Question

我在将Integer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。填写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Springboot的错误：

出现意外错误（type = Internal Server Error，status = 500）。 PreparedStatementCallback;错误的SQL语法[INSERT INTO draw_result（id，＆gt; ball_numbers，balls_with_mega_ball，draw_dates，mega_plier）VALUES（？，？，？，？，＆gt;？）];嵌套异常是org.postgresql.util.PSQLException：无法推断用于java.util.ArrayList实例的SQL＆gt;类型。使用带有＆gt;显式类型值的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;
}

如何在Java Springboot中使用jdbcTemplate将Integer数组插入到postgresql表中？

1 个答案: