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

Question

我在将整数数组插入 Postgresql 表时遇到问题，我该怎么做？

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。填入 2 位数字。

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:

There was an unexpected error (type=Internal Server Error, status=500). PreparedStatementCallback; bad SQL grammar [INSERT INTO draw_result (id, >ball_numbers, balls_with_mega_ball, draw_dates, mega_plier) VALUES(?, ?, ?, ?, >?)]; nested exception is org.postgresql.util.PSQLException: Can't infer the SQL >type to use for an instance of java.util.ArrayList. Use setObject() with an >explicit Types value to specify the type to use.

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;
}