* 优化代码

src/main/java/com/huiju/estateagents/service/impl/TaSalesBatchServiceImpl.java

 import com.huiju.estateagents.mapper.TaPosterMapper;
 import com.huiju.estateagents.mapper.TaSalesBatchMapper;
 import com.huiju.estateagents.service.ITaSalesBatchService;
+import org.apache.commons.collections.CollectionUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
         List<TaShareContent> shareContentList = shareContentService.getPostersForTarget(salesBatchId + "", "house");
 
         List<TaPoster> posterList = new ArrayList<>();
-        posterList.add(poster);
+        if(poster != null){
+            posterList.add(poster);
+        }
 
         result.setPosters(posterList);
         result.setShareContents(shareContentList);