How to use LocalDateTime RequestParam in Spring? I get “Failed to convert String to LocalDateTime”

Question

I use Spring Boot and included jackson-datatype-jsr310 with Maven:

    com.fasterxml.jackson.datatype         


        

Answer 1

I found workaround here.

Spring/Spring Boot only supports the date/date-time format in BODY parameters.

The following configuration class adds support for date/date-time in QUERY STRING (request parameters):

// Since Spring Framwork 5.0 & Java 8+
@Configuration
public class DateTimeFormatConfiguration implements WebMvcConfigurer {

    @Override
    public void addFormatters(FormatterRegistry registry) {
        DateTimeFormatterRegistrar registrar = new DateTimeFormatterRegistrar();
        registrar.setUseIsoFormat(true);
        registrar.registerFormatters(registry);
    }
}

respectively:

// Until Spring Framwork 4.+
@Configuration
public class DateTimeFormatConfiguration extends WebMvcConfigurerAdapter {

    @Override
    public void addFormatters(FormatterRegistry registry) {
        DateTimeFormatterRegistrar registrar = new DateTimeFormatterRegistrar();
        registrar.setUseIsoFormat(true);
        registrar.registerFormatters(registry);
    }
}

It works even if you bind multiple request parameters to some class (@DateTimeFormat annotation helpless in this case):

public class ReportRequest {
    private LocalDate from;
    private LocalDate to;

    public LocalDate getFrom() {
        return from;
    }

    public void setFrom(LocalDate from) {
        this.from = from;
    }

    public LocalDate getTo() {
        return to;
    }

    public void setTo(LocalDate to) {
        this.to = to;
    }
}

// ...

@GetMapping("/api/report")
public void getReport(ReportRequest request) {
// ...