ConfigTools新增读取配置方法

修复没有配置文件时，QQbot无法初始化的问题

src/main/java/com/yutou/bilibili/Tools/ConfigTools.java

@@ -27,23 +27,27 @@ public class ConfigTools {
         }
 
     }
-    public static Object load(String type,String key){
-        File file=new File(type);
+    public static Object load(String type, String key) {
+        return load(type, key, Object.class, null);
+    }
+
+    public static <T> T load(String type, String key, Class<T> t) {
+        return load(type, key, t, null);
+    }
+
+    public static <T> T load(String type, String key, Class<T> t, T def) {
+        File file = new File(type);
         //com.yutou.nas.utils.Log.i(type+"配置文件地址:"+file.getAbsolutePath());
-        String src=readFile(file);
-        if(src!=null){
+        String src = readFile(file);
+        if (src != null) {
             try {
-                JSONObject json=JSONObject.parseObject(src);
-                if(json==null){
-                    json=new JSONObject();
-                    saveFile(file,json.toJSONString());
-                }
-                return json.getOrDefault(key, "");
-            }catch (Exception e){
-                return "";
+                JSONObject json = JSONObject.parseObject(src);
+                return json.getObject(key, t);
+            } catch (Exception e) {
             }
         }
-        return "";
+
+        return def;
     }
     public static boolean save(String type,String key,Object data){
         File file=new File(type);