java - 如何在Java Springboot中使用jdbcTemplate将整数数组插入postgresql表？

Question

我在将整数数组插入 Postgresql 表时遇到问题，我该如何处理？

String sql = "INSERT INTO draw_result (id, ball_numbers,  balls_with_mega_ball, draw_dates, mega_plier) VALUES(?, ?, ?, ?, ?)";
        Object[] params = {randomNumbers, ballNumbers, ballNumbersMegaBall, drawDates, megaPlier};
        jdbcTemplate.update(sql, params);

其中ballNumbers 和ballNumbersMegaBall 是ArrayList。用 2 位数字填充。

这是 PostgreSQL 表：

CREATE TABLE public.draw_result
(
id bigint NOT NULL,
draw_dates date, 
ball_numbers bigint[],
balls_with_mega_ball bigint[],
mega_plier bigint,
CONSTRAINT draw_result_pkey PRIMARY KEY (id)
)

这是来自 Springboot 的错误：

出现意外错误（类型=内部服务器错误，状态=500）。 PreparedStatementCallback;错误的 SQL 语法 [INSERT INTO draw_result (id, >ball_numbers, balls_with_mega_ball, draw_dates, mega_plier) VALUES(?, ?, ?, ?, >?)];嵌套异常是 org.postgresql.util.PSQLException: Can't infer the SQL >type to use for an instance of java.util.ArrayList。使用带有 >explicit Types 值的 setObject() 来指定要使用的类型。

Answer 1

最近我遇到了类似的问题。我的解决方案：

public void setDrawResult(BigInteger id, List<BigInteger> ballNumbers, List<BigInteger> ballsWithMegaBall, Date drawDates,BigInteger megaPlier){

    String sql = "INSERT INTO draw_result (id, ball_numbers,  balls_with_mega_ball, draw_dates, mega_plier) VALUES(?, ?, ?, ?, ?)";
    jdbcTemplate.update(sql
            , id
            , createSqlArray(ballNumbers)
            , createSqlArray(ballsWithMegaBall)
            , drawDates
            , megaPlier
    );
}

private java.sql.Array createSqlArray(List<BigInteger> list){
    java.sql.Array intArray = null;
    try {
        intArray = jdbcTemplate.getDataSource().getConnection().createArrayOf("bigint", list.toArray());
    } catch (SQLException ignore) {
    }
    return intArray;
}