@PropertiesSource注解读取配置文件中的数据

向右看齐 2024-02-18 16:38 6阅读 0赞

task.properties配置文件:

corn=0/1 * * * * ?
    demo.url=http://www.baidu.com
    name=job

读取方式:1 加载配置文件:@PropertySource(value = "classpath:task.properties") 
     读取: 
     注册bean: 
     @Bean
    public static PropertySourcesPlaceholderConfigurer propertyConfigInDev() {
        return new PropertySourcesPlaceholderConfigurer();
    } 也可以在xml中<bean>标签注册. 
     @Value(value = "${demo.url}")
    private String name; 
     
     读取方式2: 
     加载配置文件:@PropertySource(value = "classpath:task.properties") 注入Environment对象 
     @Autowired
    private Environment environment; 通过environment对象获取配置文件中的数据 
     String corn = environment.getProperty("demo.url"); 这里是我写的一个定时器的Demo: package task;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.beans.factory.annotation.Value;
    import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Lazy;
    import org.springframework.context.annotation.PropertySource;
    import org.springframework.context.support.PropertySourcesPlaceholderConfigurer;
    import org.springframework.core.env.Environment;
    import org.springframework.scheduling.annotation.Scheduled;
    import org.springframework.stereotype.Component;
    
    /**
     * Create by szw on 2017/11/23 10:05
     */
    @Component
    @Lazy(false)
    @PropertySource(value = "classpath:task.properties")
    public class SpringTask {
        @Autowired
        private Environment environment;
        @Value(value = "${demo.url}")
        private String name;
    
        @Scheduled(cron = "0/1 * * * * ? ")
        public void task() {
    
    
            String corn = environment.getProperty("demo.url");
            System.out.println("我的名字"+name);
            System.out.println("我执行了:"+corn);
            System.out.println("执行");
        }
        @Bean
        public static PropertySourcesPlaceholderConfigurer propertyConfigInDev() {
            return new PropertySourcesPlaceholderConfigurer();
        }
    }