobbies) {

         this .hobbies = hobbies;

     public Map<String, String> getCards() {

         return cards;

     public void setCards(Map<String, String> cards) {

         this .cards = cards;

     public Set<String> getGames() {

         return games;

     public void setGames(Set<String> games) {

         this .games = games;

     public String getWife() {

         return wife;

     public void setWife(String wife) {

         this .wife = wife;

     public Properties getInfo() {

         return info;

     public void setInfo(Properties info) {

         this .info = info;

     @Override

     public String toString() {

         return "Student{" +

                 "id=" + id +

                 ", name='" + name + '\ '' +

                 ", studentClass=" + studentClass +

                 ", books=" + Arrays.toString(books) +

                 ", hobbies=" + hobbies +

                 ", cards=" + cards +

                 ", games=" + games +

                 ", wife='" + wife + '\ '' +

                 ", info=" + info +

                 '}' ;

}

package entity;

/**

  * @author LeDao

  * @company

  * @create 2022-02-14 14:11

  */

public class StudentClass {

     private int id;

     private String name;

     public int getId() {

         return id;

     }

     public void setId( int id) {

         this .id = id;

     }

     public String getName() {

         return name;

     }

     public void setName(String name) {

         this .name = name;

     }

     @Override

     public String toString() {

         return "Class{" +

                 "id=" + id +

                 ", name='" + name + '\ '' +

                 '}' ;

     }

}

<?xml version= "1.0" encoding= "UTF-8" ?>

<beans xmlns= "http://HdhCmsTestspringframework.org/schema/beans"

        xmlns:xsi= "http://HdhCmsTestw3.org/2001/XMLSchema-instance"

        xsi:schemaLocation= "http://HdhCmsTestspringframework.org/schema/beans http://HdhCmsTestspringframework.org/schema/beans/spring-beans.xsd" >

     <bean id= "studentClass1" class = "entity.StudentClass" >

         <property name= "id" value= "1" />

         <property name= "name" value= "软件工程3班" />

     </bean>

     <bean id= "user1" class = "entity.Student" >

         <!--一般类型-->

         <property name= "id" value= "1" />

         <property name= "name" value= "tom" />

         <!--对象-->

         <property name= "studentClass" ref= "studentClass1" />

         <!--数组-->

         <property name= "books" >

             <array>

                 <value>Java编程思想</value>

                 <value>MySQL必知必会</value>

                 <value>平凡的世界</value>

             </array>

         </property>

         <!--List-->

         <property name= "hobbies" >

             <list>

                 <value>唱</value>

                 <value>跳</value>

                 <value>rap</value>

                 <value>打篮球</value>

             </list>

         </property>

         <!--Map-->

         <property name= "cards" >

             <map>

                 <entry key= "身份证" value= "123" />

                 <entry key= "校园卡" value= "321" />

             </map>

         </property>

         <!--Set-->

         <property name= "games" >

             <set>

                 <value>LOL</value>

                 <value>DNF</value>

                 <value>COC</value>

             </set>

         </property>

         <!--空值-->

         <property name= "wife" >

             < null />

         </property>

         <!--Properties-->

         <property name= "info" >

             <props>

                 <prop key= "userName" >root</prop>

                 <prop key= "password" > 123456 </prop>

             </props>

         </property>

     </bean>

</beans>

import config.MyConfig;

import entity.Student;

import org.springframework.context.ApplicationContext;

import org.springframework.context.annotation.AnnotationConfigApplicationContext;

import org.springframework.context.support.ClassPathXmlApplicationContext;

/**

  * @author LeDao

  * @company

  * @create 2022-02-12 15:56

  */

public class MyTest {

     public static void main(String[] args) {

         ApplicationContext context= new ClassPathXmlApplicationContext( "beans.xml" );

         Student student = (Student) context.getBean( "user1" );

         System.out.println(student);

     }

}