登录成功页面

package login.com;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

// 调用数据库，进行查询用户名和密码
public class LoginSuccess{
public boolean LoginSuccess(String username, String password) throws Exception {
boolean returnValue = false;
String sql = "SELECT * FROM user";
Connection conn = null;
Statement stmt = null;
ResultSet rs = null;

try {
conn = DBCONN.getConnection();
if (conn != null) {
System.out.println("数据库连接正常");
} else {
System.out.println("数据库连接异常");
}
stmt = conn.createStatement();
rs = stmt.executeQuery(sql);
rs.beforeFirst(); //移至第一条记录之前
while (rs.next()) {
String userName = rs.getString("username");
String passWord = rs.getString("password");
System.out.println("数据库取得用户名和密码"+username+"|"+password);
if (userName.equals(username) && passWord.equals(password)) {
// 如果用户名和密码都和数据库的一样，就返回true
returnValue = true;
break;
}
}
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}
return returnValue;

}
}