update:backend

pom.xml

@@ -22,7 +22,7 @@
 			<artifactId>sentistrength_backend</artifactId>
 			<version>1.0</version>
 			<scope>system</scope>
-			<systemPath>${project.basedir}/lib/sentiStrength-v1.0.18.jar</systemPath>
+			<systemPath>${project.basedir}/lib/sentiStrength-v1.0.19.jar</systemPath>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>

src/main/java/com/sentistrength/service/Impl/dataMining/DataMiningServiceImpl.java

@@ -75,6 +75,9 @@ public class DataMiningServiceImpl implements DataMiningService {
             throw new MyServiceException("DS001", "Arff文件为空");
         }
         outFile = uk.ac.wlv.wkaclass.Arff.deleteColumnFromArff(inFile,removeDataColumnVO.getColToRemove());
+        if (outFile == null){
+            throw new MyServiceException("DS002", "Arff文件删除列出错");
+        }
         return outFile;
     }