具有多个模式的 DateTimeFormatter 不起作用

问：

这两种模式在单独测试时工作正常，但它们不能在单个语句中协同工作。ofPattern { "[]" + "[]"}

请指导我在这里错过了什么

import java.time.format.DateTimeFormatter;
import java.time.format.DateTimeFormatterBuilder;
import java.time.LocalDate;
import java.time.LocalDateTime;
import java.time.LocalTime;

public class SampleProgram {
    
    private static final DateTimeFormatter dateTimeFormats = DateTimeFormatter.ofPattern(
            "[yyyy-MM-dd'T'HH:mm:ss.SSS]" + //: Year, month, day, 'T' separator, hour, minute, second, and milliseconds (e.g., 2023-05-21T12:34:56.789)
            "[yyyy-MM-dd'T'HH:mm:ss.SSSSSS]"  //: Year, month, day, 'T' separator, hour, minute, second, and microseconds (e.g., 2023-05-21T12:34:56.123456)
    );

    private static final String[] inputArray = new String[]{
        "2021-01-30T23:45:00.123",
        "2023-08-15T12:34:56.789123",
    };

    
    public static void main(String[] args) {
        
        for (var input : inputArray) {
            var ignore = LocalDateTime.parse(input, dateTimeFormats);
        }
        System.out.println("No exception occured!");
    }
}

输出：

Exception in thread "main" java.time.format.DateTimeParseException: Text '2023-08-15T12:34:56.789123' could not be parsed, unparsed text found at index 23
at java.base/java.time.format.DateTimeFormatter.parseResolved0(DateTimeFormatter.java:2049)
    at java.base/java.time.format.DateTimeFormatter.parse(DateTimeFormatter.java:1948)at java.base/java.time.LocalDateTime.parse(LocalDateTime.java:492)
    at SampleProgram.main(SampleProgram.java:25)