Get multiple values for same parameter name in request URL - Spring boot

Question

In my spring boot application a request comes from the client with the following URL. localhost:8080/api/invoice?invoiceNo=1234&invoiceDate=050218&invoiceNo=6543&invoiceDate=060218

How can I get the values for the request property invoiceNo and invoiceDate. I know we can always use some delimiter while building the URL and fetch it. I would like to know if there is any springboot way for achieving this. Any help is much appreciated. Now when I try request.getParameter("invoiceNo") I get only the first parameter.

Answer 1

使用清单

public void invoice(@RequestParam(name="invoiceNo") List<String> invoiceNos, @RequestParam(name="invoiceDate") List<String> invoiceDates) {

Answer 2

As @maruthi mentioned request.getParameterValues("invoiceNumber") is one way. Another way is to add @RequestParam(value="invoiceNo", required=false) List<String> invoiceNo as the controller method parameter.

Answer 3

In spring you can get query parameters by using the annotation @RequestParam inside controller's endpoint method like this:

@GetMapping("/invoice")
public CustomResponse getInvoiceData(
        @RequestParam(value="invoiceNo") List<Long> invoiceNoList,
        @RequestParam(value="invoiceDate", required = false) List<Date> invoiceDateList){
    ...
}

You can see another values that this annotation can get (like required, default, etc..) in the docs