最近有项目需求给微信公众号上增加了天气预报功能,使用百度提供的车联网api v3.0中的天气查询功能实现.先上一张最终效果图:
项目需求：有连接好的微信平台,有百度注册帐号,需要在百度lbs开放云平台,添加应用,获取ak代码，php代码编辑器,如editplus等
下面详细介绍下开发步骤：
第一步：准备工作
登录微信公众平台,检查服务器配置是否已启用,url(服务器地址) 是否已配置token(令牌),与自己写的微信入口文件中的token(令牌一致),如下图:然后点击提交,只至网页上提示绿色背景的提交成功信息,则完成本步骤的操作
第二步：微信天气预报数据源准备
用已注册好的百度帐号,登录百度lbs云平台,添加一个应用,获取访问应用ak，及了解车联api v3.0,天气查询功能相应的接口说明文件,以按需调用需要的天气信息.
第三步：微信公众平台，接口文件编写 jiekou.php
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<?php
/*
无忧电脑技巧网 微信公众号功能源码
copyright 2015 all rights reserved
*/
define("token", "weixin2015");
$wechatobj = new wechatcallbackapitest();
if (!isset($_get['echostr'])) {
$wechatobj->responsemsg();
}else{
$wechatobj->valid();
}
class wechatcallbackapitest
{
//验证签名
public function valid()
{
$echostr = $_get["echostr"];
$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){
echo $echostr;
exit;
}
}
public function responsemsg()
{
// $poststr = $globals["http_raw_post_data"];
$poststr = file_get_contents("php://input");
if (!empty($poststr)){
$this->logger("r ".$poststr);
$postobj = simplexml_load_string($poststr, 'simplexmlelement', libxml_nocdata);
$rx_type = trim($postobj->msgtype);
$result = "";
switch ($rx_type)
{
case "event":
$result = $this->receiveevent($postobj);
break;
case "text":
$result = $this->receivetext($postobj);
break;
}
$this->logger("t ".$result);
echo $result;
}else {
echo "";
exit;
}
}
private function receiveevent($object)
{
switch ($object->event)
{
case "subscribe":
$content = "欢迎关注无忧电脑技巧网 ";
break;
}
$result = $this->transmittext($object, $content);
return $result;
}
private function receivetext($object)
{
$keyword = trim($object->content); //获得用户输入的信息
//判断天气
if(!empty( $keyword )){ //!empty 函数,判断 $keyword获得的值是否为空
$city = mb_substr($keyword, 0, 2, 'utf-8'); //取用户输入内容前两个字符,如"黄冈天气" 最终取值"黄冈"
include("weather.php"); //调用天气接口文件
$content = getweatherinfo($city); //执行天气接口文件中的 getweatherinfo方法.查询 黄冈天气.
} else{
$content = date("y-m-d h:i:s",time())."\n技术支持 无忧电脑技巧网\nwww.51pcjq.com"; //发送其它内容默认回复的内容.
