手把手教你做关键词匹配项目（搜索引擎）---- 第十六天，教你做----

手把手教你做关键词匹配项目（搜索引擎）---- 第十六天，教你做----

第十六天

友情客串：屌丝的坑人表单神器

起点：手把手教你做关键词匹配项目（搜索引擎）---- 第一天

回顾：手把手教你做关键词匹配项目（搜索引擎）---- 第十五天

14天pdf版：http://files.cnblogs.com/oshine/%E6%89%8B%E6%8A%8A%E6%89%8B%E6%95%99%E4%BD%A0%E5%81%9A%E5%85%B3%E9%94%AE%E8%AF%8D%E5%8C%B9%E9%85%8D%E9%A1%B9%E7%9B%AE%2814%E5%A4%A9%29.pdf

15天内的源码:
http://files.cnblogs.com/oshine/myproject.rar

从上次小帅帅跟于老大讨论完毕后，有个很郁闷的事情还没定下来，就是我们已有对应关系、反义词以及近义词这些数据它的数据格式是怎样的？

小帅帅要弄懂这些才能继续进行下去，于是他又去请教于老大。

于老大就对小帅帅说，我们先不考虑这么多因素，我们先从实际出发，我们先做反义词这块，就先从女装开始，女装是个类目吧，我们就按类目开始做。

那么表结构的字段就有类目、反义词。

小帅帅把表创建了出来：

<span>CREATE</span> <span>TABLE</span><span> `category_backlist` (
   `cid` </span><span>BIGINT</span>(<span>20</span>) <span>DEFAULT</span> <span>NULL</span> COMMENT <span>'</span><span>类目ID</span><span>'</span><span>,
   `catmatch` </span><span>VARCHAR</span>(<span>50</span>) <span>CHARACTER</span> <span>SET</span> utf8 <span>DEFAULT</span> <span>NULL</span> COMMENT <span>'</span><span>类目名称</span><span>'</span><span>,   
   `word` </span><span>VARCHAR</span>(<span>18</span>) <span>CHARACTER</span> <span>SET</span> utf8 <span>DEFAULT</span> <span>NULL</span> COMMENT <span>'</span><span>关键词</span><span>'</span><span>,  
   `created` </span><span>DATETIME</span> <span>DEFAULT</span> <span>NULL</span> COMMENT <span>'</span><span>录入时间</span><span>'</span><span>,
   </span><span>UNIQUE</span> <span>KEY</span><span> `cid` (`cid`,`keyword`)
 ) ENGINE</span><span>=</span>INNODB <span>DEFAULT</span> CHARSET<span>=</span>utf8 COLLATE<span>=</span>utf8_bin

小帅帅并把数据补齐了。

<span>INSERT</span> <span>INTO</span> category_backlist(cid,catmatch,word)<span>VALUES</span>("<span>50010850</span><span>","女装","男");
</span><span>INSERT</span> <span>INTO</span> category_backlist(cid,catmatch,word)<span>VALUES</span>("<span>50010850</span><span>","女装","童");
</span><span>INSERT</span> <span>INTO</span> category_backlist(cid,catmatch,word)<span>VALUES</span>("<span>50010850</span><span>","女装","宝宝");
#......</span>

小帅帅很轻松的把代码也改正了一下。

<?<span>php
</span><span>abstract</span> <span>class</span><span> CharListHandle {

    </span><span>protected</span> <span>$charlist</span><span>;
    </span><span>protected</span> <span>$selectorItem</span><span>;
    </span><span>public</span> <span>function</span> __construct(<span>$charlist</span>,<span>$selectorItem</span><span>){
        </span><span>$this</span>->charlist = <span>$charlist</span><span>;
        </span><span>$this</span>->selectorItem = <span>$selectorItem</span><span>;
    }

    </span><span>abstract</span> <span>function</span> <span>exec</span><span>();
}

</span><span>class</span> BacklistCharListHandle <span>extends</span><span> CharListHandle {
    </span><span>public</span> <span>function</span> <span>exec</span><span>(){
        </span><span>$sql</span> = "select word from category_backlist where cid='<span>$this</span>->selectorItem->cid'"<span>;
        </span><span>$backlist</span> = DB::makeArray(<span>$sql</span><span>);
        </span><span>foreach</span>(<span>$backlist</span> <span>as</span> <span>$char</span><span>){
            </span><span>$this</span>->charlist->addBlacklist(<span>$char</span><span>);
        }

    }

}

</span><span>class</span><span> Selector
{

    </span><span>private</span> <span>static</span> <span>$charListHandle</span> = <span>array</span><span>(      
        </span>"黑名单" => "BacklistCharListHandle"<span>
    );

    </span><span>public</span> <span>static</span> <span>function</span> select(<span>$num_iid</span><span>)
    {
        </span><span>$selectorItem</span> = SelectorItem::createFromApi(<span>$num_iid</span><span>);

        Logger</span>::trace(<span>$selectorItem</span>-><span>props_name);

        </span><span>$charlist</span> = <span>new</span><span> CharList();

        </span><span>foreach</span> (self::<span>$charListHandle</span> <span>as</span> <span>$matchKey</span> => <span>$className</span><span>) {

            </span><span>$handle</span> = self::createCharListHandle(<span>$className</span>, <span>$charlist</span>, <span>$selectorItem</span><span>);
            </span><span>$handle</span>-><span>exec</span><span>();
           
        }

        </span><span>//</span><span>do search things</span>
        <span>var_dump</span>(<span>$charlist</span><span>);
    }

    </span><span>public</span> <span>static</span> <span>function</span> createCharListHandle(<span>$className</span>, <span>$charlist</span>, <span>$selectorItem</span><span>)
    {
        </span><span>if</span> (<span>class_exists</span>(<span>$className</span><span>)) {
            </span><span>return</span> <span>new</span> <span>$className</span>(<span>$charlist</span>, <span>$selectorItem</span><span>);
        }
        </span><span>throw</span> <span>new</span> <span>Exception</span>("class not exists", 0<span>);
    }
}</span>

小帅帅的原稿本来不是这样的，他的原稿：

<span>CharListHandle 的属性有两个 一个是charlist 一个是cid<br /><br />于老大看了之后就要小帅帅把cid换成了selectorItem，原因嘛要小帅帅去琢磨。<br /><br /><br /></span>

小帅帅还写了个DB操作的类，代码如下：

<?<span>php

</span><span>define</span>('DATABASE_HOST','127.0.0.1'<span>);
</span><span>define</span>('DATABASE_USER','xiaoshuaishuai'<span>);
</span><span>define</span>('DATABASE__PASSWORD','xiaoshuaishuai'<span>);
</span><span>define</span>('DATABASE_CHARSET','utf-8'<span>);

</span><span>class</span><span> DB {

    </span><span>public</span> <span>static</span> <span>$conn</span> = <span>null</span><span>;
    
    </span><span>public</span> <span>static</span> <span>function</span><span> Connect(){
        </span><span>if</span>(self::<span>$conn</span> == <span>null</span><span>){
            self</span>::<span>$conn</span> = <span>mysql_connect</span>(DATABASE_HOST,DATABASE_USER,<span>DATABASE__PASSWORD);
            </span><span>mysql_query</span>("SET NAMES '".DATABASE_CHARSET."'",self::<span>$conn</span><span>);
            </span><span>mysql_select_db</span>("dict",self::<span>$conn</span><span>);
            </span><span>return</span> self::<span>$conn</span><span>;
        }
        </span><span>return</span> self::<span>$conn</span><span>;
    }
    
    </span><span>public</span> <span>static</span> <span>function</span> Query(<span>$sql</span><span>){
       </span><span>return</span> <span>mysql_query</span>(<span>$sql</span>,self::<span>Connect());
    }
    
    </span><span>public</span> <span>static</span> <span>function</span> makeArray(<span>$sql</span><span>){
        </span><span>$rs</span> = self::Query(<span>$sql</span><span>);
        </span><span>$result</span> = <span>array</span><span>();
        </span><span>while</span>(<span>$data</span> = <span>mysql_fetch_assoc</span>(<span>$rs</span><span>)){
            </span><span>$result</span>[] = <span>$data</span><span>;
        }
        </span><span>return</span> <span>$result</span><span>;
    }
} </span>

小帅帅把这代码拿给于老大的时候，于老大很开心。

于老大对小帅帅说，现在我们这个黑名单的改动，不管你怎么加或者怎么删除都不会影响系统的正常运行了把，而且我们可以很好的跟业务结合，这下这个黑名单的任务，小帅帅你觉得教给谁去做比较合适。

小帅帅听到可以把任务转交，很开心：做这些事情，我觉得产品或者运营部门比较合适。

于老大拍了拍小帅帅的肩膀说道：这件事情就交给你去落实了。

 

偶尔的职责分离不一定是懒惰的行为，从整体上来说是让整个服务做到更专业、更有效率。

 

小帅帅只好去落实于老大的任务去了