PHP Web Server 实例

Posted 2020-08-30 骑着蜗牛前行

　　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\" ?>\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";

        /**
         * 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\" ?>\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>";
	}
}

?>

　　

　　　来源 　　http://www.open-open.com/doc/view/fb5af38feff2470da22458e31c2087b1

　　　　　　　 http://www.360doc.com/content/11/0212/16/15103_92457365.shtml