模拟请求数据（先看一下小黄鸡的网页版界面）

我们通过模拟http请求来实现，上面对话抓包如下：

（下图分别是：发送消息的包，接收消息的包）

根据上面的包，模拟发起请求如下

接下来，我们做下与微信的对接，代码如下

看下演示效果

申请小黄鸡接口SimSimi，发音为〝shim-shimee〞，中文翻译：小黄鸡，由韩文simsim（심심）演变而成。 “심심”原意为“无聊”。SimSimi 由ISMaker于2002年建立流行的人工智能对话系统。

接口申请流程：

1. 注册账号2. 激活账号3. 申请7天试用接口（或者付费购买接口，价格30美元10 万次）4. 获得Key

接口分析（如下图）

程序实现

构造Url参数

   $params['key'] = "d4899e2a-7ea8-40ab-a0d2-f258ddd7de15";    $params['lc'] = "ch";    $params['ft'] = "1.0";    $params['text'] = $keyword;        $url = "http://sandbox.api.simsimi.com/request.p?".http_build_query($params);

CURL获取内容

   $ch = curl_init();    curl_setopt($ch, CURLOPT_URL, $url);    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);    $output = curl_exec($ch);    curl_close($ch);

获取回复内容

   $message = json_decode($output,true);    $result = "";    if ($message['result'] == 100){        $result = $message['response'];    }else{        $result = $message['result'].$message['msg'];    }

小黄鸡完整代码simsimi.php

function callSimsimi($keyword) {    $params['key'] = "d4899e2a-7ea8-40ab-a0d2-f258ddd7de15";    $params['lc'] = "ch";    $params['ft'] = "1.0";    $params['text'] = $keyword;        $url = "http://sandbox.api.simsimi.com/request.p?".http_build_query($params);    $ch = curl_init();    curl_setopt($ch, CURLOPT_URL, $url);    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);    $output = curl_exec($ch);    curl_close($ch);    $message = json_decode($output,true);    $result = "";    if ($message['result'] == 100){        $result = $message['response'];    }else{        $result = $message['result']."-".$message['msg'];    }    return $result; }

接入微信公众平台

将官方文件的$contentStr = “Welcome to wechat world!”; 修改为接口调用$contentStr = callSimsimi($keyword);

整段代码如下：

define("TOKEN", "pondbay");

$wechatObj = new wechatCallbackapiTest();

if (isset($_GET['echostr'])) {

$wechatObj->valid();

}else{

$wechatObj->responseMsg();

}

class wechatCallbackapiTest

{

public function valid()

{

$echoStr = $_GET["echostr"];

if($this->checkSignature()){

echo $echoStr;

exit;

}

}

private function checkSignature()

{

$signature = $_GET["signature"];

$timestamp = $_GET["timestamp"];

$nonce = $_GET["nonce"];

$token = TOKEN;

$tmpArr = array($token, $timestamp, $nonce);

sort($tmpArr);

$tmpStr = implode( $tmpArr );

$tmpStr = sha1( $tmpStr );

if( $tmpStr == $signature ){

return true;

}else{

return false;

}

}

public function responseMsg()

{

$postStr = $GLOBALS["HTTP_RAW_POST_DATA"];

if (!empty($postStr)){

$postObj = simplexml_load_string($postStr, 'SimpleXMLElement', LIBXML_NOCDATA);

$RX_TYPE = trim($postObj->MsgType);

switch ($RX_TYPE)

{

case "text":

$resultStr = $this->receiveText($postObj);

break;

case "event":

$resultStr = $this->receiveEvent($postObj);

break;

}

echo $resultStr;

}else {

echo "";

exit;

}

}

private function receiveText($object)

{

$funcFlag = 0;

$keyword = trim($object->Content);

include('simsimi.php');

$contentStr = callSimsimi($keyword);

$resultStr = $this->transmitText($object, $contentStr, $funcFlag);

return $resultStr;

}

private function receiveEvent($object)

{

$contentStr = "";

switch ($object->Event)

{

case "subscribe":

$contentStr = "欢迎关注方倍工作室\n小黄鸡为您服务！";

}

$resultStr = $this->transmitText($object, $contentStr);

return $resultStr;

}

private function transmitText($object, $content, $flag = 0)

{

$textTpl = "<xml>

<ToUserName><![CDATA[%s]]></ToUserName>

<FromUserName><![CDATA[%s]]></FromUserName>

<CreateTime>%s</CreateTime>

<MsgType><![CDATA[text]]></MsgType>

<Content><![CDATA[%s]]></Content>

<FuncFlag>%d</FuncFlag>

</xml>";

$resultStr = sprintf($textTpl, $object->FromUserName, $object->ToUserName, time(), $content, $flag);

return $resultStr;

}

}

至此，这种方式开发聊天机器人，也OK了