How to pass List<String> in post method using Spring MVC?

I need to pass a list of values in the request body of `POST` method but I get `400: Bad Request error`.

Below is my sample code:

@RequestMapping(value = "/saveFruits", method = RequestMethod.POST,
consumes = "application/json")
@ResponseBody
public ResultObject saveFruits(@RequestBody List<String> fruits) {
...
}

The JSON I am using is: `{"fruits":["apple","orange"]}`

You are using wrong JSON. In this case you should use JSON that looks like this:

["orange", "apple"]

If you have to accept JSON in that form :

{"fruits":["apple","orange"]}

You'll have to create wrapper object:

public class FruitWrapper{

List<String> fruits;

//getter
//setter
}

and then your controller method should look like this:


@RequestMapping(value = "/saveFruits", method = RequestMethod.POST,
consumes = "application/json")
@ResponseBody
public ResultObject saveFruits(@RequestBody FruitWrapper fruits){
...
}

I had the same use case,
You can change your method defination in the following way :

@RequestMapping(value = "/saveFruits", method = RequestMethod.POST,
consumes = "application/json")
@ResponseBody
public ResultObject saveFruits(@RequestBody Map<String,List<String>> fruits) {
..
}

**The only problem is it accepts any key in place of "fruits" but You can easily get rid of a wrapper if it is not big functionality.**

You can pass input as `["apple","orange"] `if you want to leave the method as it is.

It worked for me with a similar method signature.