如何在javascript或表单中将"undefined“替换为零值以传递给spring-mvc控制器？

var value = undefined;
if (typeof value === 'undefined') {
  value = 0;
}

document.getElementById('myForm').addEventListener('submit', function(event) {
  var value = document.getElementById('myInput').value;
  if (typeof value === 'undefined' || value === '') {
    document.getElementById('myInput').value = '0';
  }
});

@Controller
public class MyController {
  @RequestMapping("/myEndpoint")
  public String myEndpoint(@RequestParam(value = "myParam", required = false) Integer myParam) {
    if (myParam == null) {
      myParam = 0;
    }
    // 其他逻辑处理
    return "result";
  }
}