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Jquery – Springboot parameter becomes null

I was trying a code which was a bit more complex and was testing things when everything I put into spring boot came out as null in the other end

Therefore I made the program simpler until I thought I knew it should work, but it still didn’t.
I am using springboot severeal places in my program, and it works there. Why doesn’t it work here?

@PostMapping("/Test")
public void Test(String number)
{
  System.out.println("Number " + number);
}

$.post("/Test", "1")

This is what my console prints:

Number null
Tags:

2

Answers


  1. 0

    Assuming this will be your java code.

    import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class TestController {

    @PostMapping("/Test")
    public void test(@RequestBody String number) {
        System.out.println("Number " + number);
    }
}

    you need to pass it like below code.

    // Make a POST request using jQuery's $.post method
$.post('/Test', { number: '123' })
    .done(function(data) {
        console.log('Success:', data); // Handle the success response
    })
    .fail(function(xhr, status, error) {
        console.error('Error:', error); // Handle any errors
    });

    you can use ajax also.

    // Make an AJAX POST request using jQuery
$.ajax({
    url: '/Test',
    type: 'POST',
    data: { number: '123' }, // Pass the 'number' parameter
    success: function(data) {
        console.log('Success:', data); // Handle the success response
    },
    error: function(xhr, status, error) {
        console.error('Error:', error); // Handle any errors
    }
});
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  2. 0

    For Post you have to use @RequestBody

    try

    @PostMapping("/Test")
public void Test( @RequestBody String number)
{
  System.out.println("Number " + number);
}
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