首先感谢之前帮助过我的人。

我目前遇到的问题是这行代码

    statement.executeUpdate(myTableName);

或使用这些代码行

    String myTableName = "CREATE TABLE AgentDetail (" 
        + "idNo INT(64) NOT NULL AUTO_INCREMENT,"  
        + "initials VARCHAR(2)," 
        + "agentDate DATE,"  
        + "agentCount INT(64))";  

当它的代码到达这些点时，它会生成一个错误，该错误会被 SQLException block 捕获。

要么很简单，要么很复杂

谁能指出这个 Java MySQL 编程新手在哪里犯了错误，希望没有错误，在此先感谢

这是完整的其余代码

    public class DbStuff {
    private String jdbcDriver = "com.mysql.jdbc.Driver";
    private String dbAddress = "jdbc:mysql://localhost:3306/";
    private String userPass = "?user=root&password=";
    private String dbName = "TIGER19";
    private String userName = "root";
    private String password = "";

    private PreparedStatement preStatement;
    private Statement statement;
    private ResultSet result;
    private Connection con;

    public DbStuff() {
        try {
            Class.forName(jdbcDriver);
            con = DriverManager.getConnection(dbAddress + dbName, userName, password);
        } 
        catch (ClassNotFoundException e) {
            e.printStackTrace();
        } 
        catch (SQLException e) {
            createDatabase();
            createTableCub1();
        }
    }

    private void createDatabase() {
        try {
            Class.forName(jdbcDriver);
            con = DriverManager.getConnection(dbAddress + userPass);
            Statement s = con.createStatement();
            int myResult = s.executeUpdate("CREATE DATABASE IF NOT EXISTS " + dbName);
        } 
        catch (ClassNotFoundException | SQLException e) {
            e.printStackTrace();
        }
    }

    private void createTableCub1() {
        String myTableName = "CREATE TABLE AgentDetail (" 
            + "idNo INT(64) NOT NULL AUTO_INCREMENT,"  
            + "initials VARCHAR(2)," 
            + "agentDate DATE,"  
            + "agentCount INT(64))";  
        try {
            Class.forName(jdbcDriver);
            con = DriverManager.getConnection(dbAddress + dbName, userName, password);
            statement = con.createStatement();
            //The next line has the issue
            statement.executeUpdate(myTableName);
            System.out.println("Table Created");
        }
        catch (SQLException e ) {
            System.out.println("An error has occurred on Table Creation");
        }
        catch (ClassNotFoundException e) {
            System.out.println("An Mysql drivers were not found");
        }
    }
    }

最佳答案

首先感谢您的帮助和建议。这确实很有帮助。 因此，我设法学会了三件事，

• 如何编写有关如何创建表格的正确说明。
• 如何在 Java 中创建 MySQL 表。
• Smit说的，就是读取e.printStackTrace()的信息。

这是我想出的代码。

private void createTableCub1() {
    String myTableName = "CREATE TABLE AgentDetail (" 
            + "idNo INT(64) NOT NULL AUTO_INCREMENT,"  
            + "initials VARCHAR(2)," 
            + "agentDate DATE,"  
            + "agentCount INT(64), "
            + "PRIMARY KEY(idNo))";  
    try {
        Class.forName(jdbcDriver);
        con = DriverManager.getConnection(dbAddress + dbName, userName, password);
        statement = con.createStatement();
        //This line has the issue
        statement.executeUpdate(myTableName);
        System.out.println("Table Created");
    }
    catch (SQLException e ) {
        System.out.println("An error has occured on Table Creation");
        e.printStackTrace();
    }
    catch (ClassNotFoundException e) {
        System.out.println("An Mysql drivers were not found");
    }
}

当然，我欢迎并感谢任何和所有的反馈

关于Java 在 MySQL 数据库中创建表，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/19016363/