通过@Value注解读取.properties配置内容

jdbc.jdbcUrl=jdbc:mysql://localhost:3306/commentDemo?useUnicode=true&characterEncoding=UTF-8

<bean id="configProperties" class="org.springframework.beans.factory.config.PropertiesFactoryBean">
<property name="locations">
<list>
<value>classpath:database.properties</value>
</list>
</property>
</bean>
<bean id="propertyConfigurer"
class="org.springframework.beans.factory.config.PreferencesPlaceholderConfigurer">
<property name="properties" ref="configProperties" />
</bean>

@Controller
@RequestMapping("/value")
public class ValuePropertyController extends ApplicationController{

@Value("#{configProperties['jdbc.jdbcUrl']}")
private String jdbcUrl;

@RequestMapping
public String value(){
System.out.println(jdbcUrl);
return "";
}
}