Spring学习-02day【bean配置+依赖注入的方式】
作者：互联网
地址类
1 package com.sen.pojo;
2
3 public class Address {
4 //作为一个引用对象
5 private String address;
6
7 public String getAddress() {
8 return address;
9 }
10
11 public void setAddress(String address) {
12 this.address = address;
13 }
14 }
学生类
1 package com.sen.pojo;
2
3 import java.util.*;
4
5 public class Student {
6 //复杂类型的注入
7 private String name;
8 private Address address;
9 private String[]books;
10 private List<String>hobbys;
11 private Map<String,String>card;
12 private Set<String>games;
13 private String wife;//空指针
14 private Properties info;
15
16 public String getName() {
17 return name;
18 }
19
20 public void setName(String name) {
21 this.name = name;
22 }
23
24 public Address getAddress() {
25 return address;
26 }
27
28 public void setAddress(Address address) {
29 this.address = address;
30 }
31
32 public String[] getBooks() {
33 return books;
34 }
35
36 public void setBooks(String[] books) {
37 this.books = books;
38 }
39
40 public List<String> getHobbys() {
41 return hobbys;
42 }
43
44 public void setHobbys(List<String> hobbys) {
45 this.hobbys = hobbys;
46 }
47
48 public Map<String, String> getCard() {
49 return card;
50 }
51
52 public void setCard(Map<String, String> card) {
53 this.card = card;
54 }
55
56 public Set<String> getGames() {
57 return games;
58 }
59
60 public void setGames(Set<String> games) {
61 this.games = games;
62 }
63
64 public String getWife() {
65 return wife;
66 }
67
68 public void setWife(String wife) {
69 this.wife = wife;
70 }
71
72 public Properties getInfo() {
73 return info;
74 }
75
76 public void setInfo(Properties info) {
77 this.info = info;
78 }
79
80 @Override
81 public String toString() {
82 return "Student{" +
83 "name='" + name + '\'' +
84 ", address=" + address +
85 ", books=" + Arrays.toString(books) +
86 ", hobbys=" + hobbys +
87 ", card=" + card +
88 ", games=" + games +
89 ", wife='" + wife + '\'' +
90 ", info=" + info +
91 '}';
92 }
93 }
(一个空空荡荡的小beans~
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 http://www.springframework.org/schema/beans/spring-beans.xsd"> 6 7 8 </beans>
在bean.xml 中尝试练习各种类型的注入
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 http://www.springframework.org/schema/beans/spring-beans.xsd"> 6 7 <bean id="address" class="com.sen.pojo.Address"> 8 <property name="address" value="河南"></property> 9 </bean> 10 11 <bean id="student" class="com.sen.pojo.Student"> 12 <!--普通注入：直接使用value --> 13 <property name="name" value="夜风"/> 14 <!--bean注入：使用ref --> 15 <property name="address" ref="address"/> 16 <!--数组注入：--> 17 <property name="books"> 18 <array> 19 <value>红楼梦</value> 20 <value>西游记</value> 21 <value>水浒传</value> 22 <value>三国演义</value> 23 </array> 24 </property> 25 26 <!--List集合注入--> 27 <property name="hobbys"> 28 <list> 29 <value>打王者</value> 30 <value>听歌</value> 31 <value>看电影</value> 32 </list> 33 </property> 34 35 <!--Map集合注入：--> 36 <property name="card"> 37 <map> 38 <entry key="身份证" value="411481199711185413"></entry> 39 <entry key="银行卡" value="834672384732487347"></entry> 40 </map> 41 </property> 42 43 <!--Set集合注入：--> 44 <property name="games"> 45 <set> 46 <value>LOL</value> 47 <value>COCO</value> 48 <value>JOJO</value> 49 </set> 50 </property> 51 52 <!--null空值注入：--> 53 <property name="wife"> 54 <null></null> 55 </property> 56 57 <!--properties注入：--> 58 <property name="info"> 59 <props> 60 <prop key="学号">202105520034</prop> 61 <prop key="性别">男</prop> 62 <prop key="家乡">合肥</prop> 63 64 </props> 65 </property> 66 67 </bean> 68 </beans>
最后的结果
标签：return,String,Spring,void,private,bean,02day,address,public 来源： https://www.cnblogs.com/verrzert/p/15861632.html