如何在 Java 中使用 SOAP Web 服务

How to consume a SOAP web service in Java

提问by OyugiK

Can someone please help me with some links and other on how to consume a web service WSDL in Java?

有人可以帮我提供一些关于如何在 Java 中使用 Web 服务 WSDL 的链接和其他链接吗？

回答by constantlearner

I will use CXFalso you can think of AXIS 2 .

我将使用CXF你也可以想到 AXIS 2 。

The best way to do it may be using JAX RS Refer this example

最好的方法可能是使用 JAX RS 参考这个例子

Example:

wsimport -p stockquote http://stockquote.xyz/quote?wsdl

This will generate the Java artifacts and compile them by importing the http://stockquote.xyz/quote?wsdl.

I

一世

回答by Maciej Cygan

As some sugested you can use apache or jax-ws. You can also use tools that generate code from WSDL such as ws-import but in my opinion the best way to consume web service is to create a dynamic client and invoke only operations you want not everything from wsdl. You can do this by creating a dynamic client: Sample code:

正如某些人所说，您可以使用 apache 或 jax-ws。您还可以使用从 WSDL 生成代码的工具，例如 ws-import，但在我看来，使用 Web 服务的最佳方法是创建一个动态客户端并仅调用您不希望从 wsdl 获取所有内容的操作。您可以通过创建动态客户端来做到这一点： 示例代码：

String endpointUrl = ...;

QName serviceName = new QName("http://com/ibm/was/wssample/echo/",
 "EchoService");
QName portName = new QName("http://com/ibm/was/wssample/echo/",
 "EchoServicePort");

/** Create a service and add at least one port to it. **/ 
Service service = Service.create(serviceName);
service.addPort(portName, SOAPBinding.SOAP11HTTP_BINDING, endpointUrl);

/** Create a Dispatch instance from a service.**/ 
Dispatch<SOAPMessage> dispatch = service.createDispatch(portName, 
SOAPMessage.class, Service.Mode.MESSAGE);

/** Create SOAPMessage request. **/
// compose a request message
MessageFactory mf = MessageFactory.newInstance(SOAPConstants.SOAP_1_1_PROTOCOL);

// Create a message.  This example works with the SOAPPART.
SOAPMessage request = mf.createMessage();
SOAPPart part = request.getSOAPPart();

// Obtain the SOAPEnvelope and header and body elements.
SOAPEnvelope env = part.getEnvelope();
SOAPHeader header = env.getHeader();
SOAPBody body = env.getBody();

// Construct the message payload.
SOAPElement operation = body.addChildElement("invoke", "ns1",
 "http://com/ibm/was/wssample/echo/");
SOAPElement value = operation.addChildElement("arg0");
value.addTextNode("ping");
request.saveChanges();

/** Invoke the service endpoint. **/
SOAPMessage response = dispatch.invoke(request);

/** Process the response. **/

回答by Popa Andrei

Hereyou can find a nice tutorial of how you can create and consume a SOAP service through WSDL. Long story short you need to call wsimporttool from command line (you can find it in your jdk) with parameters like -s (source for .java files) -d (destination for .class files) and the wsdl link.

在这里您可以找到一个很好的教程，介绍如何通过 WSDL 创建和使用 SOAP 服务。长话短说，您需要从命令行（您可以在 jdk 中找到它）使用 -s（.java 文件的源）-d（.class 文件的目标）和 wsdl 链接等参数调用wsimport工具。

$ wsimport -s "C:\workspace\soap\src\main\java\com\test\soap\ws" -d "C:\workspace\soap\target\classes\com\test\soap\ws" http://localhost:8855/soap/test?wsdl

After the stubs are created, you can call the webservices very easy something like:

创建存根后，您可以非常轻松地调用 Web 服务，例如：

TestHarnessService harnessService = new TestHarnessService();
ITestApi testApi = harnessService.getBasicHttpBindingITestApi();
testApi.resetLogMemoryTarget();

回答by RAS

There are many options to consume a SOAP web service with Stub or Java classes created based on WSDL. But if anyone wants to do this without any Java class created, thisarticle is very helpful. Code Snippet from the article:

有许多选项可以使用基于 WSDL 创建的 Stub 或 Java 类来使用 SOAP Web 服务。但是如果有人想在不创建任何 Java 类的情况下做到这一点，这篇文章非常有帮助。文章中的代码片段：

public String someMethod() throws MalformedURLException, IOException {

//Code to make a webservice HTTP request
String responseString = "";
String outputString = "";
String wsURL = "<Endpoint of the webservice to be consumed>";
URL url = new URL(wsURL);
URLConnection connection = url.openConnection();
HttpURLConnection httpConn = (HttpURLConnection)connection;
ByteArrayOutputStream bout = new ByteArrayOutputStream();
String xmlInput = "entire SOAP Request";

byte[] buffer = new byte[xmlInput.length()];
buffer = xmlInput.getBytes();
bout.write(buffer);
byte[] b = bout.toByteArray();
String SOAPAction = "<SOAP action of the webservice to be consumed>";
// Set the appropriate HTTP parameters.
httpConn.setRequestProperty("Content-Length",
String.valueOf(b.length));
httpConn.setRequestProperty("Content-Type", "text/xml; charset=utf-8");
httpConn.setRequestProperty("SOAPAction", SOAPAction);
httpConn.setRequestMethod("POST");
httpConn.setDoOutput(true);
httpConn.setDoInput(true);
OutputStream out = httpConn.getOutputStream();
//Write the content of the request to the outputstream of the HTTP Connection.
out.write(b);
out.close();
//Ready with sending the request.

//Read the response.
InputStreamReader isr = null;
if (httpConn.getResponseCode() == 200) {
  isr = new InputStreamReader(httpConn.getInputStream());
} else {
  isr = new InputStreamReader(httpConn.getErrorStream());
}

BufferedReader in = new BufferedReader(isr);

//Write the SOAP message response to a String.
while ((responseString = in.readLine()) != null) {
outputString = outputString + responseString;
}
//Parse the String output to a org.w3c.dom.Document and be able to reach every node with the org.w3c.dom API.
Document document = parseXmlFile(outputString); // Write a separate method to parse the xml input.
NodeList nodeLst = document.getElementsByTagName("<TagName of the element to be retrieved>");
String elementValue = nodeLst.item(0).getTextContent();
System.out.println(elementValue);

//Write the SOAP message formatted to the console.
String formattedSOAPResponse = formatXML(outputString); // Write a separate method to format the XML input.
System.out.println(formattedSOAPResponse);
return elementValue;
}

For those who're looking for a similar kind of solution with file upload while consuming a SOAP API, please refer to this post: How to attach a file (pdf, jpg, etc) in a SOAP POST request?

对于那些在使用 SOAP API 时正在寻找类似文件上传解决方案的人，请参阅这篇文章：如何在 SOAP POST 请求中附加文件（pdf、jpg 等）？