无法使用executeQuery（）发出数据操作语句 [英] Can not issue data manipulation statements with executeQuery()

问题描述

我使用 com.mysql.jdbc.Driver

我需要插入和获取id。
我的查询：

I need insert and get id. My query:

INSERT INTO Sessions(id_user) VALUES(1);
SELECT LAST_INSERT_ID() FROM Sessions LIMIT 1;

错误 -

无法通过executeQuery（）发布数据操作
语句

Can not issue data manipulation statements with executeQuery()

如何插入和获取id？

推荐答案

    Connection connection = null;
    PreparedStatement preparedStatement = null;
    ResultSet generatedKeys = null;

    try {
        connection = m_Connection;
        preparedStatement = (PreparedStatement) connection.prepareStatement(qString, Statement.RETURN_GENERATED_KEYS);

        // ...

        int affectedRows = preparedStatement.executeUpdate();
        if (affectedRows == 0) {
            throw new SQLException("Creating user failed, no rows affected.");
        }

        generatedKeys = preparedStatement.getGeneratedKeys();
        int id = -1;
        if (generatedKeys.next()) {
            id = generatedKeys.getInt(1);
            id = -1;
        } else {
            throw new SQLException("Creating user failed, no generated key obtained.");
        }
    } finally {

    }

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