spring bean 配置
1.屬性注入
class：
package com.cmr.spring;
public class HelloWorld {
private String name;
public void setName(String name) {
System.out.println("設定name");
this.name = name;
}
public void hello(){
System.out.println("Hello:"+name);
}
public HelloWorld(String name) {
super();
this.name = name;
}
public HelloWorld() {
}
}
bean配置：
<bean id="car" class="com.cmr.spring.Car">
<constructor-arg value="bmw" index="0"></constructor-arg>
<constructor-arg value="shanghai" index="1"></constructor-arg>
<constructor-arg value="300000" index="2"></constructor-arg>
</bean>
2.構造器注入：
package com.cmr.spring;
public class Car {
private String brand;
private String crop;
private double price;
private int maxSpeed;
public Car(String brand, String crop, double price) {
super();
this.brand = brand;
this.crop = crop;
this.price = price;
}
public Car(String brand, String crop, int maxSpeed) {
super();
this.crop = crop;
this.maxSpeed = maxSpeed;
}
@Override
public String toString() {
return "Car [brand=" + brand + ", crop=" + crop + ", price=" + price
+ ", maxSpeed=" + maxSpeed + "]";
}
}
bean配置：
<bean id="car" class="com.cmr.spring.Car">
<constructor-arg value="bmw" index="0"></constructor-arg>
<constructor-arg value="shanghai" index="1"></constructor-arg>
<constructor-arg value="300000" index="2"></constructor-arg>
</bean>
<bean id="car2" class="com.cmr.spring.Car">
<constructor-arg value="bmw" type="java.lang.String"></constructor-arg>
<constructor-arg value="shanghai" type="java.lang.String"></constructor-arg>
<constructor-arg value="300" type="int"></constructor-arg>
</bean>
3.引用其他bean
package com.cmr.spring;
public class Person {
private String name;
private String tel;
private Car car;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getTel() {
return tel;
}
public void setTel(String tel) {
this.tel = tel;
}
public Car getCar() {
return car;
}
public void setCar(Car car) {
this.car = car;
}
@Override
public String toString() {
return "Person [name=" + name + ", tel=" + tel + ", car=" + car + "]";
}
}
bean：配置
<bean id="person" class="com.cmr.spring.Person">
<property name="name" value="cmr"></property>
<property name="tel" value="18888888888"></property>
<property name="car" ref="car"></property>
</bean>
內部bean配置
<bean id="person2" class="com.cmr.spring.Person">
<property name="name" value="cmr"></property>
<property name="tel" value="18888888888"></property>
<property name="car">
<bean class="com.cmr.spring.Car">
<property name="brand" value="audi"></property>
<property name="crop" value="guangzhou"></property>
<property name="price" value="3000000"></property>
<property name="maxSpeed" value="230"></property>
</bean>
</property>
</bean>
4.list集合
package com.cmr.spring;
import java.util.List;
public class NewPerson {
private String name;
private List<Car> car;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public List<Car> getCar() {
return car;
}
public void setCar(List<Car> car) {
this.car = car;
}
public NewPerson() {
super();
}
@Override
public String toString() {
return "NewPerson [name=" + name + ", car=" + car + "]";
}
}
bean配置：
<bean id="newPerson" class="com.cmr.spring.NewPerson">
<property name="name" value="ly"></property>
<property name="car">
<list >
<ref bean="car"/>
<ref bean="car2"/>
</list>
</property>
</bean>
也可將list共享
<util:list id="carlist" value-type="java.util.List">
<ref bean="car"/>
<ref bean="car2"/>
</util:list>
5.map集合
package com.cmr.spring;
import java.util.Map;
public class FuturePerson {
private Map<String, Car> car;
public Map<String, Car> getCar() {
return car;
}
public void setCar(Map<String, Car> car) {
this.car = car;
}
@Override
public String toString() {
return "FuturePerson [car=" + car + "]";
}
}
bean配置：
<bean id="futurePerson" class="com.cmr.spring.FuturePerson">
<property name="car">
<map>
<entry key="aa">
<ref bean="car"/>
</entry>
<entry key="bb">
<ref bean="car2"/>
</entry>
</map>
</property>
</bean>
5.<props>配置
package com.cmr.spring;
import java.util.Properties;
public class DataSource {
private Properties property;
public Properties getProperty() {
return property;
}
public void setProperty(Properties property) {
this.property = property;
}
@Override
public String toString() {
return "DataSource [property=" + property + "]";
}
}
bean配置：
<bean id="dataSource" class="com.cmr.spring.DataSource">
<property name="property">
<props>
<prop key="jdbc">mysql/jdbc</prop>
<prop key="user">root</prop>
<prop key="pwd">root</prop>
</props>
</property>
</bean>