CODEWITHSUNDEEP
javaspring-mvc
uromay
uromay

Reputation: 349

@RequestParam annotation in Spring MVC with YearMonth value

I'm trying to get a query param of the following format "2018-01" to be used as a YearMonth (java.time) object.

In my controller, I have the following param:

@RequestParam(value = "start") @DateTimeFormat(pattern = "yyyy-MM") YearMonth start

but I get the following error: Failed to convert value of type [java.lang.String] to required type [java.time.YearMonth]; nested exception is java.lang.IllegalStateException: Cannot convert value of type [java.lang.String] to required type [java.time.YearMonth]: no matching editors or conversion strategy found

Edit:
According to this link: https://jira.spring.io/browse/SPR-13518 , the java.time.YearMonth conversion is supported since version 4.2.4, and I'm using spring version 4.3.3.RELEASE

Upvotes: 3

Views: 2883

Answers (1)

arthur
arthur

Reputation: 3325

Don't know if YearMonth is supported by the @DateTimeFormatter annotation for implicit conversion. But

you can always registered custom Converter for this YearMonth type like this:

@Configuration
@EnableMvc 
public class WebMvcConfig extends WebMvcConfigurerAdapter {

    @Override
    public void addFormatters(FormatterRegistry registry) {
        registry.addConverter(new YearMonthConverter());
    }
}

with your YearMonthConverter defined as:

public class YearMonthConverter implements Converter<String, YearMonth> {

    @Override
    public YearMonth convert(String text) {
        return YearMonth.parse(text, DateTimeFormatter.ofPattern("yyyy-MM"));
    }
}

there you are assured of implicit conversion.

Upvotes: 3

Related Questions