....

src/main/java/cn/com/qmth/examcloud/commons/util/UrlUtil.java

@@ -141,7 +141,7 @@ public class UrlUtil {
 	public static String joinUrl(String... fragments) {
 		StringBuilder sb = new StringBuilder();
 		for (int i = 0; i < fragments.length; i++) {
-			String cur = fragments[i];
+			String cur = fragments[i].trim();
 			if (cur.endsWith("/")) {
 				cur = cur.substring(0, cur.length() - 1);
 			}