在xml中定义Spring @PropertySource,并在环境中使用它

在Spring JavaConfig中,我可以定义属性源并注入Environment

@PropertySource("classpath:application.properties")

@Inject private Environment environment;

如果在xml中,该怎么办?我正在使用context:property-

placeholder,并在JavaConfig类@ImportResource上导入xml。但是我无法使用environment.getProperty(“

xx”)检索在属性文件中定义的属性

<context:property-placeholder location="classpath:application.properties" />

回答:

AFAIK,无法通过纯XML做到这一点。无论如何,这是我今天早上做的一些代码:

一,测试:

public class EnvironmentTests {

@Test

public void addPropertiesToEnvironmentTest() {

ApplicationContext context = new ClassPathXmlApplicationContext(

"testContext.xml");

Environment environment = context.getEnvironment();

String world = environment.getProperty("hello");

assertNotNull(world);

assertEquals("world", world);

System.out.println("Hello " + world);

}

}

然后上课:

public class PropertySourcesAdderBean implements InitializingBean,

ApplicationContextAware {

private Properties properties;

private ApplicationContext applicationContext;

public PropertySourcesAdderBean() {

}

public void afterPropertiesSet() throws Exception {

PropertiesPropertySource propertySource = new PropertiesPropertySource(

"helloWorldProps", this.properties);

ConfigurableEnvironment environment = (ConfigurableEnvironment) this.applicationContext

.getEnvironment();

environment.getPropertySources().addFirst(propertySource);

}

public Properties getProperties() {

return properties;

}

public void setProperties(Properties properties) {

this.properties = properties;

}

public void setApplicationContext(ApplicationContext applicationContext)

throws BeansException {

this.applicationContext = applicationContext;

}

}

和testContext.xml:

<?xml version="1.0" encoding="UTF-8"?>

<beans ...>

<util:properties id="props" location="classpath:props.properties" />

<bean id="propertySources" class="org.mael.stackoverflow.testing.PropertySourcesAdderBean">

<property name="properties" ref="props" />

</bean>

</beans>

和props.properties文件:

hello=world

这是很简单,只需使用一个ApplicationContextAwarebean并获得ConfigurableEnvironment(Web)ApplicationContext。然后只需PropertiesPropertySourceMutablePropertySources

以上是 在xml中定义Spring @PropertySource,并在环境中使用它 的全部内容, 来源链接: utcz.com/qa/419266.html

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