java unmarshall LocalDateTime错误 [英] java unmarshall LocalDateTime error

问题描述

这是我的适配器类：

public class LocalDateTimeAdapter extends XmlAdapter<String, LocalDateTime> {

@Override
public LocalDateTime unmarshal(String v) throws Exception {
    return new LocalDateTime(v);
}

@Override
public String marshal(LocalDateTime v) throws Exception {
    return v.toString();
}

}

这是一个对象类，我想存储日期：

and this is an object-class where i want to store the date:

@XmlAccessorType(XmlAccessType.FIELD)
public class Object {

@XmlJavaTypeAdapter(LocalDateTimeAdapter.class)
private LocalDateTime time;

public LocalDateTime getTime() {
        return time;
    }

由于某种原因，我无法编译它。它显示问题出在返回new LocalDateTime（v）; 。这是我得到的错误：

For some reason, i can't compile it. It shows that the problem is at return new LocalDateTime(v);. And this is the error I get:

    Error:(9, 16) java: constructor LocalDateTime in class java.time.LocalDateTime cannot be applied to given types;
  required: java.time.LocalDate,java.time.LocalTime
  found: java.lang.String
  reason: actual and formal argument lists differ in length

和xml部分：

<time type="dateTime">2000-01-01T19:45:00Z</time>

我正在关注这个示例。

推荐答案

可能你正在使用 <$来自Java 8的c $ c> LocalDateTime 。该类没有任何构造函数用于字符串。

Probably you're using LocalDateTime from Java 8. This class has not any constructor for string.

在你的例子中重温 LocalDateTime 来自 JodaTime 。

In the example which you're following LocalDateTime is from JodaTime.

所以，你可以这样做：

• 导入 org.joda.time.LocalDateTime （您将需要JodaTime依赖项）而不是 java.time.LocalDateTime ;

• Import org.joda.time.LocalDateTime (you will need JodaTime dependency) instead of java.time.LocalDateTime;

或将 unmarshal 方法改为某些人像这样：

or change unmarshal method to something like this:

@Override
public LocalDateTime unmarshal(String v) throws Exception {
    return LocalDateTime.parse(v);
}

您可能需要通知日期时间格式，因为默认格式为 2011-12-03T10：15：30 ，也许这样：

You may need to inform the date time format, as the default is a format to 2011-12-03T10:15:30, maybe this:

@Override
public LocalDateTime unmarshal(String v) throws Exception {
    return LocalDateTime.parse(v, DateTimeFormatter.ISO_INSTANT);
}

此外，在 java.time.LocalDateTime toString 将输出以下ISO-8601格式之一：

Also, in java.time.LocalDateTime toString will output one of the following ISO-8601 formats:

• uuuu-MM -dd'T'HH：mm


• uuuu-MM-dd'T'HH：mm：ss


• uuuu-MM-dd'T 'HH：mm：ss.SSS


• uuuu-MM-dd'T'HH：mm：ss.SSSSSS


• uuuu-MM-dd 'T'HH：mm：ss.SSSSSSSSS

• uuuu-MM-dd'T'HH:mm
• uuuu-MM-dd'T'HH:mm:ss
• uuuu-MM-dd'T'HH:mm:ss.SSS
• uuuu-MM-dd'T'HH:mm:ss.SSSSSS
• uuuu-MM-dd'T'HH:mm:ss.SSSSSSSSS

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