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-rw-r--r--java/sca/modules/implementation-web-runtime/src/main/java/org/apache/tuscany/sca/implementation/web/runtime/jsp/ReferenceTag.java3
1 files changed, 3 insertions, 0 deletions
diff --git a/java/sca/modules/implementation-web-runtime/src/main/java/org/apache/tuscany/sca/implementation/web/runtime/jsp/ReferenceTag.java b/java/sca/modules/implementation-web-runtime/src/main/java/org/apache/tuscany/sca/implementation/web/runtime/jsp/ReferenceTag.java
index 46c5b89459..b4655e3d95 100644
--- a/java/sca/modules/implementation-web-runtime/src/main/java/org/apache/tuscany/sca/implementation/web/runtime/jsp/ReferenceTag.java
+++ b/java/sca/modules/implementation-web-runtime/src/main/java/org/apache/tuscany/sca/implementation/web/runtime/jsp/ReferenceTag.java
@@ -50,6 +50,9 @@ public class ReferenceTag extends TagSupport {
ServletContext servletContext = pageContext.getServletContext();
RuntimeComponent component = (RuntimeComponent)servletContext.getAttribute("org.apache.tuscany.sca.implementation.web.RuntimeComponent");
+ if (component == null) {
+ throw new JspException("No Web component found. Is there an <implementation.web> missing?");
+ }
Class<?> typeClass;
try {