fix: EgovWebServiceMessageHeader.setResultCode 가 null 을 막지 못해 응답 헤더 복사가 죽는 문제 수정

Integration/org.egovframe.rte.itl.webservice/src/main/java/org/egovframe/rte/itl/webservice/EgovWebServiceMessageHeader.java

@@ -365,7 +365,7 @@ public ResultCode getResultCode() {
      * @param resultCode
      */
     public void setResultCode(ResultCode resultCode) {
-        this.resultCode = resultCode.getValue();
+        this.resultCode = resultCode != null ? resultCode.getValue() : null;
     }
 
     /**

Integration/org.egovframe.rte.itl.webservice/src/test/java/org/egovframe/rte/itl/webservice/EgovWebServiceMessageHeaderNullResultCodeTest.java

@@ -0,0 +1,53 @@
+package org.egovframe.rte.itl.webservice;
+
+import jakarta.xml.bind.JAXBContext;
+import jakarta.xml.bind.Unmarshaller;
+import org.egovframe.rte.itl.integration.EgovIntegrationMessageHeader;
+import org.egovframe.rte.itl.integration.message.simple.SimpleMessageHeader;
+import org.junit.jupiter.api.Test;
+
+import javax.xml.transform.stream.StreamSource;
+import java.io.StringReader;
+
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNull;
+
+public class EgovWebServiceMessageHeaderNullResultCodeTest {
+
+    /** SOAP 요청 헤더에 resultCode 가 없는 경우를 JAXB 언마샬로 재현한다. */
+    private EgovWebServiceMessageHeader unmarshalRequestHeaderWithoutResultCode() throws Exception {
+        String xml = "<egovWebServiceMessageHeader>"
+                + "<integrationId>test</integrationId>"
+                + "<providerOrganizationId>org0</providerOrganizationId>"
+                + "</egovWebServiceMessageHeader>";
+        JAXBContext ctx = JAXBContext.newInstance(EgovWebServiceMessageHeader.class);
+        Unmarshaller unmarshaller = ctx.createUnmarshaller();
+        return unmarshaller.unmarshal(new StreamSource(new StringReader(xml)),
+                EgovWebServiceMessageHeader.class).getValue();
+    }
+
+    @Test
+    public void readSideToleratesMissingResultCode() throws Exception {
+        EgovWebServiceMessageHeader requestHeader = unmarshalRequestHeaderWithoutResultCode();
+        assertNotNull(requestHeader.getIntegrationId());
+        assertNull(requestHeader.getResultCode());
+        System.out.println("unmarshalled getResultCode() = " + requestHeader.getResultCode());
+    }
+
+    /** ServiceBridgeImpl.doService() 가 응답 헤더를 만들 때 쓰는 복사 생성자. */
+    @Test
+    public void copyConstructorAcceptsHeaderWithoutResultCode() throws Exception {
+        EgovWebServiceMessageHeader requestHeader = unmarshalRequestHeaderWithoutResultCode();
+        EgovWebServiceMessageHeader responseHeader = new EgovWebServiceMessageHeader(requestHeader);
+        assertNull(responseHeader.getResultCode());
+    }
+
+    /** 형제 구현은 같은 복사 연산을 null 로 수행한다. */
+    @Test
+    public void siblingSimpleMessageHeaderCopiesNullResultCode() {
+        SimpleMessageHeader src = new SimpleMessageHeader();
+        EgovIntegrationMessageHeader copy = new SimpleMessageHeader(src);
+        assertNull(copy.getResultCode());
+        System.out.println("SimpleMessageHeader copy OK, resultCode = " + copy.getResultCode());
+    }
+}