1 files changed, 9 insertions, 4 deletions
diff --git a/juick-core/src/main/java/com/juick/server/UserQueries.java b/juick-core/src/main/java/com/juick/server/UserQueries.java
index 13a330e5..0db929bd 100644
--- a/juick-core/src/main/java/com/juick/server/UserQueries.java
+++ b/juick-core/src/main/java/com/juick/server/UserQueries.java
@@ -18,6 +18,7 @@
 package com.juick.server;
 
 import com.juick.User;
+import org.springframework.dao.DuplicateKeyException;
 import org.springframework.dao.EmptyResultDataAccessException;
 import org.springframework.jdbc.core.JdbcTemplate;
 import org.springframework.jdbc.core.RowMapper;
@@ -73,13 +74,17 @@ public class UserQueries {
 
     public static int createUser(JdbcTemplate sql, String username, String password) {
         KeyHolder holder = new GeneratedKeyHolder();
-        sql.update(con -> {
-            PreparedStatement stmt = con.prepareStatement("INSERT INTO users(nick,passw) VALUES (?,?)",
-                    Statement.RETURN_GENERATED_KEYS);
+        try {
+            sql.update(con -> {
+                PreparedStatement stmt = con.prepareStatement("INSERT INTO users(nick,passw) VALUES (?,?)",
+                        Statement.RETURN_GENERATED_KEYS);
                 stmt.setString(1, username);
                 stmt.setString(2, password);
                 return stmt;
-        }, holder);
+            }, holder);
+        } catch (DuplicateKeyException e) {
+            return -1;
+        }
 
         int uid = holder.getKey().intValue();