repos init.

src/main/java/com/serliunx/ddns/constant/SystemConstants.java

@@ -0,0 +1,68 @@
+package com.serliunx.ddns.constant;
+
+import java.io.File;
+
+/**
+ * 系统常量
+ * @author SerLiunx
+ * @since 1.0
+ */
+public final class SystemConstants {
+
+    private SystemConstants(){throw new UnsupportedOperationException();}
+
+    /**
+     * 保存实例的文件夹
+     */
+    public static final String INSTANCE_FOLDER_NAME = "instances";
+
+    /**
+     * 运行目录
+     */
+    public static final String USER_DIR = System.getProperty("user.dir");
+
+    /**
+     * JSON文件后缀
+     */
+    public static final String JSON_FILE = ".json";
+
+    /**
+     * XML文件后缀
+     */
+    public static final String XML_FILE = ".xml";
+
+    /**
+     * YML文件后缀
+     */
+    public static final String YML = ".yml";
+
+    /**
+     * properties配置文件名称
+     */
+    public static final String PROPERTIES_FILE = "settings.properties";
+
+    /**
+     * sqlite
+     */
+    public static final String DATABASE_SQLITE = "sqlite";
+
+    /**
+     * XML格式的实例文件根元素名称
+     */
+    public static final String XML_ROOT_INSTANCE_NAME = "instance";
+
+    /**
+     * 实例类型字段名
+     */
+    public final static String TYPE_FIELD = "type";
+
+    /**
+     * 用户目录下的实例存放位置
+     */
+    public static final String USER_INSTANCE_DIR = USER_DIR + File.separator + INSTANCE_FOLDER_NAME;
+
+    /**
+     * 用户目录下的.properties配置文件
+     */
+    public static final String USER_SETTINGS_PROPERTIES_PATH = USER_DIR + File.separator + PROPERTIES_FILE;
+}