尝试使用 microsoft access 和 eclipse 在数据库中创建记录时出现此错误。
[Microsoft][ODBC Microsoft Access Driver]COUNT field incorrect
并且显示的连接已关闭。这是我连接到 ODBC 驱动程序的代码。
public class DBController {
private Connection con;
public void setUp(String dsn) {
try {
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
} catch (Exception e) {
System.out.println("Load driver error");
}
try {
String s = "jdbc:odbc:" + dsn;
con = DriverManager.getConnection(s, "", "");
} catch (Exception e) {
e.printStackTrace();
}
}
public ResultSet readRequest(String dbQuery) {
ResultSet rs = null;
try {
Statement stmt = con.createStatement();
rs = stmt.executeQuery(dbQuery);
} catch (Exception e) {
e.printStackTrace();
}
return rs;
}
public int updateRequest(String dbQuery) {
int count = 0;
try {
Statement stmt = con.createStatement();
count = stmt.executeUpdate(dbQuery);
} catch (Exception e) {
e.printStackTrace();
}
return count;
}
public void terminate() {
try {
con.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
这些是我创建用户的代码。
public boolean createUser() {
boolean success = false;
DBController db = new DBController();
db.setUp("IT Innovation Project");
String sql = "INSERT INTO forumUsers(users_userName,users_password,users_NRIC,users_securityQuestion,users_answer) ";
sql += "VALUES ('" + userName + "','" + pwd + "','" + nric + "','"
+ securityQuestion + "','" + answer + "')";
System.out.println(sql);
if (db.updateRequest(sql) == 1)
success = true;
db.terminate();
return success;
}
我已经按照数据库表列重新排列了序列,但它仍然显示计数字段不正确的错误。那么我该如何解决呢?任何帮助将不胜感激。这是我的挥杆。
public void submitSignup(ActionEvent e) {
String userName = jTextField_userName.getText();
String pwd = new String(jPasswordField.getPassword());
String nric = jTextField_nric.getText();
String securityQuestion = jComboBox_securityQuestion.getSelectedItem()
.toString();
String answer = jTextField_answer.getText();
if (userName.equals("") || pwd.equals("") || nric.equals("")
|| securityQuestion.equals("") || answer.equals(""))
JOptionPane.showMessageDialog(null, "Please enter all text field");
else {
eForumUser user = new eForumUser(userName, pwd, nric,
securityQuestion, answer);
if (user.isExist())
JOptionPane.showMessageDialog(null,
"User already exists! Cannot create.");
else {
if (user.createUser() == true)
;
JOptionPane.showMessageDialog(null,
"User record created successfull!");
}
}
}