| <?xml version="1.0" encoding="ISO-8859-1" ?> |
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| |
| <document> |
| <properties> |
| <title>Apache Synapse - Sample 158</title> |
| </properties> |
| <body> |
| <section name="Sample 156: Exposing a SOAP service over JSON"> |
| <div class="xmlConf"><definitions xmlns="http://ws.apache.org/ns/synapse"> |
| |
| <proxy name="JSONProxy" transports="http https"> |
| <target> |
| <endpoint> |
| <address uri="http://localhost:9000/services/SimpleStockQuoteService"/> |
| </endpoint> |
| <inSequence> |
| <log level="full"/> |
| <xslt key="in_transform"/> |
| <property name="messageType" scope="axis2" value="text/xml"/> |
| </inSequence> |
| <outSequence> |
| <log level="full"/> |
| <xslt key="out_transform"/> |
| <property name="messageType" scope="axis2" value="application/json"/> |
| <send/> |
| </outSequence> |
| </target> |
| </proxy> |
| |
| <localEntry key="in_transform"> |
| <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" |
| xmlns:fn="http://www.w3.org/2005/02/xpath-functions" |
| xmlns:m0="http://services.samples" version="2.0" exclude-result-prefixes="m0 fn"> |
| <xsl:output method="xml" omit-xml-declaration="yes" indent="yes"/> |
| <xsl:template match="*"> |
| <xsl:element name="{local-name()}" namespace="http://services.samples"> |
| <xsl:copy-of select="attribute::*"/> |
| <xsl:apply-templates/> |
| </xsl:element> |
| </xsl:template> |
| </xsl:stylesheet> |
| </localEntry> |
| |
| <localEntry key="out_transform"> |
| <xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0"> |
| <xsl:output method="xml" version="1.0" encoding="UTF-8"/> |
| <xsl:template match="*"> |
| <xsl:element name="{local-name()}"> |
| <xsl:apply-templates/> |
| </xsl:element> |
| </xsl:template> |
| </xsl:stylesheet> |
| </localEntry> |
| |
| </definitions></div> |
| <subsection name="Objective"> |
| <p> |
| Demonstrate the ability to switch between JSON and XML/SOAP content interchange formats |
| </p> |
| </subsection> |
| <subsection name="Pre-requisites"> |
| <p> |
| <ul> |
| <li> |
| Setup Synapse and the sample Axis2 client for JSON (Refer Synapse <a href="setup/script.html#json">Samples Setup Guide</a> for details) |
| </li> |
| <li> |
| Deploy the SimpleStockQuoteService in the sample Axis2 server and start Axis2 |
| </li> |
| <li> |
| Start Synapse using the configuration numbered 158 (repository/conf/sample/synapse_sample_158.xml) |
| <div class="command"> |
| Unix/Linux: sh synapse.sh -sample 158<br/> |
| Windows: synapse.bat -sample 158 |
| </div> |
| </li> |
| </ul> |
| </p> |
| </subsection> |
| <subsection name="Executing the Client"> |
| <div class="command">ant jsonclient -Daddurl=http://localhost:9000/services/SimpleStockQuoteService -Dtrpurl=http://localhost:8280/services/JSONProxy</div> |
| <p>JSON client will send a stockquote request to Synapse using the |
| JSON content interchange format. Synapse will trnasform it into a SOAP |
| request and forward to the Axis2 server. The SOAP response from the |
| Axis2 server will be converted into a JSON message and sent back to the |
| JSON client.</p> |
| <p>You may use a tool like TCPMon to monitor the JSON requests sent |
| over the wire. A sample JSON request and response is shown below:</p> |
| |
| <div class="consoleOutput">{"getQuote":{"request":{"symbol":"IBM"}}}</div> |
| |
| <div class="consoleOutput">{"getQuoteResponse":{"return":{"change":3.853593376681722,"earnings":12.802850763714854,"high":67.92488310190126,"last":66.14619264746406,"lastTradeTimestamp":"Mon Aug 23 16:48:40 IST 2010","low":-66.04000424423522,"marketCap":-9334516.42324327,"name":"IBM Company","open":-64.61950137150009,"peRatio":-19.78600441437058,"percentageChange":5.411779328273005,"prevClose":71.2075112994578,"symbol":"IBM","volume":16842}}}</div> |
| </subsection> |
| </section> |
| <p><a href="../samples.html">Back to Catalog</a></p> |
| </body> |
| </document> |
