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連接出錯：java.sql.SQLException：ORA-00917：缺少逗號

2012-03-08 291 views
4

我正在使用Java Servlets處理Web應用程序。我正在嘗試實現登錄，註銷和註冊功能，但我對如何讓所有工作都有點困惑。下面是登錄頁面的代碼：連接出錯：java.sql.SQLException：ORA-00917：缺少逗號

To change this template, choose Tools | Templates 
* and open the template in the editor. 
*/ 
package hw5package; 

import java.io.IOException; 
import java.io.PrintWriter; 
import java.sql.*; 
import java.util.UUID; 
import javax.servlet.ServletException; 
import javax.servlet.http.HttpServlet; 
import javax.servlet.http.HttpServletRequest; 
import javax.servlet.http.HttpServletResponse; 
import javax.servlet.http.HttpSession; 

/** 
* 
* @author Tyler 
*/ 
public class Login extends HttpServlet { 

/** 
* Processes requests for both HTTP 
* <code>GET</code> and 
* <code>POST</code> methods. 
* 
* @param request servlet request 
* @param response servlet response 
* @throws ServletException if a servlet-specific error occurs 
* @throws IOException if an I/O error occurs 
*/ 
protected void processRequest(HttpServletRequest request, HttpServletResponse response) 
     throws ServletException, IOException { 
    response.setContentType("text/html;charset=UTF-8"); 
    PrintWriter out = response.getWriter(); 
    try { 
     String driver = "oracle.jdbc.driver.OracleDriver"; 
     String url = "jdbc:oracle:thin:@cci-ora02.uncc.edu:1521:class"; 
     String username = "teverha4"; 
     String password = "qwe123"; 

     out.println("<html>"); 
     out.println("<head>"); 
     out.println("<title>ITIS 4166 Project</title>"); 
     out.println("</head>"); 
     out.println("<body>"); 
     out.println("<div align='center'>"); 
     out.println("<h1>ITIS 4166 Project - Login Page</h1>"); 
     out.println("<h2>by: Tyler Everhart</h2>"); 

     out.println("<br />"); 
     out.println("<br />"); 
     out.println("<br />"); 
     out.println("<br />"); 

     out.println("<table width='20%' border='1' cellspacing='1' cellpadding='1'>"); 
     out.println("<form id='loginForm' name='loginForm' method='POST'>"); 
     out.println("<tr>"); 
     out.println("<td bgcolor='006F13' align='left' colspan='2'><b>Login</b></td>"); 
     out.println("</tr>"); 

     out.println("<tr>"); 
     out.println("<td bgcolor='35D551' align='left'>Username:</td>"); 
     out.println("<td bgcolor='35D551'>"); 
     out.println("<input type='text' name='username' id='username' />"); 
     out.println("</td>"); 
     out.println("</tr>"); 
     String passUsername = request.getParameter("username"); 

     out.println("<tr>"); 
     out.println("<td bgcolor='35D551' align='left'>Password:</td>"); 
     out.println("<td bgcolor='35D551'>"); 
     out.println("<input type='password' name='pwd' id='pwd' />"); 
     out.println("</td>"); 
     out.println("</tr>"); 
     String passPwd = request.getParameter("pwd"); 

     out.println("<tr>"); 
     out.println("<td bgcolor='006F13' align='center' colspan='2'>"); 
     out.println("<input type='submit' value='Submit' onclick='loginValidation()' /> "); 
     out.println("<input type='reset' value='Reset' />"); 
     out.println("</td>"); 
     out.println("</tr>"); 
     out.println("</form>"); 
     out.println("</table>"); 
     out.println("<a href='Registration'>New User, Click Here to Register</a>"); 
     out.println("</div>"); 
     out.println("</body>"); 
     out.println("</html>"); 

     Class.forName(driver); 

     Connection connection = DriverManager.getConnection(url, username, password); 

     Statement statement = connection.createStatement(); 
     String query = "SELECT UserName, PassWord FROM UserLogin"; 

     ResultSet resultSet = statement.executeQuery(query); 

