一个SQLException
import java.sql.Connection;import java.sql.DriverManager;import java.sql.ResultSet;import java.sql.Statement;public class test { public static void main(String[] args) { String driverName = "com.microsoft.sqlserver.jdbc.SQLServerDriver"; String dbURL = "jdbc:sqlserver://localhost:1433;DatabaseName=UserForChat"; //String driverName = "com.microsoft.jdbc.sqlserver.SQLServerDriver"; //String dbURL = "jdbc:microsoft:sqlserver://localhost:1433;DatabaseName=JSP1"; String userName = "sa"; // 默认用户名 String userPwd = "xiaoguo"; // 密码 try { Class.forName(driverName); Connection dbConn = DriverManager.getConnection(dbURL, userName, userPwd); System.out.println("连接成功!"); // 如果连接成功,控制台输出“连接成功!” Connection con = DriverManager.getConnection("jdbc:","", ""); // 创建一个可执行的SQL描述 Statement stmt = con.createStatement(); ResultSet rs = stmt.executeQuery("SELECT * FROM UserMsg"); } catch (Exception e) { //System.out.println("连接失败!"); e.printStackTrace(); } }}