相关疑难解决方法(0)

我收到错误"无法发布数据".

这是SSCCE

//package mysqltest;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.applet.Applet;
import java.awt.TextArea.*;
import java.sql.*;
import java.util.*;
import javax.swing.plaf.*;
import javax.swing.plaf.basic.*;
import java.net.*;
import java.applet.*;

    public class test extends JApplet {

      public JTextArea c;

      public void init() {

          c = new JTextArea();

          add(c);
          c.append("Looking for database...");

        Connection conn = null;
        Properties props = new Properties();
        String url = "jdbc:mysql://localhost:3306/";
        String dbName = "mystik";
        String driver = "com.mysql.jdbc.Driver";
        String userName = "root";
        String password = "";
        String loggedusername = getParameter("name"); …