小编sae*_*.sh的帖子

我想用Java执行查询.

我创建了一个连接.然后我想执行一个INSERT语句,完成后,连接关闭,但我想通过连接执行一些insert语句,当循环完成然后关闭连接.

我能做什么 ？

我的示例代码是:

public NewClass() throws SQLException {
    try {
        Class.forName("oracle.jdbc.driver.OracleDriver");
    } catch (ClassNotFoundException e) {
        System.out.println("Where is your Oracle JDBC Driver?");
        return;
    }
    System.out.println("Oracle JDBC Driver Registered!");

    Connection connection = null;
    try {
        connection = DriverManager.getConnection(
                "jdbc:oracle:thin:@localhost:1521:orcl1", "test",
                "oracle");
    } catch (SQLException e) {
        System.out.println("Connection Failed! Check output console");
        return;
    }

    if (connection != null) {
        Statement stmt = connection.createStatement();
        ResultSet rs = stmt.executeQuery("SELECT * from test.special_columns");
        while (rs.next()) {
            this.ColName = rs.getNString("column_name"); …