fix

code/sapparent/sapservice/src/main/java/org/fouram/service/SapMessageUserService.java

@@ -21,11 +21,14 @@ public class SapMessageUserService extends BaseService {
 	}
 
 	public void saveOne(String userId) throws Exception {
+		SapUser sapUser = sapUserService.selectByUserId(userId);
+		if (sapUser == null) {
+			throwPromptException("参数userId未获取到对应用户");
+		}
 		SapMessageUser sapMessageUser = selectByUserId(userId);
 		if (sapMessageUser != null) {
 			throwPromptException("该用户已保存");
 		}
-		SapUser sapUser = sapUserService.selectByUserId(userId);
 		sapMessageUser = SapMessageUser.builder().userId(userId).name(sapUser.getName()).createDate(new Date()).build();
 		save("SapMessageUserMapper.saveOne", sapMessageUser);
 	}