Spring框架的IOC注入：
一、Java部分代码：
Person实体类：
1 package com.ioc;
2
3 import java.util.List;
4 import java.util.Map;
5 import java.util.Properties;
6 import java.util.Set;
7
8 import com.adviceAop.Dancer;
9 import com.aop.Singer;
10
11 /**
12 * Spring 各种类型的注入。
13 * @Person.java
14 * @author BlueLake
15 * @2017-9-12 下午2:11:02
16 */
17 public class Person {
18
19 //普通类型：字符串类型
20 private String pname;
21 //普通类型：字符串类型
22 private int age;
23 //集合类型：list
24 private List<String> loves;
25 //集合类型：Set
26 private Set<String> books;
27 //集合类型：Map
28 private Map<String,String> heros;
29 //集合类型：Properties
30 private Properties palaces;
31 //引用类型
32 private Singer singer;
33 private Dancer dancer;
34
35 private Emp emp ;
36
37 //addr不加get、set方法，使用构造器注入。
38 private String addr;
39
40
41
42 /**
43 * 无参数构造
44 */
45 public Person() {
46 super();
47 }
48
49 /**
50 * 参数构造。
51 * @param addr
52 */
53 public Person(String addr) {
54 this.addr = addr;
55 }
56
57
58 public String getPname() {
59 return pname;
60 }
61 public void setPname(String pname) {
62 this.pname = pname;
63 }
64 public int getAge() {
65 return age;
66 }
67 public void setAge(int age) {
68 this.age = age;
69 }
70 public List<String> getLoves() {
71 return loves;
72 }
73 public void setLoves(List<String> loves) {
74 this.loves = loves;
75 }
76 public Set<String> getBooks() {
77 return books;
78 }
79 public void setBooks(Set<String> books) {
80 this.books = books;
81 }
82
83 public Map<String, String> getHeros() {
84 return heros;
85 }
86
87 public void setHeros(Map<String, String> heros) {
88 this.heros = heros;
89 }
90
91 public Properties getPalaces() {
92 return palaces;
93 }
94
95 public void setPalaces(Properties palaces) {
96 this.palaces = palaces;
97 }
98
99 public Singer getSinger() {
100 return singer;
101 }
102 public void setSinger(Singer singer) {
103 this.singer = singer;
104 }
105 public Dancer getDancer() {
106 return dancer;
107 }
108
109 public void setDancer(Dancer dancer) {
110 this.dancer = dancer;
111 }
112 public Emp getEmp() {
113 return emp;
114 }
115
116 public void setEmp(Emp emp) {
117 this.emp = emp;
118 }
119
120 @Override
121 public String toString() {
122 return "Person [pname=" + pname + ", age=" + age + ", loves=" + loves
123 + ", books=" + books + ", heros=" + heros + ", palaces="
124 + palaces + ", singer=" + singer + ", dancer=" + dancer
125 + ", emp=" + emp + ", addr=" + addr + "]";
126 }
127 }
Emp实体类：
1 package com.ioc;
2
3 import com.aop.Singer;
4 /**
5 * 员工类。
6 * @Emp.java
7 * @author BlueLake
8 * @2017-9-12 下午7:27:33
9 */
10 public class Emp {
11
12 private String ename;
13 private int age ;
14 private Singer singer;
15
16 public String getEname() {
17 return ename;
18 }
19 public void setEname(String ename) {
20 this.ename = ename;
21 }
22 public int getAge() {
23 return age;
24 }
25 public void setAge(int age) {
26 this.age = age;
27 }
28 public Singer getSinger() {
29 return singer;
30 }
31 public void setSinger(Singer singer) {
32 this.singer = singer;
33 }
34
35 }
唱歌类：
1 package com.aop;
2 /**
3 * 唱歌类
4 * @Singer.java
5 * @author BlueLake
6 * @2017-9-12 下午7:28:53
7 */
8 public class Singer {
9
10 public void sing(){
11 System.out.println("玖月奇迹--你若盛开~~~");
12 }
13 }
跳舞类：
1 package com.adviceAop;
2 /**
3 * 跳舞类
4 * @Dancer.java
5 * @author BlueLake
6 * @2017-9-12 下午7:29:14
