一些格式的错误

src/main/java/edu/nju/dao/ReviewAnswerDao.java

@@ -40,7 +40,7 @@ public class ReviewAnswerDao {
         Query query = new Query();
         query.addCriteria(Criteria.where("_id").is(id));
         List<ReviewAnswer> list = mongoOperations.find(query, ReviewAnswer.class);
-        if(list.size() == 0 || list == null) {return null;}
+        if(list == null||list.size() == 0) {return null;}
         return list.get(0);
     }
 

src/main/java/edu/nju/dao/ReviewCorrectAnswerDao.java

@@ -35,7 +35,7 @@ public class ReviewCorrectAnswerDao {
         Query query = new Query();
         query.addCriteria(Criteria.where("_id").is(id));
         List<ReviewCorrectAnswer> list = mongoOperations.find(query, ReviewCorrectAnswer.class);
-        if(list.size() == 0 || list == null) {return null;}
+        if(list == null||list.size() == 0) {return null;}
         return list.get(0);
     }
 }

src/main/java/edu/nju/dao/ReviewGroupDao.java

@@ -26,7 +26,7 @@ public class ReviewGroupDao {
         Query query = new Query();
         query.addCriteria(Criteria.where("workers_id").is(worker_id).and("job_id").is(job_id));
         List<ReviewGroup>list = mongoOperations.find(query, ReviewGroup.class);
-        if(list.size() == 0 || list == null) {return null;}
+        if(list == null||list.size() == 0) {return null;}
         return list.get(0).getReport_id();
     }
 
@@ -40,7 +40,7 @@ public class ReviewGroupDao {
         Query query = new Query();
         query.addCriteria(Criteria.where("report_id").is(reportIds));
         List<ReviewGroup>list = mongoOperations.find(query, ReviewGroup.class);
-        if(list.size() == 0 || list == null) {return null;}
+        if(list == null||list.size() == 0) {return null;}
         return list.get(0);
     }
 

src/main/java/edu/nju/dao/ReviewJobDao.java

@@ -21,7 +21,7 @@ public class ReviewJobDao {
         Query query = new Query();
         query.addCriteria(Criteria.where("_id").is(id));
         List<ReviewJob> list = mongoOperations.find(query,ReviewJob.class);
-        if(list.size() == 0 || list == null) {return null;}
+        if(list == null||list.size() == 0  ) {return null;}
         return list.get(0);
     }
 
@@ -29,7 +29,7 @@ public class ReviewJobDao {
         Query query = new Query();
         query.addCriteria(Criteria.where("exam_id").is(examId).and("case_id").is(caseId));
         List<ReviewJob> list = mongoOperations.find(query,ReviewJob.class);
-        if(list.size() == 0 || list == null) {return null;}
+        if(list == null||list.size() == 0) {return null;}
         return list.get(0);
     }
 

src/main/java/edu/nju/dao/ReviewPaperDao.java

@@ -21,7 +21,7 @@ public class ReviewPaperDao {
         Query query = new Query();
         query.addCriteria(Criteria.where("_id").is(id));
         List<ReviewPaper> list = mongoOperations.find(query,ReviewPaper.class);
-        if(list.size() == 0 || list == null) {return null;}
+        if(list == null||list.size() == 0 ) {return null;}
         return list.get(0);
     }
 

src/main/java/edu/nju/dao/ReviewPaperJsonDao.java

@@ -20,7 +20,7 @@ public class ReviewPaperJsonDao {
         Query query = new Query();
         query.addCriteria(Criteria.where("paper_id").is(paperId));
         List<ReviewPaperJson> list = mongoOperations.find(query,ReviewPaperJson.class);
-        if(list.size() == 0 || list == null) {return null;}
+        if(list == null||list.size() == 0 ) {return null;}
         return list.get(0);
     }
 

src/main/java/edu/nju/dao/ReviewReportDao.java

@@ -20,7 +20,7 @@ public class ReviewReportDao {
         Query query = new Query();
         query.addCriteria(Criteria.where("_id").is(id));
         List<ReviewReport> list = mongoOperations.find(query,ReviewReport.class);
-        if(list.size() == 0 || list == null) {return null;}
+        if(list == null||list.size() == 0) {return null;}
         return list.get(0);
     }
 
@@ -28,7 +28,7 @@ public class ReviewReportDao {
         Query query = new Query();
         query.addCriteria(Criteria.where("paper_id").is(paperId).and("original_id").is(originalId));
         List<ReviewReport> list = mongoOperations.find(query,ReviewReport.class);
-        if(list.size() == 0 || list == null) {return null;}
+        if(list == null||list.size() == 0) {return null;}
         return list.get(0);
     }
 

src/main/java/edu/nju/dao/ReviewWorkerDao.java

@@ -27,7 +27,7 @@ public class ReviewWorkerDao {
         Query query = new Query();
         query.addCriteria(Criteria.where("original_id").is(originalId).and("job_id").is(jobId));
         List<ReviewWorker> list = mongoOperations.find(query,ReviewWorker.class);
-        if(list.size() == 0 || list == null) {return null;}
+        if(list == null||list.size() == 0) {return null;}
         return list.get(0);
     }
 
@@ -48,7 +48,7 @@ public class ReviewWorkerDao {
         Query query = new Query();
         query.addCriteria(Criteria.where("_id").is(id));
         List<ReviewWorker> list = mongoOperations.find(query,ReviewWorker.class);
-        if(list.size() == 0 || list == null) {return null;}
+        if(list == null||list.size() == 0) {return null;}
         return list.get(0);
     }