     HttpSession session = request.getSession(true); 

     while (resultSet.next()) { 
      if ((passUsername.equals(resultSet.getString("UserName")) && passPwd.equals(resultSet.getString("PassWord")))) { 
       String sessionID = UUID.randomUUID().toString(); 
       session.setAttribute("username", passUsername); 
       session.setAttribute("sessionID", sessionID); 
       response.sendRedirect("Categories"); 
      } 
      else if (passUsername.equals("") || passPwd.equals("")) { 
       out.println("Enter a username and password."); 
      } 
      else { 
       out.println("Either your username or password is incorrect or could not be found."); 
       out.println("Please try again, or click the link below to register."); 
      } 
     } 
    } 
    catch (ClassNotFoundException cnfe) { 
     System.err.println("Error loading driver: " + cnfe); 
     out.println("<tr>Error loading driver: " + cnfe + "</tr>"); 
    } 
    catch (SQLException sqle) { 
     System.err.println("Error with connection: " + sqle); 
     out.println("<tr>Error with connection: " + sqle + "</tr>"); 
    } 
    finally {    
     out.close(); 
    } 
} 

// <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code."> 
/** 
* Handles the HTTP 
* <code>GET</code> method. 
* 
* @param request servlet request 
* @param response servlet response 
* @throws ServletException if a servlet-specific error occurs 
* @throws IOException if an I/O error occurs 
*/ 
@Override 
protected void doGet(HttpServletRequest request, HttpServletResponse response) 
     throws ServletException, IOException { 
    processRequest(request, response); 
} 

/** 
* Handles the HTTP 
* <code>POST</code> method. 
* 
* @param request servlet request 
* @param response servlet response 
* @throws ServletException if a servlet-specific error occurs 
* @throws IOException if an I/O error occurs 
*/ 
@Override 
protected void doPost(HttpServletRequest request, HttpServletResponse response) 
     throws ServletException, IOException { 
    processRequest(request, response); 
} 

/** 
* Returns a short description of the servlet. 
* 
* @return a String containing servlet description 
*/ 
@Override 
public String getServletInfo() { 
    return "Short description"; 
}// </editor-fold>

}

下面是註冊頁面的代碼：

/* 
* To change this template, choose Tools | Templates 
* and open the template in the editor. 
*/ 
package hw5package; 

import java.io.IOException; 
import java.io.PrintWriter; 
import java.sql.*; 
import java.util.Random; 
import java.util.UUID; 
import javax.servlet.ServletException; 
import javax.servlet.http.HttpServlet; 
import javax.servlet.http.HttpServletRequest; 
import javax.servlet.http.HttpServletResponse; 
import javax.servlet.http.HttpSession; 

/** 
* 
* @author Tyler 
*/ 
public class Registration extends HttpServlet { 

/** 
* Processes requests for both HTTP 
* <code>GET</code> and 
* <code>POST</code> methods. 
* 
* @param request servlet request 
* @param response servlet response 
* @throws ServletException if a servlet-specific error occurs 
* @throws IOException if an I/O error occurs 
*/ 
protected void processRequest(HttpServletRequest request, HttpServletResponse response) 
     throws ServletException, IOException { 
    response.setContentType("text/html;charset=UTF-8"); 
    PrintWriter out = response.getWriter(); 
    try { 
     String driver = "oracle.jdbc.driver.OracleDriver"; 
     String url = "jdbc:oracle:thin:@cci-ora02.uncc.edu:1521:class"; 
     String username = "teverha4"; 
     String password = "qwe123"; 

     out.println("<html>"); 
     out.println("<head>"); 
     out.println("<title>ITIS 4166 Project</title>"); 
     out.println("</head>"); 
     out.println("<body>"); 
     out.println("<div align='center'>"); 
     out.println("<h1>ITIS 4166 Project - Registration Page</h1>"); 
     out.println("<h2>by: Tyler Everhart</h2>"); 

     out.println("<br />"); 
     out.println("<br />"); 
     out.println("<br />"); 
     out.println("<br />"); 

     out.println("<table width='25%' border='1' cellspacing='1' cellpadding='1'>"); 
     out.println("<tr>"); 
     out.println("<th bgcolor='006F13' align='left' colspan='2'>Register Account Information</th>"); 
     out.println("</tr>"); 

     out.println("<tr>"); 
     out.println("<td bgcolor='35D551' align='left'>Requested Username:</td>"); 
     out.println("<td bgcolor='35D551'>"); 
     out.println("<form id='enterForm' name='enterForm'>"); 
     out.println("<input type='text' name='requested_username' />"); 
     out.println("</td>"); 
     out.println("</tr>"); 
     String passUsername = request.getParameter("requested_username"); 

