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Java &引用；参数索引超出范围“；使用登录表单进行身份验证时出错

java sql angularjs jdbc

Java &引用；参数索引超出范围“；使用登录表单进行身份验证时出错,java,sql,angularjs,jdbc,Java,Sql,Angularjs,Jdbc,我正在尝试从用户（Auth类）获取电子邮件和密码，并使用Customer类检查此电子邮件和密码是否存在。我正在使用HTML、Angular.js、Java和SQL。我正在使用JDBC驱动程序。这是我得到的错误： java.sql.SQLException: Parameter index out of range (1 > number of parameters, which is 0) if(auth.getEmail().equals(customer.ge

我正在尝试从用户（Auth类）获取电子邮件和密码，并使用Customer类检查此电子邮件和密码是否存在。我正在使用HTML、Angular.js、Java和SQL。我正在使用JDBC驱动程序。这是我得到的错误：

java.sql.SQLException: Parameter index out of range (1 > number of parameters, which is 0)

            if(auth.getEmail().equals(customer.getEmail()) && auth.getPassword().equals(customer.getPassword())){
        //  if(customerPreparedStatement){  


                while(rs.next()){

        //          customer.setId(rs.getInt("ID"));
                    auth.setEmail(rs.getString("email"));
                    auth.setPassword(rs.getString("password"));

        //          System.out.print());
                }
            return true;

            }else {
                System.out.print("user doesn't exist");
                return false;
            }

        } catch (SQLException e) {

            e.printStackTrace();
            throw new AppException("Error in authentication", e.getCause());
        }finally{
            DBUtil.closeResources(ps, rs, con);
        }
    }
这是我为CustomerDAO类编写的java代码：

public boolean authenticated(Auth auth) throws AppException {
    Connection con = DBUtil.connectToDB();
    PreparedStatement ps = null;
    PreparedStatement customerPreparedStatement=null;
    ResultSet rs=null;
    ResultSet newRs=null;
    Customer customer=new Customer();

    try {
        ps=con.prepareStatement("INSERT INTO auth(EMAIL, PASSWORD) VALUES(?,?)", PreparedStatement.RETURN_GENERATED_KEYS);
        //if((customer.getEmail().equals(auth.getEmail())) && (customer.getPassword().equals(auth.getPassword())))
        ps.setString(1, auth.getEmail());
        ps.setString(2, auth.getPassword());
        ps.executeUpdate();
        //geting generated key
        rs= ps.getGeneratedKeys();
        customerPreparedStatement=con.prepareStatement("SELECT customer.EMAIL, customer.PASSWORD, auth.EMAIL, auth.PASSWORD FROM customer,auth WHERE customer.EMAIL=auth.email AND customer.PASSWORD=auth.PASSWORD");
        newRs=customerPreparedStatement.executeQuery();

        customerPreparedStatement.setString(1, customer.getEmail());
        customerPreparedStatement.setString(2, customer.getPassword());

        if(auth.getEmail().equals(customer.getEmail()) && auth.getPassword().equals(customer.getPassword())){
    //  if(customerPreparedStatement){  
            while(rs.next()){
                customer.setId(rs.getInt("ID"));
                auth.setEmail(rs.getString("email"));
                auth.setPassword(rs.getString("password"));

    //          System.out.print());
            }
            return true;
        }else {
            System.out.print("user doesn't exist");
            return false;
        }
    } catch (SQLException e) {
        e.printStackTrace();
        throw new AppException("Error in authentication", e.getCause());
    }finally{
        DBUtil.closeResources(ps, rs, con);
    }
}

  public boolean authenticated(Auth auth) throws AppException {

        Connection con = DBUtil.connectToDB();
        PreparedStatement ps = null;
        PreparedStatement customerPreparedStatement=null;
        ResultSet rs=null;
        ResultSet newRs=null;
        Customer customer=new Customer();

        try {
            ps=con.prepareStatement("INSERT INTO auth(EMAIL, PASSWORD) VALUES(?,?)", PreparedStatement.RETURN_GENERATED_KEYS);
            //if((customer.getEmail().equals(auth.getEmail())) && (customer.getPassword().equals(auth.getPassword())))
            ps.setString(1, auth.getEmail());
            ps.setString(2, auth.getPassword());
            ps.executeUpdate();
            //geting generated key
            rs= ps.getGeneratedKeys();

            if(auth.getEmail().equals(customer.getEmail()) && auth.getPassword().equals(customer.getPassword())){
        //  if(customerPreparedStatement){  


                while(rs.next()){

        //          customer.setId(rs.getInt("ID"));
                    auth.setEmail(rs.getString("email"));
                    auth.setPassword(rs.getString("password"));

