大更新,1投稿系统参考文献的类型增加功能，，，2官网数据库功能

application/master/service/push/AbstractPusher.php

@@ -0,0 +1,53 @@
+<?php
+
+namespace app\master\service\push;
+
+use think\Db;
+
+/**
+ * 推送器基类：提供数据表句柄、凭证读取等公共能力
+ */
+abstract class AbstractPusher implements PusherInterface
+{
+    protected $journal_obj;
+    protected $journal_stage_obj;
+    protected $article_obj;
+    protected $article_author_obj;
+
+    public function __construct()
+    {
+        $this->journal_obj = Db::name('journal');
+        $this->journal_stage_obj = Db::name('journal_stage');
+        $this->article_obj = Db::name('article');
+        $this->article_author_obj = Db::name('article_author');
+    }
+
+    /**
+     * 读取某个数据库的凭证配置
+     * @param string $key credentials.<key>
+     * @return array
+     */
+    protected function cred($key)
+    {
+        $all = config('dbpush.credentials');
+        return isset($all[$key]) ? $all[$key] : [];
+    }
+
+    /**
+     * 读取顶层 dbpush 配置项
+     */
+    protected function conf($key, $default = null)
+    {
+        $val = config('dbpush.' . $key);
+        return $val === null ? $default : $val;
+    }
+
+    /**
+     * 组合文章作者名（逗号分隔）
+     */
+    protected function getAuthorNames($articleId)
+    {
+        $list = $this->article_author_obj->where('article_id', $articleId)->where('state', 0)->column('author_name');
+        return implode(', ', $list);
+    }
+}