[CONF] Apache Camel > JSonPath

[Claus Ibsen (Confluence)]

JSonPath Page added by Claus Ibsen JSonPath Available as of Camel 2.13 Camel supports JSonPath to allow using _expression_ or Predicate on json messages. from("queue:books.new") .choice() .when().jsonPath("$.store.book[?(@.price < 10)]") .to("jms:queue:book.cheap") .when().jsonPath("$.store.book[?(@.price < 30)]") .to("jms:queue:book.average") .otherwise() .to("jms:queue:book.expensive") Using XML configuration If you prefer to configure your routes in your Spring XML file then you can use JSonPath expressions as follows <camelContext id="camel" xmlns="http://camel.apache.org/schema/spring"> <route> <from uri="direct:start"/> <choice> <when> <jsonpath>$.store.book[?(@.price &lt; 10)]</jsonpath> <to uri="mock:cheap"/> </when> <when> <jsonpath>$.store.book[?(@.price &lt; 30)]</jsonpath> <to uri="mock:average"/> </when> <otherwise> <to uri="mock:expensive"/> </otherwise> </choice> </route> </camelContext> Syntax See the JSonPath project page for further examples. JSonPath injection You can use Bean Integration to invoke a method on a bean and use various languages such as JSonPath to extract a value from the message and bind it to a method parameter. For example public class Foo { @Consume(uri = "activemq:queue:books.new") public void doSomething(@JSonPath("$.store.book[*].author") String author, @Body String json) { // process the inbound message here } } Dependencies To use JSonPath in your camel routes you need to add the a dependency on camel-jsonpath which implements the JSonPath language. If you use maven you could just add the following to your pom.xml, substituting the version number for the latest & greatest release (see the download page for the latest versions). <dependency> <groupId>org.apache.camel</groupId> <artifactId>camel-jsonpath</artifactId> <version>x.x.x</version> </dependency> Stop watching space | Change email notification preferences View Online