Example 2: Parse Properties configuration


  • The basic configuration format based on the Properties file is as follows. Please also name the file configuration.properties and place it in the cfgs directory under the config_home path:

    #--------------------------------------------------------------------------
    # 配置文件内容格式: properties.<categoryName>.<propertyName>=[propertyValue]
    #
    # 注意: attributes将作为关键字使用, 用于表示分类, 属性, 集合和MAP的子属性集合
    #--------------------------------------------------------------------------
    
    # 举例1: 默认分类下表示公司名称, 默认分类名称为default
    properties.default.company_name=Apple Inc.
    
    #--------------------------------------------------------------------------
    # 数组和集合数据类型的表示方法: 多个值之间用'|'分隔, 如: Value1|Value2|...|ValueN
    #--------------------------------------------------------------------------
    properties.default.products=iphone|ipad|imac|itouch
    
    #--------------------------------------------------------------------------
    # MAP<K, V>数据类型的表示方法:
    # 如:产品规格(product_spec)的K分别是color|weight|size|age, 对应的V分别是热red|120g|small|2015
    #--------------------------------------------------------------------------
    properties.default.product_spec.color=red
    properties.default.product_spec.weight=120g
    properties.default.product_spec.size=small
    properties.default.product_spec.age=2015
    
    # 每个MAP都有属于其自身的属性列表(深度仅为一级), 用attributes表示, abc代表属性key, xyz代表属性值
    # 注: MAP数据类型的attributes和MAP本身的表示方法达到的效果是一样的
    properties.default.product_spec.attributes.abc=xyz
  • Modify the configuration class DemoConfig as follows, specify the configuration file content parser through the @ConfigurationProvider annotation:

    @Configuration("cfgs/configuration.properties")
    @ConfigurationProvider(PropertyConfigurationProvider.class)
    public class DemoConfig extends DefaultConfiguration {
    }

  • Test code, complete module initialization and load configuration file content:

    public static void main(String[] args) throws Exception {
        YMP.get().init();
        try {
            DemoConfig _cfg = new DemoConfig();
            if (Cfgs.get().fillCfg(_cfg)) {
                System.out.println(_cfg.getString("company_name"));
                System.out.println(_cfg.getMap("product_spec"));
                System.out.println(_cfg.getList("products"));
            }
        } finally {
            YMP.get().destroy();
        }
    }
  • Re-execute the example code, the execution result is the same as Example 1:

    Apple Inc.
    {abc=xzy, color=red, size=small, weight=120g, age=2015}
    [itouch, imac, ipad, iphone]