No declaration can be found for element 'conte

Question

i'm starting with Spring 3 (3.1.2) and Google App Engine.

I've followed a tutoria online, now, i've my bean-realted xml which has a problem while starting.

this is the code

<?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:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans 
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context/
http://www.springframework.org/schema/context/spring-context.xsd">
<context:component-scan base-package="my.example">

where the root package of all the java file is "my.example". The subpackage are "model" and "controller" with subpackages as well. now.

when i start the app i receive back this error:

org.springframework.beans.factory.xml.XmlBeanDefinitionStoreException: Line 10 in XML document from ServletContext resource [/WEB-INF/spring-servlet.xml] is invalid; nested exception is org.xml.sax.SAXParseException: cvc-complex-type.2.4.c: The matching wildcard is strict, but no declaration can be found for element 'context:component-scan'.

with a lot of more stacktrace.

does anyone know how i can solve this? i checked the XSD and they seems to be correct.

Answer 1

You are probably missing spring-context.jar, that is the one which contains the definition for context schema.

Answer 2

Problem is incompatible schema locations with your spring-context dependencies.

Replace

http://www.springframework.org/schema/context/spring-context.xsd

by

http://www.springframework.org/schema/context/spring-context-2.5.xsd

That should do the trick! I was using spring-context 3.1.1 and I was getting the same error referring to http://www.springframework.org/schema/context/spring-context-2.1.xsd

However, you should also do a maven tree dependendency and check if you've got different spring versions. This error could be due to this fact also...

Answer 3

I don't know if this helps any, but I had an error very similar to yours while using the maven shade plugin to make a single .jar, and the shade plugin wiped out the spring.handlers and spring.schemas from META-INF/.

This SO answer pointed me in the right direction: https://stackoverflow.com/a/3650844/7008

And the document on using an AppendingTransformer to add those spring bits back in to your META-INF/ folder did the trick for me: http://maven.apache.org/plugins/maven-shade-plugin/examples/resource-transformers.html#AppendingTransformer