优化

matrix-mybatis/matrix-mybatis-core/src/main/java/com/secoo/mall/mybatis/config/MatrixMybatisGlobalConfig.java

@@ -17,7 +17,7 @@ public class MatrixMybatisGlobalConfig extends GlobalConfig {
      */
     public MatrixMybatisGlobalConfig() {
         this.setMetaObjectHandler(getFillDefaultValueHandler());
-        this.setDbConfig(getDbConfig());
+        this.setDbConfig(getDefaultDbConfig());
     }
 
     public DbConfig getDefaultDbConfig() {