升级：1、增加界面夜间模式

2、qtask 功能交互升级
     3、mysql连接管理增加心跳保活
     4、其他修改

src/main/java/net/tccn/base/BaseService.java

@@ -1,11 +1,15 @@
 package net.tccn.base;
 
+import org.redkale.annotation.Resource;
 import org.redkale.convert.json.JsonConvert;
+import org.redkale.service.RetResult;
 import org.redkale.service.Service;
 import org.redkale.source.CacheMemorySource;
+import org.redkale.source.DataSource;
+import org.redkale.util.Sheet;
 
-import javax.annotation.Resource;
 import java.io.File;
+import java.util.List;
 import java.util.Properties;
 import java.util.function.Supplier;
 import java.util.logging.Logger;
@@ -29,12 +33,33 @@ public class BaseService implements Service {
 
     @Resource(name = "APP_HOME")
     protected File APP_HOME;
-
+    @Resource(name = "meta")
+    protected DataSource metaSource;
     protected static Properties prop = new Properties();
     protected static TplKit tplKit = TplKit.use(true);
-
     private static boolean tplInit = false;
 
+    protected final static RetResult RET_SUCCESS = RetResult.success();
+    protected final static RetResult RET_EMPTY_SHEET = RetResult.success(new Sheet<>(0, List.of()));
+    protected final static RetResult RET_EMPTY_LIST = RetResult.success(List.of());
+
+    protected RetResult retError(String info) {
+        return new RetResult<>(100, info);
+    }
+
+    protected RetResult retError(int code, String info) {
+        return new RetResult<>(code, info);
+    }
+
+    protected <T> RetResult<T> render(T obj) {
+        return new RetResult<>(obj);
+    }
+
+    protected RetResult render() {
+        return RET_SUCCESS;
+    }
+
+
     protected <T> T getT(String key, Class<T> clazz, Supplier<T> supplier) {
         Object obj = cacheSource.getAndRefresh(key, 1000 * 60 * 3, clazz);
         if (obj != null) {