Question

我的代码是 -

package textmessenger;
import java.sql.*;


public class Main {


    public static void main(String[] args) {
        // TODO code application logic here
        try {
        String con = "jdbc:mysql://SQL09.FREEMYSQL.NET:3306/a5189576";
        Connection connection = null;

        Statement statement = null;

        ResultSet rs = null;
        int updateQuery = 0;

            Class.forName("com.mysql.jdbc.Driver").newInstance();
            connection = DriverManager.getConnection(con, "user", "pwd");
            statement = connection.createStatement();
            String QueryString = "select * from names";
            rs = statement.executeQuery(QueryString);
            System.out.println("Executed");
        }
        catch(Exception ex){
            ex.printStackTrace();
            }
        }
    }

当我运行此程序时，输出中出现“Error”。我哪里错了？我在NetBeans中尝试过SQL编辑器，它在那里工作得非常好。在此先感谢：）

Answer 1

从您现在发布的堆栈跟踪中，您需要下载MySQL JDBC驱动程序并将其包含在您的项目中：

http://dev.mysql.com/downloads/connector/j/

我无法在Java中进行SQL查询

1 个答案: