import com.sun.xml.internal.ws.wsdl.SDDocumentResolver; //导入依赖的package包/类
/**
 * Gets closure of all the referenced documents from the primary document(typically
 * the service WSDL). It traverses the WSDL and schema imports and builds a closure
 * set of documents.
 *
 * @param systemId primary wsdl or the any root document
 * @param resolver used to get SDDocumentImpl for a document
 * @param onlyTopLevelSchemas if true, the imported schemas from a schema would be ignored
 * @return all the documents
 */
public static Map<String, SDDocument> getMetadataClosure(@NotNull String systemId,
        @NotNull SDDocumentResolver resolver, boolean onlyTopLevelSchemas) {
    Map <String, SDDocument> closureDocs = new HashMap<String, SDDocument>();
    Set<String> remaining = new HashSet<String>();
    remaining.add(systemId);

    while(!remaining.isEmpty()) {
        Iterator<String> it = remaining.iterator();
        String current = it.next();
        remaining.remove(current);

        SDDocument currentDoc = resolver.resolve(current);
        SDDocument old = closureDocs.put(currentDoc.getURL().toExternalForm(), currentDoc);
        assert old == null;

        Set<String> imports =  currentDoc.getImports();
        if (!currentDoc.isSchema() || !onlyTopLevelSchemas) {
            for(String importedDoc : imports) {
                if (closureDocs.get(importedDoc) == null) {
                    remaining.add(importedDoc);
                }
            }
        }
    }

    return closureDocs;
}
 

import com.sun.xml.internal.ws.wsdl.SDDocumentResolver; //导入依赖的package包/类
void setResolver(SDDocumentResolver sddocResolver) {
    this.sddocResolver = sddocResolver;
}