        //          System.out.print());
                }
            return true;

            }else {
                System.out.print("user doesn't exist");
                return false;
            }

        } catch (SQLException e) {

            e.printStackTrace();
            throw new AppException("Error in authentication", e.getCause());
        }finally{
            DBUtil.closeResources(ps, rs, con);
        }
    }
我应该用什么逻辑

            if(auth.getEmail().equals(customer.getEmail()) && auth.getPassword().equals(customer.getPassword())){
        //  if(customerPreparedStatement){  


                while(rs.next()){

        //          customer.setId(rs.getInt("ID"));
                    auth.setEmail(rs.getString("email"));
                    auth.setPassword(rs.getString("password"));

        //          System.out.print());
                }
            return true;

            }else {
                System.out.print("user doesn't exist");
                return false;
            }

        } catch (SQLException e) {

            e.printStackTrace();
            throw new AppException("Error in authentication", e.getCause());
        }finally{
            DBUtil.closeResources(ps, rs, con);
        }
    }
我应该做什么更改？

customerPreparedStatement没有参数槽（？符号），但您提供了参数

            if(auth.getEmail().equals(customer.getEmail()) && auth.getPassword().equals(customer.getPassword())){
        //  if(customerPreparedStatement){  


                while(rs.next()){

        //          customer.setId(rs.getInt("ID"));
                    auth.setEmail(rs.getString("email"));
                    auth.setPassword(rs.getString("password"));

        //          System.out.print());
                }
            return true;

            }else {
                System.out.print("user doesn't exist");
                return false;
            }

        } catch (SQLException e) {

            e.printStackTrace();
            throw new AppException("Error in authentication", e.getCause());
        }finally{
            DBUtil.closeResources(ps, rs, con);
        }
    }
为获取客户而准备的语句没有参数：

customerPreparedStatement=con.prepareStatement("SELECT customer.EMAIL, customer.PASSWORD, auth.EMAIL, auth.PASSWORD FROM customer,auth WHERE customer.EMAIL=auth.email AND customer.PASSWORD=auth.PASSWORD");

            if(auth.getEmail().equals(customer.getEmail()) && auth.getPassword().equals(customer.getPassword())){
        //  if(customerPreparedStatement){  


                while(rs.next()){

        //          customer.setId(rs.getInt("ID"));
                    auth.setEmail(rs.getString("email"));
                    auth.setPassword(rs.getString("password"));

        //          System.out.print());
                }
            return true;

            }else {
                System.out.print("user doesn't exist");
                return false;
            }

        } catch (SQLException e) {

            e.printStackTrace();
            throw new AppException("Error in authentication", e.getCause());
        }finally{
            DBUtil.closeResources(ps, rs, con);
        }
    }
然后执行该查询时不带任何参数（全部正常）：

            if(auth.getEmail().equals(customer.getEmail()) && auth.getPassword().equals(customer.getPassword())){
        //  if(customerPreparedStatement){  


                while(rs.next()){

        //          customer.setId(rs.getInt("ID"));
                    auth.setEmail(rs.getString("email"));
                    auth.setPassword(rs.getString("password"));

        //          System.out.print());
                }
            return true;

            }else {
                System.out.print("user doesn't exist");
                return false;
            }

