如何在Spring MVC中将多维数组作为@RequestParam处理？

Question

So, basically, I have a form that sends the following inputs:

<form>
  <input type="text" name="days[monday][start]" value="1">
  <input type="text" name="days[monday][end]" value="2">
  <input type="text" name="days[tuesday][start]" value="1">
  <input type="text" name="days[tuesday][end]" value="2">
</form>

How to handle this in Spring MVC as @RequestParam ?

So far I tried

@RequestParam(value= "days", required = true) Map<String, Object>[] days
......
@RequestParam(value= "days", required = true) Map<String, Map<String, Object>> days
... or even ...
request.getParameter("days");

But without success.

Answer 1

You will need to wrap that in a custom object , which will hold the Map object. Then you will have to change the submit and initialization of your form.

public class CustomWrapper{

    private Map<String, Object> customMap= new HashMap<String, Object>();

    public Map<String, Object> getCustomMap() {
        return customMap;
    }

    public void setCustomMap(Map<String, Object> customMap) {
        this.customMap = customMap;
    }

}

@RequestParam("days") CustomWrapper days

More info here

Answer 2

try something like below:

@RequestMapping(value="/test", method = RequestMethod.POST)
public void method(@RequestParam(value = "param[][]") String[][] paramValues)
{
    // rest of your code
}