手把手教你做关键词匹配项目（搜索引擎）---- 第十三天，教你做第十三天

手把手教你做关键词匹配项目（搜索引擎）---- 第十三天，教你做第十三天

第十三天

 

自从小帅帅被于老大批了之后，心里非常不爽，因为有这样的理由：我已经做到了你想要的，为什么还得不到肯定。

什么样的程序员才是优秀的？小帅帅带着这样的疑问去了解设计模式。

尽管他把设计模式看了很多遍，甚至连设计模式的名字背得滚瓜烂熟，单例模式、抽象工厂模式、建造者模式、工厂模式、原型模式...等。

但是小帅帅还是不知道如何去用，没办法，他只好再次去请教于老大，于老大给了一份代码让他去看，看看里面用了什么设计模式。

 

什么样的程序员才是优秀的？有人说，优秀的程序员是写出可以阅读的代码，而普通的程序员是写出可以运行的代码。

 

于老大的代码如下：

<?<span>php
</span><span>class</span><span> SelectorItem {

    </span><span>private</span> <span>$item</span><span>;

    </span><span>public</span> <span>function</span> __construct(<span>$item</span><span>){
        </span><span>$this</span>->item = <span>$item</span><span>;
    }

    </span><span>public</span> <span>function</span> __get(<span>$name</span><span>){
        </span><span>if</span>(<span>isset</span>(<span>$this</span>->item-><span>$name</span><span>)){
            </span><span>return</span> <span>$this</span>->item-><span>$name</span><span>;
        }
        </span><span>return</span> <span>null</span><span>;
    }

    </span><span>public</span> <span>static</span> <span>function</span> createFromApi(<span>$num_iid</span><span>){
        </span><span>$client</span> = <span>new</span><span> TopClient();
        </span><span>$client</span>->appkey = 'xx'<span>;
        </span><span>$client</span>->secretKey = 'xx'<span>;

        </span><span>$req</span> = <span>new</span><span> ItemGetRequest();
        </span><span>$req</span>->setFields('props_name,property_alias,detail_url,cid,title'<span>);
        </span><span>$req</span>->setNumIid(<span>$num_iid</span><span>);
        </span><span>$resp</span> = <span>$client</span>->execute(<span>$req</span><span>);

        </span><span>if</span>(<span>isset</span>(<span>$resp</span>-><span>code)){
            </span><span>#</span><span> error handle</span>
            <span>throw</span> <span>new</span> <span>Exception</span>(<span>$resp</span>->msg, <span>$resp</span>-><span>code);
        }
        </span><span>return</span> <span>new</span> self(<span>$resp</span>-><span>item);
    }
}


</span><span>class</span><span> CharList {

    </span><span>private</span> <span>$core</span> = <span>array</span><span>();
    </span><span>private</span> <span>$blacklist</span> = <span>array</span><span>();

    </span><span>public</span> <span>function</span> addCore(<span>$char</span><span>){

        </span><span>if</span>(!<span>in_array</span>(<span>$char</span>,<span>$this</span>-><span>core))
            </span><span>$this</span>->core[] = <span>$char</span><span>;
    }
    
    </span><span>public</span> <span>function</span><span> getCore(){
        </span><span>return</span> <span>$this</span>-><span>core;
    }

    </span><span>public</span> <span>function</span> addBlacklist(<span>$char</span><span>){
        </span><span>if</span>(!<span>in_array</span>(<span>$char</span>,<span>$this</span>-><span>blacklist))
            </span><span>$this</span>->blacklist[] = <span>$char</span><span>;
    }
    
    </span><span>public</span> <span>function</span><span> getBlacklist(){
        </span><span>return</span> <span>$this</span>-><span>blacklist;
    }
}

</span><span>abstract</span> <span>class</span><span> CharListHandle {
    
    </span><span>protected</span> <span>$charlist</span><span>;
    </span><span>public</span> <span>function</span> __construct(<span>$charlist</span><span>){
        </span><span>$this</span>->charlist = <span>$charlist</span><span>;
    }
    
    </span><span>abstract</span> <span>function</span> <span>exec</span><span>();
}

</span><span>class</span> MenCharListHandle <span>extends</span><span> CharListHandle {
    
    </span><span>public</span> <span>function</span> <span>exec</span><span>(){
        </span><span>$this</span>->charlist->addCore("男装"<span>);
        </span><span>$this</span>->charlist->addBlacklist("女"<span>);
    }
}

</span><span>class</span> WomenCharListHandle <span>extends</span><span> CharListHandle{
    </span><span>public</span> <span>function</span> <span>exec</span><span>(){
        </span><span>$this</span>->charlist->addCore("女装"<span>);
        </span><span>$this</span>->charlist->addBlacklist("男"<span>);
    }
}

</span><span>#</span><span> 其他CharList Handle小帅帅完成</span>

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

    </span><span>private</span> <span>static</span>  <span>$charListHandle</span> = <span>array</span><span>(
        </span>"男装"=>"MenCharListHandle",
        "女装"=>"WomenCharListHandle",
        "情侣装"=>"LoversCharListHandle",
        "童装"=>"ChildrenCharListHandle"<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>$matchTitle</span> = <span>$selectorItem</span>->title.<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>$className</span><span>){
            </span><span>if</span>(<span>preg_match</span>("/<span>$matchKey</span>/",<span>$matchTitle</span><span>)){
                </span><span>$handle</span> = self::createCharListHandle(<span>$className</span>,<span>$charlist</span><span>);
                </span><span>$handle</span>-><span>exec</span><span>();
            }
        }
        
        </span><span>//</span><span>do search things       </span>
<span>
    }
    
    </span><span>public</span> <span>static</span> <span>function</span> createCharListHandle(<span>$className</span>,<span>$charlist</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>);
        }
        </span><span>throw</span> <span>new</span> <span>Exception</span>("class not exists",0<span>);
    }
}</span>

小帅帅看了代码后再也按耐不住了，这就是传说中的于老大，还不是抄的我的代码。。。

于老大要是听到小帅帅的想法，会有什么举动呢？

小帅帅没办法继续去研究神功秘籍。