        } catch (SQLException e) {

            e.printStackTrace();
            throw new AppException("Error in authentication", e.getCause());
        }finally{
            DBUtil.closeResources(ps, rs, con);
        }
    }
错误就在这里：您向查询提供了参数，但它没有用于这些参数的插槽，并且您得到了一个java.sql.SQLException：

customerPreparedStatement.setString(1, customer.getEmail());
customerPreparedStatement.setString(2, customer.getPassword());

            if(auth.getEmail().equals(customer.getEmail()) && auth.getPassword().equals(customer.getPassword())){
        //  if(customerPreparedStatement){  


                while(rs.next()){

        //          customer.setId(rs.getInt("ID"));
                    auth.setEmail(rs.getString("email"));
                    auth.setPassword(rs.getString("password"));

        //          System.out.print());
                }
            return true;

            }else {
                System.out.print("user doesn't exist");
                return false;
            }

        } catch (SQLException e) {

            e.printStackTrace();
            throw new AppException("Error in authentication", e.getCause());
        }finally{
            DBUtil.closeResources(ps, rs, con);
        }
    }
您应该保持customerPreparedStatement不变，不要试图提供它未使用的参数。所以，在这种情况下，您可以在执行customerPreparedStatement.setString时删除这两行，因为它们无法工作。

问题已解决。感谢ALain O'Dea，只需添加以下行即可：

customerPreparedStatement=con.prepareStatement("SELECT customer.EMAIL, customer.PASSWORD, auth.EMAIL, auth.PASSWORD FROM customer,auth WHERE customer.EMAIL=? AND customer.PASSWORD=?");

            if(auth.getEmail().equals(customer.getEmail()) && auth.getPassword().equals(customer.getPassword())){
        //  if(customerPreparedStatement){  


                while(rs.next()){

        //          customer.setId(rs.getInt("ID"));
                    auth.setEmail(rs.getString("email"));
                    auth.setPassword(rs.getString("password"));

        //          System.out.print());
                }
            return true;

            }else {
                System.out.print("user doesn't exist");
                return false;
            }

        } catch (SQLException e) {

            e.printStackTrace();
            throw new AppException("Error in authentication", e.getCause());
        }finally{
            DBUtil.closeResources(ps, rs, con);
        }
    }
但现在我又犯了一个错误。这是我编辑的代码：

            if(auth.getEmail().equals(customer.getEmail()) && auth.getPassword().equals(customer.getPassword())){
        //  if(customerPreparedStatement){  


                while(rs.next()){

        //          customer.setId(rs.getInt("ID"));
                    auth.setEmail(rs.getString("email"));
                    auth.setPassword(rs.getString("password"));

        //          System.out.print());
                }
            return true;

            }else {
                System.out.print("user doesn't exist");
                return false;
            }

        } catch (SQLException e) {

            e.printStackTrace();
            throw new AppException("Error in authentication", e.getCause());
        }finally{
            DBUtil.closeResources(ps, rs, con);
        }
    }
客户道等级：

public boolean authenticated(Auth auth) throws AppException {
    Connection con = DBUtil.connectToDB();
    PreparedStatement ps = null;
    PreparedStatement customerPreparedStatement=null;
    ResultSet rs=null;
    ResultSet newRs=null;
    Customer customer=new Customer();

    try {
        ps=con.prepareStatement("INSERT INTO auth(EMAIL, PASSWORD) VALUES(?,?)", PreparedStatement.RETURN_GENERATED_KEYS);
        //if((customer.getEmail().equals(auth.getEmail())) && (customer.getPassword().equals(auth.getPassword())))
        ps.setString(1, auth.getEmail());
        ps.setString(2, auth.getPassword());
        ps.executeUpdate();
        //geting generated key
        rs= ps.getGeneratedKeys();
        customerPreparedStatement=con.prepareStatement("SELECT customer.EMAIL, customer.PASSWORD, auth.EMAIL, auth.PASSWORD FROM customer,auth WHERE customer.EMAIL=auth.email AND customer.PASSWORD=auth.PASSWORD");
        newRs=customerPreparedStatement.executeQuery();

        customerPreparedStatement.setString(1, customer.getEmail());
        customerPreparedStatement.setString(2, customer.getPassword());

        if(auth.getEmail().equals(customer.getEmail()) && auth.getPassword().equals(customer.getPassword())){
    //  if(customerPreparedStatement){  
            while(rs.next()){
                customer.setId(rs.getInt("ID"));
                auth.setEmail(rs.getString("email"));
                auth.setPassword(rs.getString("password"));

