db and internal's implementation

src/main/java/minsecurity/identity/persist/sqlite/Sqlite.java

@@ -64,12 +64,13 @@ public class Sqlite {
         Statement stmt = null;
         try{
             String homePath = SqliteUtil.home();
-            homePath += "/min/identity";
+            homePath += "/min/identity/";
             String dbPath = homePath;
             if (!SqliteUtil.pathExists(dbPath)){
                 new File(dbPath).mkdirs();
             }
             String real_db_file = dbPath + db_file;
+            Class.forName("org.sqlite.JDBC");
             c = DriverManager.getConnection("jdbc:sqlite:" + real_db_file);
             stmt = c.createStatement();
             stmt.executeUpdate(table_create);
@@ -91,6 +92,7 @@ public class Sqlite {
                 new File(filePath).mkdirs();
             }
             String real_db_file = filePath + db_file;
+            Class.forName("org.sqlite.JDBC");
             c = DriverManager.getConnection("jdbc:sqlite:" + real_db_file);
             stmt = c.createStatement();
             stmt.executeUpdate(table_create);
@@ -104,10 +106,11 @@ public class Sqlite {
         }
     }
 
-    public Connection getConn() throws SQLException {
+    public Connection getConn() throws Exception {
         Connection c = null;
         try{
             String real_db_file = db_path + db_file;
+            Class.forName("org.sqlite.JDBC");
             c = DriverManager.getConnection("jdbc:sqlite:" + real_db_file);
             // TODO 设置数据库最大连接数
             return c;