Xml – maven spring – Cannot find the declaration of element ‘beans’

mavenmaven-2schemaspringxml

I have a spring project built with the usage of maven (packaged as jar) (dependencies are copied to a separate directory and added to classpath)

I want to run it as java -jar

The problem is that when I run it I get:

Caused by: org.xml.sax.SAXParseException: cvc-elt.1: Cannot find the declaration
of element 'beans'.

It happens because spring.schemas and spring.handlers are located in a few jars i.e.: spring-beans, etc.

Is there any way to solve it, supposing that I don't want to use shade plugin to unpack all dependencies and concatenate the content of spring.schemas and spring.handlers?

I would also like to avoid saving xsd files in my project and changing schemaLocation to point to my location.

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xmlns:camel="http://camel.apache.org/schema/spring"
    xsi:schemaLocation="
       http://www.springframework.org/schema/beans http://http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
       http://camel.apache.org/schema/spring http://camel.apache.org/schema/spring/camel-spring.xsd">

    <camel:camelContext>
        <camel:routeBuilder ref="fakeRouteBuilder"/>
    </camel:camelContext>

    <bean id="fakeRouteBuilder" class="<className>" />


</beans>

Best Answer

I know 2 situations where you can have this problem

If you don't have an internet connection (behind a proxy, for instance). In that case, download the XSD, copy it next to the XML, and change the schema location to xsi:schemaLocation=" http://www.springframework.org/schema/beans spring-beans-2.5.xsd ..."
If you have an internet connection / still have the problem, that's because you use different versions of Spring for the XSD and the jar.

Related Solutions

Java – What’s the difference between @Component, @Repository & @Service annotations in Spring

From Spring Documentation:

The @Repository annotation is a marker for any class that fulfils the role or stereotype of a repository (also known as Data Access Object or DAO). Among the uses of this marker is the automatic translation of exceptions, as described in Exception Translation.

Spring provides further stereotype annotations: @Component, @Service, and @Controller. @Component is a generic stereotype for any Spring-managed component. @Repository, @Service, and @Controller are specializations of @Component for more specific use cases (in the persistence, service, and presentation layers, respectively). Therefore, you can annotate your component classes with @Component, but, by annotating them with @Repository, @Service, or @Controller instead, your classes are more properly suited for processing by tools or associating with aspects.

For example, these stereotype annotations make ideal targets for pointcuts. @Repository, @Service, and @Controller can also carry additional semantics in future releases of the Spring Framework. Thus, if you are choosing between using @Component or @Service for your service layer, @Service is clearly the better choice. Similarly, as stated earlier, @Repository is already supported as a marker for automatic exception translation in your persistence layer.

Annotation	Meaning
`@Component`	generic stereotype for any Spring-managed component
`@Repository`	stereotype for persistence layer
`@Service`	stereotype for service layer
`@Controller`	stereotype for presentation layer (spring-mvc)

Xml – Spring xml problem

Change the <beans declaration at the top of the XML to look like this:

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xmlns:aop="http://www.springframework.org/schema/aop"
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 
    http://www.springframework.org/schema/aop
    http://www.springframework.org/schema/aop/spring-aop-3.0.xsd">

You're just adding this "http://www.springframework.org/schema/aop/spring-aop-3.0.xsd". The xsi:schemaLocation attribute is just a bunch of pairs. The first of each pair is a schema URI, the second is the URL where the schema can be found. You can think of it as a map: key, then value.

Best Answer

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Java – What’s the difference between @Component, @Repository & @Service annotations in Spring

Xml – Spring xml problem

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