SpringBoot中读取自定义properties配置文件

配置文件放在src/main/resources目录下

java代码：

/**
 * 系统配置文件
 */
public class GlobalProperties {

    // properties 地址
    private static String[] propertiesLocations = {
            "config/global.properties"
    };
    
    // properties 数据缓存
    private static Map<String, String> propertiesMap = null;
    
    private GlobalProperties() {}
    
    /** 加载配置文件数据 */
    public synchronized static void load() {
        propertiesMap = new HashMap<String, String>();
        loadData();
    }
    
    /** 读取配置文件中的数据 */
    private static void loadData() {
        if(CollectionUtil.isNullOrEmpty(propertiesLocations)) {
            return;
        }
        Properties properties = null;
        for (String string : propertiesLocations) {
            try {
                properties = new Properties();
                InputStream is = getInputStream(string);
                if(null == is) {
                    continue;
                }
                properties.load(is);
            } catch (IOException e) {
                e.printStackTrace();
            }
            if(!properties.isEmpty()) {
                Set<Object> keys = properties.keySet();
                for (Object key : keys) {
                    propertiesMap.put(String.valueOf(key), String.valueOf(properties.get(key)));
                }
            }
            properties.clear();
        }
    }
    
    private static InputStream getInputStream(String resource) {
        InputStream is = null;
        is = GlobalProperties.class.getClassLoader().getResourceAsStream(resource);
        return is;
    }
    
    /** 获取配置文件中的数据 */
    public static String get(String key) {
        if(null == propertiesMap) {
            return null;
        }
        return propertiesMap.get(key);
    }
}

然后在项目启动完成之后调用

/**
 * 全局监听器，项目启动时
 */
public class GlobalApplicationContextEvent implements ApplicationListener<ApplicationContextEvent> {
    private Logger logger = LoggerFactory.getLogger(this.getClass());
    
    @Override
    public void onApplicationEvent(ApplicationContextEvent event) {// 加载配置文件
        GlobalProperties.load();
        
        logger.info("--------------------------------------------");
        logger.info("------------------项目启动中-------------------");
        logger.info("--------------------------------------------");
    }

}

SpringBoot添加监听器：

/**
 * 项目入口
 *
 * @author My
 */
@SpringBootApplication
@EnableTransactionManagement
// 定时任务
@EnableScheduling
public class WebApplication {

    public static void main(String[] args) {

        SpringApplication springApplication = new SpringApplication(WebApplication.class);
        springApplication.addListeners(new GlobalApplicationContextEvent());
        springApplication.run(args);
    }
}