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j2eePDF格式的电子书

    } 
  } 
}<a name="wp72948"> </a>
</pre></div>
<a name="wp68274"> </a><p class="pBody">
The method <code class="cCode">onMessage</code> is the application code for responding to the message sent by <code class="cCode">PriceListRequest</code> and internalized into <code class="cCode">msg</code>. It uses the static <code class="cCode">MessageFactory</code> object <code class="cCode">fac</code> to create the <code class="cCode">SOAPMessage</code> object <code class="cCode">message</code> and then populates it with the distributor's current coffee prices.
</p>
<a name="wp68696"> </a><p class="pBody">
The method <code class="cCode">doPost</code> invokes <code class="cCode">onMessage</code> and passes it <code class="cCode">msg</code>. In this case, <code class="cCode">onMessage</code> does not need to use <code class="cCode">msg</code> because it simply creates a message containing the distributor's price list. The <code class="cCode">onMessage</code> method in <code class="cCode">ConfirmationServlet (</code><a  href="CB4.html#wp65933">Returning the Order Confirmation</a>), on the other hand, uses the message passed to it to get the order ID.
</p>
<div class="pPreformattedRelative"><pre class="pPreformattedRelative">
public SOAPMessage onMessage(SOAPMessage msg) { 
&nbsp;&nbsp;SOAPMessage message = null; 

&nbsp;&nbsp;try { 
&nbsp;&nbsp;&nbsp;&nbsp;message = fac.createMessage();

&nbsp;&nbsp;&nbsp;&nbsp;SOAPPart part = message.getSOAPPart(); 
&nbsp;&nbsp;&nbsp;&nbsp;SOAPEnvelope envelope = part.getEnvelope(); 
&nbsp;&nbsp;&nbsp;&nbsp;SOAPBody body = envelope.getBody();

&nbsp;&nbsp;&nbsp;&nbsp;Name bodyName = envelope.createName(&quot;price-list&quot;,
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&quot;PriceList&quot;, &quot;http://sonata.coffeebreak.com&quot;);
&nbsp;&nbsp;&nbsp;&nbsp;SOAPBodyElement list = body.addBodyElement(bodyName);

&nbsp;&nbsp;&nbsp;&nbsp;Name coffeeN = envelope.createName(&quot;coffee&quot;);
&nbsp;&nbsp;&nbsp;&nbsp;SOAPElement coffee = list.addChildElement(coffeeN);

&nbsp;&nbsp;&nbsp;&nbsp;Name coffeeNm1 = envelope.createName(&quot;coffee-name&quot;);
&nbsp;&nbsp;&nbsp;&nbsp;SOAPElement coffeeName = 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;coffee.addChildElement(coffeeNm1);
&nbsp;&nbsp;&nbsp;&nbsp;coffeeName.addTextNode(&quot;Arabica&quot;);

&nbsp;&nbsp;&nbsp;&nbsp;Name priceName1 = envelope.createName(&quot;price&quot;); 
&nbsp;&nbsp;&nbsp;&nbsp;SOAPElement price1 = coffee.addChildElement(priceName1);
&nbsp;&nbsp;&nbsp;&nbsp;price1.addTextNode(&quot;4.50&quot;);

&nbsp;&nbsp;&nbsp;&nbsp;Name coffeeNm2 = envelope.createName(&quot;coffee-name&quot;); 
&nbsp;&nbsp;&nbsp;&nbsp;SOAPElement coffeeName2 =
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;coffee.addChildElement(coffeeNm2);
&nbsp;&nbsp;&nbsp;&nbsp;coffeeName2.addTextNode(&quot;Espresso&quot;);

&nbsp;&nbsp;&nbsp;&nbsp;Name priceName2 = envelope.createName(&quot;price&quot;); 
&nbsp;&nbsp;&nbsp;&nbsp;SOAPElement price2 = coffee.addChildElement(priceName2);
&nbsp;&nbsp;&nbsp;&nbsp;price2.addTextNode(&quot;5.00&quot;);

&nbsp;&nbsp;&nbsp;&nbsp;Name coffeeNm3 = envelope.createName(&quot;coffee-name&quot;); 
&nbsp;&nbsp;&nbsp;&nbsp;SOAPElement coffeeName3 =
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;coffee.addChildElement(coffeeNm3);
&nbsp;&nbsp;&nbsp;&nbsp;coffeeName3.addTextNode(&quot;Dorada&quot;);

&nbsp;&nbsp;&nbsp;&nbsp;Name priceName3 = envelope.createName(&quot;price&quot;); 
&nbsp;&nbsp;&nbsp;&nbsp;SOAPElement price3 = coffee.addChildElement(priceName3);
&nbsp;&nbsp;&nbsp;&nbsp;price3.addTextNode(&quot;6.00&quot;);

&nbsp;&nbsp;&nbsp;&nbsp;Name coffeeNm4 = envelope.createName(&quot;coffee-name&quot;); 
&nbsp;&nbsp;&nbsp;&nbsp;SOAPElement coffeeName4 =
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;coffee.addChildElement(coffeeNm4);
&nbsp;&nbsp;&nbsp;&nbsp;coffeeName4.addTextNode(&quot;House Blend&quot;);

&nbsp;&nbsp;&nbsp;&nbsp;Name priceName4 = envelope.createName(&quot;price&quot;); 
&nbsp;&nbsp;&nbsp;&nbsp;SOAPElement price4 = coffee.addChildElement(priceName4);
&nbsp;&nbsp;&nbsp;&nbsp;price4.addTextNode(&quot;5.00&quot;);

