java - MySQL插入数据时出现 'java.sql.SQLException'错误如何解决

Question

我正在使用preparedStatement，并且我有java.sql.SQLException错误

query = "INSERT INTO instdb (" +
     "id," +
     "name," +
     "username," +
     "descr," +
     "tel," +
     "vk," +
     "ownerId," +
     "query," +
     "postId," +
     "parametr) VALUES" +
     "(?,?,?,?,?,?,?,?,?,?)";
stmt = con.prepareStatement(query);
stmt.setInt(1, maxid);
stmt.setString(2,user.getFull_name());
stmt.setString(3,username);
stmt.setString(4,caption);
stmt.setString(5,longestTel);
stmt.setString(6,vk);
stmt.setString(7,ownerId);
stmt.setString(8,addons.get(j));
stmt.setString(9,postId);
stmt.setString(10,param);

并且发生stmt.setInt(1, maxid);错误

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

编辑 1

我替换 stmt = con.prepareStatement(query); 并出现新错误:

java.sql.SQLSyntaxErrorException: 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 '?,?,?,?,?,?,?,?,?,?)'

附注 这对我没有帮助stackoverflow

Answer 1

您是否忘记初始化stm？

stm = con.prepareStatement(query);

其中 con 是您的 Connection 对象。