    //          System.out.print());
            }
            return true;
        }else {
            System.out.print("user doesn't exist");
            return false;
        }
    } catch (SQLException e) {
        e.printStackTrace();
        throw new AppException("Error in authentication", e.getCause());
    }finally{
        DBUtil.closeResources(ps, rs, con);
    }
}

  public boolean authenticated(Auth auth) throws AppException {

        Connection con = DBUtil.connectToDB();
        PreparedStatement ps = null;
        PreparedStatement customerPreparedStatement=null;
        ResultSet rs=null;
        ResultSet newRs=null;
        Customer customer=new Customer();

        try {
            ps=con.prepareStatement("INSERT INTO auth(EMAIL, PASSWORD) VALUES(?,?)", PreparedStatement.RETURN_GENERATED_KEYS);
            //if((customer.getEmail().equals(auth.getEmail())) && (customer.getPassword().equals(auth.getPassword())))
            ps.setString(1, auth.getEmail());
            ps.setString(2, auth.getPassword());
            ps.executeUpdate();
            //geting generated key
            rs= ps.getGeneratedKeys();

            if(auth.getEmail().equals(customer.getEmail()) && auth.getPassword().equals(customer.getPassword())){
        //  if(customerPreparedStatement){  


                while(rs.next()){

        //          customer.setId(rs.getInt("ID"));
                    auth.setEmail(rs.getString("email"));
                    auth.setPassword(rs.getString("password"));

        //          System.out.print());
                }
            return true;

            }else {
                System.out.print("user doesn't exist");
                return false;
            }

        } catch (SQLException e) {

            e.printStackTrace();
            throw new AppException("Error in authentication", e.getCause());
        }finally{
            DBUtil.closeResources(ps, rs, con);
        }
    }
Alain:删除此项：

            customerPreparedStatement=con.prepareStatement("SELECT customer.EMAIL, customer.PASSWORD, auth.EMAIL, auth.PASSWORD FROM customer,auth WHERE customer.EMAIL=? AND customer.PASSWORD=?");

            customerPreparedStatement=con.prepareStatement("SELECT customer.EMAIL, customer.PASSWORD, auth.EMAIL, auth.PASSWORD FROM customer,auth WHERE customer.EMAIL=auth.EMAIL AND customer.PASSWORD=auth.PASSWORD");

           // error is indicating this line
            newRs=customerPreparedStatement.executeQuery();

            customerPreparedStatement.setString(1, customer.getEmail());
            customerPreparedStatement.setString(2, customer.getPassword());

            if(auth.getEmail().equals(customer.getEmail()) && auth.getPassword().equals(customer.getPassword())){
        //  if(customerPreparedStatement){  


                while(rs.next()){

        //          customer.setId(rs.getInt("ID"));
                    auth.setEmail(rs.getString("email"));
                    auth.setPassword(rs.getString("password"));

        //          System.out.print());
                }
            return true;

            }else {
                System.out.print("user doesn't exist");
                return false;
            }

        } catch (SQLException e) {

            e.printStackTrace();
            throw new AppException("Error in authentication", e.getCause());
        }finally{
            DBUtil.closeResources(ps, rs, con);
        }
    }
Alain：插入以下内容：

            customerPreparedStatement=con.prepareStatement("SELECT customer.EMAIL, customer.PASSWORD, auth.EMAIL, auth.PASSWORD FROM customer,auth WHERE customer.EMAIL=? AND customer.PASSWORD=?");

            customerPreparedStatement=con.prepareStatement("SELECT customer.EMAIL, customer.PASSWORD, auth.EMAIL, auth.PASSWORD FROM customer,auth WHERE customer.EMAIL=auth.EMAIL AND customer.PASSWORD=auth.PASSWORD");

           // error is indicating this line
            newRs=customerPreparedStatement.executeQuery();

            customerPreparedStatement.setString(1, customer.getEmail());
            customerPreparedStatement.setString(2, customer.getPassword());

            if(auth.getEmail().equals(customer.getEmail()) && auth.getPassword().equals(customer.getPassword())){
        //  if(customerPreparedStatement){  


                while(rs.next()){

        //          customer.setId(rs.getInt("ID"));
                    auth.setEmail(rs.getString("email"));
                    auth.setPassword(rs.getString("password"));

        //          System.out.print());
                }
            return true;

            }else {
                System.out.print("user doesn't exist");
                return false;
            }

        } catch (SQLException e) {

            e.printStackTrace();
            throw new AppException("Error in authentication", e.getCause());
        }finally{
            DBUtil.closeResources(ps, rs, con);
        }
    }
Alain:保留这个：

            customerPreparedStatement=con.prepareStatement("SELECT customer.EMAIL, customer.PASSWORD, auth.EMAIL, auth.PASSWORD FROM customer,auth WHERE customer.EMAIL=? AND customer.PASSWORD=?");

            customerPreparedStatement=con.prepareStatement("SELECT customer.EMAIL, customer.PASSWORD, auth.EMAIL, auth.PASSWORD FROM customer,auth WHERE customer.EMAIL=auth.EMAIL AND customer.PASSWORD=auth.PASSWORD");

           // error is indicating this line
            newRs=customerPreparedStatement.executeQuery();

            customerPreparedStatement.setString(1, customer.getEmail());
            customerPreparedStatement.setString(2, customer.getPassword());

            if(auth.getEmail().equals(customer.getEmail()) && auth.getPassword().equals(customer.getPassword())){
        //  if(customerPreparedStatement){  


                while(rs.next()){

        //          customer.setId(rs.getInt("ID"));
                    auth.setEmail(rs.getString("email"));
                    auth.setPassword(rs.getString("password"));

        //          System.out.print());
                }
            return true;

            }else {
                System.out.print("user doesn't exist");
                return false;
            }

        } catch (SQLException e) {

            e.printStackTrace();
            throw new AppException("Error in authentication", e.getCause());
        }finally{
            DBUtil.closeResources(ps, rs, con);
        }
    }
Alain:并删除以下行：

            customerPreparedStatement=con.prepareStatement("SELECT customer.EMAIL, customer.PASSWORD, auth.EMAIL, auth.PASSWORD FROM customer,auth WHERE customer.EMAIL=? AND customer.PASSWORD=?");

            customerPreparedStatement=con.prepareStatement("SELECT customer.EMAIL, customer.PASSWORD, auth.EMAIL, auth.PASSWORD FROM customer,auth WHERE customer.EMAIL=auth.EMAIL AND customer.PASSWORD=auth.PASSWORD");

           // error is indicating this line
            newRs=customerPreparedStatement.executeQuery();

            customerPreparedStatement.setString(1, customer.getEmail());
            customerPreparedStatement.setString(2, customer.getPassword());

            if(auth.getEmail().equals(customer.getEmail()) && auth.getPassword().equals(customer.getPassword())){
        //  if(customerPreparedStatement){  


                while(rs.next()){

        //          customer.setId(rs.getInt("ID"));
                    auth.setEmail(rs.getString("email"));
                    auth.setPassword(rs.getString("password"));

        //          System.out.print());
                }
            return true;

            }else {
                System.out.print("user doesn't exist");
                return false;
            }

        } catch (SQLException e) {

            e.printStackTrace();
            throw new AppException("Error in authentication", e.getCause());
        }finally{
            DBUtil.closeResources(ps, rs, con);
        }
    }
Alain:剩下的留着：

            if(auth.getEmail().equals(customer.getEmail()) && auth.getPassword().equals(customer.getPassword())){
        //  if(customerPreparedStatement){  


                while(rs.next()){

        //          customer.setId(rs.getInt("ID"));
                    auth.setEmail(rs.getString("email"));
                    auth.setPassword(rs.getString("password"));

        //          System.out.print());
                }
            return true;

            }else {
                System.out.print("user doesn't exist");
                return false;
            }

        } catch (SQLException e) {

            e.printStackTrace();
            throw new AppException("Error in authentication", e.getCause());
        }finally{
            DBUtil.closeResources(ps, rs, con);
        }
    }
CustomerController类：

            if(auth.getEmail().equals(customer.getEmail()) && auth.getPassword().equals(customer.getPassword())){
        //  if(customerPreparedStatement){  


                while(rs.next()){

        //          customer.setId(rs.getInt("ID"));
                    auth.setEmail(rs.getString("email"));
                    auth.setPassword(rs.getString("password"));