&nbsp;&nbsp;&nbsp;&nbsp;message.saveChanges();

&nbsp;&nbsp;} catch(Exception e) { 
&nbsp;&nbsp;&nbsp;&nbsp;e.printStackTrace(); 
&nbsp;&nbsp;} 
&nbsp;&nbsp;return message; 
} <a name="wp68275"> </a>
</pre></div>
<a name="wp65933"> </a><h4 class="pHeading3">
Returning the Order Confirmation
</h4>
<a name="wp68733"> </a><p class="pBody">
<code class="cCode"><a  href="../examples/cb/saaj/src/com/sun/cb/ConfirmationServlet.java" target="_blank">ConfirmationServlet</a></code> creates the confirmation message that is returned to the <code class="cCode">call</code> method that is invoked in <code class="cCode">OrderRequest</code>. It is very similar to the code in <code class="cCode">PriceListServlet</code> except that instead of building a price list, its <code class="cCode">onMessage</code> method builds a confirmation with the order number and shipping date.
</p>
<a name="wp70070"> </a><p class="pBody">
The <code class="cCode">onMessage</code> method for this servlet uses the <code class="cCode">SOAPMessage</code> object passed to it by the <code class="cCode">doPost</code> method to get the order number sent in <code class="cCode">OrderRequest</code>. Then it builds a confirmation message with the order ID and shipping date. The shipping date is calculated as today's date plus two days.
</p>
<div class="pPreformattedRelative"><pre class="pPreformattedRelative">
public SOAPMessage onMessage(SOAPMessage message) {

&nbsp;&nbsp;SOAPMessage confirmation = null;

&nbsp;&nbsp;try {

&nbsp;&nbsp;&nbsp;&nbsp;// Retrieve orderID from message received
&nbsp;&nbsp;&nbsp;&nbsp;SOAPBody sentSB = 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;message.getSOAPPart().getEnvelope().getBody();
&nbsp;&nbsp;&nbsp;&nbsp;Iterator sentIt = sentSB.getChildElements();
&nbsp;&nbsp;&nbsp;&nbsp;SOAPBodyElement sentSBE = (SOAPBodyElement)sentIt.next();
&nbsp;&nbsp;&nbsp;&nbsp;Iterator sentIt2 = sentSBE.getChildElements();
&nbsp;&nbsp;&nbsp;&nbsp;SOAPElement sentSE = (SOAPElement)sentIt2.next();

&nbsp;&nbsp;&nbsp;&nbsp;// Get the orderID test to put in confirmation
&nbsp;&nbsp;&nbsp;&nbsp;String sentID = sentSE.getValue();

&nbsp;&nbsp;&nbsp;&nbsp;// Create the confirmation message
&nbsp;&nbsp;&nbsp;&nbsp;confirmation = fac.createMessage();
&nbsp;&nbsp;&nbsp;&nbsp;SOAPPart sp = confirmation.getSOAPPart();
&nbsp;&nbsp;&nbsp;&nbsp;SOAPEnvelope env = sp.getEnvelope();
&nbsp;&nbsp;&nbsp;&nbsp;SOAPBody sb = env.getBody();

&nbsp;&nbsp;&nbsp;&nbsp;Name newBodyName = env.createName(&quot;confirmation&quot;,
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&quot;Confirm&quot;, &quot;http://sonata.coffeebreak.com&quot;);
&nbsp;&nbsp;&nbsp;&nbsp;SOAPBodyElement confirm = sb.addBodyElement(newBodyName);

&nbsp;&nbsp;&nbsp;&nbsp;// Create the orderID element for confirmation
&nbsp;&nbsp;&nbsp;&nbsp;Name newOrderIDName = env.createName(&quot;orderId&quot;);
&nbsp;&nbsp;&nbsp;&nbsp;SOAPElement newOrderNo =
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;confirm.addChildElement(newOrderIDName);
&nbsp;&nbsp;&nbsp;&nbsp;newOrderNo.addTextNode(sentID);

&nbsp;&nbsp;&nbsp;&nbsp;// Create ship-date element
&nbsp;&nbsp;&nbsp;&nbsp;Name shipDateName = env.createName(&quot;ship-date&quot;);
&nbsp;&nbsp;&nbsp;&nbsp;SOAPElement shipDate = 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;confirm.addChildElement(shipDateName);

&nbsp;&nbsp;&nbsp;&nbsp;// Create the shipping date
&nbsp;&nbsp;&nbsp;&nbsp;Date today = new Date();
&nbsp;&nbsp;&nbsp;&nbsp;long msPerDay = 1000 * 60 * 60 * 24;
&nbsp;&nbsp;&nbsp;&nbsp;long msTarget = today.getTime();
&nbsp;&nbsp;&nbsp;&nbsp;long msSum = msTarget + (msPerDay * 2);
&nbsp;&nbsp;&nbsp;&nbsp;Date result = new Date();
&nbsp;&nbsp;&nbsp;&nbsp;result.setTime(msSum);
&nbsp;&nbsp;&nbsp;&nbsp;String sd = result.toString();
&nbsp;&nbsp;&nbsp;&nbsp;shipDate.addTextNode(sd);

&nbsp;&nbsp;&nbsp;&nbsp;confirmation.saveChanges();

&nbsp;&nbsp;} catch (Exception ex) {
&nbsp;&nbsp;&nbsp;&nbsp;ex.printStackTrace();
&nbsp;&nbsp;}
&nbsp;&nbsp;return confirmation;
}<a name="wp69951"> </a>
</pre></div>
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