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PHP SOAP WSDL模式在方法调用上返回Null

debugcn 发表于 Dev
6
斯嘉莉

我一直试图在PHP中学习SOAP，并且非wsdl模式工作得很好。我将它们包括在内是为了为寻求学习的人们提供信息。

公开library.php的类

<?php
  class Library {
    public function getDwarves(){
      $dwarves = array("Bashful","Doc","Dopey");
        return $dwarves;
      }
      public function greetUser($name){
         return array("message"=>"hello,".$name);
      }
    }
 ?>

非WSDL客户端

<?php
try{
  $options = array("location" => "http://192.168.1.20/ws/server.php" , "uri" => "http://192.168.1.20/ws");
 $client=new SoapClient(null,$options);
  $dwarves = $client->getDwarves();
  echo nl2br("Result of getDwarves:\n"); 
  var_dump($dwarves);
  echo nl2br("\n\n");

  $greeting = $client->greetUser("Fairmutex");
  echo nl2br("Result of greetUser:\n"); 
  var_dump($greeting);
  echo nl2br("\n\n");

}catch(SoapFault $e){

 var_dump($e);
 echo  "<br/>".$e->getMessage()."<br/>"; 

}
?>

非wsdl服务器

<?php
   require('library.php');
   $options = array("uri" => "http://192.168.1.20");
   $server = new SoapServer(null,$options);
   $server->setClass('Library');
   $server->handle();
?>

但是，当将WSDL引入图片时，服务器将返回NULL作为方法调用的结果。谁能帮助我确定我做错了什么？

server.php

<?php
   require('library.php');
   $server = new SoapServer("wsdl");
   $server->setClass('Library');
   $server->handle();
?>

client.php

<?php
try{

  $client=new SoapClient("http://192.168.1.20/ws/wsdl",array( "trace" => 1 ) );
  $dwarves = $client->getDwarves();
  echo nl2br("Result of getDwarves:\n"); 
  var_dump($dwarves);
  echo nl2br("\n\n");

  $greeting = $client->greetUser("Fairmutex");
  echo nl2br("Result of greetUser:\n"); 
  var_dump($greeting);
  echo nl2br("\n\n");

}catch(SoapFault $e){

 var_dump($e);
 echo  "<br/>".$e->getMessage()."<br/>"; 

}
?>

带有调试信息的client.php

    <?php
try{
$client=new SoapClient("http://192.168.1.20/ws/wsdl",array( "trace" => 1 ) );
$dwarves = $client->getDwarves();

 echo nl2br("GetFunctions:\n");  var_dump($client->__getFunctions()); echo nl2br("\n\n");
 echo nl2br("GetTypes:\n");  var_dump($client->__getTypes()); echo nl2br("\n\n");
 echo nl2br("Request Header:\n" . htmlentities(str_ireplace('><', ">\n<",    $client->__getLastRequestHeaders())) . "\n");
 echo nl2br("REQUEST:\n" . htmlentities(str_ireplace('><', ">\n<", $client->__getLastRequest())) . "\n");
  echo nl2br("Response Header:\n" . htmlentities(str_ireplace('><', ">\n<", $client->__getLastResponseHeaders())) . "\n");
echo nl2br("Response:\n" . htmlentities(str_ireplace('><', ">\n<", $client->__getLastResponse())) . "\n");

echo nl2br("Result of getDwarves:\n"); 
 var_dump($dwarves);
 echo nl2br("\n\n");

 $greeting = $client->greetUser("Fairmutex");
 echo nl2br("REQUEST:\n" . htmlentities(str_ireplace('><', ">\n<", $client->__getLastRequest())) . "\n");
   echo nl2br("Response Header:\n" . htmlentities(str_ireplace('><', ">\n<", $client->__getLastResponseHeaders())) . "\n");
echo nl2br("Response:\n" . htmlentities(str_ireplace('><', ">\n<", $client->__getLastResponse())) . "\n");
echo nl2br("Result of greetUser:\n"); 
 var_dump($greeting);
 echo nl2br("\n\n");
}catch(SoapFault $e){
 var_dump($e);
 echo  "<br/>".$e->getMessage()."<br/>"; 
}
?>