        //          System.out.print());
                }
            return true;

            }else {
                System.out.print("user doesn't exist");
                return false;
            }

        } catch (SQLException e) {

            e.printStackTrace();
            throw new AppException("Error in authentication", e.getCause());
        }finally{
            DBUtil.closeResources(ps, rs, con);
        }
    }

@POST
@Path("/login")
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_JSON)
public AppResponse login(Auth auth, @Context HttpServletRequest request){


    AppResponse resp = new AppResponse();
    // generating the common msg for successful/ unsuccessful connection

        //if successful show list
        CustomerDAO customerDAO=new CustomerDAO();


            boolean isAuthenticated;
            try {

               //error is indicating this line
                isAuthenticated = customerDAO.authenticated(auth);
                //creating session
                HttpSession session=request.getSession(true);
                session.setAttribute("USER", auth);

                if(isAuthenticated){
                    resp.setMessage("Login is successfull");

                }else{

                    resp.setMessage("Login is failed");
                    resp.setStatus(AppResponse.ERROR);

                }
            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }



    //  resp.setPayload(auth);

        //customerDAO.getAll();
    return resp;


}
这是新的错误是：

            if(auth.getEmail().equals(customer.getEmail()) && auth.getPassword().equals(customer.getPassword())){
        //  if(customerPreparedStatement){  


                while(rs.next()){

        //          customer.setId(rs.getInt("ID"));
                    auth.setEmail(rs.getString("email"));
                    auth.setPassword(rs.getString("password"));

        //          System.out.print());
                }
            return true;

            }else {
                System.out.print("user doesn't exist");
                return false;
            }

        } catch (SQLException e) {

            e.printStackTrace();
            throw new AppException("Error in authentication", e.getCause());
        }finally{
            DBUtil.closeResources(ps, rs, con);
        }
    }

 java.sql.SQLException: No value specified for parameter 1
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:998)
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:937)
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:926)
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:872)
        at com.mysql.jdbc.PreparedStatement.checkAllParametersSet(PreparedStatement.java:2253)
        at com.mysql.jdbc.PreparedStatement.fillSendPacket(PreparedStatement.java:2233)
        at com.mysql.jdbc.PreparedStatement.fillSendPacket(PreparedStatement.java:2163)
        at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1976)
        at restaurant.my.dao.CustomerDAO.authenticated(CustomerDAO.java:161)
        at restaurant.my.rest.CustomerController.login(CustomerController.java:130)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
阅读错误消息。您认为它可能想告诉您什么？传递的参数数为0。但是为什么呢？我在这里传递参数、电子邮件和密码。不，它不是这么说的。它表示您试图将参数传递到不期望的内容中。@user3443889检查我的答案。我怀疑我已经发现了这个问题。感谢您的回答，但现在我又遇到了另一个错误：java.sql.SQLException:没有为参数指定值1@user3443889堆栈跟踪提到的是哪一行。代码行，因为我没有与行号匹配的文件。@user3443889将此代码重构为多个方法（当然每个准备好的语句一个方法）将真正帮助您隔离问题。您使用的IDE允许您单击堆栈跟踪以访问源代码吗？我想这就是我遇到的问题：customerPreparedStatement.setString（1，customer.getEmail（））；客户没有得到电子邮件的价值。我必须从auth获得它，并将其与客户进行比较。我在下面给出了我编辑的代码。我不能问新问题，这就是为什么。现在让我们解决下面的问题：）检查我上面的注释。我认为这些步骤会让你克服这个问题。如果你有新问题，请点击按钮提问。如果此问题有助于提供上下文，请包含指向此问题的链接。-@PaulHicks大体上是正确的，完全符合我的建议。OP被阻止提出新问题，可能是因为代表率低。非常感谢您提供此解决方案。我现在没有得到错误，但逻辑上它有一些问题。结果现在显示客户不在数据库中。我认为逻辑不在if语句中。