小编典典

SOAP请求是一个XML文件，包含要发送到服务器的参数。

SOAP响应同样是一个XML文件，但是现在该服务希望提供给您一切。

基本上，WSDL是一个XML文件，解释了这两个XML的结构。

要使用Java实现简单的SOAP客户端，可以使用SAAJ框架(JSE 1.6及更高版本附带)：

带有Java附件API的SOAP(SAAJ) 主要用于直接处理任何Web Service

API幕后发生的SOAP请求/响应消息。它允许开发人员直接发送和接收肥皂消息，而不是使用JAX-WS。

参见下面使用SAAJ进行SOAP

Web服务调用的工作示例(运行它！)。它称为此Web服务。

import javax.xml.soap.*;

public class SOAPClientSAAJ {

// SAAJ - SOAP Client Testing

public static void main(String args[]) {

/*

The example below requests from the Web Service at:

http://www.webservicex.net/uszip.asmx?op=GetInfoByCity

To call other WS, change the parameters below, which are:

- the SOAP Endpoint URL (that is, where the service is responding from)

- the SOAP Action

Also change the contents of the method createSoapEnvelope() in this class. It constructs

the inner part of the SOAP envelope that is actually sent.

*/

String soapEndpointUrl = "http://www.webservicex.net/uszip.asmx";

String soapAction = "http://www.webserviceX.NET/GetInfoByCity";

callSoapWebService(soapEndpointUrl, soapAction);

}

private static void createSoapEnvelope(SOAPMessage soapMessage) throws SOAPException {

SOAPPart soapPart = soapMessage.getSOAPPart();

String myNamespace = "myNamespace";

String myNamespaceURI = "http://www.webserviceX.NET";

// SOAP Envelope

SOAPEnvelope envelope = soapPart.getEnvelope();

envelope.addNamespaceDeclaration(myNamespace, myNamespaceURI);

/*

Constructed SOAP Request Message:

New York

*/

// SOAP Body

SOAPBody soapBody = envelope.getBody();

SOAPElement soapBodyElem = soapBody.addChildElement("GetInfoByCity", myNamespace);

SOAPElement soapBodyElem1 = soapBodyElem.addChildElement("USCity", myNamespace);

soapBodyElem1.addTextNode("New York");

}

private static void callSoapWebService(String soapEndpointUrl, String soapAction) {

try {

// Create SOAP Connection

SOAPConnectionFactory soapConnectionFactory = SOAPConnectionFactory.newInstance();

SOAPConnection soapConnection = soapConnectionFactory.createConnection();

// Send SOAP Message to SOAP Server

SOAPMessage soapResponse = soapConnection.call(createSOAPRequest(soapAction), soapEndpointUrl);

// Print the SOAP Response

System.out.println("Response SOAP Message:");

soapResponse.writeTo(System.out);

System.out.println();

soapConnection.close();

} catch (Exception e) {

System.err.println("\nError occurred while sending SOAP Request to Server!\nMake sure you have the correct endpoint URL and SOAPAction!\n");

e.printStackTrace();

}

}

private static SOAPMessage createSOAPRequest(String soapAction) throws Exception {

MessageFactory messageFactory = MessageFactory.newInstance();

SOAPMessage soapMessage = messageFactory.createMessage();

createSoapEnvelope(soapMessage);

MimeHeaders headers = soapMessage.getMimeHeaders();

headers.addHeader("SOAPAction", soapAction);

soapMessage.saveChanges();

/* Print the request message, just for debugging purposes */

System.out.println("Request SOAP Message:");

soapMessage.writeTo(System.out);

System.out.println("\n");

return soapMessage;

}

}

2020-09-08