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Spring依赖注入之set注入（各类型注入方式）

peng-1234 2020-05-30 09:59 原文



Student（学生类）




1 package com.kuang.pojo;
 2 
 3 import java.util.*;
 4 
 5 public class Student {
 6     private String name;
 7     private Address address;
 8     private String[] books;
 9     private List<String> hobbys;
10     private Map<String,String> card;
11     private Set<String> games;
12     private String wife;
13     private Properties info;
14 
15     public String getName() {
16         return name;
17     }
18 
19     public void setName(String name) {
20         this.name = name;
21     }
22 
23     public Address getAddress() {
24         return address;
25     }
26 
27     public void setAddress(Address address) {
28         this.address = address;
29     }
30 
31     public String[] getBooks() {
32         return books;
33     }
34 
35     public void setBooks(String[] books) {
36         this.books = books;
37     }
38 
39     public List<String> getHobbys() {
40         return hobbys;
41     }
42 
43     public void setHobbys(List<String> hobbys) {
44         this.hobbys = hobbys;
45     }
46 
47     public Map<String, String> getCard() {
48         return card;
49     }
50 
51     public void setCard(Map<String, String> card) {
52         this.card = card;
53     }
54 
55     public Set<String> getGames() {
56         return games;
57     }
58 
59     public void setGames(Set<String> games) {
60         this.games = games;
61     }
62 
63     public String getWife() {
64         return wife;
65     }
66 
67     public void setWife(String wife) {
68         this.wife = wife;
69     }
70 
71     public Properties getInfo() {
72         return info;
73     }
74 
75     public void setInfo(Properties info) {
76         this.info = info;
77     }
78 
79     @Override
80     public String toString() {
81         return "Student{" +
82                 "name='" + name + '\'' +
83                 ", address=" + address +
84                 ", books=" + Arrays.toString(books) +
85                 ", hobbys=" + hobbys +
86                 ", card=" + card +
87                 ", games=" + games +
88                 ", wife='" + wife + '\'' +
89                 ", info=" + info +
90                 '}';
91     }
92 }








Address(地址类)




 1 package com.kuang.pojo;
 2 
 3 public class Address {
 4     private String address;
 5 
 6     public String getAddress() {
 7         return address;
 8     }
 9 
10     public void setAddress(String address) {
11         this.address = address;
12     }
13 
14     @Override
15     public String toString() {
16         return "Address{" +
17                 "address='" + address + '\'' +
18                 '}';
19     }
20 }








beans.xml




1 <?xml version="1.0" encoding="UTF-8"?>
 2 <beans xmlns="http://www.springframework.org/schema/beans"
 3        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 4        xsi:schemaLocation="http://www.springframework.org/schema/beans
 5         https://www.springframework.org/schema/beans/spring-beans.xsd">
 6 <!-- set注入 -->
 7     <bean id="address" class="com.kuang.pojo.Address">
 8         <property name="address" value="火之国：木叶村"/>
 9     </bean>
10 
11     <bean id="student" class="com.kuang.pojo.Student">
12         <!--第一种：普通值注入，value-->
13         <property name="name" value="漩涡鸣人"/>
14         <!--第二种：Bean注入，ref-->
15         <property name="address" ref="address"/>
16         <!--数组注入-->
17         <property name="books">
18             <array>
19                 <value>海贼王</value>
20                 <value>小叮当</value>
21                 <value>君的名字</value>
22                 <value>火影忍者</value>
23             </array>
24         </property>
25         <!--list注入-->
26         <property name="hobbys">
27             <list>
28                 <value>写bug</value>
29                 <value>找bug</value>
30                 <value>改bug</value>
31             </list>
32         </property>
33         <!--Map-->
34         <property name="card">
35             <map>
36                 <entry key="身份证" value="木叶村：七代目"/>
37                 <entry key="银行卡" value="木叶村：自己脑补"/>
38             </map>
39         </property>
40         <!--Set-->
41         <property name="games">
42             <set>
43                 <value>wzry</value>
44                 <value>cjzc</value>
45                 <value>mrzh</value>
46             </set>
47         </property>
48         <!-- null -->
49         <property name="wife">
50             <null/>
51         </property>
52         <!-- Properties -->
53         <property name="info">
54             <props>
55                 <prop key="username">那累都</prop>
56                 <prop key="password">1234</prop>
57                 <prop key="sex">man</prop>
58                 <prop key="driver">77</prop>
59             </props>
60         </property>
61 
62 
63     </bean>
64 
65 </beans>






MyTest(测试类)




 1 import com.kuang.pojo.Student;
 2 import org.springframework.context.ApplicationContext;
 3 import org.springframework.context.support.ClassPathXmlApplicationContext;
 4 
 5 public class MyTest {
 6     public static void main(String[] args) {
 7         ApplicationContext context = new ClassPathXmlApplicationContext("beans.xml");
 8         Student student = (Student)context.getBean("student");
 9         System.out.println(student.toString());
10 
11         /*
12         Student{name='漩涡鸣人',
13           address=Address{address='火之国：木叶村'},
14           books=[海贼王, 小叮当, 君的名字, 火影忍者],
15           hobbys=[写bug, 找bug, 改bug],
16           card={身份证=木叶村：七代目, 银行卡=木叶村：自己脑补},
17           games=[wzry, cjzc, mrzh],
18           wife='null',
19           info={password=1234, sex=man, driver=77, username=那累都}}
20          */
21     }
22 }




 







	

		


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