     out.println("<tr>"); 
     out.println("<td bgcolor='35D551' align='left'>Password:</td>"); 
     out.println("<td bgcolor='35D551'>"); 
     out.println("<input type='password' name='pwd' />"); 
     out.println("</td>"); 
     out.println("</tr>"); 
     String passPwd = request.getParameter("pwd"); 

     out.println("<tr>"); 
     out.println("<td bgcolor='35D551' align='left'>Confirm Password:</td>"); 
     out.println("<td bgcolor='35D551'>"); 
     out.println("<input type='password' name='pwd1' />"); 
     out.println("</td>"); 
     out.println("</tr>"); 
     String passPwd1 = request.getParameter("pwd1"); 

     out.println("<tr>"); 
     out.println("<td bgcolor='006F13' align='center' colspan='2'>"); 
     out.println("<input name='Submit' type='submit' value='Submit' /> "); 
     out.println("<input type='reset' value='Reset' />"); 
     out.println("</td>"); 
     out.println("</tr>"); 
     out.println("</form>"); 
     out.println("</table>"); 
     out.println("</div>"); 
     out.println("</body>"); 
     out.println("</html>"); 

     Class.forName(driver); 

     Connection connection = DriverManager.getConnection(url, username, password); 

     Statement statement = connection.createStatement(); 

     HttpSession session = request.getSession(); 

     if (passPwd.equals("") || passPwd1.equals("")) { 
      Integer registerError = Integer.valueOf(1); 
      session.setAttribute("registerError", registerError); 
      out.println("Please enter a valid password."); 
     } 
     else if (!passPwd.equals(passPwd1)) { 
      Integer registerError = Integer.valueOf(2); 
      session.setAttribute("registerError", registerError); 
      out.println("Your password and confirm password does not match."); 
     } 
     else { 
      String query2 = "INSERT INTO UserLogin (UserName, PassWord, StockAmt, TechnologyStock, UtilityStock) VALUES (?,?,?,?,?)"; 
      PreparedStatement stmt = connection.prepareStatement(query2); 
      stmt.setString(1, passUsername); 
      stmt.setString(2, passPwd); 
      stmt.setInt(3, 0); 
      stmt.setInt(4, 0); 
      stmt.setInt(5, 0); 
      stmt.executeQuery(); 
      session.setAttribute("sessionUsername", passUsername); 
      String sessionID = UUID.randomUUID().toString(); 

      Random StockID1 = new Random(); 
      StockID1.nextInt(10); 
      String insertDataSqlMicrosoft = "INSERT INTO StockInfo(StockID, UserID, Type, StockName, Owned, Price, Total) VALUES('" + StockID1 + "','" + passUsername + ",'Technology','Microsoft (MSFT)',0,32.75,0"; 
      PreparedStatement stmtMicrosoft = connection.prepareStatement(insertDataSqlMicrosoft); 
      stmtMicrosoft.executeQuery(); 

      Random StockID2 = new Random(); 
      StockID2.nextInt(4); 
      String insertDataSqlIntel = "INSERT INTO StockInfo(StockID, UserID, Type, StockName, Owned, Price, Total) VALUES('" + StockID2 + "','" + passUsername + "','Technology','Intel (INTC)',0,26.75,0)"; 
      PreparedStatement stmtIntel = connection.prepareStatement(insertDataSqlIntel); 
      stmtIntel.executeQuery(); 

      Random StockID3 = new Random(); 
      StockID3.nextInt(9); 
      String insertDataSqlDuke = "INSERT INTO StockInfo(StockID, UserID, Type, StockName, Owned, Price, Total) VALUES('" + StockID3 + "','" + passUsername + "','Utility','Duke Energy (DUK)',0,89.00,0"; 
      PreparedStatement stmtDuke = connection.prepareStatement(insertDataSqlDuke); 
      stmtDuke.executeQuery(); 

      Random StockID4 = new Random(); 
      StockID4.nextInt(7); 
      String insertDataSqlCable = "INSERT INTO StockInfo(StockID, UserID, Type, StockName, Owned, Price, Total) VALUES('" + StockID4 + "','" + passUsername + "','Utility','Time Warner Cable (TWC)',0,30.00,0)"; 
      PreparedStatement stmtCable = connection.prepareStatement(insertDataSqlCable); 
      stmtCable.executeQuery(); 

      session.setAttribute("sessionID", sessionID); 
      response.sendRedirect("Categories"); 
     } 
    } 
    catch (ClassNotFoundException cnfe) { 
     System.err.println("Error loading driver: " + cnfe); 
     out.println("<tr>Error loading driver: " + cnfe + "</tr>"); 
    } 
    catch (SQLException sqle) { 
     System.err.println("Error with connection: " + sqle); 
     out.println("<tr>Error with connection: " + sqle + "</tr>"); 
    } finally {    
     out.close(); 
    } 
} 

