获取properties文件中的所有配置

た入场券 2024-04-17 06:24 20阅读 0赞

public class GetProps {
        private static GetProps instance = new GetProps();
        private final Logger logger = LoggerFactory.getLogger(this.getClass());
    
        private GetProps() {
    
        }
      /**
         * 读取配置文件，获取所有的属性
         *
         * @param filePath 文件路径
         */
    
        public Map<String, String> getValue(String filePath) {
    
            Map<String, String> amap = new HashMap<>();
            try {
                Properties prop = new Properties();
                prop.load(this.getClass().getResourceAsStream(filePath));
    
                for (String key : prop.stringPropertyNames()) {
                    amap.put(key, prop.getProperty(key));
                }
            } catch (FileNotFoundException e) {
                logger.error("配置文件读取失败；文件未找到");
                e.printStackTrace();
            } catch (IOException e) {
                logger.error("配置文件读取失败；" + e.getStackTrace());
                e.printStackTrace();
            }
    
            return amap;
        }
        //方法没有同步代码，调用效率高
        public static GetProps getInstance() {
            return instance;
        }
    
    
    
    }

Java遍历Properties的所有的元素，四种方法详细总结

/**
         * 输出properties的key和value
         */
        public static void printProp(Properties properties) {
            System.out.println("---------（方式一）------------");
            for (String key : properties.stringPropertyNames()) {
                System.out.println(key + "=" + properties.getProperty(key));
            }
     
            System.out.println("---------（方式二）------------");
            Set<Object> keys = properties.keySet();//返回属性key的集合
            for (Object key : keys) {
                System.out.println(key.toString() + "=" + properties.get(key));
            }
     
            System.out.println("---------（方式三）------------");
            Set<Map.Entry<Object, Object>> entrySet = properties.entrySet();//返回的属性键值对实体
            for (Map.Entry<Object, Object> entry : entrySet) {
                System.out.println(entry.getKey() + "=" + entry.getValue());
            }
     
            System.out.println("---------（方式四）------------");
            Enumeration<?> e = properties.propertyNames();
            while (e.hasMoreElements()) {
                String key = (String) e.nextElement();
                String value = properties.getProperty(key);
                System.out.println(key + "=" + value);
            }
        }
    
    原文链接：https://blog.csdn.net/qq_27093465/article/details/71108181