修bug

src/main/java/com/lh/service/CrowdfundingServiceImpl.java

@@ -49,7 +49,7 @@ public class CrowdfundingServiceImpl implements CrowdfundingService {
     @Transactional(rollbackFor = Exception.class)
     public void addCrowdUser(Participant participant) throws MyException {
         //精网号重复
-        if (crowdfundingMapper.queryCrowdUser(new Participant(null,participant.getJwcode(),null,null)) != null) {
+        if (!crowdfundingMapper.queryCrowdUser(participant).isEmpty()) {
             throw new MyException("精网号重复");
         }
         //精网号不能为空