如何在Rest请求体内使用带有单一的charsequence构造函数/工厂方法而不是单字符串的对象?

时间:2016-06-23 13:47:38

标签: java json spring rest spring-boot

我有一个方法控制器:

@RequestMapping(value = "/request", method = RequestMethod.POST)
public Response<Boolean> requestAppt(
        @RequestBody @Valid ApptRequest request
) {
    System.out.println(request);
    return Response.success(true);
}

我的ApptRequest是:

import org.springframework.format.annotation.DateTimeFormat;

import java.io.Serializable;
import java.time.OffsetDateTime;

public class ApptRequest implements Serializable{

    @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME)
    private OffsetDateTime date;

    public ApptRequest() {
    }

    public OffsetDateTime getDate() {
        return date;
    }

    public void setDate(OffsetDateTime date) {
        this.date = date;
    }
}

当我尝试向请求正文发送请求时:

{
    "date": "2016-05-11T13:30:38+02:00"
}

我有一个例外:

  

org.springframework.http.converter.HttpMessageNotReadableException:   无法读取文档:无法实例化类型的值[简单   来自String值的type,class java.time.OffsetDateTime]   (&#39; 2016-05-11T13:30:38 + 02:00&#39);没有单字符串构造函数/工厂   方法

它表示 OffsetDateTime应该只有一个String参数的构造函数或工厂方法。 但我发现它需要带有CharSequence参数的工厂方法

/**
 * Obtains an instance of {@code OffsetDateTime} from a text string
 * such as {@code 2007-12-03T10:15:30+01:00}.
 * <p>
 * The string must represent a valid date-time and is parsed using
 * {@link java.time.format.DateTimeFormatter#ISO_OFFSET_DATE_TIME}.
 *
 * @param text  the text to parse such as "2007-12-03T10:15:30+01:00", not null
 * @return the parsed offset date-time, not null
 * @throws DateTimeParseException if the text cannot be parsed
 */
public static OffsetDateTime parse(CharSequence text) {
    return parse(text, DateTimeFormatter.ISO_OFFSET_DATE_TIME);
}

如果我尝试将日期用作请求参数而不是请求正文属性,一切正常:

@RequestMapping(value = "/request", method = RequestMethod.POST)
public Response<Boolean> requestAppt(
        @RequestParam @Valid @DateTimeFormat(iso = DateTimeFormat.ISO.DATE_TIME) OffsetDateTime date
) {
    System.out.println(date);
    return Response.success(true);
}

可能我应该使用一些注释或类似的东西手动指定适当的构造函数?

1 个答案:

答案 0 :(得分:1)

将数据类型:jackson-datatype-jsr310添加到classpath应该会有所帮助。灵感来自JSON Java 8 LocalDateTime format in Spring Boot