Java 如何修复'；日期时间分析异常'；在爪哇

我有一个日期时间格式化程序，我正在尝试将输入的日期格式化为如下所示的格式（d/MM/yyyy）

DateTimeFormatter format = DateTimeFormatter.ofPattern("dd/MM/yyyy");

Exception in thread "main" java.time.format.DateTimeParseException: Text '27/01/1999' could not be parsed at index 0
    at java.base/java.time.format.DateTimeFormatter.parseResolved0(DateTimeFormatter.java:2046)
    at java.base/java.time.format.DateTimeFormatter.parse(DateTimeFormatter.java:1948)
    at java.base/java.time.LocalDate.parse(LocalDate.java:428)
    at java.base/java.time.LocalDate.parse(LocalDate.java:413)
    at BikeNow.addCustomer(BikeNow.java:153)
    at BikeNow.main(BikeNow.java:98)

然后，我使用这个格式化程序将用户输入的出生日期作为字符串，然后尝试解析它，将其存储为LocalDate变量，temp存储用户输入的出生日期

public void addCustomer() throws ParseException {
        customerID++;
        //Create Scanner
        Scanner scan = new Scanner(System.in);

        //Take user input
        System.out.println("Please enter your name: ");
        String name = scan.nextLine();
        System.out.println("Please enter your Date of Birth(dd/MM/yyyy): ");
        String temp = scan.nextLine();
        LocalDate date = LocalDate.parse(temp);
        Customer c = new Customer(customerID, name, date, false, "N/A");
        customers.add(c);
    }

但是，这始终返回DateTimeParseException:无法解析文本。我如何设置日期时间格式化程序以始终导致此异常的问题？如下所示

DateTimeFormatter format = DateTimeFormatter.ofPattern("dd/MM/yyyy");

Exception in thread "main" java.time.format.DateTimeParseException: Text '27/01/1999' could not be parsed at index 0
    at java.base/java.time.format.DateTimeFormatter.parseResolved0(DateTimeFormatter.java:2046)
    at java.base/java.time.format.DateTimeFormatter.parse(DateTimeFormatter.java:1948)
    at java.base/java.time.LocalDate.parse(LocalDate.java:428)
    at java.base/java.time.LocalDate.parse(LocalDate.java:413)
    at BikeNow.addCustomer(BikeNow.java:153)
    at BikeNow.main(BikeNow.java:98)

---

我认为您忘记了参数，下面是修复方法：

public void addCustomer() throws ParseException {
        customerID++;
        //Create Scanner
        Scanner scan = new Scanner(System.in);

        //Take user input
        System.out.println("Please enter your name: ");
        String name = scan.nextLine();
        System.out.println("Please enter your Date of Birth(dd/MM/yyyy): ");
        String temp = scan.nextLine();

    DateTimeFormatter formatter = DateTimeFormatter.ofPattern("dd/MM/yyyy");
        LocalDate date = LocalDate.parse(temp, formatter);
        Customer c = new Customer(customerID, name, date, false, "N/A");
        customers.add(c);
}

---

传递您的

DateTimeFormatter

对象

更改此项：

LocalDate date = LocalDate.parse(temp);

……为此：

LocalDate date = LocalDate.parse(temp, format);

---

您的输入是什么？d/MM/yyyy？除了1-9天之外的其他日期呢？这在我的环境中起作用。。。请向我们显示导致

异常的堆栈跟踪和输入。您的代码实际上没有使用您创建的
format
变量。
LocalDate.parse（temp，format）