Hessian

Since Camel 2.17

Hessian is Data Format for marshalling and unmarshalling messages using Caucho’s Hessian format.

If you want to use Hessian Data Format from Maven, add the following dependency to your pom.xml:

<dependency>
    <groupId>org.apache.camel</groupId>
    <artifactId>camel-hessian</artifactId>
    <version>x.x.x</version>
    <!-- use the same version as your Camel core version -->
</dependency>

Options

The Hessian dataformat supports 4 options, which are listed below.

Name Default Java Type Description

whitelistEnabled

true

Boolean

Define if Whitelist feature is enabled or not

allowedUnmarshallObjects

String

Define the allowed objects to be unmarshalled

deniedUnmarshallObjects

String

Define the denied objects to be unmarshalled

contentTypeHeader

false

Boolean

Whether the data format should set the Content-Type header with the type from the data format if the data format is capable of doing so. For example application/xml for data formats marshalling to XML, or application/json for data formats marshalling to JSon etc.

Spring Boot Auto-Configuration

When using Spring Boot make sure to use the following Maven dependency to have support for auto configuration:

<dependency>
  <groupId>org.apache.camel</groupId>
  <artifactId>camel-hessian-starter</artifactId>
  <version>x.x.x</version>
  <!-- use the same version as your Camel core version -->
</dependency>

The component supports 5 options, which are listed below.

Name Description Default Type

camel.dataformat.hessian.allowed-unmarshall-objects

Define the allowed objects to be unmarshalled

String

camel.dataformat.hessian.content-type-header

Whether the data format should set the Content-Type header with the type from the data format if the data format is capable of doing so. For example application/xml for data formats marshalling to XML, or application/json for data formats marshalling to JSon etc.

false

Boolean

camel.dataformat.hessian.denied-unmarshall-objects

Define the denied objects to be unmarshalled

String

camel.dataformat.hessian.enabled

Enable hessian dataformat

true

Boolean

camel.dataformat.hessian.whitelist-enabled

Define if Whitelist feature is enabled or not

true

Boolean

ND

Using the Hessian data format in Java DSL

    from("direct:in")
        .marshal().hessian();

Using the Hessian data format in Spring DSL

    <camelContext id="camel" xmlns="http://camel.apache.org/schema/spring">
        <route>
            <from uri="direct:in"/>
            <marshal ref="hessian"/>
        </route>
    </camelContext>
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