代码
Student
package org.example.pojo;
import java.util.*;
public class Student {
private String name;
private Address address;
private String[] books;
private List<String> hobbies;
private Map<String, String> card;
private Set<String> games;
private Properties info;
private String wife;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Address getAddress() {
return address;
}
public void setAddress(Address address) {
this.address = address;
}
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> getCard() {
return card;
}
public void setCard(Map<String, String> card) {
this.card = card;
}
public Set<String> getGames() {
return games;
}
public void setGames(Set<String> games) {
this.games = games;
}
public Properties getInfo() {
return info;
}
public void setInfo(Properties info) {
this.info = info;
}
public String getWife() {
return wife;
}
public void setWife(String wife) {
this.wife = wife;
}
@Override
public String toString() {
return "Student{" +
"name='" + name + '\'' +
", address=" + address.toString() +
", books=" + Arrays.toString(books) +
", hobbies=" + hobbies +
", card=" + card +
", games=" + games +
", info=" + info +
", wife='" + wife + '\'' +
'}';
}
}
Address
package org.example.pojo;
public class Address {
private String address;
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
@Override
public String toString() {
return "Address{" +
"address='" + address + '\'' +
'}';
}
}
User
package org.example.pojo;
public class User {
private String name;
private int 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 "User{" +
"name='" + name + '\'' +
", age=" + age +
'}';
}
}
Teacher
package org.example.pojo;
public class Teacher {
private String name;
private int age;
public Teacher(String name, int age) {
this.name = name;
this.age = age;
}
@Override
public String toString() {
return "Teacher{" +
"name='" + name + '\'' +
", age=" + age +
'}';
}
}
teacherBeans.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:c="http://www.springframework.org/schema/c"
xsi:schemaLocation="http://www.springframework.org/schema/beans
https://www.springframework.org/schema/beans/spring-beans.xsd">
<!-- c 命名空间注入,通过构造器注入 construct-args-->
<bean id="teacher" class="org.example.pojo.Teacher" c:name="名字" c:age="30"/>
</beans>
userBeans.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"
xsi:schemaLocation="http://www.springframework.org/schema/beans
https://www.springframework.org/schema/beans/spring-beans.xsd">
<!-- p 命名空间注入,可以直接注入属性值 property-->
<bean id="user" class="org.example.pojo.User" p:name="名字" p:age="18"/>
</beans>
beans.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"
xsi:schemaLocation="http://www.springframework.org/schema/beans
https://www.springframework.org/schema/beans/spring-beans.xsd">
<bean id="address" class="org.example.pojo.Address">
<property name="address" value="美国"/>
</bean>
<bean id="student" class="org.example.pojo.Student">
<!-- 第一种:普通值注入,value-->
<property name="name" value="测试名称"/>
<!-- 第二种:bean注入,ref-->
<property name="address" ref="address"/>
<!-- 第三种:数组注入,ref-->
<property name="books">
<array>
<value>《水浒传》</value>
<value>《西游记》</value>
<value>《红楼梦》</value>
<value>《三国演义》</value>
</array>
</property>
<!-- 第四种:List注入-->
<property name="hobbies">
<list>
<value>打游戏</value>
<value>看电影</value>
</list>
</property>
<!-- 第五种:Map注入-->
<property name="card">
<map>
<entry key="身份证" value="5555523369774"/>
<entry key="银行卡" value="5568823369774"/>
</map>
</property>
<!-- 第六种:Set注入-->
<property name="games">
<set>
<value>overWatch</value>
<value>crossFire</value>
</set>
</property>
<!-- 第七种:null 注入-->
<property name="wife">
<null></null>
</property>
<!-- 第八种:Properties 注入-->
<property name="info">
<props>
<prop key="学号">1354</prop>
<prop key="性别">男</prop>
</props>
</property>
</bean>
</beans>
MyTest
import org.example.pojo.Student;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class MyTest {
public static void main(String[] args) {
ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
Student student = (Student) context.getBean("student");
System.out.println(student.toString());
/*
Student {
name='测试名称',
address=Address{address='美国'},
books=[《水浒传》, 《西游记》, 《红楼梦》, 《三国演义》],
hobbies=[打游戏, 看电影],
card={身份证=5555523369774, 银行卡=5568823369774},
games=[overWatch, crossFire],
info={学号=1354, 性别=男},
wife='null'
}
*/
}
@Test
public void uesrTest() {
ApplicationContext context = new ClassPathXmlApplicationContext("userBeans.xml");
User user = (User) context.getBean("user");
System.out.println(user.toString());
}
@Test
public void teacherTest(){
ApplicationContext context = new ClassPathXmlApplicationContext("teacherBeans.xml");
Teacher teacher = (Teacher) context.getBean("teacher");
System.out.println(teacher.toString());
}
}
注意点
p命名空间和c命名空间不能直接使用需要导入约束。
- p
xmlns:p="http://www.springframework.org/schema/p"
- c
xmlns:c="http://www.springframework.org/schema/c"