The matching wildcard is strict, but no declaration can be found for element 'context:component-scan 해결법
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Java Spring/Tip
xmlns:context="http://www.springframework.org/schema/context" 추가 하고 xsi:schemaLocation에 http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd 를 추가한다.