7 */
8 public class Dancer {
9
10 public void dance(String name){
11 System.out.println("杨丽萍来跳孔雀舞~~~"+name);
12 // throw new RuntimeException("受伤了吗?");
13 }
14 }
二、配置applicationContext.xml
1 <?xml version="1.0" encoding="UTF-8"?> 2 <beans 3 xmlns="http://www.springframework.org/schema/beans" 4 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 5 xmlns:p="http://www.springframework.org/schema/p" 6 xmlns:aop="http://www.springframework.org/schema/aop" 7 xsi:schemaLocation="http://www.springframework.org/schema/beans 8 http://www.springframework.org/schema/beans/spring-beans-3.1.xsd 9 http://www.springframework.org/schema/aop 10 http://www.springframework.org/schema/aop/spring-aop-3.1.xsd"> 11 12 <!-- spring基本注入 ，property的name名称要和类里的名称一致。 --> 13 <bean id="person" class="com.ioc.Person" autowire="byName"> 14 <!-- 1.构造器注入， 使用constructor-arg标签，必须有这个构造方法 --> 15 <constructor-arg name="addr"> 16 <value>祖籍钱塘</value> 17 </constructor-arg> 18 <!-- 2.set 方法注入 使用 property 标签--> 19 <property name="pname"> <value>项羽</value> </property> 20 <property name="age" value="27"> </property> 21 <property name="loves"> 22 <list> 23 <value>塞外骑马</value> 24 <value>江南采莲</value> 25 <value>剪烛西窗</value> 26 </list> 27 </property> 28 <property name="books"> 29 <set> 30 <value>小窗幽记</value> 31 <value>围炉夜话</value> 32 <value>菜根谭</value> 33 </set> 34 </property> 35 <property name="heros"> 36 <map> 37 <entry> 38 <key> <value>曹操</value> </key> 39 <value>北魏</value> 40 </entry> 41 <entry> 42 <key> <value>赵云</value> </key> 43 <value>西蜀</value> 44 </entry> 45 <entry> 46 <key> <value>周瑜</value> </key> 47 <value>东吴</value> 48 </entry> 49 </map> 50 </property> 51 <property name="palaces"> 52 <props> 53 <prop key="china">故宫</prop> 54 <prop key="russia">克里姆林宫</prop> 55 <prop key="france">卢浮宫</prop> 56 </props> 57 </property> 58 59 <!-- set注入，如果是引用类型，依赖注入 ,使用 ref 标签 --> 60 <property name="singer" > 61 <ref bean="singer"/> 62 </property> 63 <property name="dancer" ref="dancer"></property> 64 <!-- 3.自动注入 ，需要写set方法。--> 65 <!-- emp属性没有配置，会根据bean里的 autowire="byName" 自动注入 --> 66 </bean> 67 <!-- 使用p标签注入 ,基本属性直接写入值，依赖属性，指向id --> 68 <bean id="emp" class="com.ioc.Emp" p:ename="张良" p:age="25" p:singer-ref="singer"> 69 </bean> 70 71 </beans>
上面少了：<bean id="singer" class="com.aop.Singer"></bean>
<bean id="dancer" class="com.adviceAop.Dancer" ></bean>
三、测试类
1 package com.ioc;
2
3 import org.springframework.context.ApplicationContext;
4 import org.springframework.context.support.ClassPathXmlApplicationContext;
5
6 import com.log4j.LoggerTest;
7 /**
8 * 测试注入代码
9 */
10 public class PersonTest {
11
12 public static void main(String[] args) {
13 //加载Spring配置文件
14 ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");
15 //通过bean的 id和 类型，获取类对象
16 Person per = ac.getBean("person",Person.class);
17 System.out.println(per.toString());
18 //添加日志
19 // LoggerTest.log.info(per.toString());
20 /*
21 * Person [pname=项羽, age=27, loves=[塞外骑马, 江南采莲, 剪烛西窗],
22 * books=[小窗幽记, 围炉夜话, 菜根谭], heros={曹操=北魏, 赵云=西蜀, 周瑜=东吴},
23 * palaces={france=卢浮宫, china=故宫, russia=克里姆林宫},
24 * [email protected], [email protected],
25 * [email protected], addr=祖籍钱塘]
26 */
27
28 //通过bean 的id获取类，再将Object 强转成对应的类型。
29 Emp emp = (Emp) ac.getBean("emp");
30 System.out.println(emp.getEname()+"\t"+emp.getAge());//张良 25
31 }
32
33 }
时间： 2024-04-01 00:39:27