springboot使用工具类无需注入获取yml配置项

1.新建 BeanConfiguration 类，用于项目启动构造我们的工具类

1package webapp.config;
2
3import org.springframework.beans.factory.config.YamlPropertiesFactoryBean;
4import org.springframework.context.annotation.Bean;
5import org.springframework.context.annotation.Configuration;
6import org.springframework.core.io.ClassPathResource;
7import org.springframework.core.io.Resource;
8import webapp.util.YamlConfigurerUtil;
9import java.util.Properties;
10
11@Configuration
12public class BeanConfiguration {
13    @Bean
14    public YamlConfigurerUtil ymlConfigurerUtil() {
15        //1:加载配置文件
16        Resource app = new ClassPathResource("application.yml");
17        YamlPropertiesFactoryBean yamlPropertiesFactoryBean = new YamlPropertiesFactoryBean();
18        // 2:将加载的配置文件交给 YamlPropertiesFactoryBean
19        yamlPropertiesFactoryBean.setResources(app);
20        // 3：将yml转换成 key：val
21        Properties properties = yamlPropertiesFactoryBean.getObject();
22        // 4: 将Properties 通过构造方法交给我们写的工具类
23        YamlConfigurerUtil ymlConfigurerUtil = new YamlConfigurerUtil(properties);
24        return ymlConfigurerUtil;
25    }
26
27}

2.工具类实现

1package webapp.util;
2
3import java.util.Properties;
4
5public class YamlConfigurerUtil {
6
7    private static Properties ymlProperties = new Properties();
8
9    public YamlConfigurerUtil(Properties properties){
10        ymlProperties = properties;
11    }
12
13    public static String getStrYmlVal(String key){
14        return ymlProperties.getProperty(key);
15    }
16
17    public static Integer getIntegerYmlVal(String key){
18        return Integer.valueOf(ymlProperties.getProperty(key));
19    }
20
21}

3.调用示例

1String password = YamlConfigurerUtil.getStrYmlVal("redis.password");
2
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