}
if(is_array($content)){
if (isset($content[0]['picurl'])){
$result = $this->transmitnews($object, $content);
}else if (isset($content['musicurl'])){
$result = $this->transmitmusic($object, $content);
}
}else{
$result = $this->transmittext($object, $content);
}
return $result;
}
private function transmittext($object, $content)
{
if (!isset($content) || empty($content)){
return "";
}
$texttpl = "<xml>
<tousername><![cdata[%s]]></tousername>
<fromusername><![cdata[%s]]></fromusername>
<createtime>%s</createtime>
<msgtype><![cdata[text]]></msgtype>
<content><![cdata[%s]]></content>
</xml>";
$result = sprintf($texttpl, $object->fromusername, $object->tousername, time(), $content);
return $result;
}
private function transmitnews($object, $newsarray)
{
if(!is_array($newsarray)){
return "";
}
$itemtpl = " <item>
<title><![cdata[%s]]></title>
<description><![cdata[%s]]></description>
<picurl><![cdata[%s]]></picurl>
<url><![cdata[%s]]></url>
</item>
";
$item_str = "";
foreach ($newsarray as $item){
$item_str .= sprintf($itemtpl, $item['title'], $item['description'], $item['picurl'], $item['url']);
}
$newstpl = "<xml>
<tousername><![cdata[%s]]></tousername>
<fromusername><![cdata[%s]]></fromusername>
<createtime>%s</createtime>
<msgtype><![cdata[news]]></msgtype>
<content><![cdata[]]></content>
<articlecount>%s</articlecount>
<articles>
$item_str</articles>
</xml>";
$result = sprintf($newstpl, $object->fromusername, $object->tousername, time(), count($newsarray));
return $result;
}
private function logger($log_content)
{
}
}
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第四步:使用百度车联api v3.0接口,及访问应用ak码,编号微信天气接口源码:
weatger.php
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<?php
function getweatherinfo($cityname){
if ($cityname == "" || (strstr($cityname, "+"))){
return "发送天气+城市，例如'天气深圳'"; }//用户查询天气,回复关键词 规则
$url = "http://api.map.baidu.com/telematics/v3/weather?location=".urlencode($cityname)."&output=json&ak=自已申请的百度车联api ak代码";//构建通过百度车联api v3.0查询天气url链接
$ch = curl_init();//初始化会话 curl_setopt($ch, curlopt_url, $url);//设置会话参数 curl_setopt($ch, curlopt_returntransfer, 1);//设置会话参数 $output = curl_exec($ch);//执行curl会话
curl_close($ch);//关闭curl会话
$result = json_decode($output, true);//函数json_decode() 的功能时将json数据格式转换为数组。
if ($result["error"] != 0){
return $result["status"]; }
$curhour = (int)date('h',time());
$weather = $result["results"][0];//按照微信公众号开发文档,组建设多图文回复信息
$weatherarray[] = array("title" => $weather['currentcity']."当前天气:"."温度:".$weather['weather_data'][0]['temperature'].",".$weather['weather_data'][0]['weather'].","."风力:".$weather['weather_data'][0]['wind'].".", "description" =>"", "picurl" =>"http://weixin.51pcjq.com/img/weather_bg.jpg", "url" =>"");
for ($i = 0; $i < count($weather["weather_data"]); $i++) {
$weatherarray[] = array("title"=>
$weather["weather_data"][$i]["date"]."\n".
$weather["weather_data"][$i]["weather"]." ".
$weather["weather_data"][$i]["wind"]." ".
$weather["weather_data"][$i]["temperature"]."",
"description"=>"",
"picurl"=>(($curhour >= 6)
&& ($curhour < 18))?$weather["weather_data"][$i]["daypictureurl"]:$weather["weather_data"][$i]["nightpictureurl"], "url"=>"");
}
return $weatherarray;}?>
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注意事项
微信公众平台 token 与自己编写的微信接口文件中的 token 的值必须保持一致
编写php代码,需使用专业的php编辑工具,如editplus,dreamweaver等
上述天气接口文件中,百度车联api ak代码已换成 "自已申请的百度车联api ak代码:请申请好后,自行填入
如要不明白的地方,可以关注我的百度空间.留言和我联系!
