Spring Boot -Failed to convert from type [java.lang.String] to type RequestParam

Question

in my controller I have an endpoint:

  @GetMapping(value = SUMMARY_URL, produces = "application/json")
    public DailyReportSummary getSummaryOfDailyReports(
            @RequestParam(name = "from", required = false,defaultValue = "10-10-2017 ") @DateTimeFormat(pattern = "dd-MM-yyyy") LocalDateTime from,
            @RequestParam(name = "to", required = false,defaultValue = "10-10-2019 ") @DateTimeFormat(pattern = "dd-MM-yyyy") LocalDateTime to) {

        List<DailyReport> summary = statisticService.findByDateToSummary(from, to);

        DailyReportSummary dailyReportSummary = new DailyReportSummary(summary);

I though that all is ok, but I have this error:

   There was an unexpected error (type=Bad Request, status=400).
    Failed to convert value of type 'java.lang.String' to required type 'java.time.LocalDateTime'; nested exception is org.springframework.core.convert.ConversionFailedException: 
Failed to convert from type [java.lang.String] to type [@org.springframework.web.bind.annotation.RequestParam 

@org.springframework.format.annotation.DateTimeFormat java.time.LocalDateTime] for value '10-10-2017 '; nested exception is java.lang.IllegalArgumentException: Parse attempt failed for value [10-10-2017 ]

What is wrong with this? I trying this solve this, but nothing works.

edit: with deleted iso still errors :(

Show us the your post request. Looks like you are passing a badly formatted value for from/to. — Robert Moskal
– Robert Moskal, Commented Jul 23, 2018 at 13:57
Iso date format is YYYY-MM-DD not DD-MM-YYYY or MM-DD-YYYY. Your default values are in the wrong format. Also if it only is a date why use LocalDateTime over LocalDate? — M. Deinum
– M. Deinum, Commented Jul 23, 2018 at 13:58
I have no request, just spring taking default values - to avoid my wrong query in browser. I using LocalDateTime, because I have DATETIME in database — Adam
– Adam, Commented Jul 23, 2018 at 14:03

Karol Dowbecki · Accepted Answer · 2018-07-23 14:13:35Z

4

Since the pattern dd-MM-yyyy doesn't have time part you need to use LocalDate

@GetMapping(value = SUMMARY_URL, produces = "application/json")
public DailyReportSummary getSummaryOfDailyReports(
        @RequestParam(name = "from", required = false, defaultValue = "10-10-2017") @DateTimeFormat(pattern = "dd-MM-yyyy") LocalDate from,
        @RequestParam(name = "to", required = false, defaultValue = "10-10-2019") @DateTimeFormat(pattern = "dd-MM-yyyy") LocalDate to) {

answered Jul 23, 2018 at 14:13

Karol Dowbecki

45.3k9 gold badges83 silver badges118 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

Barrosy Over a year ago

Say that you provide a pattern of for example@DateTimeFormat(pattern="dd-MM-yyyy-hh-mm-ss"), you would not need to change the type to LocalDate correct? After adjusting the pattern I am still receiving the same error. How would you deal with this if you wish to go by LocalDateTime?

Collectives™ on Stack Overflow

Spring Boot -Failed to convert from type [java.lang.String] to type RequestParam

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related