通过WebService,我们可以调用部署在其它地方的程序,而不用关心被调用的程序是在什么平台用什么语言编写的。这里我们使用php调用。
在php4时代调用WebService大部分使用的nusoap,到了php5已经有了自己的soap扩展,我们只需要在php的配置文件php.ini开启扩展
extension = php_soap.dll
实例程序
定义一个实现业务逻辑的类文件basic.php
//测试定义公开的类 class Mywsdl { private $nombre = ''; public function __construct($name = 'World') { $this->name = $name; } public function greet($name = '') { $name = $name?$name:$this->name; return 'Hello '.$name.'.'; } public function serverTimestamp() { return time(); } public function myfunc($a=''){ $arr = array('a'=>$a,'b'=>$a,'c'=>$a); return json_encode($arr); } }
一个类,返回一个字符串。假设这个程序在服务器A上面,如果想在服务器B上面调用这个程序怎么办?首先我们先要将这个类变成Web的服务,这就需要用到前面PHP的soap扩展了。
创建服务server.php,需要使用到的SoapDiscovery.class.php文件
require_once('basic.php'); //define('WSDL_URL','hello.wsdl'); //定义WSDL文件路径 ini_set('soap.wsdl_cache_enabled','0'); //关闭WSDL缓存 //WSDL文件不存在时自动创建 if(!file_exists('Mywsdl.wsdl')) { require_once 'SoapDiscovery.class.php'; $disco = new SoapDiscovery('Mywsdl','www.zhuoqu.com'); $str = $disco->getWSDL(); } //SOAP开启并接收Client传入的参数响应 $server = new SoapServer('Mywsdl.wsdl',array('soap_version' => SOAP_1_2)); $server->setClass('Mywsdl'); $server->handle();
OK,一个web服务搭建好了,上面的例子中,我们创建了一个SoapServer对象,人后利用setClass函数将我们刚才编写的basic类set进去,最后 handle()。现在如果用浏览器访问这个文件,会出现警告,这是正常的,因为这个文件不是用浏览器访问的,而是用另一个程序访问的。当一个客户端程序访问我们的webService时,运行到handle() 时会对客户端的输入进行处理,并输出结果给客户端,这里需要注意一下,不要在handle() 之前和之后输出任何东西,否者客户端会处理不了。
现在,编写客户端访问我们的webservice
$client = new SoapClient("http://127.0.0.1/s.php?wsdl"); try { $result = $client->myfunc('789'); var_dump(json_decode($result)); echo "The answer is result"; } catch (SoapFault $e){ echo "Error Message: {$e->getMessage()}"; }
这样我们就可以通过访问客户端文件来获取我们需要的结果了
SoapDiscovery.class.php文件
<?php /** * Copyright (c) 2005, Braulio Jos?Solano Rojas * All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, are * permitted provided that the following conditions are met: * * Redistributions of source code must retain the above copyright notice, this list of * conditions and the following disclaimer. * Redistributions in binary form must reproduce the above copyright notice, this list of * conditions and the following disclaimer in the documentation and/or other materials * provided with the distribution. * Neither the name of the Solsoft de Costa Rica S.A. nor the names of its contributors may * be used to endorse or promote products derived from this software without specific * prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * * @version $Id$ * @copyright 2005 */ /** * SoapDiscovery Class that provides Web Service Definition Language (WSDL). * * @package SoapDiscovery * @author Braulio Jos?Solano Rojas * @copyright Copyright (c) 2005 Braulio Jos?Solano Rojas * @version $Id$ * @access public **/ class SoapDiscovery { private $class_name = ''; private $service_name = ''; /** * SoapDiscovery::__construct() SoapDiscovery class Constructor. * * @param string $class_name * @param string $service_name **/ public function __construct($class_name = '', $service_name = '') { $this->class_name = $class_name; $this->service_name = $service_name; } /** * SoapDiscovery::getWSDL() Returns the WSDL of a class if the class is instantiable. * * @return string **/ public function getWSDL() { if (empty($this->service_name)) { throw new Exception('No service name.'); } $headerWSDL = "<?xml version="1.0" ?> "; $headerWSDL.= "<definitions name="$this->service_name" targetNamespace="urn:$this->service_name" xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:tns="urn:$this->service_name" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" xmlns="http://schemas.xmlsoap.org/wsdl/"> "; $headerWSDL.= "<types xmlns="http://schemas.xmlsoap.org/wsdl/" /> "; if (empty($this->class_name)) { throw new Exception('No class name.'); } $class = new ReflectionClass($this->class_name); if (!$class->isInstantiable()) { throw new Exception('Class is not instantiable.'); } $methods = $class->getMethods(); $portTypeWSDL = '<portType name="'.$this->service_name.'Port">'; $bindingWSDL = '<binding name="'.$this->service_name.'Binding" type="tns:'.$this->service_name."Port"> <soap:binding style="rpc" transport="http://schemas.xmlsoap.org/soap/http" /> "; $serviceWSDL = '<service name="'.$this->service_name.""> <documentation /> <port name="".$this->service_name.'Port" binding="tns:'.$this->service_name."Binding"><soap:address location="http://".$_SERVER['SERVER_NAME'].':'.$_SERVER['SERVER_PORT'].$_SERVER['PHP_SELF']."" /> </port> </service> "; $messageWSDL = ''; foreach ($methods as $method) { if ($method->isPublic() && !$method->isConstructor()) { $portTypeWSDL.= '<operation name="'.$method->getName().""> ".'<input message="tns:'.$method->getName()."Request" /> <output message="tns:".$method->getName()."Response" /> </operation> "; $bindingWSDL.= '<operation name="'.$method->getName().""> ".'<soap:operation soapAction="urn:'.$this->service_name.'#'.$this->class_name.'#'.$method->getName()."" /> <input><soap:body use="encoded" namespace="urn:$this->service_name" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" /> </input> <output> <soap:body use="encoded" namespace="urn:$this->service_name" encodingStyle="http://schemas.xmlsoap.org/soap/encoding/" /> </output> </operation> "; $messageWSDL.= '<message name="'.$method->getName()."Request"> "; $parameters = $method->getParameters(); foreach ($parameters as $parameter) { $messageWSDL.= '<part name="'.$parameter->getName()."" type="xsd:string" /> "; } $messageWSDL.= "</message> "; $messageWSDL.= '<message name="'.$method->getName()."Response"> "; $messageWSDL.= '<part name="'.$method->getName()."" type="xsd:string" /> "; $messageWSDL.= "</message> "; } } $portTypeWSDL.= "</portType> "; $bindingWSDL.= "</binding> "; /** * 2017-01-16 17:35:12 * author SUR */ $file = fopen($this->class_name.'.wsdl','w'); fwrite($file,sprintf('%s%s%s%s%s%s', $headerWSDL, $portTypeWSDL, $bindingWSDL, $serviceWSDL, $messageWSDL, '</definitions>')) ; fclose($file); } /** * SoapDiscovery::getDiscovery() Returns discovery of WSDL. * * @return string **/ public function getDiscovery() { return "<?xml version="1.0" ?> <disco:discovery xmlns:disco="http://schemas.xmlsoap.org/disco/" xmlns:scl="http://schemas.xmlsoap.org/disco/scl/"> <scl:contractRef ref="http://".$_SERVER['SERVER_NAME'].':'.$_SERVER['SERVER_PORT'].$_SERVER['PHP_SELF']."?wsdl" /> </disco:discovery>"; } } ?>
来源 http://www.open-open.com/doc/view/fb5af38feff2470da22458e31c2087b1
http://www.360doc.com/content/11/0212/16/15103_92457365.shtml