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ApplicationContextAware
bean并获得ConfigurableEnvironment
从(Web)ApplicationContext
。然后只需PropertiesPropertySource
在MutablePropertySources
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