diff --git a/src/com/hellogithub/dao/githubDao.java b/src/com/hellogithub/dao/githubDao.java
index 8d0e399..d675684 100644
--- a/src/com/hellogithub/dao/githubDao.java
+++ b/src/com/hellogithub/dao/githubDao.java
@@ -4,6 +4,7 @@ import com.hellogithub.entity.githubEntity;
 import com.hellogithub.entity.projectEntity;
 import com.hellogithub.entity.userEntity;
 import com.hellogithub.utils.JdbcUtils;
+import com.mysql.cj.jdbc.JdbcConnection;
 import org.apache.commons.dbutils.QueryRunner;
 import org.apache.commons.dbutils.handlers.BeanListHandler;
 
@@ -19,36 +20,46 @@ public class githubDao {
     public int ins_Github_info (int projectId, String avatar,String name, String starImgUrl, int starCount, String mainLanguage, String isActive, int subscriber, int issues, String isOrganization, String defaultBranch, int forks, String protocol, String version){
         PreparedStatement preparedStatement = null;
         Connection connection = null;
-        int rs = 0 ;
+        ResultSet rs = null;
+        String sql1 = "SELECT * FROM githubinfo WHERE projectId = ?;";
+        int back = 0 ;
         try {
-            connection = JdbcUtils.getConnection();
-            String Sql = "INSERT INTO githubinfo(id,projectId,avatar,name,starImgUrl,starCount,mainLanguage,isActive,subscriber,issues,isOrganization,defaultBranch,forks,protocol,version,isVaild) VALUES(null,?,?,?,?,?,?,?,?,?,?,?,?,?,?,0);";
-            preparedStatement = connection.prepareStatement(Sql);
-            preparedStatement.setInt(1, projectId);
-            preparedStatement.setString(2, avatar);
-            preparedStatement.setString(3, name);
-            preparedStatement.setString(4, starImgUrl);
-            preparedStatement.setInt(5, starCount);
-            preparedStatement.setString(6, mainLanguage);
+            Connection conn = JdbcUtils.getConnection();
+            PreparedStatement prep = conn.prepareStatement(sql1);
+            prep.setInt(1,projectId);
+            rs = prep.executeQuery();
+            if(rs == null){
+                connection = JdbcUtils.getConnection();
+                String Sql = "INSERT INTO githubinfo(id,projectId,avatar,name,starImgUrl,starCount,mainLanguage,isActive,subscriber,issues,isOrganization,defaultBranch,forks,protocol,version,isVaild) VALUES(null,?,?,?,?,?,?,?,?,?,?,?,?,?,?,0);";
+                preparedStatement = connection.prepareStatement(Sql);
+                preparedStatement.setInt(1, projectId);
+                preparedStatement.setString(2, avatar);
+                preparedStatement.setString(3, name);
+                preparedStatement.setString(4, starImgUrl);
+                preparedStatement.setInt(5, starCount);
+                preparedStatement.setString(6, mainLanguage);
 
-            preparedStatement.setString(7, isActive);
-            preparedStatement.setInt(8, subscriber);
-            preparedStatement.setInt(9, issues);
-            preparedStatement.setString(10, isOrganization);
-            preparedStatement.setString(11, defaultBranch);
+                preparedStatement.setString(7, isActive);
+                preparedStatement.setInt(8, subscriber);
+                preparedStatement.setInt(9, issues);
+                preparedStatement.setString(10, isOrganization);
+                preparedStatement.setString(11, defaultBranch);
 
-            preparedStatement.setInt(12, forks);
-            preparedStatement.setString(13, protocol);
-            preparedStatement.setString(14, version);
-            rs = preparedStatement.executeUpdate();
-            return rs;
+                preparedStatement.setInt(12, forks);
+                preparedStatement.setString(13, protocol);
+                preparedStatement.setString(14, version);
+                back = preparedStatement.executeUpdate();
+            }else{
+                return back;
+            }
+            return back;
         } catch (Exception e) {
             e.printStackTrace();
 
         } finally {
             JdbcUtils.closeConnection(preparedStatement, connection);
         }
-        return rs;
+        return back;
     }
 
     public List<githubEntity> ret_Github_info(int projectid){