Spring EL方法调用实例

Spring EL在注解的形式

package com.yiibai.core;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;

@Component("customerBean")
public class Customer {

	@Value("#{‘yiibai‘.toUpperCase()}")
	private String name;

	@Value("#{priceBean.getSpecialPrice()}")
	private double amount;

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public double getAmount() {
		return amount;
	}

	public void setAmount(double amount) {
		this.amount = amount;
	}

	@Override
	public String toString() {
		return "Customer [name=" + name + ", amount=" + amount + "]";
	}

}

package com.yiibai.core;

import org.springframework.stereotype.Component;

@Component("priceBean")
public class Price {

	public double getSpecialPrice() {
		return new Double(199.09);
	}

}

输出

Customer [name=YIIBAI, amount=199.09]

一点解释

@Value("#{‘yiibai‘.toUpperCase()}")
private String name;

在 ‘priceBean‘ Bean上调用getSpecialPrice() 方法

@Value("#{priceBean.getSpecialPrice()}")
private double amount;

Spring EL在XML的形式

<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
	http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
 
	<bean id="customerBean" class="com.yiibai.core.Customer">
		<property name="name" value="#{‘yiibai‘.toUpperCase()}" />
		<property name="amount" value="#{priceBean.getSpecialPrice()}" />
	</bean>
 
	<bean id="priceBean" class="com.yiibai.core.Price" />
	
</beans>

输出

Customer [name=YIIBAI, amount=199.09]