Question

我有这个表，我添加到表中的行越多，表和表格上方的文本之间形成的空间就越多。

$qq=mysql_query("SELECT * FROM piatto");
echo "<table border=1>
<tr>
<th>ID</th>
<th>Nome</th>
<th>Descrizione</th>
<th>Tempo</th>``
<th>Prezzo</th>
<th>quantita</th>
</tr>";

while($cicle=mysql_fetch_array($qq)){ 

    echo "<tr>";
    echo "<td>".  $cicle['id']."</td>"; 
    echo "<td>".  $cicle['titolo']."</td>"; 
    echo "<td>".  $cicle['descrizione']."</td>"; 
    echo "<td>".  $cicle['tempo_preparazione']."</td>"; 
    echo "<td>".  $cicle['prezzo']."</td>"; 
    echo "<td>".  $cicle['quantita']."</td>"; 
    echo "</tr>";
    echo "<br />";  

}    
echo "</table>" ;
echo"<br />";`enter code here`

我该如何解决这个问题？

Answer 1

表格中private final static Pattern PATTERN = Pattern.compile("(.*)([+-])(.*)i"); // ... String complexInput = get.next(); final Matcher matcher = PATTERN.matcher(complexInput); if (matcher.find()) { final double imgSign = matcher.group(2).equals("+") ? 1D : -1D; final double real = Double.parseDouble(matcher.group(1)); final double img = Double.parseDouble(matcher.group(3)); return new Complex(real, imgSign * img); }的原因是什么？因为它没有包含在public class Driver { private final static Pattern PATTERN = Pattern.compile("(.*)([+-])(.*)i"); private static final int CHOICE_EXIT = 5; private static final int CHOICE_ADD = 1; public static void main(String[] args) { Scanner get = new Scanner(System.in); int choice; Complex c1; Complex c2; while (true) { try { printInfoAboutChoice(); choice = get.nextInt(); if (choice == CHOICE_EXIT) { break; } System.out.println("Enter first complex number: "); c1 = getComplexFromString(get.next()); System.out.println("Enter Second complex number: "); c2 = getComplexFromString(get.next()); } catch (RuntimeException e) { System.err.println(e.getMessage()); continue; } switch (choice) { case CHOICE_ADD: { Complex c3 = c1.add(c2); System.out.println(c3.toString()); } // TODO others methods... } } } private static Complex getComplexFromString(String complexInput) throws IllegalFormatException { final Matcher matcher = PATTERN.matcher(complexInput); if (matcher.find()) { final double imgSign = matcher.group(2).equals("+") ? 1D : -1D; final double real = Double.parseDouble(matcher.group(1)); final double img = Double.parseDouble(matcher.group(3)); return new Complex(real, imgSign * img); } throw new IllegalArgumentException("Bad complex number input"); } private static void printInfoAboutChoice() { System.out.println("Please type your choice and enter : "); System.out.println("1.Add Two Complex Numbers"); System.out.println("2.Substract Two Complex Numbers"); System.out.println("3.Multiply Two Complex Numbers"); System.out.println("4.Divide Two Complex Numbers"); System.out.println("5.Exit Program"); } }中，所以它不会作为表格的一部分包含在内，而是实际显示在表格的上方。由于<br />是你的while循环的一部分，你拥有的行越多，你在桌子上方就会有更多的休息。

如果您想增加行之间的间距，请使用CSS或只包含一个空表行。

如何删除文本和表格之间的空格？

1 个答案: