Java实现SOAP协议之 HelloWorld

时间：2016-07-01 06:32:33 阅读：724 评论：0 收藏：0 [点我收藏+]

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Java实现SOAP协议之 HelloWorld

SOAP是把基于HTTP的WEB技术与XML的灵活性和可扩展性组合在了一起。

准备：

1. 准备一个web server。Tomcat 下载地址 http://tomcat.apache.org/

本例使用版本 apache-tomcat-7.0.54-windows-x64.zip

2. 写一个servlet send用来发送一个SOAP的message并添加一个附件。

3. 写一个servlet receive用来做SOAP message的解析并返回一个response。

4. 写一个简单的html页面触发 servlet A。

开发工具：

eclipse 版本 eclipse-jee-juno-SR2-win32-x86_64

下载地址：

http://www.eclipse.org/downloads/

下载J2EE版本的eclipse里面包含了SOAP常用的一些jar，但这个版本的没有jaxm-api.jar，这个需要额外下载

然后倒入。

代码结构：

技术分享

web.xml代码如下：

Xml代码

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN"
"http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">
<web-app>
<servlet>
<servlet-name>DemoSend</servlet-name>
<servlet-class>cody.soap.demo.DemoSend</servlet-class>
</servlet>
<servlet>
<servlet-name>DemoReceiver</servlet-name>
<servlet-class>cody.soap.demo.DemoReceiver</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>DemoSend</servlet-name>
<url-pattern>/DemoSend</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>DemoReceiver</servlet-name>
<url-pattern>/DemoReceiver</url-pattern>
</servlet-mapping>
</web-app>

DemoSend.java

Java代码

package cody.soap.demo;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.URL;
import javax.activation.DataHandler;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.xml.soap.AttachmentPart;
import javax.xml.soap.MessageFactory;
import javax.xml.soap.SOAPBody;
import javax.xml.soap.SOAPConnection;
import javax.xml.soap.SOAPConnectionFactory;
import javax.xml.soap.SOAPEnvelope;
import javax.xml.soap.SOAPException;
import javax.xml.soap.SOAPHeader;
import javax.xml.soap.SOAPMessage;
import javax.xml.soap.SOAPPart;
public class DemoSend extends HttpServlet {
/**
*
*/
private static final long serialVersionUID = 1L;
private SOAPConnection connection;
@Override
public void init() throws ServletException {
super.init();
try {
SOAPConnectionFactory connectionFactory = SOAPConnectionFactory.newInstance();
connection = connectionFactory.createConnection();
} catch (UnsupportedOperationException e) {
e.printStackTrace();
} catch (SOAPException e) {
e.printStackTrace();
}
}
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
String outString ="<HTML><H1>Sending and reading the SOAP Message</H1><P>";
try {
MessageFactory messageFactory = MessageFactory.newInstance();
SOAPMessage outgoingMessage = messageFactory.createMessage();
SOAPPart soappart = outgoingMessage.getSOAPPart();
SOAPEnvelope envelope = soappart.getEnvelope();
SOAPHeader header = envelope.getHeader();
SOAPBody body = envelope.getBody();
body.addBodyElement(envelope.createName("numberAvailable", "laptops", "http://ecodl.taobao.com/")).addTextNode("216");
StringBuffer serverUrl = new StringBuffer();
serverUrl.append(request.getScheme()).append("://").append(request.getServerName());
serverUrl.append(":").append(request.getServerPort()).append(request.getContextPath());
String baseUrl = serverUrl.toString();
URL url = new URL(baseUrl + "/test.html");
AttachmentPart attachmentpart = outgoingMessage.createAttachmentPart(new DataHandler(url));
attachmentpart.setContentType("text/html");
outgoingMessage.addAttachmentPart(attachmentpart);
URL client = new URL(baseUrl + "/DemoReceiver");
FileOutputStream outgoingFile = new FileOutputStream("out.msg");
outgoingMessage.writeTo(outgoingFile);
outgoingFile.close();
outString += "SOAP outgoingMessage sent (see out.msg). <BR>"+baseUrl+"<BR>";
SOAPMessage incomingMessage = connection.call(outgoingMessage, client);
if (incomingMessage != null) {
FileOutputStream incomingFile = new FileOutputStream("in.msg");
incomingMessage.writeTo(incomingFile);
incomingFile.close();
outString += "SOAP outgoingMessage received (see in.msg).</HTML>";
}
} catch (SOAPException e) {
e.printStackTrace();
}
try {
OutputStream outputStream = response.getOutputStream();
outputStream.write(outString.getBytes());
outputStream.flush();
outputStream.close();
} catch (IOException e) {}
}
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
doGet(req, resp);
}
}

