一尘不染

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

spring-boot

我在将Integer数组插入Postgresql Table时遇到问题,该如何解决?

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。填充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:

发生意外错误(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:无法推断用于java.util.ArrayList实例的SQL类型。将setObject()与>
explicit Types值一起使用以指定要使用的类型。


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2020-05-30

共1个答案

一尘不染

最近我有一个类似的问题。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;
}
2020-05-30