Question

I am new to Spring Integration and XML. I have created the following configuration file:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xmlns:si="http://www.springframework.org/schema/integration"
   xmlns:context="http://www.springframework.org/schema/context"
   xsi:schemaLocation="

http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/integration
http://www.springframework.org/schema/integration/spring-integration-2.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd">

<context:component-scan base-package="com.springProject.app"/>
<int:channel id="input"/>
<int:channel id="output">
    <int:queue capacity="10"/>
</int:channel>


<int:service-activator input-channel="input"
                       output-channel="output"
                       ref="messageHandler"/>
</beans>

However the IDE gives me the error, telling me that the “the namespace ‘int’ is not bound”. Does anybody know where the error may be? Thanks in advance!

Answer 1

Currently the integration xmlns is bound to the prefix si, change this to int.

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xmlns:int="http://www.springframework.org/schema/integration"
   xmlns:context="http://www.springframework.org/schema/context"
   xsi:schemaLocation="

Notice the change in the fourth line

Alternatively you could change all of the tags prefixed with int to si, such as:

<si:channel id="input"/>
<si:channel id="output">
    <si:queue capacity="10"/>
</si:channel>