java - 如何在java中插入sql查询

Question

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Answer 1

B.addActionListener( new ActionListener( ) {
@Override
public void actionPerformed(ActionEvent e) {
try
{
    Class.forName("com.mysql.jdbc.Driver").newInstance();
    DriverManager.registerDriver( DriverManager.getDriver( "jdbc:mysql://localhost:3306/mysql" ) );

    Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/mysql", "root", "root");

    Statement st = con.createStatement();
   String rs = "insert into mysql57.addressbook" +"(fname,lname,addr,phonenum,id,email)" +"values(?,?,?,?,?,?)";

    System.out.println(532 );
    PreparedStatement preparedStatement = con.prepareStatement(rs);
    preparedStatement.setString(1, TUID.getText());
    preparedStatement.setString(2, tfn.getText());
    preparedStatement.setString(3, tln.getText());
    preparedStatement.setString(4, tpn.getText());
    preparedStatement.setString(5, tad.getText());
    preparedStatement.setString(6, tmail.getText());
    System.out.println(88 );
  preparedStatement.executeUpdate(rs);
  }
catch (Exception ex){
//Any exception caught will be logged here. 
ex.printStackTrace();
}

你的catch block 是空的，可能是有异常但是被吞掉了。