如何创建动态的SQLite数据库表
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发布时间:2022-04-10 02:30
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时间:2022-04-10 04:00
public FontDaoImpl(){
//在构造方法里边进行判断,看是否在sqlite里边有tb_font这张表,如果没有的话,在sqlite里面自动创建表
try {
conn = DBConnection.getConnection(Constants.DATABASE_PATH_STYLE);
final int cnt = conn
.prepareStatement(
"SELECT COUNT(*) as CNT FROM sqlite_master where type='table' and name='TB_FONT'")
.executeQuery().getInt(1);
if (cnt != 1) {
statement = conn.createStatement();
statement
.execute("CREATE TABLE TB_FONT (id integer primary key autoincrement, name NVARCHAR2(20),description NVARCHAR2(1000),fontSize number(20),textBorderColor NVARCHAR2(10),textBackgroundColor NVARCHAR2(10),textColor NVARCHAR2(10),isDefault NVARCHAR2(4))");
//statement.execute("CREATE UNIQUE INDEX id ON TB_CURVELINE (id)");
statement.close();
}
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} finally {
DBConnection.closeConnection(conn);
}
}