wsdl

<?xml version="1.0" encoding="UTF-8"?>
<definitions xmlns="http://schemas.xmlsoap.org/wsdl/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:soapenc="http://schemas.xmlsoap.org/soap/encoding/" xmlns:typens="urn:LibraryWSDL" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="LibraryWSDL" targetNamespace="urn:LibraryWSDL">
   <message name="getDwarves" />
   <message name="getDwarvesResponse" />
   <message name="greetUser">
      <part name="name" type="xsd:anyType" />
   </message>
   <message name="greetUserResponse" />
   <portType name="LibraryPortType">
      <operation name="getDwarves">
         <input message="typens:getDwarves" />
         <output message="typens:getDwarvesResponse" />
      </operation>
      <operation name="greetUser">
         <input message="typens:greetUser" />
         <output message="typens:greetUserResponse" />
      </operation>
   </portType>
   <binding name="LibraryBinding" type="typens:LibraryPortType">
      <soap:binding style="rpc" transport="http://schemas.xmlsoap.org/soap/http" />
      <operation name="getDwarves">
         <soap:operation soapAction="urn:LibraryAction" />
         <input>
            <soap:body namespace="urn:LibraryWSDL" use="encoded" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" />
         </input>
         <output>
            <soap:body namespace="urn:LibraryWSDL" use="encoded" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" />
         </output>
      </operation>
      <operation name="greetUser">
         <soap:operation soapAction="urn:LibraryAction" />
         <input>
            <soap:body namespace="urn:LibraryWSDL" use="encoded" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" />
         </input>
         <output>
            <soap:body namespace="urn:LibraryWSDL" use="encoded" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" />
         </output>
      </operation>
   </binding>
   <service name="LibraryWSDLService">
      <port name="LibraryPort" binding="typens:LibraryBinding">
         <soap:address location="http://192.168.1.20/ws/server.php" />
      </port>
   </service>
</definitions>

路径：

http://192.168.1.20/ws/wsdl
http://192.168.1.20/ws/server.php
http://192.168.1.20/ws/client.php

调试信息客户端的结果

GetFunctions:
array(2) { [0]=> string(17) "void getDwarves()" [1]=> string(29) "void greetUser(anyType $name)" }

GetTypes:
array(0) { }

Request Header:
POST /ws/server.php HTTP/1.1
Host: 192.168.1.20
Connection: Keep-Alive
User-Agent: PHP-SOAP/5.3.3-7+squeeze14
Content-Type: text/xml; charset=utf-8
SOAPAction: "urn:LibraryAction"
Content-Length: 385


REQUEST:
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="urn:LibraryWSDL" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
<SOAP-ENV:Body>
<ns1:getDwarves/>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>

Response Header:
HTTP/1.1 200 OK
Date: Sat, 01 Mar 2014 00:45:39 GMT
Server: Apache/2.2.16 (Debian)
X-Powered-By: PHP/5.3.3-7+squeeze14
Content-Length: 393
Vary: Accept-Encoding
Keep-Alive: timeout=15, max=100
Connection: Keep-Alive
Content-Type: text/xml; charset=utf-8

Response:
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="urn:LibraryWSDL" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
<SOAP-ENV:Body>
<ns1:getDwarvesResponse/>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>

Result of getDwarves:
NULL

REQUEST:
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="urn:LibraryWSDL" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
<SOAP-ENV:Body>
<ns1:greetUser>
<name xsi:type="xsd:string">Fairmutex</name>
</ns1:greetUser>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>

Response Header:
HTTP/1.1 200 OK
Date: Sat, 01 Mar 2014 00:45:39 GMT
Server: Apache/2.2.16 (Debian)
X-Powered-By: PHP/5.3.3-7+squeeze14
Content-Length: 392
Vary: Accept-Encoding
Keep-Alive: timeout=15, max=99
Connection: Keep-Alive
Content-Type: text/xml; charset=utf-8

Response:
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="urn:LibraryWSDL" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/">
<SOAP-ENV:Body>
<ns1:greetUserResponse/>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>

Result of greetUser:
NULL
欧萨罗·加布里埃尔（Osaro Gabriel）

由于您可能会遇到的大多数错误都是模棱两可的，因此很难调试，因此PHP SOAP的使用可能会非常令人沮丧。

在WSDL模式下使用PHP SOAP时，必须注意几件事。必须在WSDL文件（“ types”标记或“ message”标记中）和PHP代码（作为类定义）中明确定义PHP函数的输入和输出参数。

您的实现缺少这两个要求。您的调试输出信息（$ client-> __ getFunctions（））也指出了错误，因为您会注意到方法getDwarves（）和greetUser（）的返回“类型”均为“ void”。这意味着，即使您的PHP函数定义返回值，调用这些方法中的任何一个时，PHP SOAP都将返回null（无效）。

有关更多信息，请查看有关以WSDL模式创建PHP SOAP服务器的简单教程。

本文收集自互联网，转载请注明来源。

如有侵权，请联系[email protected] 删除。

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