DemoReceiver.java

Java代码

package cody.soap.demo;
import java.util.Iterator;
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.SOAPBody;
import javax.xml.soap.SOAPElement;
import javax.xml.soap.SOAPEnvelope;
import javax.xml.soap.SOAPException;
import javax.xml.soap.SOAPMessage;
import javax.xml.soap.SOAPPart;
public class DemoReceiver extends JAXMServlet implements ReqRespListener{
/**
* Generated automatically
*/
private static final long serialVersionUID = 1L;
private static MessageFactory messageFactory = null;
@Override
public void init(ServletConfig servletConfig) throws ServletException {
super.init(servletConfig);
try {
messageFactory = MessageFactory.newInstance();
} catch (SOAPException e) {
e.printStackTrace();
}
}
@Override
public SOAPMessage onMessage(SOAPMessage msg) {
SOAPPart soappart = msg.getSOAPPart();
try {
SOAPEnvelope incomingEnvelope;
incomingEnvelope = soappart.getEnvelope();
SOAPBody body = incomingEnvelope.getBody();
Iterator<?> iterator = body.getChildElements(incomingEnvelope.createName("numberAvailable", "laptops", "http://ecodl.taobao.com/"));
SOAPElement element;
element = (SOAPElement) iterator.next();
SOAPMessage message = messageFactory.createMessage();
SOAPEnvelope envelope = message.getSOAPPart().getEnvelope();
SOAPBody responsebody = envelope.getBody();
String responseText = "Got the SOAP message indicating there are " + element.getValue() + " laptops available.";
responsebody.addChildElement(envelope.createName("Response")).addTextNode(responseText);
return message;
} catch (SOAPException e) {
e.printStackTrace();
return null;
}
}
}

test.xml

Html代码

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<HTML>
<HEAD>
<TITLE>SOAP and Java</TITLE>
</HEAD>
<BODY>
<H1>SOAP and Java</H1>
Click <A HREF="DemoSend">here</a> to send the SOAP message.
</BODY>
</HTML>

out.msg

Xml代码

------=_Part_0_1985246804.1403343570084
Content-Type: text/xml; charset=utf-8
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
<SOAP-ENV:Header/>
<SOAP-ENV:Body>
<laptops:numberAvailable xmlns:laptops="http://ecodl.taobao.com/">216</laptops:numberAvailable>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>
------=_Part_0_1985246804.1403343570084
Content-Type: text/html
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<HTML>
<HEAD>
<TITLE>SOAP and Java</TITLE>
</HEAD>
<BODY>
<H1>SOAP and Java</H1>
Click <A HREF="DemoSend">here</a> to send the SOAP message.
</BODY>
</HTML>
------=_Part_0_1985246804.1403343570084--

in.msg

Xml代码

<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/">
<SOAP-ENV:Header/>
<SOAP-ENV:Body>
<Response>Got the SOAP message indicating there are 216 laptops available.
</Response>
</SOAP-ENV:Body>
</SOAP-ENV:Envelope>

原文：http://www.informit.com/library/content.aspx?b=STY_XML_21days&seqNum=228

在Tomcat上部署的目录结构：

webapps [This is a directory]
|____soapdemoserver [This is a directory]
     |____test.html [Our starting Web page]
     |____WEB-INF [This is a directory]
          |____web.xml [Configures Tomcat]
          |____classes [This is a directory]
               |____cody/soap/demo [This is a directory]
                    |____DemoReceiver.class [The server servlet]
                    |____DemoSend.class [The client servlet]

Java实现SOAP协议之 HelloWorld

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原文地址：http://www.cnblogs.com/destim/p/4753737.html

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Java实现SOAP协议 之 HelloWorld