php webservice详解编程语言

Web service是一个平台独立的,低耦合的,自包含的、基于可编程的web的应用程序,可使用开放的XML(标准通用标记语言下的一个子集)标准来描述、发布、发现、协调和配置这些应用程序,用于开发分布式的互操作的应用程序

Web Services

   (1)基础XML + HTTP

  (2)包括客户端和服务端

  (3)主要元素:SOAP (简易对象访问协议),UDDI (通用描述、发现及整合),WSDL (Web services 描述语言)

需要建一个.wsdl文件,php实现方式

  (1)直接用zend studio工具生成

  (2)根据SoapDiscovery.class.php自动生成wsdl文件

1.php.ini文件,支持soap

extension=php_soap.dll

2.创建webservice目录

3.下载SoapDiscovery.class.php文件,放到webservice中

4.创建api.php(服务端类文件)

class api 
{ 
    public function Hello() 
    { 
        return 'hello good'; 
    } 
    public function test($aa) 
    { 
        return $aa; 
    } 
    public function sum($a = 0, $b = 1) 
    { 
        return $a + $b; 
    } 
    public function power($a = 0) 
    { 
        return pow($a,2); 
    } 
}

5.新建creat_wsdl.php(生成wsdl文件的执行程序)

define('WSDL_URL','api.wsdl');        //定义WSDL文件路径 
ini_set('soap.wsdl_cache_enabled','0');    //关闭WSDL缓存 
include_once 'api.php'; 
include_once 'SoapDiscovery.class.php'; 
$wsdl = new SoapDiscovery('api', 'service'); //第一参数为类名,也是生成wsdl的文件名api.wsdl,第二个参数是服务的名字可以随便写 
$str = $wsdl->getWSDL(); 
file_put_contents(WSDL_URL,$str);

运行文件http://127.0.0.1/webservice/creat_wsdl.php

在webservice下生成文件api.wsdl

  说明:

    任何一个webservice都需要和一个实现类绑定的

    也就是调用的wsdl文件真正作用的就是实现类中的方法

6.测试

(1)修改api.php

class api 
{ 
    public function Hello() 
    { 
        return 'hello good'; 
    } 
    public function test($aa) 
    { 
        return $aa; 
    } 
    public function sum($a = 0, $b = 1) 
    { 
        return $a + $b; 
    } 
    public function power($a = 0) 
    { 
        return pow($a,2); 
    } 
} 
$server = new SoapServer('api.wsdl', array('soap_version' => SOAP_1_2)); ##此处的api.wsdl文件是上面生成的 
$server->setClass("api"); //注册Service类的所有方法 
$server->handle();

添加的代码的作用是:

  注册api类文件中的所有方法

(2)新建测试文件test.php(客户端)

$x = new SoapClient("http://localhost/webservice/api.php?wsdl"); 
try { 
    echo date("Y-m-d H:i:s", time()); 
    echo "<br>"; 
    echo $x->test('ok'); 
    echo "<br>"; 
    echo $x->hello(); 
    echo "<br>"; 
    echo $x->sum(1, 2); 
    echo "<br>"; 
    echo $x->power(5); 
    echo "<br>"; 
    echo $x->powe(3); 
} catch (SoapFault $f) { 
     echo "Error Message: {$f->getMessage()}"; 
}

运行http://127.0.0.1/webservice/test.php

php webservice详解编程语言

说明:

  如果删除了api.wsdl,要重新生成,先去掉

$server = new SoapServer('api.wsdl', array('soap_version' => SOAP_1_2)); ##此处的api.wsdl文件是上面生成的 
$server->setClass("api"); //注册Service类的所有方法 
$server->handle();

  测试时,再加上

 SoapDiscovery.class.php代码

<?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/" ?>/n"; 
        $headerWSDL.= "<definitions name=/"$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//">/n"; 
        $headerWSDL.= "<types xmlns=/"http://schemas.xmlsoap.org/wsdl//" />/n"; 
 
        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/">/n<soap:binding style=/"rpc/" transport=/"http://schemas.xmlsoap.org/soap/http/" />/n"; 
        $serviceWSDL = '<service name="'.$this->service_name."/">/n<documentation />/n<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']."/" />/n</port>/n</service>/n"; 
        $messageWSDL = ''; 
        foreach ($methods as $method) { 
            if ($method->isPublic() && !$method->isConstructor()) { 
                $portTypeWSDL.= '<operation name="'.$method->getName()."/">/n".'<input message="tns:'.$method->getName()."Request/" />/n<output message=/"tns:".$method->getName()."Response/" />/n</operation>/n"; 
                $bindingWSDL.= '<operation name="'.$method->getName()."/">/n".'<soap:operation soapAction="urn:'.$this->service_name.'#'.$this->class_name.'#'.$method->getName()."/" />/n<input><soap:body use=/"encoded/" namespace=/"urn:$this->service_name/" encodingStyle=/"http://schemas.xmlsoap.org/soap/encoding//" />/n</input>/n<output>/n<soap:body use=/"encoded/" namespace=/"urn:$this->service_name/" encodingStyle=/"http://schemas.xmlsoap.org/soap/encoding//" />/n</output>/n</operation>/n"; 
                $messageWSDL.= '<message name="'.$method->getName()."Request/">/n"; 
                $parameters = $method->getParameters(); 
                foreach ($parameters as $parameter) { 
                    $messageWSDL.= '<part name="'.$parameter->getName()."/" type=/"xsd:string/" />/n"; 
                } 
                $messageWSDL.= "</message>/n"; 
                $messageWSDL.= '<message name="'.$method->getName()."Response/">/n"; 
                $messageWSDL.= '<part name="'.$method->getName()."/" type=/"xsd:string/" />/n"; 
                $messageWSDL.= "</message>/n"; 
            } 
        } 
        $portTypeWSDL.= "</portType>/n"; 
        $bindingWSDL.= "</binding>/n"; 
        return sprintf('%s%s%s%s%s%s', $headerWSDL, $portTypeWSDL, $bindingWSDL, $serviceWSDL, $messageWSDL, '</definitions>'); 
    } 
     
    /** 
     * SoapDiscovery::getDiscovery() Returns discovery of WSDL. 
     *  
     * @return string 
     **/ 
    public function getDiscovery() { 
        return "<?xml version=/"1.0/" ?>/n<disco:discovery xmlns:disco=/"http://schemas.xmlsoap.org/disco//" xmlns:scl=/"http://schemas.xmlsoap.org/disco/scl//">/n<scl:contractRef ref=/"http://".$_SERVER['SERVER_NAME'].':'.$_SERVER['SERVER_PORT'].$_SERVER['PHP_SELF']."?wsdl/" />/n</disco:discovery>"; 
    } 
} 
 
?>

原创文章,作者:ItWorker,如若转载,请注明出处:https://blog.ytso.com/tech/pnotes/20379.html

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