Spring3中@Value为Bean的属性注入配置文件配置
作者:luckystar
日期:
在Spring3中,可以通过@Value注解为Bean的属性注入配置文件中的配置。
配置文件applicationContext.xml:
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<context:component-scan base-package="com.hyxt"></context:component-scan>
<bean id="propertyConfiguer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath:config.properties</value>
</list>
</property>
</bean>
</beans>
一个测试的Service:
package com.hyxt.cache.ehcache.demo;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import sun.rmi.transport.ObjectTable;
import java.util.Date;
/**
* Created by qince on 2015/3/24.
*/
@Service
public class ConfigTestService {
@Value(value = "${name}")
private String name;
@Value(value = "${age}")
private int age;
@Value(value = "${birthday}")
private String birthday;
public Object[] getConfigs() {
Object[] configArray = new Object[3];
configArray[0] = name;
configArray[1] = age;
configArray[2] = birthday;
return configArray;
}
}
测试类:
package com.hyxt.cache.ehcache.demo;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import static org.junit.Assert.*;
public class ConfigTestServiceTest {
private ConfigTestService configTestService;
@Before
public void setUp() throws Exception {
ApplicationContext applicationContext = new ClassPathXmlApplicationContext("classpath:applicationContext.xml");
configTestService = applicationContext.getBean(ConfigTestService.class);
}
@After
public void tearDown() throws Exception {
configTestService = null;
}
@Test
public void testGetConfigs() throws Exception {
System.out.println("测试通过注解的方式注入Bean的属性");
Object[] result =configTestService.getConfigs();
if (null != result) {
for (Object item : result) {
System.out.println(item);
}
}
}
}
<bean id="propertyConfiguer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>classpath:config.properties</value>
</list>
</property>
</bean>
也可以换成:
<context:property-placeholder file-encoding="UTF-8" location="config.properties"/>
作者:qincidong
出处:http://qincidong.github.io/blog/2015/03/24/spring-value-annotation.html
本文版权归作者所有,欢迎转载,但未经作者同意必须保留此段声明,且在文章页面明显位置给出原文连接。
出处:http://qincidong.github.io/blog/2015/03/24/spring-value-annotation.html
本文版权归作者所有,欢迎转载,但未经作者同意必须保留此段声明,且在文章页面明显位置给出原文连接。