4.依赖注入

1。属性注入

属性注入式通过setXxx()方法注入Bean属性值或依赖对象

 1 package com.asm;
 2 
 3 import org.springframework.beans.BeansException;
 4 import org.springframework.beans.factory.BeanFactory;
 5 import org.springframework.beans.factory.BeanFactoryAware;
 6 import org.springframework.beans.factory.BeanNameAware;
 7 import org.springframework.beans.factory.DisposableBean;
 8 import org.springframework.beans.factory.InitializingBean;
 9 
10 public class Car  {
11     private String brand;
12     private String color;
13     private int maxSpeed;
14     public String getBrand() {
15         return brand;
16     }
17     public void setBrand(String brand) {
18         this.brand = brand;
19     }
20     public String getColor() {
21         return color;
22     }
23     public void setColor(String color) {
24         this.color = color;
25     }
26     public int getMaxSpeed() {
27         return maxSpeed;
28     }
29     public void setMaxSpeed(int maxSpeed) {
30         this.maxSpeed = maxSpeed;
31     }
32   
33 
34 }

 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" xmlns:p="http://www.springframework.org/schema/p"
 4     xmlns:context="http://www.springframework.org/schema/context"
 5     xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
 6     xsi:schemaLocation="http://www.springframework.org/schema/beans 
 7        http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
 8        http://www.springframework.org/schema/context 
 9        http://www.springframework.org/schema/context/spring-context-3.1.xsd
10        http://www.springframework.org/schema/tx 
11        http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
12        http://www.springframework.org/schema/aop
13        http://www.springframework.org/schema/aop/spring-aop-3.1.xsd">
14        
15      
16     
17     <bean id="car" class="com.asm.Car">
18         <property name="maxSpeed"><value>200</value></property>
19         <property name="brand"><value>红旗</value></property>
20         <property name="color"><value>red</value></property>
21     </bean>
22      
23 </beans>
24

 <property name="maxSpeed"><value>200</value></property>
仅要求类中必须有setMaxSpeed()方法




2.构造函数注入
2.1按类型匹配入参

 1 package com.asm;
 2 
 3 import org.springframework.beans.BeansException;
 4 import org.springframework.beans.factory.BeanFactory;
 5 import org.springframework.beans.factory.BeanFactoryAware;
 6 import org.springframework.beans.factory.BeanNameAware;
 7 import org.springframework.beans.factory.DisposableBean;
 8 import org.springframework.beans.factory.InitializingBean;
 9 
10 public class Car  {
11     private String brand;
12     private String color;
13     private int maxSpeed;
14     
15     public Car(String brand, String color) {
16         super();
17         this.brand = brand;
18         this.color = color;
19     }
20     public String getBrand() {
21         return brand;
22     }
23     public void setBrand(String brand) {
24         this.brand = brand;
25     }
26     public String getColor() {
27         return color;
28     }
29     public void setColor(String color) {
30         this.color = color;
31     }
32     public int getMaxSpeed() {
33         return maxSpeed;
34     }
35     public void setMaxSpeed(int maxSpeed) {
36         this.maxSpeed = maxSpeed;
37     }
38   
39 
40 }

 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" xmlns:p="http://www.springframework.org/schema/p"
 4     xmlns:context="http://www.springframework.org/schema/context"
 5     xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
 6     xsi:schemaLocation="http://www.springframework.org/schema/beans 
 7        http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
 8        http://www.springframework.org/schema/context 
 9        http://www.springframework.org/schema/context/spring-context-3.1.xsd
10        http://www.springframework.org/schema/tx 
11        http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
12        http://www.springframework.org/schema/aop
13        http://www.springframework.org/schema/aop/spring-aop-3.1.xsd">
14        
15      
16     
17     <bean id="car" class="com.asm.Car">
18         <constructor-arg type="java.lang.String">
19             <value>红旗AAAAA</value>
20         </constructor-arg>
21         <constructor-arg type="java.lang.String">
22             <value>red</value>
23         </constructor-arg>
24     </bean>
25     
70     
71 </beans>

2.通过索引入参

 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" xmlns:p="http://www.springframework.org/schema/p"
 4     xmlns:context="http://www.springframework.org/schema/context"
 5     xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
 6     xsi:schemaLocation="http://www.springframework.org/schema/beans 
 7        http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
 8        http://www.springframework.org/schema/context 
 9        http://www.springframework.org/schema/context/spring-context-3.1.xsd
10        http://www.springframework.org/schema/tx 
11        http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
12        http://www.springframework.org/schema/aop
13        http://www.springframework.org/schema/aop/spring-aop-3.1.xsd">
14        
15      
16     
17     <bean id="car" class="com.asm.Car">
18         <constructor-arg index="0">
19             <value>红旗AAAAA</value>
20         </constructor-arg>
21         <constructor-arg index="1">
22             <value>red</value>
23         </constructor-arg>
24     </bean>
25      
26      
27     
28 </beans>

3.联合使用类型和索引入参

 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" xmlns:p="http://www.springframework.org/schema/p"
 4     xmlns:context="http://www.springframework.org/schema/context"
 5     xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
 6     xsi:schemaLocation="http://www.springframework.org/schema/beans 
 7        http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
 8        http://www.springframework.org/schema/context 
 9        http://www.springframework.org/schema/context/spring-context-3.1.xsd
10        http://www.springframework.org/schema/tx 
11        http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
12        http://www.springframework.org/schema/aop
13        http://www.springframework.org/schema/aop/spring-aop-3.1.xsd">
14        
15      
16     
17     <bean id="car" class="com.asm.Car">
18         <constructor-arg index="0" type="java.lang.String">
19             <value>红旗AAAAA</value>
20         </constructor-arg>
21         <constructor-arg index="1" type="java.lang.String">
22             <value>red</value>
23         </constructor-arg>
24     </bean>
25 
26 </beans>
27

4.通过自身反射入参

 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" xmlns:p="http://www.springframework.org/schema/p"
 4     xmlns:context="http://www.springframework.org/schema/context"
 5     xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"
 6     xsi:schemaLocation="http://www.springframework.org/schema/beans 
 7        http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
 8        http://www.springframework.org/schema/context 
 9        http://www.springframework.org/schema/context/spring-context-3.1.xsd
10        http://www.springframework.org/schema/tx 
11        http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
12        http://www.springframework.org/schema/aop
13        http://www.springframework.org/schema/aop/spring-aop-3.1.xsd">
14        
15      
16     
17     <bean id="car" class="com.asm.Car">
18         <constructor-arg index="0" type="java.lang.String">
19             <value>红旗AAAAA</value>
20         </constructor-arg>
21         <constructor-arg index="1" type="java.lang.String">
22             <value>red</value>
23         </constructor-arg>
24         <constructor-arg index="2" >
25             <ref bean="boss"/>
26         </constructor-arg>
27     </bean>
28      
29      <bean id="boss" class="com.asm.Boss"></bean>
30      
31 </beans>

posted on 2016-06-17 16:46 Sharpest 阅读(176) 评论(0) 收藏举报