Fuse 6 is no longer supported
As of February 2025, Red Hat Fuse 6 is no longer supported. If you are using Fuse 6, please upgrade to Red Hat build of Apache Camel.Ce contenu n'est pas disponible dans la langue sélectionnée.
Chapter 18. JavaScript
Overview
Copier lienLien copié sur presse-papiers!
				JavaScript, also known as ECMAScript is a Java-based scripting language that allows quick parsing of object. The JavaScript support is part of the 
camel-script module.
			Adding the script module
Copier lienLien copié sur presse-papiers!
				To use JavaScript in your routes you need to add a dependency on 
camel-script to your project as shown in Example 18.1, “Adding the camel-script dependency”.
			Example 18.1. Adding the camel-script dependency
Static import
Copier lienLien copié sur presse-papiers!
				To use the 
javaScript() static method in your application code, include the following import statement in your Java source files:
			import static org.apache.camel.builder.camel.script.ScriptBuilder.*;
import static org.apache.camel.builder.camel.script.ScriptBuilder.*;Built-in attributes
Copier lienLien copié sur presse-papiers!
				Table 18.1, “JavaScript attributes” lists the built-in attributes that are accessible when using JavaScript.
			
| Attribute | Type | Value | 
|---|---|---|
| context | org.apache.camel.CamelContext | The Camel Context | 
| exchange | org.apache.camel.Exchange | The current Exchange | 
| request | org.apache.camel.Message | The IN message | 
| response | org.apache.camel.Message | The OUT message | 
| properties | org.apache.camel.builder.script.PropertiesFunction | Function with a resolvemethod to make it easier to use the properties component inside scripts. | 
				The attributes all set at 
ENGINE_SCOPE.
			Example
Copier lienLien copié sur presse-papiers!
				Example 18.2, “Route using JavaScript” shows a route that uses JavaScript.
			
Example 18.2. Route using JavaScript
Using the properties component
Copier lienLien copié sur presse-papiers!
				To access a property value from the properties component, invoke the 
resolve method on the built-in properties attribute, as follows:
			.setHeader("myHeader").javaScript("properties.resolve(PropKey)")
.setHeader("myHeader").javaScript("properties.resolve(PropKey)")
				Where PropKey is the key of the property you want to resolve, where the key value is of 
String type.
			
				For more details about the properties component, see chapter "Properties" in "Apache Camel Component Reference".