PHP uses curl to simulate post request to submit xml

PHP uses curl to simulate post request submission xml (the request is the interface on the Java server)
But using httprequest to request in jsp can be successful
Post data is processed in this way in JAVA. Similarly, I still can’t solve it after using asXML() in PHP
Element r=rootEle.element("hmac");
r.setText(signMessage);
result.put("xml",xml);
Document.setXMLEncoding("GBK");
System.out.println("Complete xml request message:"+document.asXML());


Below is php
Public function test(){
$testHost = 'http://127.0.0.1:8080'
$data=' George< /to>                          $response=$this->sendPost($textHost,$data);
                           echo ($response);
                                                   }
         protected function sendPost($url,$data){
                $curl = curl_init();
​ ​ ​ ​ curl_setopt($curl, CURLOPT_URL, $url);
​ ​ ​ ​ curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
​ ​ ​ ​ curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
                  if (!empty($data)){
                      curl_setopt($curl, CURLOPT_POST, 1);
                    curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
              }
​ ​ ​ ​ curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
                $output = curl_exec($curl);
                  curl_close($curl);
                    return $output;
        }