微信天气预报开发最新代码：
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<meta http-equiv="content-type" content="text/html; charset=utf" />
<?php
header("content-type:text/html;charset=utf-");
date_default_timezone_set("prc");
/**
* 最开始用的是微信提供的demo老是不成功，用了这个网上下载的才成功
*/
//define your token
define("token", "djjc");
$wechatobj = new wechatcallbackapitest();
//微信接入操作，成功接入了直接注释了就行了
$wechatobj->responsemsg();
//$wechatobj->valid();
class wechatcallbackapitest
{
/*public function valid()
{
$echostr = $_get["echostr"];
//valid signature , option
if($this->checksignature()){
echo $echostr;
exit;
}
}*/
public function responsemsg()
{
//get post data, may be due to the different environments
$poststr = $globals["http_raw_post_data"];
//extract post data
if (!empty($poststr)){
$postobj = simplexml_load_string($poststr, ‘simplexmlelement‘, libxml_nocdata);
$rx_type = trim($postobj->msgtype);
switch($rx_type)
{
case "text":
$resultstr = $this->handletext($postobj);
break;
case "event":
$resultstr = $this->handleevent($postobj);
break;
default:
$resultstr = "unknow msg type: ".$rx_type;
break;
}
echo $resultstr;
}else {
echo "";
exit;
}
}
//测试文字回复
public function handletext($postobj)
{
$fromusername = $postobj->fromusername;
$tousername = $postobj->tousername;
$keyword = trim($postobj->content);
$time = time();
$texttpl = "<xml>
<tousername><![cdata[%s]]></tousername>
<fromusername><![cdata[%s]]></fromusername>
<createtime>%s</createtime>
<msgtype><![cdata[%s]]></msgtype>
<content><![cdata[%s]]></content>
<funcflag></funcflag>
</xml>";
if(!empty( $keyword ))
{
$msgtype = "text";
switch($keyword){
case "你好":
$contentstr = "你好!";
break;
case "你叫什么名字":
$contentstr = "我是顶尖机器人";
break;
//判断是否为天气
case $keywords+"天气";
$str = mb_substr($keyword,-,,"utf-");
$str_key = mb_substr($keyword,,-,"utf-");
if($str=="天气"){
$data = $this->weather($str_key)->showapi_res_body;
$data=‘[今天白天]‘.$data->f->day_weather."\n";
$data=‘[今天夜间]‘.$data->f->night_weather."\n";
$data=‘[明天白天]‘.$data->f->day_weather."\n";
$data=‘[明天夜间]‘.$data->f->night_weather."\n";
$contentstr = $data.$data.$data.$data;
}
break;
default:
$contentstr = "听不懂您在讲什么";
break;
}
$resultstr = sprintf($texttpl, $fromusername, $tousername, $time, $msgtype, $contentstr);
echo $resultstr;
}else{
echo "input something...";
}
}
public function handleevent($object)
{
$contentstr = "";
switch ($object->event)
{
case "subscribe":
$contentstr = "感谢您关注顶尖教程网，在这里您将得到海量免费学习资源！";
break;
default :
$contentstr = "unknow event: ".$object->event;
break;
}
$resultstr = $this->responsetext($object, $contentstr);
return $resultstr;
}
public function responsetext($object, $content)
{
$texttpl = "<xml>
<tousername><![cdata[%s]]></tousername>
<fromusername><![cdata[%s]]></fromusername>
<createtime>%s</createtime>
<msgtype><![cdata[text]]></msgtype>
<content><![cdata[%s]]></content>
<funcflag></funcflag>
</xml>";
$resultstr = sprintf($texttpl, $object->fromusername, $object->tousername, time(), $content, $flag);
return $resultstr;
}
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 = sha( $tmpstr );
if( $tmpstr == $signature ){
return true;
}else{
return false;
}
}
//天气预报 此处汉字需要处理，想了很多办法才没乱码
private function weather($k){
$n=urlencode($k);
$showapi_appid = ‘‘; //去相关网站申请就行
$showapi_sign = ‘deafcacefdea‘;
$showapi_timestamp = date(‘ymdhis‘);
$areaid=‘‘;
$paramarr = ‘‘;
$needhourdata=‘‘;
$url = iconv(‘gbk‘,‘utf-‘,‘http://route.showapi.com/-?‘.‘area=‘.$n.‘&areaid=&needhourdata=&needindex=&needmoreday=&showapi_appid=‘.$showapi_appid.‘&showapi_timestamp=‘.$showapi_timestamp.‘&showapi_sign=‘.$showapi_sign);
$result = file_get_contents($url);
$result = json_decode($result);
return $result;
}
}
?>
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