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我想創建表並向其中插入一些值。我試圖做到這一點使用H2數據庫和sql2o框架下面的代碼:插入sql2o時出錯
public class Main {
private static final String DB_DRIVER = "org.h2.Driver";
private static final String DB_CONNECTION = "jdbc:h2:~/test";
private static final String DB_USER = "";
private static final String DB_PASSWORD = "";
static String TABLE = "PERSONS";
static Sql2o sql2o;
public static void main(String[] args) throws Exception, SQLException {
sql2o = new Sql2o(DB_CONNECTION, DB_USER, DB_PASSWORD);
createTable();
insertIntoTable();
}
public static void createTable() {
final String tableSql = "CREATE TABLE IF NOT EXISTS " + TABLE + " (id int, name varchar(255))";
try (org.sql2o.Connection con = sql2o.beginTransaction()) {
con.createQuery(tableSql).executeUpdate();
con.commit();
con.close();
}
}
public static void insertIntoTable() {
String insertSql = "insert into " + TABLE + " values (:id, :name)";
try (org.sql2o.Connection con = sql2o.open()) {
con.createQuery(insertSql).addParameter("id", 1).addParameter("name", "test").executeUpdate();
con.close();
}
}
}
而且畢竟我得到一個錯誤:
Error preparing statement - Column count does not match; SQL statement: insert into PERSONS values (?, ?) [21002-191]
的SQL語句是正確的,名稱和類型的列匹配對方,我真的不明白是什麼問題。
我無法重現您的問題。我使用H2和sql2o的最新生產版本將代碼複製並粘貼到Maven項目中,並且它工作正常。嘗試刪除您的H2數據庫文件或在代碼的開頭髮布「DROP TABLE PERSONS」。 –
哦,我真的忘了放桌子了!謝謝,現在它工作! – Amir