之前因为一时没找到实现JAXM服务端的教程，只能放下了对它的学习，转向了JAX-WS。但现在又必须要用到了，于是下狠心一定要从谷歌的“资料库”里找到个解决办法来。还好，谷歌没让我失望：原来实现一个服务端很简单，写个servlet即可。

       这里罗列两个给我提供最大帮助的链接：《 Working with SOAP Messages 》 、《深入探索SOAP1.1--使用SAAJ1.2.1》 。

       我的开发环境是JDK1.6U7、JEE5（主要用到了它的jaxm-api包）、eclipse3.4 jee版、Tomcat6。

       首先建立服务器端的servlet。在eclipse里新建一个dynamic web project(可能其它类型的也可以)，再新建一个servlet，我取名ReceiveServlet，继承javax.xml.messaging.JAXMServlet，实现接口javax.xml.messaging.ReqRespListener，具体代码如下：

import java.io.File;
import java.io.FileOutputStream;

import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.xml.messaging.JAXMServlet;
import javax.xml.messaging.ReqRespListener;
import javax.xml.soap.MessageFactory;
import javax.xml.soap.SOAPEnvelope;
import javax.xml.soap.SOAPMessage;

/**
 * Servlet implementation class ReceiveServlet
 */
public class ReceiveServlet extends JAXMServlet implements ReqRespListener {
	private static final long serialVersionUID = 1L;
	static MessageFactory mf = null;
	// create a messagefactory
	static {
		try {
			mf = MessageFactory.newInstance();
		} catch (Exception e) {
			e.printStackTrace();
		}
	};

	/**
	 * @see JAXMServlet#JAXMServlet()
	 */
	public ReceiveServlet() {
		super();

	}

	/**
	 * @see ReqRespListener#onMessage(SOAPMessage)
	 */
	public SOAPMessage onMessage(SOAPMessage msg) {
		SOAPMessage resp = null;
		try {
			System.out.println("Received message：");
			msg.writeTo(new FileOutputStream(new File(
					"../webapps/soapmessage.xml")));// I use tomcat so set this
													// directory

			// create a response message
			resp = mf.createMessage();
			SOAPEnvelope se = resp.getSOAPPart().getEnvelope();
			se.getBody().addChildElement(se.createName("ResponseMessage"))
					.addTextNode("Received Message,Thanks");

			return resp;
		} catch (Exception e) {
			e.printStackTrace();
		}

		return resp;
	}

	/**
	 * @see Servlet#init(ServletConfig)
	 */
	public void init(ServletConfig config) throws ServletException {

		super.init(config);
	}

}

  右击工程名，export->war，即完成了servlet的打包，我还将jaxm-api包塞到了war文件的lib目录里，也不知有没有用，没试过。发布这个war文件。这时在浏览器的地址栏里输入调用这个servlet的url会报错：

HTTP Status 405 - HTTP method GET is not supported by this URL

这就说明部署成功了，因为这个servlet用的不是HTTP协议，无法那样调用。

        现在建立客户端，也就是SOAP发送方。随便找个工程（刚才的也行），新建一个含main方法的类，具体代码如下：

import java.io.IOException;
import java.net.URL;

import javax.xml.messaging.URLEndpoint;
import javax.xml.soap.*;

public class SOAPSender {

	/**
	 * @param args
	 * @throws SOAPException
	 * @throws IOException
	 */
	public static void main(String[] args) throws IOException, SOAPException {
		SOAPSender sender = new SOAPSender();
		SOAPMessage message = sender.getMessage();
		sender.send(message);

	}

	public void send(SOAPMessage message) throws IOException, SOAPException {
		// Create SOAP connection
		SOAPConnectionFactory scf = SOAPConnectionFactory.newInstance();
		SOAPConnection sc = scf.createConnection();

		// Most article use this sentence which list below to specify the
		// endpoint, but I got error when I ran it.
		// URLEndpoint urlEndpoint = new URLEndpoint(
		// "http://localhost:8080/SOAP/ReceiveServlet");

		// Specify the endpoint
		URL url = new URL("http://localhost:8080/SOAP/ReceiveServlet");

		// Send the SOAP message
		SOAPMessage response = sc.call(message, url);

		if (response != null) {
			// Print the message to console
			System.out.println("Receive SOAP message from localhost:");
			response.writeTo(System.out);
		} else {
			System.err.println("No response received from partner!");
		}

		sc.close();

	}

	public SOAPMessage getMessage() throws SOAPException {

		// Create a message factory
		MessageFactory mf = MessageFactory.newInstance();
		// Create a SOAP message
		SOAPMessage message = mf.createMessage();

		SOAPEnvelope envelope = message.getSOAPPart().getEnvelope();
		// Add a namespace declaration to envelope element
		envelope.addNamespaceDeclaration("cwmp", "some uri");

		// Create header element
		SOAPHeader header = envelope.getHeader();

		// Create body element
		SOAPBody body = envelope.getBody();
		SOAPBodyElement bodyElement = body.addBodyElement(envelope.createName(
				"Test", "cwmp", "uri"));
		// add content to Test element
		bodyElement.addTextNode("Just a test! ");

		try {
			// Print the message we have created above to console
			message.writeTo(System.out);
		} catch (IOException e) {

			e.printStackTrace();
		}
		return message;
	}

}

        现在可以执行这个客户端，console会先显示我们准备发送的message，然后会显示我们从服务器接收到的回复message；在Tomcat的安装目录下的webapps目录下，会找到我们发送给服务器的message。至此，我的这个JAXM小实验就完成了！

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