Environment
注入外部的值
@Configuration
//声明属性源
@PropertySource("classpath:/com/soundsystem/app.prooerties")
public class ExpressiveConfig(){
@Autowired
Environment env;
@Bean
public BlankDisc disc(){
//检索属性值
return new BlankDisc(
env.getProperty("disc.title")
);
}
}//app.properties
disc.title=titleEnvironment
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