// <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code."> 
/** 
* Handles the HTTP 
* <code>GET</code> method. 
* 
* @param request servlet request 
* @param response servlet response 
* @throws ServletException if a servlet-specific error occurs 
* @throws IOException if an I/O error occurs 
*/ 
@Override 
protected void doGet(HttpServletRequest request, HttpServletResponse response) 
     throws ServletException, IOException { 
    processRequest(request, response); 
} 

/** 
* Handles the HTTP 
* <code>POST</code> method. 
* 
* @param request servlet request 
* @param response servlet response 
* @throws ServletException if a servlet-specific error occurs 
* @throws IOException if an I/O error occurs 
*/ 
@Override 
protected void doPost(HttpServletRequest request, HttpServletResponse response) 
     throws ServletException, IOException { 
    processRequest(request, response); 
} 

/** 
* Returns a short description of the servlet. 
* 
* @return a String containing servlet description 
*/ 
@Override 
public String getServletInfo() { 
    return "Short description"; 
}// </editor-fold> 
}

我想通了，我是從閱讀之前所遇到的問題該數據庫只是爲了現在有一個新問題。當我輸入我已驗證的用戶名和密碼存在於數據庫中時，我不會重定向到我想要訪問的頁面。此外，當我嘗試註冊一個新用戶，我不重定向到頁面，我給出一個錯誤，指出：值java.sql.SQLException：ORA-00917：缺少逗號

的用戶名

與連接錯誤和註冊人的密碼被髮送到數據庫，但程序不會將您重定向到相應的頁面。

來源

2012-03-08 tyeverhart11

回答

2

檢查您的驅動程序類和URL語法。

語法URL連接

jdbc:oracle:thin:@//[HOST][:PORT]/SERVICE

這裏是工作示例我從OracleFAQ了。

import java.sql.*; 
class Conn { 
    public static void main (String[] args) throws Exception 
    { 
    Class.forName ("oracle.jdbc.OracleDriver"); 

    Connection conn = DriverManager.getConnection 
    ("jdbc:oracle:thin:@//localhost:1521/orcl", "scott", "tiger"); 
         // @//machineName:port/SID, userid, password 
    try { 
    Statement stmt = conn.createStatement(); 
    try { 
     ResultSet rset = stmt.executeQuery("select BANNER from SYS.V_$VERSION"); 
     try { 
     while (rset.next()) 
      System.out.println (rset.getString(1)); // Print col 1 
     } 
     finally { 
      try { rset.close(); } catch (Exception ignore) {} 
     } 
    } 
    finally { 
     try { stmt.close(); } catch (Exception ignore) {} 
    } 
    } 
    finally { 
    try { conn.close(); } catch (Exception ignore) {} 
    } 
    } 
}

有幾件事我想建議。

  • 如果您可以使用JSP，請參閱MVC設計。
  • 正如您可能已經注意到的，您的 類中都有重複的代碼。所以爲數據庫連接創建一個單獨的類。

要查找正確的主機名/端口/服務，請檢查tnsnames.ora文件。 檢查OracleFAQ

這裏有幾個鏈接，讓你開始：

http://docs.oracle.com/cd/B13789_01/java.101/b10979/getsta.htm

http://docs.oracle.com/javase/tutorial/jdbc/basics/gettingstarted.html

http://www.oracle.com/technetwork/indexes/downloads/index.html

來源

2012-03-08 05:44:42 John

+0

我仍然有我的代碼的問題。我不知道我是否沒有正確的主機名，端口號或服務。或者是否有可能需要下載數據庫功能或程序？ – tyeverhart11 2012-03-08 22:14:29

+0

您需要一個JDBC連接器。如果這是您第一次使用數據庫連接，我建議您嘗試一個顯示數據庫表內容的簡單servlet。 – John 2012-03-09 04:20:37

+0

我已經更新了我的答案。 – John 2012-03-09 04:31:12

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