java什么是datetimeoffset列的正确DateTimeFormatter模式

Question

通过datetimeoffset列查询SQL Server表的正确DateTimeFormatter模式是什么。当我执行下面的查询时，我会得到结果。我应该使用什么模式从java应用程序运行相同的查询

SELECT *
FROM
       TABLE
WHERE
       CreateTimestamp >= '2020-07-06 06:00:00.0000000 +00:00'

下面是我用来转换日期的java代码片段：

public String convertToDatabaseColumn(OffsetDateTime offsetDateTime) {
        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd-HH.mm.ss.SSSSSS Z");
        return offsetDateTime.format(formatter);
    }

下面是设置参数并执行查询的代码段

Date beginDt; // passed to the method as parameter
Date endDt; // passed to the method as parameter
OffsetDateTime beginDateTime = beginDt.toInstant().atOffset(ZoneOffset.UTC);
OffsetDateTime endDateTime = endDt.toInstant().atOffset(ZoneOffset.UTC);
params.put(BEG, convertToDatabaseColumn(beginDateTime));
params.put(END, convertToDatabaseColumn(endDateTime));
List<Map<String, Object>> newfuelList = sqlJdbcTemplate.queryForList(sqlForNewFuel, params);

我得到以下例外

Caused by: com.microsoft.sqlserver.jdbc.SQLServerException: Conversion failed when converting date and/or time from character string.

Answer 1

您需要使用模式yyyy-MM-dd HH.mm.ss.SSSSSS xxx。检查DateTimeFormatter文档中的以下句子：

Pattern letter 'X' (upper case) will output 'Z' when the offset to be output would be zero, whereas pattern letter 'x' (lower case) will output '+00', '+0000', or '+00:00'.

演示：

import java.time.LocalDateTime;
import java.time.OffsetDateTime;
import java.time.ZoneOffset;
import java.time.format.DateTimeFormatter;

public class Main {
    public static void main(String[] args) {
        // Test
        System.out.println(
                convertToDatabaseColumn(OffsetDateTime.of(LocalDateTime.of(2020, 7, 6, 6, 0, 0, 0), ZoneOffset.UTC)));
    }

    public static String convertToDatabaseColumn(OffsetDateTime offsetDateTime) {
        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH.mm.ss.SSSSSS xxx");
        return offsetDateTime.format(formatter);
    }
}

输出：

2020-07-06 06.00.00.000000 +00:00

注意：你的模式中也有一个输入错误，-介于dd和HH之间