Question

我要做的是更新它将搜索itemnumber的记录，并使用id来根据edittext中的内容更改另一个表中的shelfnumber

这是我尝试更新记录时遇到的错误

java.sql.SQLException：关键字“file”附近的语法不正确。

这发生在我的公共课和我的preparedStatement.executeUpdate();

上

public class UpdatePro extends AsyncTask<String, String, String> {
    String z = "";
    Boolean isSuccess = false;
    String item = cardnumberbox.getText().toString();
    String shelf = shelfnumberbox.getText().toString();      

    @Override
    protected String doInBackground(String... params) {

        if (item.trim().equals("") || shelf.trim().equals(""))
            z = getString(R.string.Invalid_Credentials);
        else {
            try {
                Connection con = connectionClass.CONN();
                if (con == null) {
                    z = getString(R.string.Forbindelses_fejl);;
                } else {
                    String text1 = item;
                    {
                        if(text1.substring(0,1).startsWith("K"))
                        {
                            text1 =  text1.substring(1);
                        }
                        else
                        {
                            text1=  text1 ;//.substring(0));
                        }
                    }
                    String text2 = shelf;
                    {
                        if(text2.substring(0,1).startsWith("R"))
                        {
                            text2 =  text2.substring(1);
                        }
                        else
                        {
                            text2=  text2 ;//.substring(0));
                        }
                    }
                    String query = "Update PS set ShelfNumber = "+text2+ " from file.ItemPart PS "+ " join file.item P on P.id = PS.id "+ " where P.ItemNumber = '"+text1 + "'";
                   PreparedStatement preparedStatement = con.prepareStatement(query);
                    preparedStatement.executeUpdate();

                    z = getString(R.string.Update_succes);

                    isSuccess = true;
                }
            } catch (Exception ex) {
                isSuccess = false;
                Log.e("YOUR_APP_LOG_TAG", "I got an error", ex);
                z = getString(R.string.Exceptions);
            }
        }
        return z;

Answer 1

尝试：

public class UpdatePro extends AsyncTask<String, String, String> {
String z = "";
Boolean isSuccess = false;
String item = cardnumberbox.getText().toString();
String shelf = shelfnumberbox.getText().toString();      

@Override
protected String doInBackground(String... params) {

    if (item.trim().equals("") || shelf.trim().equals(""))
        z = getString(R.string.Invalid_Credentials);
    else {
        try {
            Connection con = connectionClass.CONN();
            if (con == null) {
                z = getString(R.string.Forbindelses_fejl);;
            } else {
                String text1 = item;
                {
                    if(text1.substring(0,1).startsWith("K"))
                    {
                        text1 =  text1.substring(1);
                    }
                    else
                    {
                        text1=  text1 ;//.substring(0));
                    }
                }
                String text2 = shelf;
                {
                    if(text2.substring(0,1).startsWith("R"))
                    {
                        text2 =  text2.substring(1);
                    }
                    else
                    {
                        text2=  text2 ;//.substring(0));
                    }
                }
                String query = "Update PS set ShelfNumber = "+text2+ " from [file].[ItemPart] PS "+ " join [file].[item] P on P.id = PS.id "+ " where P.ItemNumber = '"+text1 + "'";
               PreparedStatement preparedStatement = con.prepareStatement(query);
                preparedStatement.executeUpdate();

                z = getString(R.string.Update_succes);

                isSuccess = true;
            }
        } catch (Exception ex) {
            isSuccess = false;
            Log.e("YOUR_APP_LOG_TAG", "I got an error", ex);
            z = getString(R.string.Exceptions);
        }
    }
    return z;

尝试更新数据库中的记录时出现异常

1 个答案: