Sample 158: Exposing a SOAP service over JSON
<definitions xmlns="http://ws.apache.org/ns/synapse">
<proxy name="JSONProxy" transports="http https">
<target>
<endpoint>
<address uri="http://localhost:9000/services/SimpleStockQuoteService" format="soap11"/>
</endpoint>
<inSequence>
<log level="full"/>
<xslt key="in_transform"/>
</inSequence>
<outSequence>
<log level="full"/>
<xslt key="out_transform"/>
<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>
Pre-requisites
- Deploy the SimpleStockQuoteService in the sample Axis2 server and start Axis2
-
Start Synapse using the configuration numbered 158 (repository/conf/sample/synapse_sample_158.xml)
Unix/Linux: sh synapse.sh -sample 158
Windows: synapse.bat -sample 158
Executing the Client
ant jsonclient -Daddurl=http://localhost:9000/services/SimpleStockQuoteService -Dtrpurl=http://localhost:8280/services/JSONProxy
JSON client will send a stockquote request to Synapse using the JSON content interchange format. Synapse will transform 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.
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:
{"getQuote":{"request":{"symbol":"IBM"}}}
{"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}}}