Question

我在将sqlserver与jdbc连接时遇到麻烦。我试图用很多提示谷歌修复它，但没有成功。错误是：

“无法打开登录名请求的数据库“ ShoppingWeb”。登录名失败了ClientConnectionId：0a0dc93b-85e3-46d1-89f8-045bde4984c5“

请帮帮我。 Tks阅读！

这是我的代码：

public class ConnectDB {

    public ConnectDB() {
    }

    private static String DB_URL = "jdbc:sqlserver://localhost;"
            + "databaseName=ShoppingWeb;"
            + "integratedSecurity=true";
    private static String USER_NAME = "sa";
    private static String PASSWORD = "123";



    public static void main(String[] args){

        try {

            // i had aslo try with 
            //Connection con = getConnection(DB_URL, USER_NAME, PASSWORD);
            // but i got the same error

            Connection con = getConnection(DB_URL);
            Statement stmt;
            stmt = con.createStatement();
            ResultSet rs = stmt.executeQuery("select * from DanhMuc");
            // show data
            while (rs.next()) {
                System.out.println(rs.getInt(1) + "  " + rs.getString(2)
                        + "  " + rs.getString(3));
            }

            // close connection
            con.close();

        } catch (SQLException ex) {
            Logger.getLogger(ConnectDB.class.getName()).log(Level.SEVERE, null, ex);
        }


    }

     // public static Connection getConnection(String dbURL, String userName, 
            String password) throws SQLException
    public static Connection getConnection(String dbURL) throws SQLException {
        Connection con = null;

        try {
             Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
            // con = DriverManager.getConnection(dbURL, userName, password);
            con = DriverManager.getConnection(dbURL);
            System.out.println("Connect success");
        } catch (ClassNotFoundException ex) {
            Logger.getLogger(ConnectDB.class.getName()).log(Level.SEVERE, null, ex);
        } 

        return con;
    }
}

Answer 1

也许，您可以尝试以下方法：

    private static String DB_URL = "jdbc:mysql://HOST:PORT/DB_NAME?useUnicode=true&characterEncoding=UTF-8&useSSL=true";
    private static String USER_NAME = "USE_NAME";
    private static String PASSWORD = "PASSWORD";

    @Test
    public void contextLoads() {
        try {
            Connection con = getConnection(DB_URL);
            Statement stmt;
            stmt = con.createStatement();
            ResultSet rs = stmt.executeQuery("select * from user");
            // show data
            while (rs.next()) {
                System.out.println(rs.getInt(1) + "  " + rs.getString(2)
                        + "  " + rs.getString(3));
            }
            con.close();
        } catch (SQLException ex) {
        }
    }
    public static Connection getConnection(String dbURL) throws SQLException {
        Connection con = null;
        try {
            Class.forName("com.mysql.cj.jdbc.Driver");
             con = DriverManager.getConnection(dbURL, USER_NAME, PASSWORD);
            System.out.println("Connect success");
        } catch (ClassNotFoundException ex) {
        }
        return con;
    }

如何修复登录名要求的“无法打开数据库“ DATABASENAME”

1 个答案: