最近项目需要，要远程登录别人的系统，并且在对方的系统中提交表单，所以写了一个类。

namespace app\api\controller;

use think\Db;

use think\Controller;

use think\facade\Env;

use think\facade\Request;

class Offline extends Controller

{

//域名

public $baseUrl = 'http://localhost:8080';

//登录错误返回的链接

public $loginErrorUrl = '/login';

//登录验证

public $loginUrl = '/check';

//登录成功跳转

public $loginSuccessUrl = '/loginSuccess';

//提交表单

public $orderUrl = '/save';

//提交表单返回页面URL

public $formUrl = '/proposal';

//下载URL

public $downloadUrl             = '/downloads';

//记录登录返回的cookie

public $cookieFile;

//日志

public $logFile;

protected function initialize()

{

parent::initialize();

$this->cookieFile            = Env::get('root_path') .'runtime/success_cookie.txt';

$this->logFile               = Env::get('root_path') .'runtime/offline_log.txt';

}

/**

* @function    online

* @intro        模拟form提交表单

* @return  string

*/

public function online()

{

$ch                   = curl_init($this->baseUrl.$this->formUrl);

curl_setopt($ch,CURLOPT_COOKIEFILE, $this->cookieFile); //同时发送Cookie

curl_setopt($ch,CURLOPT_RETURNTRANSFER, 1);

$headers                    = curl_getinfo($ch);

curl_close($ch);

//通过返回的header里的url来判断登录状态

if(strpos($this->loginErrorUrl, $headers['url'])){

return 'login_fail';

}

//跟进传过来的ID去查询订单内容

$orderId                             = input('id');

//订单信息

$order                                          = db('order')->where(['id'=>$orderId])->find();

$form     = [];

$form['name']                             = $order['title'];

$form['type']                             = 1;

//提交表单

$headersandcontent                              = $this->curlPostForm($this->baseUrl.$this->orderUrl, $this->cookieFile, $form);

$headers = $headersandcontent['header'];

$content = strip_tags($headersandcontent['content']);//过滤html标签

$content = preg_replace("/(.*?)/si","",$content);//过滤script标签

$content = preg_replace("/\s+/", " ", $content);//过滤回车

$content = str_replace(' ', '', $content);//过滤空格

$this->log(json_encode($headers));

$this->log($content);

//对返回的内容进行判断

if(strpos($headers['url'], $this->orderUrl)){

return 'success';

}else{

return 'fail';

}

}

//下载PDF

public function downloadpdf($no){

$url    = $this->baseUrl.$this->downloadUrl.'?no='.$no;

$save_path                                  = Env::get('root_path').'public/uploads/pdf/';

$filename                                   = $no.'.pdf';

$content                                    = $this->curlDownloadFile($url,$this->cookieFile);

// 保存文件到制定路径

$length = file_put_contents($save_path.$filename, $content);

if($length == 0){

unlink($save_path.$filename);

if(!empty($content)){

$fp2 = @fopen($save_path . $filename, 'a');

fwrite($fp2, $content);

fclose($fp2);

}

}

return true;

}

//模拟登录

public function login(){

$arr['username']  = '11111';

$arr['password']  = 'aaaa';

//模拟登录，抓取返回值里的URL

$headers            = $this->curlPost($this->baseUrl.$this->loginUrl, $this->cookieFile, $arr);

//登录成功

if(strpos($headers['url'], $this->loginSuccessUrl)){

return 'success';

}else{

return 'fail';

}

}

//记录日志

public function log($str){

$fp = fopen($this->logFile, 'a+');

fwrite($fp, date("Y-m-d H:i:s").' '.$str." \r\n");

fclose($fp);

}

/**

* 模拟登录

* @param string $url 提交到的地址

* @param string $cookie 保存cookie的文件

* @param string $arr 提交时要post的参数

* @return string $headers 返回的内容

*/

public function curlPost($url, $cookie, $arr=''){

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, $url);

curl_setopt($ch, CURLOPT_HEADER, 0);

curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

if(!empty($arr)){

curl_setopt($ch, CURLOPT_POST, 1);

curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($arr)); //提交查询信息

}

//若给定url自动跳转到新的url,有了下面参数可自动获取新url内容：302跳转

curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);

//设置cURL允许执行的最长秒数。

curl_setopt($ch, CURLOPT_TIMEOUT, 300);

curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36');

curl_setopt($ch, CURLOPT_REFERER, $url);

curl_setopt($ch, CURLOPT_COOKIEJAR, $cookie); //把返回来的cookie信息保存在$cookie文件中

curl_setopt($ch, CURLOPT_ENCODING, 'gzip, deflate');

$content = curl_exec($ch);

//获取请求返回码，请求成功返回200

$code = curl_getinfo($ch,CURLINFO_HTTP_CODE);

//获取一个cURL连接资源句柄的信息。

//$headers 中包含跳转的url路径

$headers = curl_getinfo($ch);

curl_close($ch);

return $headers;

}

/**

* 提交表单

* @param string $url 提交到的地址

* @param string $cookie 保存cookie的文件

* @param string $arr 提交时要post的参数

* @return string $headers 返回的内容

*/

public function curlPostForm($url, $cookie, $arr=''){

$headers = array('Content-Type: application/x-www-form-urlencoded');

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, $url);

curl_setopt($ch, CURLOPT_HEADER, 0);

curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie); //同时发送Cookie

curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

curl_setopt($ch, CURLOPT_POST, 1);

curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($arr)); //提交查询信息

//若给定url自动跳转到新的url,有了下面参数可自动获取新url内容：302跳转

curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);

//设置cURL允许执行的最长秒数。

curl_setopt($ch, CURLOPT_TIMEOUT, 300);

curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36');

curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

$headers    = curl_getinfo($ch);

$content    = curl_exec($ch);

curl_close($ch);

return ['header'=>$headers,'content'=>$content];

}

/**

* 下载

* @param string $url 地址

* @param string $cookie 保存cookie的文件

* @return string $content 返回的内容

*/

public function curlDownloadFile($url, $cookie){

$headers = array('Content-Type: application/x-www-form-urlencoded');

$ch = curl_init();

curl_setopt($ch, CURLOPT_URL, $url);

curl_setopt($ch, CURLOPT_HEADER, 0);

curl_setopt($ch, CURLOPT_COOKIEFILE, $cookie); //同时发送Cookie

curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

//设置cURL允许执行的最长秒数。

curl_setopt($ch, CURLOPT_TIMEOUT, 300);

curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36');

curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);

$content    = curl_exec($ch);

curl_close($ch);

return $content;

}

}

这里的返回值基本都是html内容所以我这边是判断的返回值里的URL是不是匹配，可以根据需要调整。