Question

我编写了以下代码，其中包含一个SQL查询，该查询获取了DB中特定商店的storeID：

private int inDB(String storename, String phone, int zipcode)
    {
        try
        {
            String select = "SELECT storeID FROM Store WHERE storename = ? OR phone = ? AND City_zipcode = ?;";

            PreparedStatement pst = dbc.prepareStatement(select);

            pst.setString(1, storename);
            pst.setString(2, phone);
            pst.setInt(3, zipcode);

            ResultSet rs = pst.executeQuery(select);

            while(rs.next())
            {
                return rs.getInt("storeID");
            }
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }

        return -1;
    }

不幸的是，这段代码引发了一个大规模的例外......我试图找出问题的一段时间。

com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '? OR phone = ? AND City_zipcode = ?' at line 1
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:408)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:377)
    at com.mysql.jdbc.Util.getInstance(Util.java:360)
    at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:978)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3887)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3823)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2435)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2582)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2526)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2484)
    at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1446)
    at db.Store.inDB(Store.java:297)

如您所见，我正在使用MySQL数据库驱动程序。所有其他几乎相同的方法都在起作用。它必须是导致问题的查询。但是当我尝试在phpMyAdmin中运行它时，它绝对没问题。

我希望你们中的某个人可以帮助我...

亲切的问候 //乔纳斯

Answer 1

错误在这里改变它

ResultSet rs = pst.executeQuery(select);

以

ResultSet rs = pst.executeQuery();

您准备好将query语句设置为preparedStatement

Answer 2

我相信吗？是mysql的保留关键字...

阅读本文http://dev.mysql.com/doc/refman/5.1/en/regexp.html

SQL Query抛出异常

2 个答案: