How to Pass Complex Objects as GET Request Parameters in Spring MVC?

Passing Complex Objects as GET Request Parameters in Spring MVC

In a scenario where you're filtering data from a table using Ajax GET requests, you may encounter the need to pass a complex object as a request parameter. Traditionally, this would require a plethora of @RequestParam annotations in your controller.

Problem:

You have a GET request to filter a table with query parameters like:

http://foo.com/system/controller/action?page=1&prop1=x&prop2=y&prop3=z

Your Controller's parameters would be:

@RequestMapping(value = "/action")
public @ResponseBody List<MyObject> myAction(
    @RequestParam(value = "page", required = false) int page,
    @RequestParam(value = "prop1", required = false) String prop1,
    @RequestParam(value = "prop2", required = false) String prop2,
    @RequestParam(value = "prop3", required = false) String prop3) { ... }

Solution:

To simplify this process, you can pass the complex object directly as a request parameter without the @RequestParam annotation. Spring will automatically bind the request parameters to the instance of your class:

public @ResponseBody List<MyObject> myAction(
    @RequestParam(value = "page", required = false) int page,
    MyObject myObject)

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